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Bug hunting is a critical skill in cybersecurity, and discovering duplicate bugs—even if they aren’t valid—is a step toward mastering vulnerability research. Below, we’ll break down the process of identifying bugs in Shopify, along with practical commands, tools, and techniques used by professional bug hunters.
You Should Know:
1. Reconnaissance & Target Mapping
Before hunting for bugs, gather as much information as possible about Shopify’s infrastructure:
Subdomain enumeration using Amass amass enum -d shopify.com -o shopify_subs.txt Waybackurls for historical endpoints waybackurls shopify.com | tee shopify_urls.txt Use FFuF for directory brute-forcing ffuf -w /path/to/wordlist -u https://shopify.com/FUZZ -mc 200
2. Identifying Common Shopify Vulnerabilities
Shopify’s common bug classes include:
- XSS (Cross-Site Scripting)
- CSRF (Cross-Site Request Forgery)
- IDOR (Insecure Direct Object Reference)
Testing for XSS:
// Basic payload test <script>alert(document.domain)</script> // DOM-based XSS check '+alert(1)+'
- Automated Scanning with Burp Suite & Nuclei
- Burp Suite: Intercept requests and modify parameters to test for logic flaws.
- Nuclei Templates for Shopify:
nuclei -t shopify-detections.yaml -l shopify_urls.txt
4. Duplicate Bug Handling
If you find a duplicate:
- Verify if it’s truly a duplicate (sometimes reports differ in impact).
- Check HackerOne’s disclosed reports for similar issues.
- Improve methodology—try different endpoints or attack vectors.
What Undercode Say:
Bug hunting is a mix of persistence and creativity. Even duplicates teach you how platforms are secured. Key takeaways:
– Always document findings (obsidian.md or notion.so).
– Automate repetitive tasks (bash/python scripts).
– Learn from rejections—HackerOne’s feedback improves skills.
Expected Output:
A refined bug report with:
✔ Verified PoC (Proof of Concept)
✔ Clear impact analysis
✔ Suggested remediation
Prediction:
As Shopify’s attack surface evolves, new bug classes (e.g., GraphQL injections, OAuth misconfigurations) will emerge. Hunters who master automation and advanced fuzzing will dominate.
Relevant URLs:
(End of report)
References:
Reported By: Yasmeen Rezk – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
