UnityCN-Helper

A tool helps decrypt/encrypt assetbundle files for UnityCN.

Command Line Arguments

• -i, --infile Required. Input file to be processed.

• -o, --outfile Required. Output processed file.

• -e, --encrypt (Default: false) Encrypt the asset file.

• -d, --decrypt (Default: false) Decrypt the asset file.

• -k, --key Required. UnityCN key for decryption.

• -f, --folder (Default: false) Operate on a folder instead of a file.

• --help Display this help screen.

• --version Display version information.

Example

./UnityCN-Helper -i test.bundle -o test.bundle.de -k 5265736F6E616E63655265626F726E52 -d
./UnityCN-Helper -i test.bundle.de -o test.bundle -k 5265736F6E616E63655265626F726E52 -e

for operating on a folder:

./UnityCN-Helper -i test -o output -k 5265736F6E616E63655265626F726E52 -d -f
./UnityCN-Helper -i output -o output_en -k 5265736F6E616E63655265626F726E52 -e -f

You need to know

In fact, after modifying the asset file, encrypting is not necessary.

For games I encountered, the game can load unencrypted asset files as well as encrypted asset files.

Special Thanks

• Perfare for creating and maintaining and every contributor of AssetStudio

• Razmoth for figuring out and sharing Unity CN's AssetBundle decryption (src).