DeFiGuard

Problem Statement

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 patternsAI-powered vulnerability assessment using GPT-4o for contextual security analysisCross-chain security evaluation focusing on timelock configurations, safety deposits, and atomic swap risksComprehensive gas efficiency analysis and optimization recommendationsProfessional web interface with real-time contract analysis and detailed security reportingDeFiGuard helps developers, auditors, and protocol teams ensure their 1inch integrations are secure and properly implemented, making DeFi safer through specialized security analysis.

Solution

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 concernsAI Engine: OpenAI GPT-4o API for advanced security analysis with custom prompts designed for DeFi and cross-chain patternsBlockchain Integration: Etherscan API for real-time contract source code retrieval and verificationFrontend: Bootstrap with custom dark theme, responsive design, and real-time analysis interfaceCustom 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 mechanismsConfidence scoring algorithm that weighs different detection methodsNotable Technical Implementations:Multi-file contract parsing: Handles complex Solidity projects with multiple inheritance and importsAI prompt engineering: Custom system prompts specifically designed to detect cross-chain risks and 1inch integration patternsFallback mock data system: Ensures demo functionality when API quotas are exceededModular architecture: Each service (Etherscan, OpenAI, 1inch detection) is independently testable and maintainableHackathon-Specific Features:Fusion+ Analysis: Deep inspection of atomic swap implementations, timelock security, and resolver authorizationCross-chain Risk Assessment: Specialized evaluation of bridge security, finality confirmation, and MEV protection1inch Integration Validation: Comprehensive checking of slippage protection, reentrancy guards, and proper function usageThe application successfully demonstrates real-world utility by analyzing actual 1inch contracts and providing actionable security insights for the growing cross-chain DeFi ecosystem.