Smart Contract Vulnerability Scanner

An advanced smart contract vulnerability scanner that combines static analysis, dynamic testing, and machine learning to identify security vulnerabilities in blockchain smart contracts. This tool provides comprehensive security analysis for Solidity, Vyper, and other smart contract languages.

Features

Multi-Language Support - Solidity, Vyper, and other smart contract languages
Static Analysis - Advanced static code analysis for vulnerability detection
Dynamic Testing - Runtime testing and fuzzing capabilities
Machine Learning - ML-powered vulnerability pattern recognition
Gas Analysis - Comprehensive gas usage analysis and optimization
Compliance Checking - Industry standard compliance validation
Integration APIs - RESTful APIs for CI/CD integration
Custom Rules - Support for custom security rules and patterns

Vulnerability Detection

Critical Vulnerabilities

Reentrancy Attacks - Advanced reentrancy pattern detection
Integer Overflow/Underflow - Arithmetic vulnerability analysis
Access Control Issues - Permission and access control validation
Unchecked External Calls - Dangerous external interaction detection
Front-Running Vulnerabilities - MEV and front-running risk assessment

High Priority Issues

Storage Optimization - Storage layout and gas optimization analysis
Function Optimization - Gas-efficient function pattern suggestions
Event Emission - Transparency and logging validation
Error Handling - Comprehensive error handling analysis
Upgradeability Issues - Proxy and upgrade pattern validation

Medium Priority Issues

Code Quality - Code smell detection and anti-pattern identification
Documentation - NatSpec documentation compliance checking
Naming Conventions - Smart contract naming standard validation
Import Organization - Import structure and dependency analysis

Tech Stack

Core Engine: Python 3.9+ with custom parsers
Analysis Framework: Advanced static analysis with symbolic execution
Machine Learning: TensorFlow/PyTorch for vulnerability prediction
Blockchain Integration: Web3.py, Ethers.js for contract interaction
Database: PostgreSQL for vulnerability database
API Framework: FastAPI for RESTful APIs

Installation & Setup

Clone the repository:

git clone https://github.com/1cbyc/smart-contract-vulnerability-scanner.git
cd smart-contract-vulnerability-scanner

Install dependencies:
```
pip install -r requirements.txt
```
Set up database:
```
python setup_database.py
```

Configure the scanner:

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

Run the scanner:

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

Usage Examples

Basic Contract Scan

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

Comprehensive Analysis

python scanner.py \
  --contract contracts/ \
  --output detailed-report.html \
  --severity critical,high,medium \
  --include-gas-analysis \
  --include-ml-analysis

CI/CD Integration

# GitHub Actions workflow
- name: Smart Contract Security Scan
  run: |
    python scanner.py --contract contracts/ --output scan-report.json
    python scanner.py --validate-report scan-report.json --max-critical 0

API Usage

import requests

# Scan contract via API
response = requests.post('http://localhost:8000/scan', json={
    'contract': contract_source,
    'language': 'solidity',
    'options': {
        'severity': ['critical', 'high'],
        'include_gas_analysis': True
    }
})

results = response.json()

Machine Learning Features

Vulnerability Prediction

Pattern Recognition - ML models trained on known vulnerabilities
Anomaly Detection - Detection of unusual code patterns
Risk Scoring - Automated risk assessment and scoring
False Positive Reduction - ML-based false positive filtering

Training Data

Vulnerability Database - Curated database of known vulnerabilities
Code Corpus - Large dataset of smart contract code
Audit Reports - Professional audit reports for training
Community Contributions - Open source vulnerability contributions

Advanced Analysis

Symbolic Execution

Path Analysis - Analyzes all possible execution paths
State Exploration - Explores different contract states
Vulnerability Discovery - Discovers complex vulnerability patterns
Invariant Detection - Detects contract invariants and properties

Formal Verification

Model Checking - Formal model checking for contract properties
Theorem Proving - Automated theorem proving for security properties
Specification Validation - Validation of formal specifications
Correctness Proofs - Automated correctness proofs

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
GitHub Actions - CI/CD pipeline integration

Blockchain Platforms

Ethereum - Full Ethereum compatibility
Polygon - Polygon network support
BSC - Binance Smart Chain support
Other EVM Chains - Support for other EVM-compatible chains

Reporting and Analytics

Security Reports

Executive Summary - High-level security assessment
Technical Details - Detailed vulnerability information
Risk Assessment - Risk scoring and prioritization
Remediation Guidance - Step-by-step remediation instructions

Analytics Dashboard

Vulnerability Trends - Historical vulnerability analysis
Risk Metrics - Risk assessment and scoring metrics
Performance Analytics - Scanner performance metrics
Compliance Reports - Compliance and audit reports

Project Impact

This scanner has been used by:

DeFi Protocols - Pre-deployment security assessment
Security Auditors - Supporting professional audit processes
Development Teams - Integrating security into development workflows
Educational Institutions - Teaching smart contract security

Future Enhancements

Quantum Resistance - Post-quantum cryptography analysis
Cross-Chain Support - Multi-chain vulnerability analysis
Advanced ML Models - Enhanced machine learning capabilities
Real-time Monitoring - Continuous monitoring of deployed contracts
Automated Remediation - Automated vulnerability remediation suggestions