A comprehensive Solidity vulnerability assessment tool designed for Web3 developers and security researchers. This tool provides deep analysis of smart contracts, identifying security vulnerabilities, gas optimization opportunities, and compliance issues.

Features

• Advanced Vulnerability Detection - Identifies complex security issues in Solidity contracts
• Gas Analysis - Comprehensive gas usage analysis and optimization suggestions
• Compliance Checking - Validates contracts against industry standards and best practices
• Interactive Reports - Detailed, interactive security reports with remediation guidance
• Integration Support - Seamless integration with development workflows and CI/CD pipelines
• Custom Rule Engine - Support for custom security rules and patterns
• Multi-Contract Analysis - Analyzes entire contract ecosystems and dependencies

Security Analysis Capabilities

Critical Vulnerabilities

• Reentrancy Attacks - Advanced detection of reentrancy patterns
• Integer Overflow/Underflow - Comprehensive arithmetic vulnerability analysis
• Access Control Issues - Detailed access control mechanism validation
• Unchecked External Calls - Analysis of dangerous external interactions
• Front-Running Vulnerabilities - Detection of MEV and front-running risks

High Priority Issues

• Storage Optimization - Advanced storage layout analysis
• Function Optimization - Gas-efficient function pattern suggestions
• Event Emission - Transparency and logging validation
• Error Handling - Comprehensive error handling analysis

Medium Priority Issues

• Code Quality - Code smell detection and anti-pattern identification
• Documentation - NatSpec documentation compliance checking
• Naming Conventions - Solidity naming standard validation
• Import Organization - Import structure optimization

Tech Stack

• Core Engine: Python 3.9+ with custom Solidity parser
• Analysis Framework: Advanced static analysis with symbolic execution
• Vulnerability Database: Curated database of known Web3 vulnerabilities
• Reporting Engine: Multi-format reporting (HTML, JSON, PDF, Markdown)
• Integration APIs: RESTful API for custom integrations

Installation & Setup

1. Clone the repository:

   git clone https://github.com/1cbyc/web3-secure-audit.git
   cd web3-secure-audit
   

2. Install dependencies:

   pip install -r requirements.txt
   

3. Configure the tool:

   cp config.example.yaml config.yaml
   # Edit configuration file with your preferences
   

4. Run analysis:

   python web3_audit.py --contract path/to/contract.sol
   

Usage Examples

Basic Contract Analysis

python web3_audit.py --contract contracts/Token.sol

Comprehensive Project Analysis

python web3_audit.py \
  --project contracts/ \
  --output detailed-report.html \
  --severity critical,high,medium \
  --include-gas-analysis \
  --include-compliance-check

CI/CD Integration

# GitHub Actions workflow
- name: Web3 Security Audit
  run: |
    python web3_audit.py --project contracts/ --output audit-report.json
    python web3_audit.py --validate-report audit-report.json --max-critical 0

Sample Analysis Output

{
  "contract": "Token.sol",
  "analysis_date": "2024-01-25T14:30:00Z",
  "security_score": 85,
  "vulnerabilities": [
    {
      "severity": "critical",
      "type": "reentrancy",
      "line": 67,
      "function": "withdraw",
      "description": "Potential reentrancy vulnerability in withdraw function",
      "impact": "High - Could lead to fund drainage",
      "recommendation": "Implement ReentrancyGuard or use checks-effects-interactions pattern",
      "code_snippet": "function withdraw() public { ... }"
    }
  ],
  "gas_analysis": {
    "total_gas": 180000,
    "optimization_opportunities": 5,
    "estimated_savings": "30%",
    "recommendations": [
      "Use unchecked blocks for arithmetic operations",
      "Optimize storage layout",
      "Combine multiple external calls"
    ]
  },
  "compliance": {
    "erc20_compliant": true,
    "best_practices_score": 78,
    "documentation_score": 65
  }
}

Advanced Features

Symbolic Execution

• Path Analysis - Analyzes all possible execution paths
• State Exploration - Explores different contract states
• Vulnerability Discovery - Discovers complex vulnerability patterns

Machine Learning Integration

• Pattern Recognition - ML-powered vulnerability pattern detection
• Risk Assessment - Automated risk scoring based on historical data
• False Positive Reduction - Advanced filtering to reduce false positives

Custom Rule Engine

# Custom security rule example
rules:
  - name: "Custom Access Control"
    pattern: "function admin.*()"
    check: "has_modifier('onlyOwner')"
    severity: "high"
    message: "Admin functions should have proper access control"

Integration Capabilities

Development Tools

• VS Code Extension - Real-time vulnerability detection
• IDE Plugins - Support for popular development environments
• Pre-commit Hooks - Automated scanning before commits
• API Integration - RESTful API for custom tooling

CI/CD Pipelines

• GitHub Actions - Automated scanning on pull requests
• GitLab CI - GitLab pipeline integration
• Jenkins - Custom Jenkins pipeline support
• Azure DevOps - Azure pipeline integration

Project Impact

This tool has been adopted by:

• DeFi Protocols - Ensuring security before mainnet deployment
• Security Auditors - Supporting manual audit processes
• Development Teams - Integrating security into development workflows
• Educational Institutions - Teaching blockchain security concepts

Future Roadmap

• AI-Powered Analysis - Advanced AI for vulnerability detection
• Formal Verification - Integration with formal verification tools
• Multi-Language Support - Support for other smart contract languages
• Real-time Monitoring - Continuous monitoring of deployed contracts
• Advanced Visualization - Interactive vulnerability visualization tools