Bounty Hunter

Bounty Hunter

Automated smart contract vulnerability scanner for bug bounty programs. Uses free tools (Slither + local LLMs) for the heavy lifting, saves expensive models for PoC writing.

Requirements

• slither-analyzer (pip): Static analysis
• solc-select (pip): Solidity compiler management
• Node.js: For script execution
• Optional: Ollama with any code model for local triage

Quick Start

# Scan a repo
bash scripts/scan.sh <github-repo-url> [src-dir]

# Triage findings (uses local LLM if available, otherwise prints raw)
bash scripts/triage.sh <scan-output.json>

# Generate PoC template for a finding
bash scripts/poc-template.sh <finding-id> <contract-address>

Workflow

1. Target Selection — Check Immunefi/Code4rena for active programs
2. Clone & Scan — scan.sh clones the repo, installs solc, runs Slither
3. Triage — triage.sh filters HIGH/MEDIUM findings, removes known false positives
4. Deep Dive — Only read code that Slither flagged (save your tokens)
5. PoC — Use poc-template.sh to generate Foundry test scaffolding
6. Submit — Write up finding on Immunefi/Code4rena

Target Selection Criteria

Before scanning, check:

• Scope last updated within 30 days (fresh code = more bugs)
• Past payouts > $50K (they actually pay)
• GitHub repo in scope (not just deployed addresses)
• Solidity-based (Slither only works with Solidity)

Anti-Patterns

• Don't read entire codebases manually — let Slither scan first
• Don't spend > 1 hour on a target without a concrete lead
• Don't submit known issues (check past reports first)
• Don't ignore test coverage — untested code is where bugs hide