lua-obfuscator

A powerful Lua / Luau obfuscator with VM-based protection.

lua-obfuscator is a modern, high-quality obfuscation tool designed for Lua and Luau (especially for Roblox, FiveM, and standalone Lua projects). It features a custom VM (Vmify) to significantly raise reverse engineering difficulty.

Installation

npm install lua-obfuscator
# or
yarn add lua-obfuscator

Usage

import { obfuscate } from 'lua-obfuscator';

const source = `
    local function factorial(n)
        if n <= 1 then return 1 end
        return n * factorial(n - 1)
    end

    print(factorial(10))
`;

const obfuscated = obfuscate(source, "luaU", {
    steps: [
        { name: "InsertJunk" },
        { name: "RenameVariables" },
        { name: "Vmify" },
        { name: "ConstantArray" },
        { name: "GlobalMapping" },
        { name: "StringsToExpressions" },
        { name: "NumbersToExpressions" },
        { name: "EncryptStrings" },
        { name: "EncryptNumbers" },
        { name: "WrapInFunction" },
    ],
    minify: true,
});

console.log(obfuscated);

Features

| Feature | Description | |--------------------------|-------------| | InsertJunk | Inserts meaningless junk statements | | RenameVariables | Renames variables to random strings | | Vmify | Advanced custom VM (bytecode + interpreter) — core strength | | ConstantArray | Wraps constants into a randomized array | | GlobalMapping | Maps globals (print, _G, etc.) to a randomized table | | StringsToExpressions | Converts strings like "abc" into concatenated expressions | | NumbersToExpressions | Converts numbers into complex arithmetic expressions | | EncryptStrings | Encrypts strings using XOR | | EncryptNumbers | Encrypts numbers using XOR | | WrapInFunction | Wraps the entire script in an IIFE |