Hello, I'm trying to get the text files from the Chinese Unity game One Piece Fighting Path. However, they seem to be encrypted. The first Google Drive link is the apk https://drive.google.com/file/d/1HW-qdJRjyLdjs62yc3NxnmtgkXWbatNW/view?usp=sharing, and the second is the "bundledtext" folder https://drive.google.com/file/d/1QNR33MgYcwfnpJYml06bPpWAmj8PVRpV/view?usp=sharing.

install python packages using pip install UnityPy lz4 numpy pycryptodome protobuf

then run the attached .py file next to the bundletext folder python opfp_extract.py bundletext extracted

How the files are protected:

Bundles: each .asset is a Unity bundle with junk bytes in front. The game uses a modified Unity engine that scrambles every compressed block. The key is just the length of the file name (13 for quality.asset, for example).
Text files: each one inside a bundle is XORed with the 4 bytes 5E A5 4B E7. That's a hash of the string "MKONEPIECE".
AES files: files starting with HGAMEENCRYPT use AES-256 with a key I pulled from the game code. That's assets_info.json in the APK.
Lua and config tables: these are compiled LuaJIT, but with the instruction numbering shuffled so regular decompilers fail. I recovered the full mapping from the game's Lua engine.

opfp_extract.py