V8 Bytecode Decompiler [2021]

A basic disassembler designed for specific versions of V8 to help understand bytecode. Key Concepts for Decompilation

The V8 JavaScript engine, used in Chrome and Node.js, compiles JavaScript to bytecode executed by its Ignition interpreter. While bytecode is an intermediate representation, recovering high-level JavaScript semantics from it is nontrivial due to implicit type handling, control flow compression, and optimization metadata. This paper presents the design and implementation of a static decompiler for V8’s bytecode (version 9.0+). We analyze the bytecode structure, map instructions to abstract syntax tree nodes, reconstruct control flow, and handle edge cases like exception handlers and closure captures. Evaluation on real-world JavaScript snippets shows correct decompilation for 85% of tested functions, with remaining challenges due to hidden class transitions and deoptimization points. We discuss applications in malware analysis, legacy code recovery, and debugging. v8 bytecode decompiler

Quality checklist for choosing a V8 bytecode decompiler A basic disassembler designed for specific versions of

return sourceCode;

参考与致谢. View8：. suleram/View8 （已在本仓库中集成修改）. 博客与资料参考：. https://guage.cool/wiz-license.html · https://rce.moe/2025/01/07/v8-bytecode- Exploring Compiled V8 JavaScript Usage in Malware This paper presents the design and implementation of

Elias nodded. "The standard tools are giving me junk. They can show me the opcodes, but I can't see the intent. I don't need a disassembler. I need a decompiler."