DeFiGuard

DeFiGuard is an AI-powered smart contract security analyzer specifically designed to detect and assess 1inch protocol integrations and cross-chain vulnerabilities. Built for 1inch hackathon Track 1, it addresses the critical gap in security tooling for modern DeFi protocols.

The application specializes in analyzing Fusion+ atomic swaps, HTLC implementations, and cross-chain bridge security risks. It provides real-time detection of 1inch protocol usage across all versions (v2-v6), including aggregator functions, limit order protocols, and Fusion+ escrow mechanisms.

Key features include:

• Advanced 1inch pattern recognition engine that detects contract addresses, function signatures, and integration patterns
• AI-powered vulnerability assessment using GPT-4o for contextual security analysis
• Cross-chain security evaluation focusing on timelock configurations, safety deposits, and atomic swap risks
• Comprehensive gas efficiency analysis and optimization recommendations
• Professional web interface with real-time contract analysis and detailed security reporting

DeFiGuard helps developers, auditors, and protocol teams ensure their 1inch integrations are secure and properly implemented, making DeFi safer through specialized security analysis.

DeFiGuard is built using a modern Flask web architecture with specialized AI and blockchain integrations optimized for 1inch protocol analysis.

Core Technologies:

• Backend: Flask with modular service architecture for clean separation of concerns
• AI Engine: OpenAI GPT-4o API for advanced security analysis with custom prompts designed for DeFi and cross-chain patterns
• Blockchain Integration: Etherscan API for real-time contract source code retrieval and verification
• Frontend: Bootstrap with custom dark theme, responsive design, and real-time analysis interface

Custom Detection Engine: Built a specialized 1inch detection service that analyzes smart contract source code for:

• Known 1inch contract addresses across all versions (v2-v6 routers, limit order protocols, Fusion+)
• Function signature recognition (swap, fillOrder, unoswap, createEscrow)
• Fusion+ specific patterns using regex matching for HTLC implementations, safety deposits, and timelock mechanisms
• Confidence scoring algorithm that weighs different detection methods

Notable Technical Implementations:

• Multi-file contract parsing: Handles complex Solidity projects with multiple inheritance and imports
• AI prompt engineering: Custom system prompts specifically designed to detect cross-chain risks and 1inch integration patterns
• Fallback mock data system: Ensures demo functionality when API quotas are exceeded
• Modular architecture: Each service (Etherscan, OpenAI, 1inch detection) is independently testable and maintainable

Hackathon-Specific Features:

• Fusion+ Analysis: Deep inspection of atomic swap implementations, timelock security, and resolver authorization
• Cross-chain Risk Assessment: Specialized evaluation of bridge security, finality confirmation, and MEV protection
• 1inch Integration Validation: Comprehensive checking of slippage protection, reentrancy guards, and proper function usage

The application successfully demonstrates real-world utility by analyzing actual 1inch contracts and providing actionable security insights for the growing cross-chain DeFi ecosystem.