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arXiv · 2609.16423

No Bit Left Behind: Using Brute-Force Lifting to Achieve Fully Static Binary Recompilation

Tianjiao Huang·Po-An Chen·Nick Baron·Michael Franz
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Abstract

Binary recompilation is a technique for operating directly on executable code. It promises to automate two important tasks: retrofitting security mitigations onto legacy binaries, and migrating binaries across instruction set architectures (ISAs). Yet today, there is no fully automated system that can reliably lift arbitrary binary executables to a compiler intermediate representation (IR) such as LLVM IR, or that can fully statically and reliably translate non-trivial binary executables from one ISA to another. The main underlying problem is that recovering a program's control flow graph (CFG) statically is impossible in general: computed branches can jump to targets that cannot be determined without actually running the program. Existing systems resort to runtime fallback mechanisms, requiring a significant portion of the binary translation machinery to accompany the translated program on the target machine. This article presents a fully static, whole-program binary lifting system requiring no runtime translation support on the target. Rather than attempting to distinguish code from data, we treat every byte offset as a potential branch target and lift the entire binary in a brute-force manner, constructing a superset CFG that conservatively contains all feasible control flows. Statically unresolvable computed branches are thereby reduced to lookups in a dispatch table that points to the corresponding translated control flow path. We have implemented this approach as a prototype binary recompiler from x86-64 binaries to LLVM IR, requiring no code/data heuristics. We validate it with a fully static cross-compilation to AArch64, achieved by reusing existing LLVM backends with no modification.

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Tianjiao Huang, Po-An Chen, Nick Baron, Michael Franz. 2026-09-14. No Bit Left Behind: Using Brute-Force Lifting to Achieve Fully Static Binary Recompilation. https://arxiv.org/abs/2609.16423

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