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Search found 6 matches

by jgottula
Fri Mar 15, 2019 1:13 am
Forum: Game Archive
Topic: Ace Combat 7 - key to open .pak
Replies: 19
Views: 6137

Re: Ace Combat 7 - key to open .pak

Quick update: I have finally determined the identity of sub_147AB3940 (the function that does the "ACE7" header magic manipulation). It's void operator<<(FStucturedArchive::FSlot Slot, FPackageFileSummary& Sum) from PackageFileSummary.cpp. Presumably with a bunch of stuff inlined, I don't doubt.
by jgottula
Thu Mar 14, 2019 11:37 pm
Forum: Game Archive
Topic: Ace Combat 7 - key to open .pak
Replies: 19
Views: 6137

Re: Ace Combat 7 - key to open .pak

I think I might understand... it seems that the .uasset file is basically the "front part" of the archive, with metadata and stuff, and then the .uexp file is the "back part" of the archive, where the actual bulk data is stored.

Correct me if I'm wrong.
by jgottula
Thu Mar 14, 2019 11:10 pm
Forum: Game Archive
Topic: Ace Combat 7 - key to open .pak
Replies: 19
Views: 6137

Re: Ace Combat 7 - key to open .pak

about the Save File discovery, i would suggest showcase this to FluffyQuack, due he worked at a SoulCalibur VI Save Editor, but said that for decompressing the save file was a little hard by the encryption. with the key already found, it is a possible way to create a Ace Combat 7 Save Editor, which...
by jgottula
Thu Mar 14, 2019 8:04 pm
Forum: Game Archive
Topic: Ace Combat 7 - key to open .pak
Replies: 19
Views: 6137

Re: Ace Combat 7 - key to open .pak

Okay, I did some quick testing in the debugger just now. Every call to FAES::DecryptData during the loading process (from firing up the EXE, through the various loading splash screens, up to the title screen that says to press ENTER) uses the same key parameters, those for the "https://ace7.acecomba...
by jgottula
Thu Mar 14, 2019 7:21 pm
Forum: Game Archive
Topic: Ace Combat 7 - key to open .pak
Replies: 19
Views: 6137

Re: Ace Combat 7 - key to open .pak

Yes, I've also attempted to open the uasset files and found that they were unreadable. My presumption is that either there is a second layer of encryption being used on them (which is a tad silly, but not inconceivable), or that perhaps there's merely a tiny header modification going on. (These uass...
by jgottula
Thu Mar 14, 2019 1:20 am
Forum: Game Archive
Topic: Ace Combat 7 - key to open .pak
Replies: 19
Views: 6137

Re: Ace Combat 7 - key to open .pak

I went to the trouble to reverse engineer this today with a disassembler and debugger. Long answer (useful generic information about keys extraction, carefully read second post): http://www.gildor.org/smf/index.php/topic,6134.0.html This information was highly useful in helping me quickly track down...