🔥 HTTP Request Fuzzer

A lightweight Python-based HTTP fuzzing tool designed to automate payload injection and identify potential vulnerabilities in web applications.

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⚡ Overview

This tool simulates real-world fuzzing techniques by sending crafted payloads to target endpoints and analyzing responses for abnormal behavior.

It is built as a foundational step toward understanding:

• Web application security
• Input validation flaws
• Basic vulnerability discovery workflows

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🚀 Features

• Supports GET and POST request fuzzing

• Loads payloads dynamically from external files

• Automated request execution for large payload sets

• Detects suspicious responses based on:

  • Error patterns in responses
  • HTTP 500 status codes
  • Common vulnerability indicators (XSS, SQLi patterns)

• Logs findings for further analysis

• Simple and clean CLI interaction

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🧠 How It Works

1. Accepts a target URL and HTTP method
2. Loads payloads from a user-provided file
3. Injects each payload into the request
4. Sends requests sequentially
5. Analyzes responses for anomalies
6. Logs potential vulnerabilities

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📊 Usage

python http-request-fuzzing-tool.py

Then provide:

• Target URL Example: https://example.com/search?q=

• HTTP Method GET or POST

• Payload File Example: payloads.txt

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📂 Example Payloads

"><script>alert(1)</script>
' OR '1'='1
../../../../etc/passwd
"><img src=x onerror=alert(1)>
admin' --

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📁 Output

Results are stored in:

results.txt

Each log entry includes:

• Payload used
• Response snippet
• Separator for readability

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⚙️ Requirements

• Python 3.x
• requests library

Install dependencies:

pip install requests

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⚠️ Limitations

• Detection is based on simple keyword matching
• No concurrency (sequential execution only)
• No advanced response analysis
• No rate limiting or evasion techniques

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🛠️ Future Improvements

• Add CLI arguments using argparse
• Implement multithreading for faster fuzzing
• Improve detection logic using regex and heuristics
• Export results in JSON format
• Add proxy support (Burp Suite integration)
• Add header fuzzing capability

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🎯 Use Cases

• Learning web security fundamentals
• Practicing payload-based fuzzing
• Testing personal or lab environments
• Building base knowledge for bug bounty

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👤 Author

Mohit Vaishnav

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🔒 Disclaimer

This tool is intended for educational and ethical testing purposes only. Do not use it against systems without proper authorization.