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Introduction:
Bug bounty hunting is a critical skill in cybersecurity, enabling ethical hackers to identify vulnerabilities before malicious actors exploit them. In Part 2 of Wesley Thijs’ BBGMA – Full Bug Bounty Guide, we dive into practical exploitation techniques, combining hands-on labs with real-world scenarios. This article distills key technical takeaways, providing verified commands, code snippets, and step-by-step tutorials to sharpen your offensive security skills.
Learning Objectives:
- Understand common bug bounty exploitation methodologies.
- Master Linux/Windows commands for vulnerability assessment.
- Apply ethical hacking techniques in controlled environments.
1. Reconnaissance with Nmap
Command:
nmap -sV -T4 -p- --script vuln <target_IP>
Step-by-Step Guide:
1. `-sV`: Enables service version detection.
2. `-T4`: Aggressive timing template for faster scans.
--script vuln: Runs NSE scripts to check for known vulnerabilities.- Analyze open ports and services to identify potential attack vectors.
2. Exploiting SQL Injection with SQLmap
Command:
sqlmap -u "http://target.com/page?id=1" --dbs --batch
Step-by-Step Guide:
1. `-u`: Specifies the vulnerable URL.
2. `–dbs`: Enumerates databases.
3. `–batch`: Automates default responses.
4. Extract sensitive data like usernames/passwords from databases.
3. Privilege Escalation on Linux
Command:
sudo -l find / -perm -4000 2>/dev/null
Step-by-Step Guide:
sudo -l: Lists allowed sudo commands for the current user.find / -perm -4000: Searches for SUID binaries (common privilege escalation vectors).
3. Exploit misconfigured permissions to gain root access.
4. Windows Lateral Movement with PsExec
Command (PowerShell):
PsExec.exe \<target_IP> -u <username> -p <password> cmd.exe
Step-by-Step Guide:
1. `PsExec`: Sysinternals tool for remote command execution.
- Replace
<target_IP>,<username>, and `` with valid credentials. - Execute commands on compromised systems to pivot through networks.
5. API Security Testing with Postman
Code Snippet (JavaScript for Postman):
pm.sendRequest("https://api.target.com/data", (err, res) => {
if (err) console.log(err);
else pm.environment.set("auth_token", res.json().token);
});
Step-by-Step Guide:
1. Test endpoints for insecure data exposure.
- Manipulate requests to bypass authentication (e.g., JWT tampering).
3. Use environment variables to automate token extraction.
6. Cloud Hardening in AWS
AWS CLI Command:
aws iam update-account-password-policy --minimum-password-length 12
Step-by-Step Guide:
- Enforce strong password policies to mitigate brute-force attacks.
- Regularly audit IAM roles using
aws iam list-users.
3. Enable MFA via `aws iam enable-mfa-device`.
- Mitigating XSS with Content Security Policy (CSP)
HTTP Header Example:
Content-Security-Policy: default-src 'self'; script-src 'unsafe-inline'
Step-by-Step Guide:
1. Restrict inline scripts to prevent DOM-based XSS.
2. Test policies using browser developer tools.
3. Monitor violations with `report-uri`.
What Undercode Say:
- Key Takeaway 1: Reconnaissance is the foundation of successful exploitation—always map your target thoroughly.
- Key Takeaway 2: Automation (e.g., SQLmap, Nmap scripts) accelerates vulnerability discovery but requires ethical constraints.
Analysis:
Bug bounty programs are evolving with AI-driven tools (e.g., Burp Suite’s ML-powered scanning). However, human ingenuity remains irreplaceable for logic flaws and advanced pivoting. The rise of API and cloud vulnerabilities demands updated skill sets, emphasizing continuous learning via labs and certifications like OSCP.
Prediction:
By 2025, bug bounty platforms will integrate AI-assisted triage, reducing false positives and rewarding high-impact findings faster. Ethical hackers must adapt to AI-augmented attacks, focusing on creative exploitation beyond automated scans.
For deeper insights, watch Wesley Thijs’ BBGMA Part 2 and practice these techniques in controlled environments.
IT/Security Reporter URL:
Reported By: Wesley Thijs – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
