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Priyanshu Shakya and Mukul Goyal earned $50,000 in a bug bounty program by dedicating the first four days solely to setting up the application and studying its documentation. Their success underscores the importance of thorough reconnaissance and preparation in uncovering high-impact vulnerabilities that others might overlook.
Key Takeaway:
Patience + Preparation = High Impact Findings
Rushing into testing without proper setup and documentation review often leads to missed opportunities.
You Should Know:
1. Setting Up the Environment
Before diving into testing, ensure your environment is properly configured:
Linux Commands for Web App Recon:
Clone the target application (if open-source) git clone <target_repo_url> Install dependencies sudo apt update && sudo apt install -y docker-compose npm python3-pip Run a local instance (if Docker is used) docker-compose up -d Check open ports on the local instance netstat -tuln | grep LISTEN Monitor logs in real-time tail -f /var/log/nginx/access.log
Windows Commands for Initial Checks:
Verify running services
Get-Service | Where-Object { $_.Status -eq "Running" }
Check network connections
netstat -ano | findstr LISTENING
Test web server locally
curl http://localhost:8000 -v
2. Documentation Analysis
- API Documentation: Look for hidden endpoints, deprecated functions, or misconfigurations.
- Version History: Check `CHANGELOG.md` or `git log` for recent updates that may introduce flaws.
- Third-Party Libraries: Scan `package.json` or `requirements.txt` for vulnerable dependencies.
Automated Dependency Scanning:
Use npm audit for Node.js apps npm audit Scan Python dependencies for CVEs pip-audit Check outdated packages npm outdated pip list --outdated
3. Manual Testing Techniques
- Burp Suite Configuration: Set up proxy and scope properly.
- Custom Wordlists: Generate using `cewl` for app-specific terms.
cewl https://example.com -w custom_wordlist.txt
- Endpoint Discovery: Use `ffuf` for brute-forcing directories.
ffuf -u https://target.com/FUZZ -w /path/to/wordlist.txt
4. Automation for Efficient Recon
Subdomain enumeration subfinder -d example.com -o subdomains.txt Port scanning with masscan sudo masscan -p1-65535 <target_IP> --rate=1000 -e eth0 Vulnerability scanning with Nuclei nuclei -u https://example.com -t ~/nuclei-templates/
What Undercode Say:
Recon is the backbone of successful bug hunting. Skipping setup and documentation review means missing critical attack surfaces. The best hackers are those who let the application “speak” to them through careful observation.
Prediction:
As applications grow more complex, manual recon combined with smart automation will dominate high-reward bug hunting. Expect more bounty programs to emphasize proper documentation review in their acceptance criteria.
Expected Output:
- A well-documented recon process leading to critical vulnerabilities.
- High-impact findings resulting from patience and structured analysis.
- Increased earnings due to uncovering flaws others missed.
Relevant URLs:
References:
Reported By: Priyanshu Shakya – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
