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Introduction:
Transitioning from a programmer to a penetration tester or bug bounty hunter requires shifting from a builder’s mindset to a breaker’s perspective. This guide outlines a structured approach, covering OWASP Top 10 exploits, API security, recon workflows, and hands-on bug hunting techniques.
Learning Objectives:
- Master OWASP Top 10 vulnerabilities and exploitation methods.
- Develop an attacker’s mindset for identifying security flaws.
- Build a structured bug bounty workflow from recon to reporting.
You Should Know:
1. OWASP Top 10 Exploitation Techniques
Reference: OWASP Top 10 – 2023 (A01-A05), OWASP Top 10 – 2023 (A06-A10)
Command (SQL Injection Test):
' OR '1'='1' --
Step-by-Step:
- Inject the payload into a login form’s username field.
- If the application is vulnerable, it may bypass authentication.
- Always test in authorized environments (e.g., DVWA, PortSwigger Labs).
2. Cross-Site Scripting (XSS) Deep Dive
Reference: The XSS Guide, What is XSS?
Payload (Stored XSS):
<script>alert(document.cookie)</script>
Step-by-Step:
- Submit the payload in a comment field or user input.
- If stored improperly, it executes when another user views the page.
- Use Burp Suite or BeEF for advanced exploitation.
3. Broken Access Control & IDOR Testing
Reference: Broken Access Control Guide
Exploit (IDOR via URL Manipulation):
Change:
[/bash]
https://example.com/profile?id=123
To:
https://example.com/profile?id=124
Step-by-Step: 1. Log in as a low-privilege user. 2. Modify the `id` parameter to access unauthorized data. 3. Report if sensitive data is exposed. <ol> <li>API Security Testing Reference: <a href="https://lnkd.in/eYx8BZ43">API Security Testing Guide</a> </li> </ol> Command (JWT Token Tampering): [bash] echo -n "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c" | base64 -d
Step-by-Step:
1. Decode the JWT token to inspect claims.
2. Modify `”role”: “user”` to `”role”: “admin”`.
3. Re-sign with a weak key (e.g., `secret`).
5. Reconnaissance Workflow for Bug Bounties
Reference: How To Do Recon for Bug Bounties
Command (Subdomain Enumeration):
subfinder -d example.com -o subdomains.txt
Step-by-Step:
1. Install Subfinder (`go install github.com/projectdiscovery/subfinder/v2/cmd/subfinder@latest`).
2. Run against a target domain.
3. Feed results into httpx for live hosts:
cat subdomains.txt | httpx -silent
6. Bug Bounty Reporting & Automation
Reference: Uncle Rat’s Bug Bounty Guide
Command (Automated Vulnerability Scanning):
nuclei -u https://example.com -t ~/nuclei-templates/
Step-by-Step:
1. Install Nuclei (`go install github.com/projectdiscovery/nuclei/v2/cmd/nuclei@latest`).
2. Run pre-built templates against a target.
3. Validate findings manually before reporting.
What Undercode Say:
- Key Takeaway 1: Transitioning to offensive security requires hands-on practice—labs and real-world bug reports are essential.
- Key Takeaway 2: API security and recon automation are high-value skills in modern bug bounty hunting.
Analysis:
The cybersecurity landscape is evolving, with APIs and automation playing pivotal roles. Developers with coding experience have an edge in understanding logic flaws and crafting custom exploits. Future trends suggest AI-assisted hacking tools will further streamline recon and vulnerability discovery, making continuous learning critical.
Prediction:
By 2026, AI-powered penetration testing tools will dominate bug bounty programs, reducing manual effort but increasing competition. Ethical hackers must adapt by mastering automation and advanced exploitation techniques.
Final Word: Follow the roadmap, practice relentlessly, and engage with communities like The XSS Rat Discord to stay ahead. Happy hacking! 🚀
🎯Let’s Practice For Free:
IT/Security Reporter URL:
Reported By: Wesley Thijs – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
