cloudflare-origin-ip
Try to find the origin IP of a webapp protected by Cloudflare.
Description
This Python tool compares the HTTP response of the given subdomain to HTTP responses of a list of IPs addresses. This list is based on:
- subdomains supplied by the user
- subdomains found on external sources
- IPs found external sources
Then, a score of similarity is calculated for each response using the Levenshtein algorithm.
Install
git clone https://github.com/gwen001/cloudflare-origin-ip
cd cloudflare-origin-ip
pip3 install -r requirements.txt
Depending the sources you want to use, you'll need to create environment variables:
- Censys:
CENSYS_UIDandCENSYS_SECRET - SecurityTrails:
SECURITY_TRAILS_API_KEY
Usage
$ python3 cloudflare-origin-ip.py <url>
usage: cloudflare-origin-ip.py [-h] [-u URL] [-s SOURCE]
options:
-h, --help show this help message and exit
-u URL, --url URL url to test
-s SOURCE, --source SOURCE
datas sources separated by coma, can be: censys,crtsh,securitytrails,local file
Examples:
cloudflare-origin-ip.py -u https://xxx.xxxxxxxxxxxx.xxx
cloudflare-origin-ip.py -u https://xxx.xxxxxxxxxxxx.xxx -s censys,crtsh,securitytrails (default)
cloudflare-origin-ip.py -u https://xxx.xxxxxxxxxxxx.xxx -s /home/local/ips.txt
cloudflare-origin-ip.py -u https://xxx.xxxxxxxxxxxx.xxx -s censys,crtsh,/home/local/ips.txt,/home/local/subdomains.txt
How it works
1/ Performs a HTTP request to the URL provided, this is the reference request.
2/ Grabs IPs using several sources:
- censys (key required)
- crtsh
- securitytrails (key required)
- local file
3/ Performs a HTTP request to all IPs grabbed with the header Host setted to the subdomain of the reference request.
4/ Compares the responses obtained with the response of the reference request using the Levenshtein algorithm.
5/ Displays a score of similarity.
Feel free to open an issue if you have any problem with the script.