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Introduction
Bug bounty hunting is a critical component of modern cybersecurity, allowing ethical hackers to identify vulnerabilities before malicious actors exploit them. Platforms like HackerOne provide a structured way for security researchers to report flaws and earn rewards. In this guide, we’ll explore key tools, commands, and methodologies used by successful bug bounty hunters.
Learning Objectives
- Understand the fundamentals of bug bounty hunting and vulnerability disclosure.
- Learn essential Linux and Windows commands for security testing.
- Master web exploitation techniques and API security testing.
You Should Know
1. Reconnaissance with Subdomain Enumeration
Command:
subfinder -d example.com -o subdomains.txt
Step-by-Step Guide:
- Install Subfinder:
go install -v github.com/projectdiscovery/subfinder/v2/cmd/subfinder@latest
- Run the command to find subdomains of
example.com.
3. Save results to `subdomains.txt` for further analysis.
Why It Matters: Subdomain discovery helps identify potential attack surfaces.
2. Directory Bruteforcing with FFUF
Command:
ffuf -w wordlist.txt -u https://example.com/FUZZ
Step-by-Step Guide:
1. Download a wordlist (e.g., `common.txt` from SecLists).
- Run FFUF to brute-force directories on a target website.
3. Analyze discovered paths for hidden endpoints.
Why It Matters: Exposed directories may reveal sensitive files or misconfigurations.
- API Security Testing with Postman & Burp Suite
Steps:
1. Intercept API requests using Burp Suite.
2. Test for common vulnerabilities like:
- Broken Object Level Authorization (BOLA)
- SQL Injection via malformed input
- Improper rate limiting
Why It Matters: APIs are a prime target for attackers; thorough testing prevents breaches.
4. Exploiting XSS with Payloads
Payload Example:
<script>alert(document.domain)</script>
Step-by-Step Guide:
1. Identify input fields (search bars, forms).
2. Inject the payload and check for execution.
3. Report if the site reflects untrusted input.
Why It Matters: XSS can lead to session hijacking and data theft.
5. Mitigating SQL Injection
Vulnerable Query Example:
SELECT FROM users WHERE username = 'admin' AND password = 'password' OR '1'='1';
Mitigation (Parameterized Query):
cursor.execute("SELECT FROM users WHERE username = %s AND password = %s", (user, pass))
Why It Matters: SQLi is a leading cause of data breaches; proper coding prevents exploitation.
What Undercode Say
- Key Takeaway 1: Bug bounty hunting requires persistence—even “informative” reports contribute to learning.
- Key Takeaway 2: Automation (tools like Subfinder, FFUF) accelerates reconnaissance, but manual testing uncovers complex flaws.
Analysis:
The rise of bug bounty programs reflects a shift toward proactive security. While automated tools streamline discovery, human intuition remains irreplaceable in identifying logic flaws. As platforms like HackerOne grow, ethical hackers must stay updated on emerging threats (e.g., API abuses, zero-days).
Prediction
With increasing API adoption and cloud migration, future bug bounty trends will focus on:
– Cloud Misconfigurations (e.g., exposed S3 buckets).
– AI-Driven Attacks (e.g., poisoning ML models).
– IoT Exploits (poorly secured devices).
By mastering these techniques, ethical hackers can stay ahead in an evolving threat landscape. 🚀
🎯Let’s Practice For Free:
IT/Security Reporter URL:
Reported By: Dhanush G – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
