juggalojohn Posted January 25, 2015 Posted January 25, 2015 I'm currently working on a patch for Grisaia for psp and I ran into .pak files. My usual tricks are not working. Any help Quote
ILOVEPIE Posted January 25, 2015 Posted January 25, 2015 pak files are a standard format that has existed since they were first developed to store content for Quake, you should be able to open them with GCFScape from here: http://nemesis.thewavelength.net/index.php?p=25 Quote
juggalojohn Posted January 25, 2015 Author Posted January 25, 2015 i get this error when I use that tool Quote
ApolloFortyNine Posted January 25, 2015 Posted January 25, 2015 Are your paks fiddled with at all from the dump? Quote
Kelebek1 Posted January 25, 2015 Posted January 25, 2015 http://gbatemp.net/threads/grisaia-no-kajitsu-la-fruit-de-la-grisaia.379721/ This was posted today. I don't know if it's you, but if not he might know? EDIT: They're PGD files. Get https://sites.google.com/site/theleecherman/psnpkgdecryptor-extractor Rename the .PAK files to .PGD, and drag and drop them onto that program. It'll decrypt them for you. The archive format then just seems to be file count, total file length, then 2 dwords for each file, position and length. A couple of the archives are then followed by what looks like a list of filenames for each file. So extracting the files is easy, but repacking maybe not so. It all depends on if the game requires the archives top be in that PGD format and doesn't dynamically check, in which case you'll need some EBOOT hacking to add the checking (or just decrypt all .pak files and then skip the decryption, but patch-wise you'll basically have to distribute the full game if you did that). Quote
KuroHime Posted January 28, 2015 Posted January 28, 2015 I also got problem with *.PAK file of PSP game K Gakuen - Wonderful days - . I wanna extract the sprites from this game, I guessed they're in DATA.PAK file. But when I extracted the iso file by UMDGEN, there're 2 DATA.PAK files, one in INSDIR folder, one in USRDIR folder. I tried extract both of them by GCFScape, it got error like this Reveal hidden contents When I changed their extension from PAK --> PGD & open them by PSNPKGDecryptor&Extractor, still no luck, it said that the file is invalid. Any help Quote
Vigram Posted February 1, 2015 Posted February 1, 2015 Use CriPakTools or QuickBMS for extraction and Cri Packed File Maker to repack the files Quote
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