Fuzz APIs for Security Vulnerabilities in Bug Bounties

This skill provides comprehensive techniques for testing REST, SOAP, and GraphQL APIs during bug bounty hunting and penetration testing engagements. It covers vulnerability discovery, authentication bypass methods, IDOR (Insecure Direct Object Reference) exploitation, and API-specific attack vectors to help security researchers identify weaknesses in API implementations.

Use this skill when conducting authorized bug bounty programs or penetration testing engagements that include API endpoints. It is ideal for scenarios where you need to test REST, SOAP, or GraphQL APIs for security vulnerabilities, authentication flaws, or authorization issues. Apply this when you have explicit permission to test target APIs.

Do NOT use this skill for unauthorized testing of APIs you do not have permission to assess. Avoid using these techniques on production systems without proper authorization and coordination with the asset owner, as API testing can generate significant traffic and potentially disrupt services.

Users provide the target API endpoints (REST, SOAP, or GraphQL), authentication credentials or tokens if available, and the scope of the authorized testing engagement. The skill delivers techniques for vulnerability discovery, authentication bypass, IDOR exploitation, and API-specific attack vectors.

This skill is designed for bug bounty hunters actively participating in vulnerability disclosure programs, penetration testers conducting security assessments of web applications and APIs, and security researchers focused on API security. It serves professionals who need to test multiple API architectures (REST, SOAP, GraphQL) and identify vulnerabilities like authentication bypasses and authorization flaws.