ATLAS: A Multi-Agent Framework for Lifting Binary to Canonical Compiler IR

Xiaoao Zhu, Ni Zhang, Jie Ren, Zhiqiang Li, Jie Zheng, Zhanyong Tang, Zheng Wang · 2026 · arXiv

DOI: 10.48550/arXiv.2610.30877 · open-access PDF

Abstract

Lifting stripped, heavily optimized binaries to a canonical, pre-optimization LLVM intermediate representation (IR) is essential for downstream security analysis and legacy software migration when source code is unavailable. However, aggressive compiler optimizations rewrite control and data flow, remove structural metadata, and introduce type-erased low-level idioms, causing current lifters to produce malformed or semantically divergent IR. We present ATLAS, a multi-agent framework designed to reconstruct formally valid and canonical LLVM IR from optimized disassembly.ATLAS combines (i) Struc

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