I've stumbled upon this forum when looking for a way to extract the game assets of the Mobile Game Tales of Link.
The image files all seem to be in .pck files and opening them in HxD this for example:

I've tried to fiddle around with it for a while but to no avail so i decided to ask for help on the matter. All of the .pck files in the folder i tried start with 01 00 00 00
Another issue are the sound files which are in .acb and .awb
I've tried some programs and scripts provided elsewhere but all of them say the decryption is not supported.

This is an example of the top part of one of the .acb files, they all start with 40 55 54 46
Also here an example of a .awb file (which seem to be used for BGM

again, all files checked start with 41 46 53 32
This is my first time trying to decompile App assets so i hope someone can guide me in the right direction.
I'll attach a few example files and hope someone can help me, i would really appreciate it.