Ahora mismo estoy probando cripaktools (CriPakGUI), por ver si comprime los cpk de cryware.
https://github.com/wmltogether/CriPakToolsEl que no comprime y he usado para pruebas es YACpkTool.
Me ha servido para ver gráficos.
En un hilo al buscar sobre esto decían:
I recommend you CriFsV2Lib for unpacking and CRI File System Tool for repacking, which are the ones I now use and I have successfully been making some tweaks with them.
For CriFSV2Lib, you just need to drag the .cpk to its windows, sellect all of it content to extract (don't extract just the one thing you want because, when repacking, you will need all of the .cpk files.
For CRI File System Tool fist, you need to open the CpkFileBuilder.exe, drag the extracted .cpk files (preferably after tweking something to know it works) to "Root", which is located below "Files". Once you've done that, just click "Build CPK" at the upper left corner, select the path where you want the resultant cpk, and then click "Clean Build".
De momento no he probado seguir esos pasos.