🔥 SubFury - Subdomain Finder

Find subdomains quickly using Python. Supports HTTP/HTTPS, wordlists, and output saving.

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🚀 Features

• 🔎 Scans for subdomains using your own or default wordlist
• 🌐 Supports https protocol only (no noise from http)
• 🔗 Fetches subdomains directly from crt.sh using --include-crtsh
• 🧵 Fast multithreaded scanning using Python's ThreadPoolExecutor
• 💾 Save found subdomains to an output file using -o
• ⚡ Beginner-friendly and easy to use
• 💥 Graceful exit with Ctrl + C
• 🧠 Merges wordlist + crt.sh results without duplicates

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📦 Installation

1. Clone the repository

git clone https://github.com/yourusername/subfury.git

2. Navigate into the folder
cd SubFury

3. Install requirements
pip install -r requirements.txt

Usage

🚀 Basic Usage

python3 subfury.py example.com

🔍 With Wordlist

python3 subfury.py example.com -w wordlist.txt

🌐 Include crt.sh Subdomains

python3 subfury.py example.com --include-crtsh

💾 Save Output to File

python3 subfury.py example.com -o output.txt

🧩 Combine All Options

python3 subfury.py example.com -w wordlist.txt --include-crtsh -o output.txt

Sample Output

[+] Subdomain Found: http://admin.example.com (Status: 200)
[+] Subdomain Found: https://mail.example.com (Status: 302)

🧾 Requirements

pip3 install -r requirements.txt

👨‍💻 Author

Pavan
🔗 https://pavansec.pro
💬 Young cybersecurity enthusiast from India 🇮🇳

⚠️ Disclaimer

This tool is for educational and authorized security testing only. Do not use on systems you don’t own or have permission to test.

⭐ If you like this tool, give it a star on GitHub to support the project!