But what I noticed it doesn't allow to repack the stuff into a pcc file, so maybe you can enlighten me on that.
I'm thinking about "repacking" as about impossible (or at least extremely complex) task.
I am looking for dokumentation about this.
There is no documentation, all knowledge were obtained by myself without any help from other information sources.
Are these package files custom to every game or is there any standart or so(headers, descriptors etc.)?
Most (30-50%) games has "standard" data formats (formats exactly as in Unreal engine provided by Epic Games). Some game titles has hard modifications to data structures (Bioshock, Batman 2 etc). Other games uses variations of standard structures - they have minor changes to data formats.
How did you managed to read and extract stuff in the first place?
?
Did you disassembled the loader of it in the ME3.exe? I guess not.
I've disassembled necessary parts of ME3 game executable.
I guess DLCs are just copy and paste installers?
DLC is a complex system, it could have
patches to the scripts and data files (most complexity came from the console restrictions).