CF-Hero: A Cloudflare IP Discovery Tool for Reconnaissance

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CF-Hero is a powerful reconnaissance tool designed to uncover the real IP addresses of web applications protected by Cloudflare. It employs multi-source intelligence gathering techniques to bypass Cloudflare’s security measures, aiding penetration testers and security researchers in identifying actual server locations.

GitHub Repository: CF-Hero

You Should Know:

How CF-Hero Works

CF-Hero uses multiple methods to detect real IPs behind Cloudflare:
1. DNS History Lookup – Checks historical DNS records for exposed IPs.
2. SSL Certificate Analysis – Extracts IPs from past SSL certificates.
3. Subdomain Enumeration – Finds unprotected subdomains pointing to the origin server.
4. Cloudflare Misconfigurations – Exploits leaks in Cloudflare settings.

Installation & Usage

git clone https://github.com/BlackstormSecurity/CF-Hero.git 
cd CF-Hero 
pip install -r requirements.txt 
python cf-hero.py -d target.com

Key Commands for Reconnaissance

  • DNS Lookup:
    dig target.com +short 
nslookup target.com

  • Historical DNS Check (Using Wayback Machine):

    curl "http://web.archive.org/cdx/search/cdx?url=.target.com/&output=json"

  • Subdomain Bruteforcing:

    subfinder -d target.com -o subdomains.txt

  • SSL Certificate Extraction:

    openssl s_client -connect target.com:443 | openssl x509 -noout -text | grep "DNS:"

  • Cloudflare Bypass via Misconfigured Headers:

    curl -I https://target.com -H "Host: origin.target.com"

What Undercode Say

CF-Hero is a valuable tool for ethical hackers conducting reconnaissance on Cloudflare-protected targets. However, misuse can lead to legal consequences. Always ensure proper authorization before testing.

For defenders, mitigating such attacks involves:

  • Restricting direct IP access via firewall rules.
  • Monitoring DNS history leaks.
  • Ensuring all subdomains are properly secured.

Prediction

As Cloudflare improves its defenses, tools like CF-Hero will evolve, incorporating AI-driven IP detection and deeper OSINT techniques. Expect more automation in reconnaissance workflows.

Expected Output:

[+] Target: target.com 
[+] Real IP Found: 192.168.1.100 
[+] Subdomains Exposed: admin.target.com, test.target.com 
[+] Historical IPs: 203.0.113.45 (via Wayback Machine)

IT/Security Reporter URL:

Reported By: Blackstormsecresearch Threathunting – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

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