Dynasty Legends 2 © HK TAIHE INTERACTIVE LIMITED.
Script
Dynasty Legends 2 Lua Decryptor
Turns Dynasty Legends 2's encrypted Lua files back into readable source.
Overview
Dynasty Legends 2 stores its Lua source in encrypted .lua files. The names and directory layout are left alone, but the contents use a modified form of XXTEA that regular implementations cannot decode.
This script applies the recovered key and the round count used by the game. It accepts one script or the full game folder. A directory run recreates the same folder tree under the chosen output path.
Prerequisites
Required: Python 3.10 or later. The standard library covers everything used here.
Usage
To decrypt every Lua file below the game directory, pass the installation path followed by a separate output folder:
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python .\dynasty_legends_2_lua_decrypt.py "D:\Steam\steamapps\common\Dynasty Legends 2" ".\decrypted-lua"
A single file works the same way:
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python .\dynasty_legends_2_lua_decrypt.py ".\Boss_LvBu.lua" ".\Boss_LvBu.decrypted.lua"
The output must be separate from the input. This keeps the encrypted originals in place and avoids picking up newly written files during a directory run.
Compatibility
The script was checked against all 11,328 Lua files from the Steam release of Dynasty Legends 2 version 1.39.600. Every result matched the output from the game’s own DecoderBytes function and decoded as UTF-8 Lua source.
The decrypted files were also passed back through the matching encryption function. All 11,328 rebuilt files matched their originals byte for byte.