DOMDig is a DOM XSS scanner that runs inside the Chromium web browser and it can scan single page applications (SPA) recursively.
Unlike other scanners, DOMDig can crawl any webapplication (including gmail) by keeping track of DOM modifications and XHR/fetch/websocket requests and it can simulate a real user interaction by firing events. During this process, XSS payloads are put into input fields and their execution is tracked in order to find injection points and the related URL modifications.
It is based on htcrawl, a node library powerful enough to easily crawl a gmail account.
git clone https://github.com/fcavallarin/domdig.git
cd domdig && npm i && cd ..
node domdig/domdig.js
Example
node domdig.js -c ‘foo=bar’ -p http:127.0.0.1:8080 https://htcap.org/scanme/domxss.php
A login sequence (or initial sequence) is a json object containing a list of actions to take before the scan starts. Each element of the list is an array where the first element is the name of the action to take and the remaining elements are “parameters” to those actions. Actions are:
[
[“write”, “#username”, “demo”],
[“write”, “#password”, “demo”],
[“clickToNavigate”, “#btn-login”]
]
Payloads can be loaded from json file (-P option) as array of strings. To build custom payloads, the string window.___xssSink({0}) must be used as the function to be executed (instead of the classic alert(1))
[
‘;window.___xssSink({0});’,
‘
]
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