CriPakTools.exe -i game.cpk -x
If you must repack, allows you to create a "patch" CPK containing only the changed files, which overrides the original data. cripaktools
CriPakTools fills a specific gap for researchers dealing with legacy Cisco protocols or custom-packed data streams. However, its power comes with significant responsibility. where to get it
cripak_tools --unpack capture.bin --format cisco-config and how to use it safely.
Here is a good guide on what it is, where to get it, and how to use it safely.