Usage

Open aes-finder.sln solution in Visual Studio 2013 to compile source. Alternatively use gcc/clang:

g++ -O3 -march=native -fomit-frame-pointer aes-finder.cpp -o aes-finder

To search for keys in process with id = 123, execute following:

aes-finder.exe -123 

To search for keys in any process with name chrome.exe, execute following:

aes-finder.exe chrome.exe

Now you can see what kind of AES keys are used in your favorite application!

Putty

C:\>aes-finder.exe putty.exe
Searching PID 2180 ...
[0016C904] Found AES-256 encryption key: 000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f
[0016C9F4] Found AES-256 decryption key: 000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f
[00AA4540] Found AES-256 encryption key: e2855dae921dba978ffd713e89540101144de13f468fd5da8623608255387dbc
[00AA4720] Found AES-256 decryption key: e2855dae921dba978ffd713e89540101144de13f468fd5da8623608255387dbc
[00AA5458] Found AES-256 encryption key: 892372c26c5601a28e5dd20a64976faa219907c6c9a33a9d1ff3376609bd53f7
[00AA5638] Found AES-256 decryption key: 892372c26c5601a28e5dd20a64976faa219907c6c9a33a9d1ff3376609bd53f7
Done!

Dropbox

C:\>aes-finder.exe dropbox.exe
Searching PID 2204 ...
[00F5DDE8] Found AES-128 encryption key: e73c856f10e56d8ded0510e964e71b33
... many identical keys
[0363A708] Found AES-128 encryption key: e73c856f10e56d8ded0510e964e71b33
[03710A24] Found AES-128 encryption key: 0e7484bb0230b137eb582bae6ea17e09
[03710C40] Found AES-128 encryption key: 0e7484bb0230b137eb582bae6ea17e09
[03716388] Found AES-128 encryption key: e73c856f10e56d8ded0510e964e71b33
... many identical keys
[03747888] Found AES-128 encryption key: e73c856f10e56d8ded0510e964e71b33
[038721A8] Found AES-256 encryption key: 90e804d380d6c279de1d0373a24010ffcbccb8a177f4fffaaa007fa2b07bbe35
[03872318] Found AES-256 decryption key: 69d292fb3bc5edb2008e2687b40321f01ce1077c0570819ef666f5079b233064
[0388480C] Found AES-128 encryption key: 0e7484bb0230b137eb582bae6ea17e09
[03884A28] Found AES-128 encryption key: 0e7484bb0230b137eb582bae6ea17e09
[03892330] Found AES-2   56 encryption key: 8843f5b83b0bc88ffefcdc4a6fb1dbec2a2216001d23ef714e3fcad2b106fa4a
[038E6F88] Found AES-256 decryption key: 845e5cd8a07200ed53df003b4524872e5a1b8faa931c285602ef4b091c80a8f6
[038FD6E0] Found AES-128 encryption key: 6108ca5991b2d070ba9109ca92895f5d
[03918310] Found AES-256 encryption key: 55a832a0756807b89d26bfeb2fd0c20affec0444ccc5f8826f1e4c0097bc4961
[0391DD68] Found AES-256 encryption key: 0495d0bc9b05b893ada8eb36c5fbbfefab3cccd4566accbf18c1a078faae970d
[0391DF00] Found AES-256 decryption key: fd4c481f479f9a66677adc42060689d1bb95529b217265fec7664e0fd0e990b2
[0393AB48] Found AES-256 decryption key: 471c720862d7d1329d0a1320a5eaea4ce7a8693ac75e9c732a0c4392aeb3d21e
[039480A0] Found AES-128 encryption key: 6108ca5991b2d070ba9109ca92895f5d
[0394B508] Found AES-128 encryption key: 6108ca5991b2d070ba9109ca92895f5d
[03950418] Found AES-256 encryption key: bbc3ede28857b90389452846e4b80ca5e262ef57ce918ce17c89b6598993faa4
[039E1A24] Foun   d AES-128 encryption key: afde7f5a3184111f877f0e8b61f85ad8
[039E1C40] Found AES-128 encryption key: afde7f5a3184111f877f0e8b61f85ad8
[039F5668] Found AES-256 encryption key: b48ac86c598e3051e1e00f17cb47256c0e6735a694ab3c1282ee9086d38d2647
[039F5870] Found AES-256 decryption key: 9e12c27da800ada221a60112171ac32b7b2c4781a7d45407fc6aaff2800b67d9
[03A0BD18] Found AES-128 encryption key: 6108ca5991b2d070ba9109ca92895f5d
[03A0EA7C] Found AES-256 encryption key: 28ad3cba4b91556825a3f301358901416eb16253b0bc7e43be0303caa53a001e
[03A0EB6C] Found AES-256 decryption key: 28ad3cba4b91556825a3f301358901416eb16253b0bc7e43be0303caa53a001e
[071868B0] Found AES-256 decryption key: 7a1d726b3b7c81a65887e12296d3102ead96a3a71a100fd4c48ccbc421f3d570
Done!

Chrome

C:\>aes-finder.exe chrome.exe
Searching PID 1792 ...
[08D8302C] Found AES-256 decryption key: c73159441a23df68b292a666a082418048a844813dfe8636126e875204813291
[08D8326C] Found AES-256 encryption key: a85f43b1515c848bcb99a94f8b3ff815bcab2ff37b67954d21231c9744651f80
[08D834AC] Found AES-256 decryption key: 22715913a08a86472a85c711fe7674180c07cc19cc0683e95dd9f0c7526387c6
[08D8446C] Found AES-256 decryption key: 2c7d5043ae8d2800cef6b5fe82776eaaa13a1911f97f15d34172aaf4e0cf1d74
... lot of random keys
[0907326C] Found AES-256 decryption key: 28e941c0801544a85c1832510e935d44a3ae096397bbdeb5eb8608d2b1fcc18f
[090734AC] Found AES-256 encryption key: 4ffc20368848fdc739bb3420cbd5d8333ab6f478ba601309e2bab7db0427047b
[0907392C] Found AES-256 encryption key: f857325597da770d3a4589b5a585671d33221c108aab002c30a181b79c3c99ed
[09073B6C] Found AES-128 decryption key: d5f782a86d7f1e3c403cbe349c2844c1
[09073DAC] Found AES-128 encryption key: cdfb40a   1b13d7cfd0f7fd2687848d3de
[09073FEC] Found AES-128 decryption key: ce3be55b440620be4aa73e33c325456f
[0907422C] Found AES-128 encryption key: 1954a522cf12287a245d66786d78bba5
[0907446C] Found AES-128 decryption key: 7972ca8c29805c44bacc6a70691a606d
[090746AC] Found AES-128 encryption key: 266ffef00c92cd372d8dce1436a124d7
[090748EC] Found AES-128 decryption key: 1afa9ef367fe19278cdd7d060b397813
[09074B2C] Found AES-128 encryption key: b7fcd6a9915be8d562f376f8e30b34a3
[09074D6C] Found AES-128 decryption key: 4e150e928eb9f4366c93d7d664b53587
[090F702C] Found AES-128 encryption key: 6f3701e7a085102e9b69ffa1c5a7d52d
[090F726C] Found AES-128 decryption key: 71a46909719d714ebe29e1fb13ba3bc1
[090F74AC] Found AES-128 encryption key: 526d886eaa03c0a7e36918eb741ba4a9
Searching PID 2744 ...
Searching PID 3592 ...
Done!

Python + PyCrypto

C:\>start python -c "from Crypto.Cipher import AES; a=AES.new('\x42'*24, AES.MODE_ECB); input()"

C:\>aes-finder.exe python.exe
Searching PID 264 ...
[00B84074] Found AES-192 encryption key: 424242424242424242424242424242424242424242424242
[00B84164] Found AES-192 decryption key: 424242424242424242424242424242424242424242424242
Done!    

sshd on Linux

$ sudo ./aes-finder sshd
Searching PID 3307 ...
Searching PID 10428 ...
Searching PID 10430 ...
[0x7fc39b3132d0] Found AES-128 encryption key: df435cfcd8830df858203c0ad2db51ca
[0x7fc39b313450] Found AES-128 encryption key: 0ad922797aba3078841bc298104bb39a
Done!

iTunes on Mac OS X

$ sudo ./aes-finder iTunes
Searching PID 40912 ...
[0x7fe073e7dd3c] Found AES-128 encryption key: 743554fb48b78d29ad73fbd231373982
[0x7fe073e7de00] Found AES-128 encryption key: 743554fb48b78d29ad73fbd231373982
[0x7fe0758aaa88] Found AES-128 encryption key: dc4b5af0c373c4b3cf1158fe0a42022f
[0x7fe0758aab78] Found AES-128 decryption key: dc4b5af0c373c4b3cf1158fe0a42022f
[0x7fe0758aac6c] Found AES-128 encryption key: 000102030405060708090a0b0c0d0e0f
[0x7fe0758aad5c] Found AES-128 decryption key: 000102030405060708090a0b0c0d0e0f
Done!

Notes

• does not work on whitebox AES keys
• 32-bit binary can search only in 32-bit processes, 64-bit binary can search in both - 32 and 64-bit ones
• "encryption key" means that this key can be used for encryption or decryption
• "decryption key" means that this key most likely is used only for decryption
• on Linux requires at least v3.2 kernel (process_vm_readv syscall)