A list of cyber-chef recipes and curated links
CyberChef, GCHQ द्वारा बनाया गया स्व-घोषित 'साइबर स्विस-आर्मी चाकू' है। यह आपके वेब-ब्राउज़र में डेटा ट्रांसफ़ॉर्मेशन, निष्कर्षण और हेरफेर के लिए एक शानदार उपकरण है।
इस उपकरण को बनाने का पूरा श्रेय @GCHQ को जाता है। देखें: https://gchq.github.io/CyberChef/
डेटा मैनिपुलेशन में CyberChef (या किसी भी DFIR कार्य) का अधिकतम लाभ उठाने के लिए रेगुलर एक्सप्रेशन में महारत हासिल करना महत्वपूर्ण है। नीचे कुछ regex दिए गए हैं जिनका मैं बार-बार उपयोग करता हूँ।
Base64 निकालें: [a-zA-Z0-9+/=]{30,}
हेक्साडेसिमल निकालें: [a-fA-F0-9]{10,}
कैरेक्टर कोड निकालें: [\d]{2,3}(,|’)
(?<=foo)(.*)
^.*(?=bar)
(?<=')(.*?)(?=')
CyberChef एक HTTP Request ऑपरेशन प्रदान करता है (रेसिपी 22 देखें) जो बाहरी संसाधनों के लिए HTTP अनुरोधों की अनुमति देता है। समान मूल नीति (Same Origin Policy - SOP) या क्रॉस-ओरिजिन रिसोर्स शेयरिंग कॉन्फ़िगरेशन की कमी के कारण कई काम नहीं करते। SOP आधुनिक ब्राउज़रों में एक सुरक्षा उपाय है जो आपको उन सर्वरों से क्रॉस-साइट प्रतिक्रियाएँ पढ़ने से रोकता है जो इसे CORS के माध्यम से स्पष्ट रूप से अनुमति नहीं देते हैं। @GlassSec का CyberChef पर टॉक देखें, जिसमें वेब-सुरक्षा के बिना Chrome शुरू करने के सुझाव शामिल हैं ताकि अन्यथा प्रतिबंधित APIs (जैसे Virus Total) के लिए HTTP अनुरोध सक्षम किए जा सकें।
CyberChef की कुछ उदाहरण रेसिपी:
रेसिपी 1: base64 निकालें, raw inflate और beautify करें
रेसिपी 4: Group Policy Preference पासवर्ड डिक्रिप्शन
रेसिपी 5: Loops और Labels का उपयोग
रेसिपी 6: Google ei टाइमस्टैम्प
रेसिपी 7: मल्टी-स्टेज COM स्क्रिप्टलेट से x86 असेंबली
रेसिपी 8: हेक्साडेसिमल निकालें, एम्बेडेड PE फ़ाइल के लिए hexdump में बदलें
रेसिपी 9: स्ट्रिंग्स उल्टा करें, कैरेक्टर प्रतिस्थापन, base64 से
रेसिपी 10: Squid प्रॉक्सी कैश से ऑब्जेक्ट निकालें
रेसिपी 11: GPS निर्देशांक को Google Maps URLs में बदलें
रेसिपी 12: बड़ी संख्याओं का प्रोसेसिंग
रेसिपी 13: Registers के साथ DNS PTR रिकॉर्ड पार्स करना
रेसिपी 14: POSHC2 एक्ज़ीक्यूटेबल्स को डिकोड करना
रेसिपी 15: $MFT $SI टाइमस्टैम्प पार्स करना
रेसिपी 16: PHP gzinflate और base64 वेबशेल्स को डिकोड करना
रेसिपी 17: Powershell Meterpreter Reverse TCP स्क्रिप्ट से शेलकोड निकालना
रेसिपी 18: Subsections और Merges के साथ Recycle Bin पार्सर
रेसिपी 19: Regular Expression हाइलाइटिंग के साथ Obfuscated Base64 पहचानें
रेसिपी 20: Deobfuscated मैलिशियस स्क्रिप्ट्स के साथ Yara rules का उपयोग
रेसिपी 21: मैलिशियस LNK फ़ाइल से जुड़ी hex-एन्कोडेड VBE स्क्रिप्ट का इनलाइन डीऑबफस्केशन
रेसिपी 22: HTTP Request और Registers के साथ JA3 API खोज
रेसिपी 24: छह-बाइट स्ट्रिंग से एक यादृच्छिक अक्षर चुनना
रेसिपी 26: मल्टीस्टेज PHP वेबशेल को निकालना और डिकोड करना
रेसिपी 27: Auto Visitor PHP स्क्रिप्ट डिकोड करना
रेसिपी 29: Subsections और Registers के साथ लॉग फ़ाइल टाइमस्टैम्प हेरफेर
रेसिपी 30: Cobalt Strike beacon के लिए CharCode ऑबफस्केटेड PowerShell Loader
रेसिपी 31: .NET बाइनरी में एन्कोडेड स्ट्रिंग्स डीऑबफस्केट करें
रेसिपी 32: ऑबफस्केटेड रजिस्ट्री डेटा से मैलिशियस Gootkit DLL निकालें
रेसिपी 33: Emotet PowerShell स्क्रिप्ट में एम्बेडेड URLs पहचानें
रेसिपी 34: URLs के लिए OOXML फ़ाइलों का विश्लेषण
रेसिपी 35: REvil PowerShell ransomware नमूना डिक्रिप्ट करना
रेसिपी 36: CyberChef पासवर्ड जनरेटर बनाएं
रेसिपी 37: सैंडबॉक्स की गई ज़िप ईमेल से मैलिशियस URL तक
रेसिपी 38: Planes, Skulls and Envelopes - Live and Let PowerShell
रेसिपी 39: GoldMax उर्फ Sunshutte एन्क्रिप्टेड कॉन्फ़िगरेशन फ़ाइलें डिक्रिप्ट करें
रेसिपी 41: PHP मिश्रित हेक्साडेसिमल और ऑक्टल एन्कोडिंग
रेसिपी 42: लेयर्ड ऑबफस्केशन के साथ PHP वेबशेल
रेसिपी 43: Magento skimmer डीऑबफस्केशन
रेसिपी 44: JobCrypter Ransomware डिक्रिप्ट करना
रेसिपी 45: Sqiud Proxy Log टाइमस्टैम्प रूपांतरण
रेसिपी 46: स्थिति के अनुसार अपने regex को अनुकूलित करना
रेसिपी 47: Trickbot Visual Basic स्क्रिप्ट
रेसिपी 48: vjw0rm Emoji पागलपन
रेसिपी 49: EICAR टेस्ट फ़ाइल को डिसअसेंबल करें
रेसिपी 50: Security Descriptor Definition Language आउटपुट पार्स करें
रेसिपी 52: आइटमों की सूची को रैंडमाइज़ करें
रेसिपी 53: Olevba आउटपुट को Powershell में
रेसिपी 54: Windows Event ID 1029 हैश
रेसिपी 55: BazarLoader उर्फ TA551 मालडॉक का डीऑबफस्केशन
रेसिपी 56: PCAP से JA3 या JA3S हैश मानों की गणना और खोज करें
रेसिपी 57: CyberChef के साथ मीम बनाएं
रेसिपी 58: मालडॉक से IcedID दूसरे चरण का URL निकालें
रेसिपी 59: Cobalt Strike beacon कॉन्फ़िगरेशन पार्स करें
रेसिपी 60: Microsoft Safelinks द्वारा सुरक्षित URLs डिकोड करें
रेसिपी 61: Qakbot Excel मालडॉक्स से दूसरे चरण के URLs निकालें
रेसिपी 62: Emotet मालडॉक से PowerShell
रेसिपी 63: Dridex ऑबफस्केटेड VBS से URLs निकालें
रेसिपी 64: Strings को VirusTotal Grep क्वेरी में बदलें
रेसिपी 65: MSF Venom PowerShell रिवर्स शेल पेलोड डीऑबफस्केट करें
रेसिपी 66: नेस्टेड सबसेक्शन उदाहरण
रेसिपी 67: MSI ProductCode को Registry Installer ProductID में बदलना
रेसिपी 68: Java साइन्ड बाइट ऐरे बदलना
रेसिपी 69: Bumblebee Powershell स्क्रिप्ट से DLL पेलोड निकालना
रेसिपी 70: Android नेटवर्क सुरक्षा कॉन्फ़िग से endpoints निकालना
यह एक बहुत ही सामान्य परिदृश्य है: Base64 निकालें, inflate करें, कोड को ब्यूटीफाई करें। अगले चरण के आधार पर आपको आगे की प्रोसेसिंग या डायनामिक विश्लेषण करने की आवश्यकता हो सकती है।
फ़ाइल नाम: ahack.bat
ज़िप की गई फ़ाइल: cc9c6c38840af8573b8175f34e5c54078c1f3fb7c686a6dc49264a0812d56b54_183SnuOIVa.bin.gz
नमूना: SHA256 cc9c6c38840af8573b8175f34e5c54078c1f3fb7c686a6dc49264a0812d56b54
[{"op":"Regular expression","args":["User defined","[a-zA-Z0-9+/=]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Raw Inflate","args":[0,0,"Adaptive",false,false]},{"op":"Generic Code Beautify","args":[]}]
CyberChef won't be able to handle all types of Invoke-Obfuscation, but here is one that can be decoded.
Filename: Acknowledgement NUT-95-52619.eml
Zipped File: 1240695523bbfe3ed450b64b80ed018bd890bfa81259118ca2ac534c2895c835.bin.gz
Sample: SHA256 1240695523bbfe3ed450b64b80ed018bd890bfa81259118ca2ac534c2895c835
[{"op":"Find / Replace","args":[{"option":"Regex","string":"\\^|\\\\|-|_|\\/|\\s"},"",true,false,true,false]},{"op":"Reverse","args":["Character"]},{"op":"Generic Code Beautify","args":[]},{"op":"Find / Replace","args":[{"option":"Simple string","string":"http:"},"http://",true,false,true,false]},{"op":"Extract URLs","args":[false]},{"op":"Defang URL","args":[true,true,true,"Valid domains and full URLs"]}]
मैलवेयर और स्क्रिप्ट्स अक्सर वर्णों को दर्शाने के लिए CharCode का उपयोग करते हैं ताकि AV और EDR समाधानों से बच सकें। CyberChef इसे आसानी से निपटा लेता है।
Filename: 3431818-f71f60d10b1cbe034dc1be242c6efa5b9812f3c6.zip
Source: https://gist.github.com/jonmarkgo/3431818
[{"op":"Regular expression","args":["User defined","([0-9]{2,3}(,\\s|))+",true,true,false,false,false,false,"List matches"]},{"op":"From Charcode","args":["Comma",10]},{"op":"Regular expression","args":["User defined","([0-9]{2,3}(,\\s|))+",true,true,false,false,false,false,"List matches"]},{"op":"From Charcode","args":["Space",10]}]
When a new GPP is created, there’s an associated XML file created in SYSVOL with the relevant configuration data and if there is a password provided, it is AES-256 bit encrypted. Microsoft published the AES Key, which can be used to decrypt passwords store in: \\SYSVOL<DOMAIN>\Policies\
Credit: @cyb3rops
Source 1: https://twitter.com/cyb3rops/status/1036642978167758848
Source 2: https://adsecurity.org/?p=2288
[{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"To Hex","args":["None"]},{"op":"AES Decrypt","args":[{"option":"Hex","string":"4e9906e8fcb66cc9faf49310620ffee8f496e806cc057990209b09a433b66c1b"},{"option":"Hex","string":""},"CBC","Hex","Raw",{"option":"Hex","string":""}]},{"op":"Decode text","args":["UTF16LE (1200)"]}]
CyberChef लेबल का उपयोग करके रेसिपी के हिस्सों की पहचान कर सकता है और फिर कई बार ऑपरेशन करने के लिए वापस लूप कर सकता है। इस उदाहरण में, Base64 एन्कोडिंग के 29 राउंड हैं, जिन्हें निकाला और डिकोड किया जाता है।
श्रेय: @pmelson
स्रोत फ़ाइल: hmCPDnHs.txt
स्रोत 1: https://pastebin.com/hmCPDnHs
स्रोत 2: https://twitter.com/pmelson/status/1078776229996752896
Base64 पर लूप के और उदाहरण भी देखें: https://twitter.com/QW5kcmV3/status/1079095274776289280 (श्रेय: @QW5kcmV3)
[{"op":"Label","args":["top"]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9+/=]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Raw Inflate","args":[0,0,"Adaptive",false,false]},{"op":"Jump","args":["top",28]},{"op":"Generic Code Beautify","args":[]}]
Google uses its own timestamp, I call ei time, which it embeds in the URL.
Source: https://bitofhex.com/2018/05/29/cyberchef/
[{"op":"From Base64","args":["A-Za-z0-9-_=",true]},{"op":"To Hex","args":["None"]},{"op":"Take bytes","args":[0,8,false]},{"op":"Swap endianness","args":["Hex",4,true]},{"op":"From Base","args":[16]},{"op":"From UNIX Timestamp","args":["Seconds (s)"]}]
यह एक ग्यारह-चरणीय डीकोडेड COM स्क्रिप्टलेट है जो Base64, Gunzip, RegEx, और Disassemble x86 निर्देशों का उपयोग करता है।
श्रेय: @JohnLaTwC
फ़ाइलनाम: 41a6e22ec6e60af43269f4eb1eb758c91cf746e0772cecd4a69bb5f6faac3578.txt
स्रोत 2: https://twitter.com/JohnLaTwC/status/1062419803304976385
[{"op":"Regular expression","args":["","[A-Za-z0-9=/]{40,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Remove null bytes","args":[]},{"op":"Regular expression","args":["User defined","[A-Za-z0-9+/=]{40,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Gunzip","args":[]},{"op":"Regular expression","args":["User defined","[A-Za-z0-9+/=]{40,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"To Hex","args":["Space"]},{"op":"Remove whitespace","args":[true,true,true,true,true,false]},{"op":"Disassemble x86","args":["32","Full x86 architecture",16,0,true,true]}]
This file has an embedded PE file (SHA 256: 26fac1d4ea12cdceac0d64ab9694d0582104b3c84d7940a4796c1df797d0fdc2, R5Sez8PH.exe, VT: 54/70). Using CyberChef, we can regex hexadecimal and the convert to a more easily viewable hexdump.
Source 1: https://pastebin.com/R5Sez8PH (sorry: no longer available!)
Source 2: https://twitter.com/ScumBots/status/1081949877272276992
[{"op":"Regular expression","args":["User defined","[a-fA-F0-9]{200,}",true,true,false,false,false,false,"List matches"]},{"op":"From Hex","args":["Auto"]},{"op":"To Hexdump","args":[16,false,false]}]
base64 का एक ब्लॉब जिसमें कुछ छोटे बाइट्स प्रतिस्थापित किए जाने हैं। मूल डिकोडिंग @pmelson द्वारा Python में की गई थी और CyberChef में रूपांतरित की गई।
क्रेडिट: @pmelson
स्रोत 1: https://pastebin.com/RtjrweYF / RtjrweYF.txt
स्रोत 2: https://twitter.com/pmelson/status/1076893022758100998
[{"op":"Reverse","args":["Character"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"%"},"A",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"×"},"T",true,false,false,false]},{"op":"Find / Replace","args":[{"option":"Simple string","string":"÷"},"V",true,false,false,false]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"To Hexdump","args":[16,false,false]}]
Don't manually carve out your Squid cache objects. Simply upload the file to CyberChef. This recipe will search for the magic bytes 0x0D0A0D0A, extract everything after. It then gzip decompresses the object for download.
Source: 00000915 (output should be TrueCrypt_Setup_7.1a.exe with SHA256 e95eca399dfe95500c4de569efc4cc77b75e2b66a864d467df37733ec06a0ff2)
[{"op":"To Hex","args":["None"]},{"op":"Regular expression","args":["User defined","(?<=0D0A0D0A).*$",true,false,false,false,false,false,"List matches"]},{"op":"From Hex","args":["Auto"]},{"op":"Gunzip","args":[]}]
यदि आपको शीघ्रता से यह पता लगाना है कि फोटो कहाँ ली गई थी और आप पर्याप्त भाग्यशाली हैं कि आपके पास एम्बेडेड GPS अक्षांश और देशांतर हैं, तो स्थान की पहचान करने के लिए शीघ्रता से एक उपयोगी Google Maps URL बनाने के लिए इस रेसिपी का उपयोग करें।
[{"op":"Extract EXIF","args":[]},{"op":"Regular expression","args":["User defined","((?<=GPSLatitude:).*$)|((?<=GPSLongitude: ).*$)",true,true,false,false,false,false,"List matches"]},{"op":"Find / Replace","args":[{"option":"Extended (\\n, \\t, \\x...)","string":"\\n"},",",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Simple string","string":" "},"https://maps.google.com/?q=",true,false,true,false]}]
CyberChef can handle massive numbers. Here we can use a simple recipe to change a 38-digit X509SerialNumber to its hexadecimal equivalent X.509 certificate serial number. Then we can regex the hexadecimal and insert a colon to transform it to the correct format.
Credit: @QW5kcmV3
Source: https://twitter.com/QW5kcmV3/status/949437437473968128
[{"op":"To Base","args":[16]},{"op":"Regular expression","args":["User defined","[a-f0-9]{2,2}",true,true,false,false,false,false,"List matches"]},{"op":"Find / Replace","args":[{"option":"Extended (\\n, \\t, \\x...)","string":"\\n"},":",true,false,true,false]}]
DNS PTR रिकॉर्ड्स में IP पते सबसे कम महत्वपूर्ण ऑक्टेट (least significant octet) पहले संग्रहीत किए जाते हैं। उदाहरण के लिए: 167.139.44.10.in-addr.arpa, 10.44.139.167 IP पते से संबंधित होगा। CyberChef के रजिस्टरों का उपयोग करके हम प्रत्येक ऑक्टेट को एक मेमोरी रजिस्टर (या वेरिएबल, यदि इसे उस तरह से सोचना आसान लगे) में आवंटित कर सकते हैं। फिर IP पते को पुनः क्रमबद्ध करने के लिए इन्हें उलटा किया जा सकता है। एक खोज/प्रतिस्थापन (find/replace) रिकॉर्ड के बाकी हिस्से को साफ कर देता है। यदि आप DNS PTR रिकॉर्ड्स में खोजने के लिए 'सामान्य' IP पतों को परिवर्तित करना चाहते हैं, तो इसे उलटा भी किया जा सकता है।
[{"op":"Fork","args":["\\n","\\n",false]},{"op":"Register","args":["(\\d{1,3}).(\\d{1,3}).(\\d{1,3}).(\\d{1,3})",true,false,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"$R0.$R1.$R2.$R3"},"$R3.$R2.$R1.$R0",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":".in-addr.arpa"},"",true,false,true,false]}]PoshC2 is a proxy aware C2 framework that utilises Powershell to aid penetration testers with red teaming, post-exploitation and lateral movement. The dropper is based on PowerShell and consists of a PowerShell script which is double Base64 encoded and compressed. Extracting the strings can be done with CyberChef as detailed below. Depending on the settings and customisation of the executable you may need to adjust your recipe.
Credit: @a_tweeter_user
Source: https://twitter.com/a_tweeter_user/status/1100751236687642624
Source: posh.zip
[{"op":"Strings","args":["All",4,"Alphanumeric + punctuation (A)",false]},{"op":"Remove null bytes","args":[]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9+=]{200,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Remove null bytes","args":[]},{"op":"Regular expression","args":["User defined","[a-z0-9/\\\\+=]{100,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Raw Inflate","args":[0,0,"Adaptive",false,false]}]
CyberChef डेटा के साथ लगभग कुछ भी कर सकता है। यहाँ एक $MFT एंट्री से रॉ हेक्स बाइट्स दिए गए हैं। विशिष्ट बाइट्स का चयन करके, और CyberChef के विभिन्न फ़ंक्शनों का उपयोग करके, मैं डेटा के किसी भी हिस्से को आवश्यकतानुसार पार्स कर सकता हूँ। यह रेसिपी $SI टाइमस्टैम्प को निकालेगी और पार्स करेगी। अब Encase की आवश्यकता नहीं!
[{"op":"Take bytes","args":[160,64,false]},{"op":"Regular expression","args":["User defined",".{16}",true,true,true,false,false,false,"List matches with capture groups"]},{"op":"Fork","args":["\\n","\\n",false]},{"op":"Swap endianness","args":["Hex",10,true]},{"op":"Remove whitespace","args":[true,true,true,true,true,false]},{"op":"Windows Filetime to UNIX Timestamp","args":["Nanoseconds (ns)","Hex"]},{"op":"From UNIX Timestamp","args":["Nanoseconds (ns)"]},{"op":"Merge","args":[]},{"op":"Register","args":["(.*)\\n(.*)\\n(.*)\\n(.*)",true,false,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"$R0"},"$SI Creation Time: $R0",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"$R1"},"$SI Modified Time: $R1",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"$R2"},"$SI MFT Change Time: $R2",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"$R3"},"$SI Access Time: $R3",false,false,true,false]}]Webshells come in all shapes and sizes. For PHP webshells the combination of gzinflate and base64 can be used to obfuscate the eval data. In this example, there are 21 rounds of compression and base64 that we can quickly parse out using labels and loops.
[{"op":"Label","args":["start"]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9=/+]{10,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Raw Inflate","args":[0,0,"Block",false,false]},{"op":"Jump","args":["start",21]}]
अक्सर @pmelson के Pastbin बॉट @scumbots में देखा जाता है, यह एक एन्कोडेड Powershell स्क्रिप्ट की कई परतों को हटाकर शेलकोड प्रदर्शित करता है। यहाँ से आप PUSH स्टेटमेंट निकालकर IP पता और पोर्ट की पहचान करने का प्रयास कर सकते हैं, लेकिन आपको बहुत सारे गलत सकारात्मक परिणाम मिलेंगे। इसलिए आपके लिए scdbg जैसे टूल का उपयोग करना बेहतर रहेगा (देखें: http://sandsprite.com/blogs/index.php?uid=7&pid=152)
स्रोत: https://twitter.com/ScumBots/status/1121854255898472453
स्रोत: https://pastebin.com/9DnD6t6W / 9DnD6t6W.txt
[{"op":"Regular expression","args":["User defined","[a-zA-Z0-9=/+]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Remove null bytes","args":[]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9=/+]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Gunzip","args":[]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9=/+]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"To Hex","args":["None"]},{"op":"Disassemble x86","args":["32","Full x86 architecture",16,0,true,true]}]Subsections and Merges are powerful tools in CyberChef that allow the application of ingredients to a selection of data rather than the whole input file. This section can then be merged together to continue on the whole input. In an awesome piece of work @GlassSec has created a Windows Recycle Bin parser using CyberChef indicating the possibilities of these functions is endless.
Source: https://gist.github.com/glassdfir/f30957b314ec39a8aa319420a29ffc76
Credit: https://twitter.com/GlassSec
[{"op":"Conditional Jump","args":["^(\\x01|\\x02)",true,"Error",10]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^(\\x02.{23})(....)"},"$1",false,false,false,false]},{"op":"Subsection","args":["^.{24}(.*)",true,true,false]},{"op":"Decode text","args":["UTF16LE (1200)"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^(.*)."},"\\nDeleted File Path: $1",false,false,false,false]},{"op":"Merge","args":[]},{"op":"Subsection","args":["^.{16}(.{8})",false,true,false]},{"op":"Swap endianness","args":["Raw",8,true]},{"op":"To Hex","args":["None"]},{"op":"Windows Filetime to UNIX Timestamp","args":["Seconds (s)","Hex"]},{"op":"From UNIX Timestamp","args":["Seconds (s)"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^(.* UTC)"},"\\nFile Deletion Time: $1",true,false,true,false]},{"op":"Merge","args":[]},{"op":"Subsection","args":["^.{8}(.{8})",true,true,false]},{"op":"To Hex","args":["None"]},{"op":"Swap endianness","args":["Hex",8,true]},{"op":"From Base","args":[16]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^(.*)"},"\\nDeleted File Size: $1 bytes",true,false,true,true]},{"op":"Merge","args":[]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^.{8}"},"******** WINDOWS RECYCLE BIN METADATA ********",true,false,false,false]},{"op":"Jump","args":["Do Nothing",10]},{"op":"Label","args":["Error"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^.*$"},"This doesn't look like a Recycle Bin file to me ",true,false,true,false]},{"op":"Label","args":["Do Nothing"]}]
यह एक रेसिपी से कम और एक तकनीक से अधिक है। रेगुलर एक्सप्रेशन घटक के 'highlight' फ़ंक्शन का उपयोग करके यह स्पष्ट रूप से दिखाया जा सकता है कि base64 डेटा को गैर-पारंपरिक base64 कैरेक्टर सेट के साथ कहाँ तोड़ा गया है। यहाँ '@<!' अनुक्रम का उपयोग स्वचालित एन्कोडिंग रूपांतरण को अस्पष्ट और बाधित करने के लिए किया जाता है। स्क्रिप्ट में आगे देखने पर, अनुक्रम को 'A' से प्रतिस्थापित किया जाता है, जिसे निष्कर्षण से पहले Find/Replace के साथ सम्मिलित किया जा सकता है। यह कई राउंड तक जारी रहता है जब तक कि रुचि का एक डोमेन प्रकट नहीं हो जाता (साथ ही एक पूर्व निष्पादन योग्य)।
स्रोत: https://pastebin.com/TmJsB0Nv & https://twitter.com/pmelson/status/1167065236907659264
[{"op":"Find / Replace","args":[{"option":"Simple string","string":"@<!"},"A",true,false,true,false]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9+/=]{20,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9+/=]{50,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Find / Replace","args":[{"option":"Simple string","string":"@<!"},"A",true,false,true,false]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9+/=]{50,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]}]Although not the most convenient way, CyberChef does provide the ability to run a yara rule over the output of a recipe. You could combine this by using the multiple inputs function to scan a larger number of files.
Source: https://twitter.com/ScumBots/status/1168528510681538560 & https://pastebin.com/r40SXe7V
[{"op":"Regular expression","args":["User defined","\\(.*\\);",true,false,false,false,false,false,"List matches"]},{"op":"Find / Replace","args":[{"option":"Regex","string":",|\\(|\\);"}," ",true,false,true,false]},{"op":"From Charcode","args":["Space",10]},{"op":"YARA Rules","args":["rule SuspiciousPowerShell {\n meta:\n description = \"Testing Yara on Cyberchef for Powershell\"\n strings:\n $a1 = \"[System.Reflection.Assembly]\" ascii\n $a2 = \"IEX\" ascii nocase\n $a3 = \"powershell.exe -w hidden -ep bypass -enc\" ascii\n condition:\n 2 of them\n}",true,true,true,true]}]
यह रेसिपी Microsoft शॉर्टकट फ़ाइल (LNK) से VBE पेलोड निकालती है और फिर सबसेक्शन का उपयोग करके हेक्स स्ट्रिंग्स को इन-लाइन डीकोड करती है।
स्रोत: malicious.lnk.bin
[{"op":"Microsoft Script Decoder","args":[]},{"op":"Subsection","args":["(?<=\\(\\\")(.*?)(?=\\\"\\))",true,true,false]},{"op":"Fork","args":["\\n","\\n",false]},{"op":"From Hex","args":["Auto"]}]Using the HTTP Request function and Registers we can enrich out data with that from an API or external resource. Here we are searching against three JA3 hashes for any known bad.
Source: Input hashes: 1aa7bf8b97e540ca5edd75f7b8384bfa, 1be3ecebe5aa9d3654e6e703d81f6928, and b386946a5a44d1ddcc843bc75336dfce
[{"op":"Comment","args":["https://ja3er.com/search/hash"]},{"op":"Fork","args":["\\n","\\n",false]},{"op":"Register","args":["(.*)",true,false,false]},{"op":"HTTP request","args":["GET","https://ja3er.com/search/$R0","","Cross-Origin Resource Sharing",false]},{"op":"JSON Beautify","args":[" ",false]}]
यह दुर्भावनापूर्ण DOC फ़ाइल सीधे Hybrid-Analysis से डाउनलोड की गई है। हम इसे gunzip करके निकालते हैं, रेगुलर एक्सप्रेशन से dosfuscation को चुनते हैं, फिर उस महत्वपूर्ण अनुभाग का चयन करते हैं जिसका उपयोग 'set' फ़ंक्शन के साथ किया जा रहा है। इस अनुभाग को तीन के अंतराल वाले रिवर्स for लूप से डीऑबफस्केट किया जाता है। इसलिए चयन करने के बाद हम स्ट्रिंग को रिवर्स करते हैं और हर तीसरे अक्षर का चयन करने के लिए रेगुलर एक्सप्रेशन कैप्चर ग्रुप्स का उपयोग करते हैं। यह YouTube पर Hack eXPlorer का बेहतरीन काम है। वहाँ जाकर देखें!
स्रोत: Untitled-11232018-659370.doc.bin.gz
श्रेय: Hack eXPlorer के वीडियो से रूपांतरित विंडोज़ CMD का उपयोग करके दुर्भावनापूर्ण कोड छिपाना - Dosfuscation
[{"op":"Gunzip","args":[]},{"op":"Regular expression","args":["User defined","c:\\\\.*\"",true,true,false,false,false,false,"List matches"]},{"op":"Find / Replace","args":[{"option":"Simple string","string":"^"},"",true,false,true,false]},{"op":"Regular expression","args":["User defined","(?<=9ojB\\=)(.*?)(?=\\) )",true,true,false,false,false,false,"List matches"]},{"op":"Reverse","args":["Character"]},{"op":"Regular expression","args":["User defined","(.)..",true,true,false,false,false,false,"List capture groups"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"\\n"},"",true,false,true,false]},{"op":"Extract URLs","args":[false]},{"op":"Extract domains","args":[true]}]A request for assistance led to this recipe which uses Registers, HTTP request and some Regex to select a random character from a six-byte string.
Credit: Adapted from Steve Thompson
[{"op":"Register","args":["(.*)",true,false,false]},{"op":"HTTP request","args":["GET","https://www.random.org/integers/?num=1&min=1&max=6&col=1&base=10&format=plain&rnd=new","","Cross-Origin Resource Sharing",false]},{"op":"Register","args":["(.)",true,false,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"(.)"},"$R0",true,false,true,false]},{"op":"Regular expression","args":["User defined","(.){$R1}",true,true,false,false,false,false,"List capture groups"]},{"op":"Head","args":["Line feed",1]}]
Either for ease of letting your mates access your guest wifi, or for any Red Team that needs to add tempting convenience to a rogue access point! Using the create QR Code function to allow Android or iOS devices to logon to your Wifi.
Credit: https://twitter.com/mattnotmax/status/1242031548884369408
Background: https://github.com/zxing/zxing/wiki/Barcode-Contents#wi-fi-network-config-android-ios-11
Generate_QR_Code('PNG',5,2,'Medium')
Decoding a Webshell documented by SANS entirely within Cyberchef using regex, ROT13, HTTP Request, Registers and more!
Credit: https://twitter.com/thebluetoob
[{"op":"Regular expression","args":["User defined","(?<=')(.*?)(?=')",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"ROT13","args":[true,true,13]},{"op":"Raw Inflate","args":[0,0,"Adaptive",false,false]},{"op":"ROT13","args":[true,true,13]},{"op":"Extract URLs","args":[false]},{"op":"Register","args":["(.*)",true,false,false]},{"op":"HTTP request","args":["GET","$R0","","Cross-Origin Resource Sharing",false]},{"op":"Strings","args":["Single byte",4,"Alphanumeric + punctuation (A)",false]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9+=/]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Regular expression","args":["User defined","(?<=')(.*?)(?=')",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Raw Inflate","args":[0,0,"Adaptive",false,false]},{"op":"ROT13","args":[true,true,13]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9+=/]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]}]
Decoding an auto visitor script written in PHP within Cyberchef using regex, ROT13, multiple decompression algorithms, and subsections! The key point to consider is there are two variables using different rounds of obfuscation. You have a couple of options: work in multiple CyberChef windows to get the end result, or, as below, use subsections and greg for each variable to manipulate each independently and get both deobfuscated outputs in the one script. You can shorten the recipe further by using loops to jump the multiple rounds of Raw Inflate.
Credit: Original script provided by @NtSetDefault, original Cyberchef recipe(s) created by @thebluetoob, and refined by @mattnotmax in to one recipe.
[{"op":"Regular expression","args":["User defined","(?<=')(.*?)(?=')",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"ROT13","args":[true,true,13]},{"op":"Raw Inflate","args":[0,0,"Adaptive",false,false]},{"op":"ROT13","args":[true,true,13]},{"op":"Subsection","args":["(?<=\\$Fadly.*?\")(.*?)(?=\\\")",true,true,false]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"URL Decode","args":[]},{"op":"From HTML Entity","args":[]},{"op":"Merge","args":[]},{"op":"Subsection","args":["(?<=\\$Gans.*?\")(.*?)(?=\\\")",true,true,false]},{"op":"Reverse","args":["Character"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Label","args":["jump"]},{"op":"Raw Inflate","args":[0,0,"Adaptive",false,false]},{"op":"Jump","args":["jump",2]},{"op":"Zlib Inflate","args":[0,0,"Adaptive",false,false]},{"op":"Zlib Inflate","args":[0,0,"Adaptive",false,false]}]
Choose your poison with this ingenious script from @0xtornado which determines which type of obfuscation your beacon script has via CyberChef conditional jumps to parse out the shellcode. First the code looks for a simple regex 'bxor' to then jump to the appropriate section of the recipe. Else it parses out the second type. Using CyberChef 'tabs' you can load up two different scripts and get out your data. Impress your colleagues and friendly red team or local APT crew!
Credit: https://twitter.com/0xtornado/status/1255866333545316352
[{"op":"Conditional Jump","args":["bxor",false,"Decode_Shellcode",10]},{"op":"Label","args":["Decode_beacon"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Decode text","args":["UTF-16LE (1200)"]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9+/=]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Gunzip","args":[]},{"op":"Label","args":["Decode_Shellcode"]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9+/=]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"XOR","args":[{"option":"Decimal","string":"35"},"Standard",false]}]
Not everyone thinks of CyberChef as a tool for log file analysis. But its handy if you have to transpose, reformat or maniulate a log file to suit your purpose. Here, we have an Apache log file with a timestamp that doesn't lead to useful temporal analysis with other log files: the date format is not sortable, its enclosed in square brackets and it's in UTC +1 not a standard UTC. Using Subsections, Registers and Transpose Date and Time we can change the formatting of the timestamp and move the column around to be able to combine it with other data. Awesome!
Credit: @gazambelli and @mattnotmax
[{"op":"Fork","args":["\\n","\\n",false]},{"op":"Subsection","args":["\\[.*\\+0100\\]",true,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"\\[|\\]"},"",true,false,true,false]},{"op":"Translate DateTime Format","args":["Standard date and time","DD/MMM/YYYY:HH:mm:ss ZZ","Etc/GMT-1","YYYY-MM-DDTHH:mm:ss ZZ","UTC"]},{"op":"Merge","args":[]},{"op":"Fork","args":["\\n","\\n",false]},{"op":"Register","args":["(.*)(\\d{4}-.*\\+0000)(.*)",true,false,false]},{"op":"Find / Replace","args":[{"option":"Simple string","string":"$R0$R1$R2"},"$R1 $R0 $R2",true,false,true,false]}]
A variant on the standard PowerShell loader for Cobalt Strike. Here the first layer of obfuscation is a GZipped blob split into two CharCode arrays. The end result is up to you: disassembly, strings, extract IP, or parse UserAgent. Choose your own adventure.
Source: @scumbots & https://pastebin.com/raw/mUFM4fcQ
[{"op":"Regular expression","args":["User defined","\\d{1,3}",true,true,false,false,false,false,"List matches"]},{"op":"From Charcode","args":["Line feed",10]},{"op":"Gunzip","args":[]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9+/=]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"XOR","args":[{"option":"Decimal","string":"35"},"Standard",false]},{"op":"Strings","args":["Single byte",5,"All printable chars (A)",false]}]
The SolarWinds malicious .dll contained obfuscated strings using compression and base64. Rather than lose the context in your analysis, we can do a quick de-obfuscation in-line by selecting the strings with a Subsection and then converting. The result is a function that becomes readable with context and avoids a potentially error-prone cut and paste.
Credit: @cybercdh & @Shadow0pz
Source: https://twitter.com/cybercdh/status/1338885244246765569 & https://twitter.com/Shadow0pz/status/1338911469480661000
[{"op":"Subsection","args":["(?<=\\(\\\")(.*)(?=\\\"\\))",true,true,false]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Raw Inflate","args":[0,0,"Adaptive",false,false]}]
Gootkit stores a DLL inside the registry as encoded PowerShell. CyberChef makes mince meat of this so-called 'fileless' malware. A handy recipe provided by @StefanKelm puts the 'file' back in 'fileless' (yes, I thought of that one myself, we are up to recipe 32 my friends...).
Source: https://github.com/StefanKelm/cyberchef-recipes
[{"op":"Decode text","args":["UTF-16LE (1200)"]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9+/=]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Decode text","args":["UTF-16LE (1200)"]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9+/=]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Raw Inflate","args":[0,0,"Adaptive",false,false]}]
Using the powerful operation of Registers, a handy recipe from @Cryptolaemus1 extracts obfuscated URLs from the PowerShell from an Emotet malicious document. Here capture groups are used to grab the find/replace string which de-obfuscates the URLs. Awesome stuff.
Credit: @Cryptolaemus and @NtRaiseException()
Source: https://twitter.com/Cryptolaemus1/status/1319357369902649344
[{"op":"Regular expression","args":["User defined","[a-zA-Z0-9+/=]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Decode text","args":["UTF-16LE (1200)"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"'\\)?\\+\\(?'"},"",true,false,true,false]},{"op":"Register","args":["\\(+'(=[\\w\\d]*)'\\)+,'/'\\)",true,false,false]},{"op":"Find / Replace","args":[{"option":"Simple string","string":"$R0"},"/",true,false,true,false]},{"op":"Register","args":["\\/(.)http",true,false,false]},{"op":"Find / Replace","args":[{"option":"Simple string","string":"$R1"},"\\n",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"'"},"\\n",true,false,true,false]},{"op":"Extract URLs","args":[false]}]
Didier Stevens demonstrates the amazing simplicity and usefulness of CyberChef by extracting URLs from OOXML documents (e.g. .docx files). By unzipping the file and filtering out the 'known good' the remaining URLs can be inspected. Don't forget to defang to avoid any unnecessary clicks or operational security mistakes. Combine with CyberChef 'tabs' functionality and you could analyse a batch of files.
Credit: @DidierStevens
Source: https://isc.sans.edu/diary/27020
[{"op":"Unzip","args":["",false]},{"op":"Extract URLs","args":[false]},{"op":"Filter","args":["Line feed","http://schemas\\.openxmlformats\\.org/",true]},{"op":"Filter","args":["Line feed","http://schemas\\.microsoft\\.com/",true]},{"op":"Filter","args":["Line feed","http://purl\\.org/",true]},{"op":"Filter","args":["Line feed","http://www\\.w3\\.org/",true]},{"op":"Defang URL","args":[true,true,true,"Valid domains and full URLs"]}]
An AES encrypted PowerShell ransomware script is no match for CyberChef. Here were can convert the Base64 to hex, extract the IV and Key into registers and use them to decrypt the blob. Once decrypted we can examine the data and identify a PE file 1925 bytes into the decrypted blob. Extracting this we can then use other tools to identify its behaviour including detonation or static analysis.
Source: @mattnotmax
Further Info: Powershell Dropping a REvil Ransomware
[{"op":"Subsection","args":["(?<=\\\")([a-zA-Z0-9+/=]{20,})(?=\\\")",true,true,false]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"To Hex","args":["None",0]},{"op":"Merge","args":[]},{"op":"Register","args":["(?<=\\\")([a-fA-F0-9]{32})(?=\\\")",true,false,false]},{"op":"Register","args":["(?<=\\\")([a-fA-F0-9]{64})(?=\\\")",true,false,false]},{"op":"Regular expression","args":["User defined","[a-f0-9]{100,}",true,true,false,false,false,false,"List matches"]},{"op":"AES Decrypt","args":[{"option":"Hex","string":"$R1"},{"option":"Hex","string":"$R0"},"CBC","Hex","Raw",{"option":"Hex","string":""},""]},{"op":"Regular expression","args":["User defined","[a-f0-9]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"From Hex","args":["Auto"]},{"op":"Drop bytes","args":[0,1925,false]},{"op":"SHA2","args":["256",64,160]}]
Ok, so I'm kinda cheating here, as the bulk of the work is being done by an API. But it's a good example to remind you the HTTP Requests operation can be a super powerful way of augmenting CyberChef. Here I made a little 'input form' in the CyberChef input pane, and use regular expressions to capture the key paramters for the API call into Registers. A little text massage, and you can have a quick and easy generator as you need it. Saved as a recipe for when you need to deliver a quick new password to a new user.
Source: @mattnotmax
[{"op":"Register","args":["(?<=number:\\s)(.*)",true,false,false]},{"op":"Register","args":["(?<=words:\\s)(.*)",true,false,false]},{"op":"Register","args":["(?<=length:\\s)(.*)",true,false,false]},{"op":"HTTP request","args":["GET","https://makemeapassword.ligos.net/api/v1/passphrase/plain?pc=$R0&wc=$R1&sp=y&maxCh=$R2","","Cross-Origin Resource Sharing",false]},{"op":"Find / Replace","args":[{"option":"Regex","string":" "},"-",true,false,true,false]}]
Most sandboxes deliver a zipped file with the generic password 'infected'. Why risk extracting out to your desktop when you can extract the contents in CyberChef? Here we have an email .eml file which includes an OLE2 file attachment. Strings identifies Base64 which is then extracted and decoded to pull out the second stage.
Source: Any.run
[{"op":"Unzip","args":["infected",false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"\\n"},"",true,false,true,false]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9+/=]{400,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Strings","args":["16-bit littleendian",400,"Null-terminated strings (U)",false]},{"op":"Decode text","args":["UTF-16LE (1200)"]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9+/=]{2000,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Decode text","args":["UTF-16LE (1200)"]},{"op":"Extract URLs","args":[false]},{"op":"Defang URL","args":[true,true,true,"Valid domains and full URLs"]}]
A substitution is a substitution. It can be letter for letter, letter for number, or letter for...skull? Here the obfuscation may initially look more confusing but its actually no different to other types. Find/Replce, Subsection, From Base64...all a standard day out for CyberChef. I've reversed the first section to enable extraction of the url, then continue with the deobfuscation.
Source: any.run
Credit: https://twitter.com/neonprimetime/status/1365351048525791232
[{"op":"Find / Replace","args":[{"option":"Regex","string":"☠"},"B",true,false,true,false]},{"op":"Subsection","args":["[a-zA-Z0-9+/=]{300,}",true,true,false]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Decode text","args":["UTF-16LE (1200)"]},{"op":"Reverse","args":["Character"]},{"op":"Merge","args":[]},{"op":"Find / Replace","args":[{"option":"Simple string","string":"_✉✈_"},"A",true,false,true,false]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9+/=]{300,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]}]
GoldMax aka Sunshuttle drops an encrypted configuration file when it executes. In the RE analysis by Microsoft and Fireeye the algorithm and keys were identified and published, making it a breeze to decrypt with CyberChef.
Source 1: https://www.microsoft.com/security/blog/2021/03/04/goldmax-goldfinder-sibot-analyzing-nobelium-malware/
Source 2: https://www.fireeye.com/blog/threat-research/2021/03/sunshuttle-second-stage-backdoor-targeting-us-based-entity.html
[{"op":"From Base64","args":["A-Za-z0-9-_",true]},{"op":"AES Decrypt","args":[{"option":"UTF8","string":"hz8l2fnpvp71ujfy8rht6b0smouvp9k8"},{"option":"Hex","string":"00000000000000000000000000000000"},"CFB","Raw","Raw",{"option":"Hex","string":""}]},{"op":"Subsection","args":["[a-zA-Z0-9+/=]{50,}",true,true,false]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Merge","args":[]},{"op":"Drop bytes","args":[0,16,false]},{"op":"Take bytes","args":[0,120,false]},{"op":"Register","args":["(^.*?)\\|(.*?)\\|(.*?)\\|(.*)\\|(.*)",true,false,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":".*"},"MD5 of Execution Time:\\t\\t\\t$R0\\nLower/Upper Limit for Sleep Time:\\t$R1\\nUtilize “blend-in” traffic requests:\\t$R2\\nEnd execution timestamp:\\t\\t$R2\\nUser-agent for HTTPS requests:\\t\\t$R4",false,false,false,false]}]
Yes, there is a morse code operation in CyberChef. Yes, you may need to use it one day. Sadly this wasn't malware but still CyberChef does the job. Thanks to @pmelson and @cyber__sloth for this entry.
Source: https://pastebin.com/raw/PvLuparz
Recipe: https://twitter.com/cyber__sloth/status/1367904890157211654
[{"op":"From Binary","args":["Space",8]},{"op":"From Morse Code","args":["Space","Forward slash"]},{"op":"Reverse","args":["Character"]},{"op":"ROT13","args":[true,true,false,13]}]
What do we want? Mixed encoding with both hexadecimal and octal in the one set! When do we want it? Now!
Source: https://twitter.com/JCyberSec_/status/1368963598475739137
[{"op":"Fork","args":["\\n","\\n",false]},{"op":"Subsection","args":["\\\\x[a-fA-F0-9]{2}",true,true,false]},{"op":"From Hex","args":["\\x"]},{"op":"Merge","args":[]},{"op":"Subsection","args":["\\\\\\d{3}",true,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"\\\\"},"",true,false,true,false]},{"op":"From Octal","args":["Space"]}]
This multi-layered webshell is a good case for subsections and jumps. You can break it into parts or complete it (as below) in a single CyberChef recipe.
Source: https://twitter.com/mattnotmax/status/1377829935780274176
[{"op":"Regular expression","args":["User defined","[a-zA-Z0-9+/=]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Subsection","args":["(?<=\\\\x)([a-fA-F0-9]{2})",true,true,false]},{"op":"From Hex","args":["\\x"]},{"op":"Merge","args":[]},{"op":"Find / Replace","args":[{"option":"Regex","string":"\\\\x"},"",true,false,true,false]},{"op":"Subsection","args":["[a-zA-Z0-9+/=]{30,}=",true,true,false]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Raw Inflate","args":[0,0,"Adaptive",false,false]},{"op":"From HTML Entity","args":[]},{"op":"Merge","args":[]},{"op":"Subsection","args":["[a-zA-Z0-9+/=]{30,}",true,true,false]},{"op":"Reverse","args":["Character"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Label","args":["decompress"]},{"op":"Zlib Inflate","args":[0,0,"Adaptive",false,false]},{"op":"Raw Inflate","args":[0,0,"Adaptive",false,false]},{"op":"Jump","args":["decompress",3]},{"op":"ROT13","args":[true,true,false,13]}]
Let's face it, no-one likes to deobfuscate JavaScript. Looking at this mess of an obfuscation we probably don't need to do much to get the key info as the encoding is simple. With regex in a couple of Subsections we can deobfuscate 'in-line' quickly and get to the key data (i.e exfil domains) immediately. Then, we pass the full script for complete analysis to the new team member to finish while you get lunch...
Source: https://twitter.com/unmaskparasites/status/1370151988285992960
[{"op":"Subsection","args":["(?<=\\\")([\\w\\\\]+)(?=\\\")",true,true,false]},{"op":"From Hex","args":["\\x"]},{"op":"Merge","args":[]},{"op":"Subsection","args":["(?<=\\\")([a-f0-9\\$]+)(?=\\\")",true,true,false]},{"op":"Find / Replace","args":[{"option":"Simple string","string":"$"},",",true,false,true,false]},{"op":"From Hex","args":["Comma"]}]
JobCrypter is a .NET ransomware that uses SMTP as a C2 channel. This allows an asute professional the ability to decrypt files if they have captured email traffic as the communication is not encrypted. Full analysis of this ransomware is available at Yoroi, and @malwarelab_eu provides two related recipes to decrypt files. The first uses the captured email C2 traffic to derive the encryption key, and the second applies that key to encrypted data. I particularly like the use of 'comments' in the recipes which allow a clear understanding of the recipe! Kudos!
Source: https://twitter.com/malwarelab_eu/status/1383732397510828033
[{"op":"Comment","args":["JobCrypter Ransomware Decryptor\n\nExtracts encryption key (96 digits) from captured email traffic\n\nDerive 3DES key as K1+K2+K1 (Keyring Option 2, see https://en.wikipedia.org/wiki/Triple_DES#Keying_options)"]},{"op":"Regular expression","args":["User defined","[0-9]{96}",true,true,false,false,false,false,"List matches"]},{"op":"MD5","args":[]},{"op":"Register","args":["([a-f0-9]{16})([a-f0-9]{16})",true,false,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"$R0$R1"},"$R0$R1$R0",true,false,true,false]}]
[{"op":"Comment","args":["JobCrypter Ransomware Decryptor\n\nExtracts Base64-encoded 3DES-encrypted data from encrypted .txt files and decrypts the original data"]},{"op":"Regular expression","args":["User defined","[A-Za-z0-9+/=]{32,}",false,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Triple DES Decrypt","args":[{"option":"Hex","string":"ebd3ff58ec8ebf688e6c918a95622b9febd3ff58ec8ebf68"},{"option":"Hex","string":""},"ECB","Raw","Raw"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Render Image","args":["Raw"],"disabled":true}]
The brother of Recipe 29, and cousin of Recipe 10, here we convert squid Unix millisecond timestamp format to ISO 8601 (or whatever our choosing). A fork and subsection to isolate the timestamp and translate date and time format for the conversion. Adding .SSS keeps the fractional millisecond precision. Don't forget to 'merge' it all back if you want to continue cooking up a storm later in this recipe.
Source: https://twitter.com/mattnotmax/status/1389547145183830016
Sample Data: https://www.linuxquestions.org/questions/linux-server-73/sample-squid-proxy-log-files-837345/
[{"op":"Fork","args":["\\n","\\n",false]},{"op":"Subsection","args":["^(.*?)(?=\\s)",true,true,false]},{"op":"Translate DateTime Format","args":["UNIX timestamp (seconds)","X.SSS","UTC","YYYY-MM-DDTHH:mm:ss.SSS","UTC"]}]
Here's a pretty standard script deobfuscation. You'll get some VBS script with comma separated URLs that are cycled through to download a second stage. If you want to extract the URLs, normally you'd use the 'Extract URLs' operation which give us 99% of what we want. Except the operation also picks up the trailing '.Split('');$name which looks ugly and not as easily cut and pasted or defanged.
Now the 'Extract URLs' function simply works via a regular expression, which takes into accout all the legitimate reserved characters of a URL as per the RFC. The trailing ' (where we want it to end) is included, so we get more than we wanted. But using the built in regular expression for URLs (screenshot two) and adding the ' into the negation in the syntax we can tailor the regex to our needs and get the perfect outcome!
Source: https://app.any.run/tasks/b6d9a548-722c-4066-9448-11a966be2a73/
[{"op":"Regular expression","args":["User defined","[a-zA-Z0-9+/=]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Decode text","args":["UTF-16LE (1200)"]},{"op":"Regular expression","args":["User defined","\\d{2,3}",true,true,false,false,false,false,"List matches"]},{"op":"From Charcode","args":["Line feed",10]},{"op":"Extract URLs","args":[false],"disabled":true},{"op":"Regular expression","args":["URL","([A-Za-z]+://)([-\\w]+(?:\\.\\w[-\\w]*)+)(:\\d+)?(/[^.!,?\"<>\\[\\]{}\\s\\x7F-\\xFF]*(?:[.!,?]+[^.!,?'\"<>\\[\\]{}\\s\\x7F-\\xFF]+)*)?",true,true,false,false,false,false,"List matches"]},{"op":"Split","args":[",","\\n"]}]
The malware author here has attempted to fool automated analysis by slicing the recognisable Base64 encoded PE header into character codes. Using a filter to remove junk, subsection and standard regular expressions we can extract the base64 and the DLL the script is hiding.
Source: https://twitter.com/mattnotmax/status/1394986367604695042
[{"op":"Filter","args":["Line feed","^'",true]},{"op":"Subsection","args":["(?<=\\()(\\d{2,3})(?=\\))",true,true,false]},{"op":"From Charcode","args":["Space",10]},{"op":"Merge","args":[]},{"op":"Regular expression","args":["User defined","(?<=\\()([a-zA-Z0-9+/=]{1}?)(?=\\))|[a-zA-Z0-9+/=]{20,}",true,true,false,false,false,false,"List matches"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"\\n"},"",true,false,true,false]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"SHA2","args":["256",64,160]}]
"Emojis, so hot right now", says the meme (see recipe 38 for proof) but this interesting sample found by TomU through his ongoing research into DESKTOP-group has a few tricks up its sleeve. Apart from emoji obfuscation, it downloads a snippet of code from pastee.ee which has the final key to its de-obfuscation. But it's no match for his CyberChef recipe. I've slighted edited to use a subsection and done a find/replace directly with the emoji values as these can be pasted easily into CyberChef. For those playing at home, the extra snippet of code that helps with the deobfuscation is also available in the sample zip.
Source: https://twitter.com/c_APT_ure/status/1362146658117701632
[{"op":"Subsection","args":["\\\\x[a-fA-F0-9]{2}",true,true,false]},{"op":"From Hex","args":["Auto"]},{"op":"Merge","args":[]},{"op":"Find / Replace","args":[{"option":"Regex","string":"☽☂|☚☎"},"",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Simple string","string":"'"},"\"",true,false,true,false]}]
The EICAR test file has a standard known structure of a 16 bit DOS program. Using CyberChef we can take any valid EICAR test file and break it down to its assembly. Here we use subsections (are we getting the idea that subsections are awesome yet?) and use it to capture and manipulate sections that we require. CyberChef can produce disassembly in 16, 32 or 64 bit and voilà! We've got the correct output. With thanks to Nintechnet blog for breaking down the EICAR file and helping me to understand the structure.
Source: https://blog.nintechnet.com/anatomy-of-the-eicar-antivirus-test-file/
[{"op":"Subsection","args":["(.*)(\\$.*\\$)(.*)",true,false,false]},{"op":"To Hex","args":["None",0]},{"op":"Disassemble x86","args":["16","Full x86 architecture",16,0,true,false]},{"op":"Merge","args":[]},{"op":"Subsection","args":[".*(\\$.*\\$)",true,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^"},"db\\t\\t\\t\\t",true,false,true,false]},{"op":"Merge","args":[]},{"op":"Subsection","args":[".*\\$(.*)",true,true,false]},{"op":"To Hex","args":["None",0]},{"op":"Disassemble x86","args":["16","Full x86 architecture",16,0,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^"},"\\n",true,false,false,false]}]
If there is one thing that is definately 'All Greek to me' it's Security Descriptor Definition Language (SDDL). Thankfully, @cnotin has created a fantastic recipe to parse SDDL output to make it much easier to understand, read, and interpret. I also like the extensive use of Comments (something that I'm always advocating, but often not implementing!) Kudos!
Source: https://twitter.com/cnotin/status/1387002797175021569
[{"op":"Comment","args":["subsection for the content before the ACE strings"]},{"op":"Subsection","args":["(.*?)\\(.*",false,true,false]},{"op":"Comment","args":["Each \"G:\" and \"D:\" on its own line"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"([GD]):"},"\\n$1:",true,false,true,false]},{"op":"Comment","args":["add separator"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"$"},"\\n######\\n",true,false,false,false]},{"op":"Merge","args":[]},{"op":"Comment","args":["subsection for the ACE strings"]},{"op":"Subsection","args":["######\\n(.*)",false,true,false]},{"op":"Find / Replace","args":[{"option":"Simple string","string":")("},"\\n",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"\\)$"},"",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^\\("},"",true,false,true,false]},{"op":"Comment","args":["Add space between each permission or flag bigram"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"([A-Z]{2})"},"$1 ",true,false,true,false]},{"op":"Comment","args":["Insert table header"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^"},"Type;Flags;Permissions;ObjectType;Inherited ObjectType;Trustee\\n",false,false,true,false]},{"op":"To Table","args":[";","\\n",true,"ASCII"]},{"op":"Merge","args":[]}]
Base 45 is another type of encoding related to Base64 et al. Here Tomasz Zieliński has done amazing work in writing a CyberChef recipe for this encoding. Plus the recipe is heavily commented so you can see what is happening where! Awesome.
Credit: https://gist.github.com/tomekziel
Source: https://gist.github.com/tomekziel/eaaabd55f2d244adf5fcf7db4db0387f
[{"op":"Comment","args":["CYBERCHEF BASE-45 DECODER\n\nTomasz Zielinski ([email protected])\npublic domain\n"]},{"op":"Conditional Jump","args":["^(...)+$",false,"multiply3",10]},{"op":"Comment","args":["Flow for case with number of input characters that not divide by 3"]},{"op":"Comment","args":["\nSTEP 1\nReplace BASE-45 alphabet with numeric values\nhttps://datatracker.ietf.org/doc/html/draft-faltstrom-base45-04"]},{"op":"Substitute","args":["0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ $%*+\\-./:","\\x00\\x01\\x02\\x03\\x04\\x05\\x06\\x07\\x08\\x09\\x0a\\x0b\\x0c\\x0d\\x0e\\x0f\\x10\\x11\\x12\\x13\\x14\\x15\\x16\\x17\\x18\\x19\\x1a\\x1b\\x1c\\x1d\\x1e\\x1f\\x20\\x21\\x22\\x23\\x24\\x25\\x26\\x27\\x28\\x29\\x2a\\x2b\\x2c"]},{"op":"Comment","args":["STEP 2\nIf the length of vector is not divisible by 3, add 0 as last value"]},{"op":"To Decimal","args":["Space",false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"((\\d+ \\d+ \\d+[ ]*)+)(\\d+ \\d+[ ]*)*"},"$1/$3_",false,false,false,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"((\\d)+[ ]*)_$"},"$1 0",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"[ _]*$|/"},"",true,false,true,false]},{"op":"Comment","args":["Take three-number sequences and prepare multiplication by 1, 45, and 2025"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"(\\d+) (\\d+) (\\d+){0,1}"},"$1\\n$2 45\\n$3 2025\\n",true,false,true,false]},{"op":"Fork","args":["\\n","\\n",false]},{"op":"Multiply","args":["Space"]},{"op":"Merge","args":[]},{"op":"Find / Replace","args":[{"option":"Regex","string":"NaN"},"",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"\\n"}," ",true,false,true,false]},{"op":"Comment","args":["Sum sequences of three numbers"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"(\\d+) (\\d+) (\\d+)"},"$1 $2 $3\\n",true,false,true,false]},{"op":"Fork","args":["\\n","\\n",false]},{"op":"Sum","args":["Space"]},{"op":"Merge","args":[]},{"op":"Find / Replace","args":[{"option":"Regex","string":"NaN"},"",true,false,true,false]},{"op":"Fork","args":["\\n","\\n",false]},{"op":"To Base","args":[16]},{"op":"Find / Replace","args":[{"option":"Regex","string":"NaN"},"",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^(\\w\\w\\w)$"},"0$1",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^(\\w\\w)$"},"00$1",true,false,false,false]},{"op":"Comment","args":["Split a number to two bytes (effectively DIV256 and MOD256)"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"(\\w\\w)(\\w\\w)"},"$1\\n$2",true,false,true,false]},{"op":"Merge","args":[]},{"op":"Comment","args":["Change hex to chars"]},{"op":"Fork","args":["\\n","",false]},{"op":"Merge","args":[]},{"op":"Comment","args":["Special case, last byte is malformed as two bytes, remove unnecessary 0"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"00(\\w\\w)$"},"$1",true,false,true,false]},{"op":"From Hex","args":["Line feed"]},{"op":"Jump","args":["end",10]},{"op":"Label","args":["multiply3"]},{"op":"Comment","args":["Flow for case with number of input characters that divide by 3"]},{"op":"Substitute","args":["0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ $%*+\\-./:","\\x00\\x01\\x02\\x03\\x04\\x05\\x06\\x07\\x08\\x09\\x0a\\x0b\\x0c\\x0d\\x0e\\x0f\\x10\\x11\\x12\\x13\\x14\\x15\\x16\\x17\\x18\\x19\\x1a\\x1b\\x1c\\x1d\\x1e\\x1f\\x20\\x21\\x22\\x23\\x24\\x25\\x26\\x27\\x28\\x29\\x2a\\x2b\\x2c"]},{"op":"To Decimal","args":["Space",false]},{"op":"Comment","args":["Take three-number sequences and prepare multiplication by 1, 45, and 2025"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"(\\d+) (\\d+) (\\d+){0,1}"},"$1\\n$2 45\\n$3 2025\\n",true,false,true,false]},{"op":"Fork","args":["\\n","\\n",false]},{"op":"Multiply","args":["Space"]},{"op":"Merge","args":[]},{"op":"Find / Replace","args":[{"option":"Regex","string":"NaN"},"",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"\\n"}," ",true,false,true,false]},{"op":"Comment","args":["Sum sequences of three numbers"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"(\\d+) (\\d+) (\\d+)"},"$1 $2 $3\\n",true,false,true,false]},{"op":"Fork","args":["\\n","\\n",false]},{"op":"Sum","args":["Space"]},{"op":"Merge","args":[]},{"op":"Find / Replace","args":[{"option":"Regex","string":"NaN"},"",true,false,true,false]},{"op":"Fork","args":["\\n","\\n",false]},{"op":"To Base","args":[16]},{"op":"Find / Replace","args":[{"option":"Regex","string":"NaN"},"",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^(\\w\\w\\w)$"},"0$1",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^(\\w\\w)$"},"00$1",true,false,false,false]},{"op":"Comment","args":["Split a number to two bytes (effectively DIV256 and MOD256)"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"(\\w\\w)(\\w\\w)"},"$1\\n$2",true,false,true,false]},{"op":"Comment","args":["Change hex to chars"]},{"op":"From Hex","args":["Line feed"]},{"op":"Merge","args":[]},{"op":"Fork","args":["\\n","",false]},{"op":"Merge","args":[]},{"op":"Label","args":["end"]}]
Here we can use the operation Pseudo-Random Number Generator to create a random hexadecimal value. Prior to that we save are items in registers. Then we can join them together and sort by the randomised hex values. Sure, it's probably not cryptographically perfect and make NSA eggheads eyes bleed but ¯_(ツ)_/¯.
[{"op":"Find / Replace","args":[{"option":"Regex","string":","},"\\n",true,false,true,false]},{"op":"Sort","args":["Line feed",false,"Alphabetical (case insensitive)"]},{"op":"Fork","args":["\\n","\\n",false]},{"op":"Register","args":["([\\s\\S]*)",true,false,false]},{"op":"Pseudo-Random Number Generator","args":[32,"Hex"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"(.*)"},"$1 $R0",false,false,true,false]},{"op":"Merge","args":[]},{"op":"Sort","args":["Line feed",false,"Numeric (hexadecimal)"]},{"op":"Regular expression","args":["User defined","(?<=\\s)\\w+$",true,true,false,false,false,false,"List matches"]}]
With thanks to @James_inthe_box for this RustyBuer maldoc and recipe. Taking the output from Olevba we can regex, convert, loop and decode until we reach out PowerShell with its IOC goodies.
Credit: https://twitter.com/James_inthe_box
[{"op":"Regular expression","args":["User defined","\\d\\d+\\)(,|\\n)",true,true,false,false,false,false,"List matches"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"\\)|,"},"",true,false,true,false]},{"op":"From Charcode","args":["Line feed",10]},{"op":"Label","args":["base64loop"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Decode text","args":["UTF-16LE (1200)"]},{"op":"Jump","args":["base64loop",1]}]
Windows event logs. Love them? Hate them? Do you see event IDs in your dreams? Well rest easier with this smart recipe from Mike Peterson at nullsec.us who researched at Windows Event ID 1029 in the Microsoft-Windows-TerminalServices-RDPClient/Operational.evtx log. Lovingly placed in the log is this curious entry similar to: Base64(SHA256(UserName)) is = s8v7wS1UMkc0myytGIXeX2MWh9ojpi4aKwRwbOwFS5U=- which is a hashed & encoded entry of the username used for the RDP connection on computer initiating the connection. Read more at the blog. As it is hashed it's not easily reverseable. But if you have a 'suspect' account(s) then you can use this recipe to test your hypothesis.
Credit: https://nullsec.us/windows-event-id-1029-hashes/
[{"op":"Decode text","args":["UTF-8 (65001)"]},{"op":"Encode text","args":["UTF-16LE (1200)"]},{"op":"SHA2","args":["256",64,160]},{"op":"From Hex","args":["Space"]},{"op":"To Base64","args":["A-Za-z0-9+/="]}]
A recipe worthy of two screenshots! Here the maldoc uses a simple find/replace to further obfuscate base64 encoded & reversed data. Here within lies the URI for the next stage of malware goodness (or badness, depending on your profession, and point of view). Once you've identified the 'out of place data' (screenshot one), you can then modify your recipe to suit your needs.
Credit: Kostas
[{"op":"Find / Replace","args":[{"option":"Simple string","string":"za67t"},"",true,false,true,false]},{"op":"Generic Code Beautify","args":[]},{"op":"Subsection","args":["[A-Za-z0-9+/=]{450,}",true,true,false]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Merge","args":[]},{"op":"Subsection","args":["(?<=\\)e\\()(.*?)(?=\\n)",true,true,false]},{"op":"Reverse","args":["Character"]},{"op":"Merge","args":[]},{"op":"Extract URLs","args":[false]},{"op":"Defang URL","args":[true,true,true,"Valid domains and full URLs"]}]
Available in v9.30+ a modern update to Recipe 22. Filter a PCAP for the Client/Server Hello and extract the bytes. From here, pass it through the JA3 operation, into a register and then lookup via an API request to ja3er.com. Try out some PCAPs from the amazing www.malware-traffic-analysis.net.
Source: https://twitter.com/mattnotmax/status/1426763382082850816
[{"op":"Regular expression","args":["User defined","16030[13].+",true,true,false,false,false,false,"List matches"]},{"op":"JA3 Fingerprint","args":["Hex","Hash digest"]},{"op":"Register","args":["(.*)",true,false,false]},{"op":"HTTP request","args":["GET","https://ja3er.com/search/$R0","","Cross-Origin Resource Sharing",false]},{"op":"JSON Beautify","args":[" ",false]}]
Yes, with Add Text to Image this can be done. Yes, with Add Test to Image this should be done. Go. Do it now.
Credit: Ignis
[{"op":"HTTP request","args":["GET","https://static.flag.farm/img/2ju3gf.jpg.b64","","Cross-Origin Resource Sharing",false]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Render Image","args":["Raw"]},{"op":"Add Text To Image","args":["Making memes normally","Right","None",0,150,32,"Roboto",0,0,0,255]},{"op":"Add Text To Image","args":["Making Memes with","Right","None",0,450,32,"Roboto",0,0,0,255]},{"op":"Add Text To Image","args":["Cyberchef","None","None",550,490,32,"Roboto",0,0,0,255]}]
IcedID, also known as Bokbot, is a prolific threat, known for sending out waves of malicious documents. Here @Max_Mal_ provides a quick way to extract the second stage URL from the maldoc without executing it. By unzipping the .docx and a little regex magic we can extract the URL in plain text.
Source: Max_Malyutin
[{"op":"Unzip","args":["",false]},{"op":"Regular expression","args":["User defined","(?<=Target\\=\\\")(.*)(?=\\\"\\sTargetMode\\=)",true,true,false,false,false,false,"List matches"]}]
In the category of 'Things you probably shouldn't do in CyberChef but should try anyway' is parsing a Cobalt Strike beacon configuration file. @notwhickey has done a mammoth task of parsing the structure in CyberChef, and his blog goes into excellent detail into how this can be achieved. Definately take the time to have a read as you can learn some cool tips and tricks that could apply to other problems. You may need to adjust various XOR parameters to account for different formats as in my sample. Amazing stuff!
Source: Cobalt Strike beacon configuration parsing with CyberChef
[{"op":"To Hex","args":["None",0]},{"op":"Register","args":["([\\s\\S]*)",true,false,false]},{"op":"Regular expression","args":["User defined","(^(?:.*?)ffffff)",true,true,false,false,false,false,"List matches"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"(..)"},"$1\\n",true,false,true,false]},{"op":"Add line numbers","args":[]},{"op":"Tail","args":["Line feed",1]},{"op":"Find / Replace","args":[{"option":"Regex","string":"(\\d+)"},"$1 4",true,false,true,false]},{"op":"Divide","args":["Space"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"([0–9\\.]+)"},"$1 2",true,false,true,false]},{"op":"Sum","args":["Space"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"\\..*"},"",true,false,true,false]},{"op":"Register","args":["(\\d+)",true,false,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":".*"},"CLEAR",true,false,true,true]},{"op":"Find / Replace","args":[{"option":"Simple string","string":"CLEARCLEAR"},"$R0",true,false,true,false]},{"op":"Register","args":["(?:[0–9a-f][0–9a-f]){$R1}(.*)",true,false,true]},{"op":"Find / Replace","args":[{"option":"Regex","string":".*"},"CLEAR",true,false,true,true]},{"op":"Find / Replace","args":[{"option":"Simple string","string":"CLEARCLEAR"},"$R2",true,false,true,false]},{"op":"From Hex","args":["Auto"]},{"op":"Drop bytes","args":[0,4,false]},{"op":"XOR","args":[{"option":"Hex","string":"$R2"},"Standard",false],"disabled":true},{"op":"XOR","args":[{"option":"Hex","string":"2e"},"Standard",false]},{"op":"To Hex","args":["Space",0]},{"op":"Find / Replace","args":[{"option":"Regex","string":"(.*)"},"$1 00 08 00 03 01 00 ZZ ZZ ZZ ZZ 00 09 00 03 00 80 ZZ ZZ ZZ ZZ 00 0a 00 03 00 40 ZZ ZZ ZZ ZZ 00 0c 00 03 01 00 ZZ ZZ ZZ ZZ 00 0d 00 03 01 00 ZZ ZZ ZZ ZZ 00 0e 00 03 00 40 ZZ ZZ ZZ ZZ 00 0f 00 03 00 80 ZZ ZZ ZZ ZZ 00 1a 00 03 00 10 ZZ ZZ ZZ ZZ 00 1b 00 03 00 10 ZZ ZZ ZZ ZZ 00 1d 00 03 00 40 ZZ ZZ ZZ ZZ 00 1e 00 03 00 40 ZZ ZZ ZZ ZZ 00 20 00 03 00 80 ZZ ZZ ZZ ZZ 00 21 00 03 00 40 ZZ ZZ ZZ ZZ 00 22 00 03 00 40 ZZ ZZ ZZ ZZ 00 23 00 01 00 02 ZZ ZZ ZZ ZZ 00 24 00 01 00 02 ZZ ZZ ZZ ZZ 00 02 00 01 00 02 ZZ ZZ ZZ ZZ 00 05 00 01 00 02 ZZ ZZ ZZ ZZ 00 06 00 01 00 02 ZZ ZZ ZZ ZZ 00 10 00 01 00 02 ZZ ZZ ZZ ZZ 00 11 00 01 00 02 ZZ ZZ ZZ ZZ 00 12 00 01 00 02 ZZ ZZ ZZ ZZ 00 14 00 02 00 04 ZZ ZZ ZZ ZZ 00 03 00 02 00 04 ZZ ZZ ZZ ZZ 00 13 00 02 00 04 ZZ ZZ ZZ ZZ",true,false,true,false]},{"op":"Register","args":["(?:00 08 00 03 01 00)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 09 00 03 00 80)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 0a 00 03 00 40)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 0c 00 03 01 00)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 0d 00 03 01 00)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 0e 00 03 00 40)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 0f 00 03 00 80)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 1a 00 03 00 10)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 1b 00 03 00 10)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 1d 00 03 00 40)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 1e 00 03 00 40)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 20 00 03 00 80)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 21 00 03 00 40)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 22 00 03 00 40)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 23 00 01 00 02)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 24 00 01 00 02)((?:.*?)(?=00)|(?: ZZ ZZ ZZ ZZ))",true,false,true]},{"op":"Register","args":["(?:00 02 00 01 00 02 )((?:[0–9A-F]{2}\\s){2}|(?:ZZ ZZ ZZ ZZ))",true,false,false]},{"op":"Register","args":["(?:00 05 00 01 00 02 )((?:[0–9A-F]{2}\\s){2}|(?:ZZ ZZ ZZ ZZ))",true,false,false]},{"op":"Register","args":["(?:00 06 00 01 00 02 )((?:[0–9A-F]{2}\\s){2}|(?:ZZ ZZ ZZ ZZ))",true,false,false]},{"op":"Register","args":["(?:00 10 00 01 00 02 )((?:[0–9A-F]{2}\\s){2}|(?:ZZ ZZ ZZ ZZ))",true,false,false]},{"op":"Register","args":["(?:00 11 00 01 00 02 )((?:[0–9A-F]{2}\\s){2}|(?:ZZ ZZ ZZ ZZ))",true,false,false]},{"op":"Register","args":["(?:00 12 00 01 00 02 )((?:[0–9A-F]{2}\\s){2}|(?:ZZ ZZ ZZ ZZ))",true,false,false]},{"op":"Register","args":["(?:00 14 00 02 00 04 )((?:[0–9A-F]{2}\\s){2}|(?:ZZ ZZ ZZ ZZ))",true,false,false]},{"op":"Register","args":["(?:00 03 00 02 00 04 )((?:[0–9A-F]{2}\\s){2}|(?:ZZ ZZ ZZ ZZ))",true,false,false]},{"op":"Register","args":["(?:00 13 00 02 00 04 )((?:[0–9A-F]{2}\\s){4}|(?:ZZ ZZ ZZ ZZ))",true,false,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":".*"},"CLEAR",true,false,true,true]},{"op":"Find / Replace","args":[{"option":"Simple string","string":"CLEARCLEAR"},"7b 0a 22 43 32 20 53 65 72 76 65 72 22 3a $R3 2c 0a 22 55 73 65 72 20 41 67 65 6e 74 22 3a $R4 2c 0a 22 48 54 54 50 20 4d 65 74 68 6f 64 20 50 61 74 68 20 32 22 3a $R5 2c 0a 22 48 65 61 64 65 72 20 31 22 3a $R6 2c 0a 22 48 65 61 64 65 72 20 32 22 3a $R7 2c 0a 22 49 6e 6a 65 63 74 69 6f 6e 20 50 72 6f 63 65 73 73 22 3a $R8 2c 0a 22 50 69 70 65 20 4e 61 6d 65 22 3a $R9 2c 0a 22 4d 65 74 68 6f 64 20 31 22 3a $R10 2c 0a 22 4d 65 74 68 6f 64 20 32 22 3a $R11 2c 0a 22 53 70 61 77 6e 20 54 6f 20 78 38 36 22 3a $R12 2c 0a 22 53 70 61 77 6e 20 54 6f 20 78 36 34 22 3a $R13 2c 0a 22 50 72 6f 78 79 20 48 6f 73 74 6e 61 6d 65 22 3a $R14 2c 0a 22 50 72 6f 78 79 20 55 73 65 72 6e 61 6d 65 22 3a $R15 2c 0a 22 50 72 6f 78 79 20 50 61 73 73 77 6f 72 64 22 3a $R16 2c 0a 22 50 72 6f 78 79 20 41 63 63 65 73 73 20 54 79 70 65 22 3a $R17 2c 0a 22 43 72 65 61 74 65 52 65 6d 6f 74 65 54 68 72 65 61 64 22 3a $R18 2c 0a 22 50 6f 72 74 22 3a $R19 2c 0a 22 4a 69 74 74 65 72 22 3a $R20 2c 0a 22 4d 61 78 20 44 4e 53 22 3a $R21 2c 0a 22 59 65 61 72 22 3a $R22 2c 0a 7d",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Simple string","string":"ZZ ZZ ZZ ZZ"},"4e 55 4c 4c",true,false,true,false]},{"op":"From Hex","args":["Auto"]}]
Safe Links is a feature in Defender for Office 365 that provides URL scanning and rewriting of inbound email messages in mail flow, and time-of-click verification of URLs and links in email messages, Teams and Office 365 apps.
Source 1: @WikiJM
Source 2: https://docs.microsoft.com/en-us/microsoft-365/security/office-365-security/safe-links?view=o365-worldwide
[{"op":"Split","args":["?","\\n"]},{"op":"Split","args":["&","\\n"]},{"op":"Split","args":["=","\\n"]},{"op":"Regular expression","args":["User defined","url\\s([^\\s]+)",true,true,false,false,false,false,"List capture groups"]},{"op":"URL Decode","args":[]}]
Qbot? Qakbot? Who cares? With this short and sweet recipe we can extract the malicious URLs from Qakbot Excel maldocs. Pivot from here to other log sources like proxy logs, sysmon, EDR, DNS...you've got all those right?
Credit: @cluster25_io
Source: https://twitter.com/cluster25_io/status/1468248610814971916
[{"op":"Unzip","args":["",false]},{"op":"Strings","args":["16-bit littleendian",10,"All printable chars (U)",false]},{"op":"Filter","args":["Line feed","^\\\"",false]},{"op":"Find / Replace","args":[{"option":"Extended (\\n, \\t, \\x...)","string":"\\x00"},"",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"[\"& ,]"},"",true,false,true,false]}]
Emotet is back! Gianni Amato has whipped up a great recipe using unzip, filter, regex and some other tricks to extract and deobfuscate the embedded PowerShell. A fantastic learning recipe. Great work.
Credit: @guelfoweb
Source: https://twitter.com/guelfoweb/status/1468959342514749451
[{"op":"Unzip","args":["",false]},{"op":"XML Beautify","args":["\\t"]},{"op":"Filter","args":["Line feed","<w:t>.*?<\\/w:t>",false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"3-"},"",true,false,true,false]},{"op":"From HTML Entity","args":[]},{"op":"Regular expression","args":["User defined","(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}==)",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Reverse","args":["Character"]}]
Let's switch to Dridex, and smash their VBS obfuscation with this excellent submission from @Kostastsale. Using subsection the full recipe is kept for any further analysis, but a simple 'Extract URLs' lets us see the (unsurprising) Discord destination.
Credit: @Kostastsale
Source: https://twitter.com/Kostastsale/status/1475375446430609411
[{"op":"Find / Replace","args":[{"option":"Simple string","string":"+1-1"},"",true,false,true,false]},{"op":"Subsection","args":["chr\\((\\d+)\\)",false,true,false]},{"op":"Fork","args":["\\n","\\n",false]},{"op":"From Charcode","args":["Space",10]},{"op":"Merge","args":[]},{"op":"Find / Replace","args":[{"option":"Simple string","string":"chr("},"",true,true,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"(\\)\\s&\\s|\\\"\\s&\\s\\\"|\\\"\\s&\\s|\\\")"},"",true,false,true,false]},{"op":"Extract URLs","args":[false]},{"op":"Defang URL","args":[true,true,true,"Valid domains and full URLs"]}]
Straight forward recipe for converting Strings to the syntax used for VT Grep queries. VirusTotal Syntax Reference
Credit: @th3_protoCOL
Source: https://twitter.com/th3_protoCOL/status/1505288686560186369
[{"op":"To Hex","args":["Space",0]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^"},"content:{",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"$"},"}",true,false,true,false]}]
Regular contributor @thebluetoob cooks a storm here with all the hallmarks of a seasoned CyberChef veteran: Registers, eye-bleeding regex, and a solid understanding of 'getting it done' in CyberChef. Kudos!
Credit: @thebluetoob
[{"op":"Regular expression","args":["User defined","[a-zA-Z0-9=/+]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Decode text","args":["UTF-16LE (1200)"]},{"op":"Register","args":["\\'\\'\\)\\-f\\'\\'([a-zA-Z0-9+=\\/])\\'\\'[\\,\\'\\)]{3}([a-zA-Z0-9+=\\/])?[\\'\\)\\,]{1,5}([a-zA-Z0-9+=\\/])?.*?\\[",true,false,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"\\{[\\'\\+0]*?}"},"$R0",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"\\{[\\'\\+1]*?}"},"$R1",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"\\{[\\'\\+2]*?}"},"$R2",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Simple string","string":"''+''"},"",true,false,true,false]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9=/+]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"Gunzip","args":[]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9=/+]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"From Base64","args":["A-Za-z0-9+/=",true]},{"op":"To Hex","args":["None",0]}]
Nested subsections is a feature available in versions >= 9.46.0. If you have a layered obfuscation and use two subsections you can merge the second layer only without losing your first subsection later. The below recipe is a contrived example and is explained in this Twitter thread.
Source: https://twitter.com/mattnotmax/status/1545990049094778880
[{"op":"Subsection","args":["[a-zA-Z0-9+/=]{100,}",true,true,false]},{"op":"From Base64","args":["A-Za-z0-9+/=",true,false]},{"op":"Subsection","args":["\\\".*\\\"",true,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"\\\""},"",true,false,true,false]},{"op":"From Base64","args":["A-Za-z0-9+/=",true,false]},{"op":"Merge","args":[false]},{"op":"From Hex","args":["Auto"]}]
[{"op":"Subsection","args":["[a-zA-Z0-9+/=]{100,}",true,true,false]},{"op":"From Base64","args":["A-Za-z0-9+/=",true,false]},{"op":"Subsection","args":["\\\".*\\\"",true,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"\\\""},"",true,false,true,false]},{"op":"From Base64","args":["A-Za-z0-9+/=",true,false]},{"op":"Merge","args":[]},{"op":"Subsection","args":["[a-fA-F0-9]{100,}",true,true,false]},{"op":"From Hex","args":["Auto"]}]
MSI files have a master ProductCode GUID for each installer file. This will be referenced in the registry at HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Installer\Products\ with a ProductID. That original ProductCode GUID undergoes a simple transformation that we can do in CyberChef. If you have a malicious .msi file you could look up the corresponding ProductCode, calculate the ProductID and hunt in the registry for artifacts. Try it with the string: {6732E1E0-6629-4B92-A25F-40377D162D15}. Good luck!
Source: https://www.advancedinstaller.com/msi-registration-productid.html
[{"op":"Find / Replace","args":[{"option":"Regex","string":"\\}|\\{|-"},"",true,false,true,false]},{"op":"Subsection","args":["^(\\w{8})",true,true,false]},{"op":"Reverse","args":["Character"]},{"op":"Merge","args":[true]},{"op":"Subsection","args":["^\\w{8}(\\w{4})",true,true,false]},{"op":"Reverse","args":["Character"]},{"op":"Merge","args":[true]},{"op":"Subsection","args":["^\\w{8}\\w{4}(\\w{4})",true,true,false]},{"op":"Reverse","args":["Character"]},{"op":"Merge","args":[true]},{"op":"Subsection","args":["(\\w{16})$",true,true,false]},{"op":"Reverse","args":["Character"]},{"op":"Swap endianness","args":["Hex",8,false]},{"op":"Merge","args":[true]},{"op":"Remove whitespace","args":[true,true,true,true,true,false]},{"op":"To Upper case","args":["All"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^"},"HKEY_LOCAL_MACHINE\\SOFTWARE\\Classes\\Installer\\Products\\",true,false,true,false]}]
Java uses signed integers so character codes need to be converted to unsigned values before we can use the 'From Character Code' operation. Here we extract the byte array from a Java Neo-ReGeorg webshell and conver the data to its class file. From there we can save off the class file and decompile for further analysis.
Source: https://twitter.com/mattnotmax/status/1563106640819150848
Source: https://github.com/L-codes/Neo-reGeorg
[{"op":"Regular expression","args":["User defined","(?<=\\{)([\\-\\d,]+)(?=\\})",true,true,false,false,false,false,"List matches"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"(-\\d+)"},"$1 256",true,false,true,false]},{"op":"Find / Replace","args":[{"option":"Regex","string":","},"\\n",true,false,true,false]},{"op":"Fork","args":["\\n","\\n",false]},{"op":"Sum","args":["Space"]},{"op":"Merge","args":[true]},{"op":"From Charcode","args":["Line feed",10]}]
Bumblebee, the apparent successor to Bazarloader, comes in swinging with a large PowerShell payload containing 113 Base64 blobs. Convert, decompress, substitute, regex-fu, substitute. All in a days work to extra the DLL payload with CyberChef.
Source: https://twitter.com/mattnotmax/status/1564915219507253248
Credit: https://twitter.com/_shtove and https://twitter.com/mattnotmax
[{"op":"Decode text","args":["UTF-16LE (1200)"]},{"op":"Regular expression","args":["User defined","[a-zA-Z0-9+/=]{30,}",true,true,false,false,false,false,"List matches"]},{"op":"Fork","args":["\\n","\\n",false]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^."},"H",true,false,true,false]},{"op":"From Base64","args":["A-Za-z0-9+/=",true,false]},{"op":"Gunzip","args":[]},{"op":"Merge","args":[true]},{"op":"Regular expression","args":["User defined","(?<=0\\n*x)([a-f0-9]{2})(?=,|\\))",true,true,false,false,false,false,"List matches"]},{"op":"From Hex","args":["Auto"]},{"op":"Find / Replace","args":[{"option":"Regex","string":"^."},"M",true,false,false,false]}]
The Network Security Configuration feature lets you customize your app's network security settings in a safe, declarative configuration file without modifying app code. These settings can be configured for specific domains and for a specific app. This recipe can be used to extract some endpoints that can help in your recon:
Credit: https://www.linkedin.com/in/isdebuggerpresent
[{"op":"Regular expression","args":["User defined","includeSubdomains\\=\\\"\\w+\\\"\\>(?<lista>.*)\\<",true,true,false,false,false,false,"List capture groups"]},{"op":"Unique","args":["Line feed",false]}]
I've developed a course 'CyberChef for Security Analysts' which contains 10 hours of instuctional videos plus labs through Applied Network Defense. To find out more visit learncyberchef.com
Twitter #cyberchef
CyberChef & DFIR
CyberChef Docker Image (untested!)
Static Malware Analysis with OLE Tools and CyberChef
Analyzing obfuscated Powershell with shellcode
Solving Simple Crypto Challenges with CyberChef
CyberChef: BASE64/XOR Recipe
Deciphering Browser Hieroglyphics: LocalStorage (Part 2)
Cooking with the Cyber-Chef 2020
13cubed: Cooking with CyberChef
Decoding Metasploit framework and CobaltStrike shells
Hiding Malicious code using windows CMD - Dosfuscation
Splunk TA (Technology Add-on) Example
I haven't tested these, so caveat emptor.
FireFox
Chrome
Burp - SentToCyberChef
CyberSaucier
Official CyberChef Server
Splunk TA (Technology Add-on)
@GlassSec: Zero to Hero with CyberChef
Happy to add (and learn) more. Pull request or tweet to @mattnotmax!
Please include original source of text and recipe developer (if not yourself). For consistency in pasting into CyberChef I have found the best results are to export the function as compact JSON.