Anubis Lua Decompiler (VS Code extension)

A VS Code extension that automatically decompiles Lua into readable source when you open a .luac file. It supports both:

MTA:SA signed .luac files (RSA-obfuscated headers + encrypted bytecode) — the Anubis format.
Raw Lua 5.1 bytecode files.

Features

Automatic decompilation — open (or focus) a .luac file and the decompiled Lua source is shown automatically in a read-only preview editor beside it.
OpenRouter rewrite preview — if you add an OpenRouter API key, the extension shows a second split-screen preview with renamed functions, locals, and tables inferred from context.
Virtual read-only preview — results are shown without polluting your workspace (scheme anubis-decompiled://).
Decompile to .lua — write the result as a real file next to the source.
Decompile a folder — batch decompile every .luac in an explorer folder.
Caching — repeated opens are instant.
Commands and context menus in the editor title bar and explorer.

Requirements

Python 3 on PATH (or set anubisDecompiler.pythonPath)
Java on PATH (or set anubisDecompiler.javaPath) — to run unluac. unluac.jar is bundled in resources/.

Usage

Open a .luac file, or click any .luac in the Explorer/Editor.
The decompiled source opens in a preview editor.
Use the editor title/explorer right-click menu, or the Command Palette (Ctrl+Shift+P), for:
- Anubis: Decompile Current File
- Anubis: Re-decompile Current File
- Anubis: Decompile to .lua File
- Anubis: Decompile Folder...
- Anubis: Clear Decompile Cache

Settings

Setting	Default	Description
`anubisDecompiler.pythonPath`	`python`	Python interpreter for decryption/deobfuscation
`anubisDecompiler.javaPath`	`java`	Java executable used to run unluac
`anubisDecompiler.autoDecompile`	`true`	Auto-decompile when a `.luac` is opened
`anubisDecompiler.showPreview`	`true`	Show result in a preview editor
`anubisDecompiler.pythonTimeout`	`60000`	Per-file decompile timeout (ms)
`anubisDecompiler.openrouterApiKey`	empty	OpenRouter API key used to rewrite and rename decompiled Lua
`anubisDecompiler.openrouterModel`	`meta-llama/llama-3.1-8b-instruct:free`	OpenRouter model used for the rewrite pass
`anubisDecompiler.openrouterBaseUrl`	`https://openrouter.ai/api/v1`	Base URL for the OpenRouter API
`anubisDecompiler.openrouterTimeout`	`120000`	Timeout for the OpenRouter rewrite step (ms)

Development

npm install
npm run compile   # build to out/

Press F5 to launch an Extension Development Host.

Architecture

resources/
  decompiler/
    decompile.py   # decryption + deobfuscation + unluac orchestration
    script.py      # MTA:SA signed .luac parser / RSA decryptor
    luaHelper.py   # Lua 5.1 bytecode deobfuscator (level-3 decryption)
    sha1.py        # SHA-1 helper
  unluac.jar       # decompiler backend
src/
  extension.ts     # activation, auto-decompile, virtual previews, commands
  decompiler.ts    # spawns the Python decompile pipeline

Anubis Lua Decompiler

SeniorA

Anubis Lua Decompiler (VS Code extension)

Features

Requirements

Usage

Settings

Development

Architecture