Chapter 14 — FuzzMaster
Based on: SIH1750 — Creating a Comprehensive Web Application Fuzzer
Skills Required:
- Web application security
- Fuzzing methodologies (mutation-based, generation-based)
- Protocol grammar design
- Python programming
- OWASP testing framework
- CI/CD integration
- Docker and cloud deployment basics
Project Description:
FuzzMaster is an advanced web application fuzzing framework designed for comprehensive security testing. It combines grammar-based payload generation, session-aware fuzzing, and coverage-guided feedback to discover vulnerabilities including SQL Injection, XSS, CSRF, and business logic flaws. The tool integrates seamlessly with CI/CD pipelines to enable continuous fuzz testing of web applications, enhancing secure development lifecycles.
Tech Stack:
- Python for fuzzing engine and payload mutation
- Grammar specification language for defining protocol rules
- Burp Suite and OWASP ZAP for integration and replay capabilities
- Coverage feedback with instrumentation tools (e.g., code coverage agents)
- Docker for containerization
- CI/CD platforms like Jenkins or GitLab
Week-wise Plan:
Week 1 — Setup and Grammar Definition
- Define target web application protocols, inputs, and workflows.
- Develop protocol grammar files specifying valid request/response structures.
- Initialize project repositories and build basic payload mutators.
- Deliverable: Grammar definitions and initial payload generator.
Week 2 — Session and Context Handling
- Add session management to maintain authentication states during fuzzing.
- Implement CSRF and anti-replay token handling in generated requests.
- Build state machine for multi-step workflows.
- Deliverable: Session-aware fuzzing engine.
Week 3 — Coverage-Guided Feedback
- Integrate code coverage tools to monitor execution paths during fuzzing.
- Develop feedback loop to prioritize payloads maximizing code coverage.
- Deliverable: Coverage-guided fuzzing prototype.
Week 4 — Payload Mutation and Generation
- Enhance payload mutators with context-sensitive mutation (e.g., SQL syntax).
- Implement generation-based payloads from grammar expansions.
- Deliverable: Combined mutation+generation payload engine.
Week 5 — Integration with Existing Tools
- Build connectors for Burp Suite and OWASP ZAP to send fuzzed requests.
- Enable result ingestion and deduplication from external tools.
- Deliverable: Integration modules and data normalization engine.
Week 6 — Continuous Fuzzing and Automation
- Setup CI/CD integration for triggering fuzzing on new builds.
- Automate report generation for results from ongoing fuzz campaigns.
- Deliverable: CI/CD pipeline integration with automated fuzz runs.
Week 7 — Reporting and Dashboard
- Develop dashboards to visualize fuzzing progress, coverage, and vulnerabilities discovered.
- Implement filters, drill-down analytics, and export functionality.
- Deliverable: Interactive reporting dashboard.
Week 8 — Testing and Final Documentation
- Perform extensive fuzzing against benchmark targets (e.g., OWASP Juice Shop).
- Refine engine performance and instrumentation overhead.
- Prepare user and developer documentation.
- Deliverable: Tested fuzzing framework with full documentation and demo.
Testing and Deliverables:
- Deploy in lab environment against web app targets.
- Measure code coverage improvements and vulnerability finds.
- Deliver source code, grammar files, CI/CD configs, and demo videos.