Luac - Decompile

I once worked on a mod for an indie game (with permission) whose original author lost the source. The game used Lua 5.2 compiled scripts. Using unluac , I recovered 95% of the UI logic. Missing variable names were annoying, but the algorithm was intact. Two hours of cleaning later, we had fully functional source.

Open the .luac file in a hex editor. The first few bytes (the header) typically indicate the version. For example, 0x1B 0x4C 0x75 0x61 is the standard signature, followed by a version byte like 0x51 for Lua 5.1. 2. Choose a Decompiler Tool Different tools excel at different versions of Lua: How to decompile lua files decompile luac

Decompiling isn't magic. You will often run into two major hurdles: I once worked on a mod for an

: https://github.com/viruscamp/luadec Language : C / Lua Supported versions : Lua 5.1, 5.2, 5.3 (partial) Missing variable names were annoying, but the algorithm

However, for Lua 5.1–5.4, unluac remains the gold standard for the foreseeable future.