403 Bypass Testing Tool is an advanced Python utility crafted for professional penetration testers and bug bounty hunters. Its mission: to automate the discovery of misconfigured access controls and explore ways to bypass 403 Forbidden restrictions on web servers using proven URL and HTTP header manipulation techniques.
Author: Nithin
- 🚀 Automated Testing: Effortlessly tests a wide range of known 403 bypass payloads—URL-walking, path manipulation, and header-based tricks.
- ⚡ Multi-Threaded: Fast and efficient, thanks to concurrent execution with user-controlled thread count.
- 🌈 Interactive & Colorful: Clean, color-coded terminal output—quickly spot successful bypasses, warnings, and errors.
- 🧰 Custom Wordlists: Easily swap or extend with your own payload and header lists.
- 📄 Comprehensive Reporting: Save all discovered bypasses in a CSV file for further analysis or responsible disclosure.
- 🔁 Robust: Implements session retries, configurable timeouts, and SSL verification options for reliable scanning in all network conditions.
- Install requirements pip install -r requirements.txt --break-system-packages
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- Single Target Example python3 403bypass.py -u https://example.com/secret/
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- Multiple Targets Example python3 403bypass.py -l urls.txt
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- Save Results python3 403bypass.py -u https://example.com/protected/ -o bypasses.csv
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- Customize Payloads/Headers
- Edit
403_url_payloads.txtfor URL tricks. - Edit
403_header_payloads.txtfor header manipulations.
- Threads & Timeout python3 403bypass.py -u https://example.com/ -t 10 --timeout 5
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- Disable SSL Verification python3 403bypass.py -u https://example.com/ --no-verify
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[i] Loaded 50 URL payloads [+] Bypass successful: https://example.com/secret/.;/ [+] Bypass successful: X-Original-URL: /admin/login Test summary: Total tests=100, Bypasses=2, Errors=0 Saved 2 bypasses to bypasses.csv
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- Authorization Required: Only test targets where you have clear, explicit permission.
- No Malicious Activity: This tool is for security research, penetration testing, and bug bounty use—never for illegal hacking or unauthorized probing.
- Always report vulnerabilities responsibly via proper disclosure processes.
Inspired by community research and the collaborative efforts of the bug bounty and ethical hacking community. Contributions, feature requests, and PRs are welcome!