Emmanuel Isaac
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Secure Audit Tool

Secure Audit Tool

A comprehensive vulnerability scanner specifically designed for Solidity smart contracts. This tool performs automated security audits, identifies common vulnerabilities, and provides detailed reports with remediation recommendations.

Features

  • Static Analysis - Automated code review for common Solidity vulnerabilities
  • Vulnerability Detection - Identifies reentrancy, overflow, access control issues
  • Gas Optimization - Analyzes gas usage and suggests optimizations
  • Best Practices - Checks compliance with Solidity best practices
  • Detailed Reporting - Generates comprehensive audit reports
  • Integration - CI/CD pipeline integration for automated scanning
  • Custom Rules - Support for custom security rules and patterns
  • Multi-Contract Analysis - Analyzes entire contract ecosystems

Detected Vulnerabilities

Critical Issues

  • Reentrancy Attacks - Detects potential reentrancy vulnerabilities
  • Integer Overflow/Underflow - Identifies arithmetic operation risks
  • Access Control - Checks for proper access control mechanisms
  • Unchecked External Calls - Flags dangerous external interactions

High Priority Issues

  • Gas Optimization - Identifies inefficient gas usage patterns
  • Storage Optimization - Suggests storage layout improvements
  • Function Visibility - Checks for proper function visibility settings
  • Event Emission - Validates proper event emission for transparency

Medium Priority Issues

  • Code Quality - Identifies code smells and anti-patterns
  • Documentation - Checks for proper NatSpec documentation
  • Naming Conventions - Validates Solidity naming standards
  • Import Organization - Suggests better import structuring

Tech Stack

  • Language: Python 3.8+
  • Analysis Engine: Custom Solidity parser and analyzer
  • Vulnerability Database: Curated database of known vulnerabilities
  • Reporting: HTML, JSON, and Markdown report formats
  • Integration: GitHub Actions, GitLab CI, Jenkins support

Installation

  1. Clone the repository:

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

  2. Install dependencies:

    pip install -r requirements.txt

  3. Run the scanner:

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

Usage Examples

Basic Scan

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

Comprehensive Analysis

python audit_tool.py \
  --contract contracts/ \
  --output report.html \
  --severity critical,high \
  --include-gas-analysis

CI/CD Integration

# GitHub Actions example
- name: Security Audit
  run: |
    python audit_tool.py --contract contracts/ --output audit-report.json
    python audit_tool.py --validate-report audit-report.json --max-critical 0

Sample Report Output

{
  "contract": "Token.sol",
  "scan_date": "2024-03-10T10:30:00Z",
  "vulnerabilities": [
    {
      "severity": "critical",
      "type": "reentrancy",
      "line": 45,
      "description": "Potential reentrancy vulnerability in withdraw function",
      "recommendation": "Use ReentrancyGuard or checks-effects-interactions pattern"
    },
    {
      "severity": "high",
      "type": "access_control",
      "line": 23,
      "description": "Missing access control on admin function",
      "recommendation": "Add onlyOwner modifier or proper access control"
    }
  ],
  "gas_analysis": {
    "total_gas": 150000,
    "optimization_opportunities": 3,
    "estimated_savings": "25%"
  }
}

Security Rules Engine

The tool includes a comprehensive rules engine that checks for:

Solidity-Specific Issues

  • Reentrancy Patterns - Detects common reentrancy attack vectors
  • Access Control - Validates proper access control mechanisms
  • State Management - Checks for proper state variable handling
  • External Interactions - Analyzes external contract calls

Gas Optimization

  • Storage Layout - Optimizes storage variable arrangement
  • Function Optimization - Suggests gas-efficient function patterns
  • Loop Optimization - Identifies inefficient loop patterns
  • Memory Usage - Optimizes memory allocation and usage

Integration Capabilities

CI/CD Pipelines

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

Development Tools

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

Project Impact

This tool has been used by:

  • DeFi Protocols - Auditing smart contracts before deployment
  • Security Firms - Supporting manual audit processes
  • Developers - Learning and improving smart contract security
  • Educational Institutions - Teaching blockchain security concepts

Future Enhancements

  • Machine Learning - AI-powered 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 Reporting - Interactive vulnerability reports with remediation guides