Corsy is a lightweight program that scans for all known misconfigurations in CORS implementations.
Requirements
It only works with Python 3 and has the following dependencies:
- tld
- requests
To install these dependencies, navigate to the tool directory and execute pip3 install -r requirements.txt
Usage
Using it is pretty simple
python3 corsy.py -u https://example.com
Scan URLs from a file
python3 corsy.py -i /path/urls.txt
Number of threads
python3 corsy.py -u https://example.com -t 20
Also Read – AntiCheat : Framework To Test Any Anti-Cheat
Delay between requests
python3 corsy.py -u https://example.com -d 2
Export results to JSON
python3 corsy.py -i /path/urls.txt -o /path/output.json
Custom HTTP headers
python3 corsy.py -u https://example.com –headers “User-Agent: GoogleBot\nCookie: SESSION=Hacked”
Skip printing tips
-q can be used to skip printing of description, severity, exploitation fields in the output.
Tests implemented
- Pre-domain bypass
- Post-domain bypass
- Backtick bypass
- Null origin bypass
- Unescaped dot bypass
- Invalid value
- Wild card value
- Origin reflection test
- Third party allowance test
- HTTP allowance test
