GitHub Dorking For API Key Exposure And Bug Bounty Success

You Should Know:

GitHub dorking is a powerful technique used by penetration testers and bug bounty hunters to discover sensitive information accidentally exposed in public repositories. In this scenario, the penetration tester found an API key during reconnaissance, which led to a significant bug bounty payout. Below are the steps, commands, and tools you can use to replicate this process:

1. GitHub Dorking Basics:

Use advanced search operators on GitHub to find sensitive data.
Example search query: `filename:.env API_KEY`
– Another example: `org:companyname password`

2. Using cURL to Test API Keys:

Once you find an API key, test its validity using cURL.

Example command:

curl -X GET "https://api.target.com/v1/data" -H "Authorization: Bearer YOUR_API_KEY"

If the API key is valid, you may receive an authentication token or access to sensitive data.

3. Extracting Data:

Use the obtained token to extract additional data.

Example command:

curl -X GET "https://api.target.com/v1/clients" -H "Authorization: Bearer YOUR_AUTH_TOKEN"

4. Automating Reconnaissance:

Use tools like `GitDorker` or `truffleHog` to automate the search for sensitive data in GitHub repositories.

Install GitDorker:

git clone https://github.com/obheda12/GitDorker.git
cd GitDorker
pip3 install -r requirements.txt

Run GitDorker:

python3 GitDorker.py -t YOUR_GITHUB_TOKEN -q "search_query" -o output.txt

5. Reporting the Vulnerability:

Always report your findings responsibly to the organization.
Provide detailed steps to reproduce the issue and the potential impact.

What Undercode Say:

GitHub dorking is a critical skill for penetration testers and bug bounty hunters. By leveraging advanced search techniques and tools like cURL, GitDorker, and truffleHog, you can uncover sensitive information that organizations may unintentionally expose. Always ensure you have permission to test and report vulnerabilities responsibly. Below are some additional Linux and Windows commands to enhance your reconnaissance and testing capabilities:

Linux Commands:
– `grep -r “API_KEY” /path/to/directory` – Search for API keys in files.
– `nmap -p 443 target.com` – Scan for open ports on a target.
– `nikto -h target.com` – Perform a web server vulnerability scan.
Windows Commands:
– `findstr /s /i “API_KEY” *.txt` – Search for API keys in text files.
– `netstat -an` – Display active connections and listening ports.
– `certutil -hashfile file.txt SHA256` – Generate a file hash for integrity checks.

For further reading, check out these resources:

By mastering these techniques and tools, you can significantly improve your chances of success in bug bounty programs and penetration testing engagements.