A batch decryption program for the files of a game on Steam that has the app ID: 2378900
It will process all encrypted .png, .json, and .ogg files in the directory and save them to a new folder. It will not attempt to decrypt any files that are not encrypted.
You must provide your own copy of the game.
Place the program in the main directory that contains game.exe and run it from the command line. By default, the program will only check the audio, data, and img folders in the www/ directory. The filenames of all encrypted files must be unchanged.
Arguments:
inputDirectory: Specify the input directory or file. If directory, it will traverse all folders in the directory recursively.
outputDirectory: Specify the output directory. You must pass both arguments at once.
Example:
ielmendecryptor.exe inputDirectory outputDirectory
Two versions are provided: rust and c#. To build the rust version, run cargo build --release in the corresponding directory. For the c#, version, use the included solution file.
Decrypting the game assets by using the built-in JavaScript decryption functions will leave personally identifying info inside of any files that you decrypt.
The decrypted file data from this program is completely clean. You can verify this by using a hex editor.
