Uncharted 4 (PS4) - APP.PKG

Extraction and unpacking of game archives and compression, encryption, obfuscation, decoding of unknown files
Mygoshi
Posts: 654
Joined: Mon Oct 27, 2014 1:49 pm

Uncharted 4 (PS4) - APP.PKG

Post by Mygoshi »

Hello,

I'm interested in extracting the game data.

Samples: (expired)

Thanks!
Last edited by Mygoshi on Wed Feb 17, 2021 10:08 pm, edited 2 times in total.
Mygoshi
Posts: 654
Joined: Mon Oct 27, 2014 1:49 pm

Re: Uncharted 4 (PS4) - APP.PKG

Post by Mygoshi »

Please?
Last edited by Mygoshi on Wed Feb 17, 2021 10:08 pm, edited 2 times in total.
aluigi
Site Admin
Posts: 12984
Joined: Wed Jul 30, 2014 9:32 pm

Re: Uncharted 4 (PS4) - APP.PKG

Post by aluigi »

It's a PKG CNT format in use on Playstation and I think it's a sort of Sony native format (custom ISO) and not a format of the developers.
Exist no solutions, some weeks ago I made a script able to extract the only refrenced and non-encrypted data:
http://aluigi.org/bms/pkg_cnt.bms
Mygoshi
Posts: 654
Joined: Mon Oct 27, 2014 1:49 pm

Re: Uncharted 4 (PS4) - APP.PKG

Post by Mygoshi »

I see, so you mean it's not possible to extract the content like music since it's encrypted?
Last edited by Mygoshi on Wed Feb 17, 2021 10:09 pm, edited 2 times in total.
aluigi
Site Admin
Posts: 12984
Joined: Wed Jul 30, 2014 9:32 pm

Re: Uncharted 4 (PS4) - APP.PKG

Post by aluigi »

The sample is not big enough to see after 0x14b4244, but yes it's for sure encrypted
Mygoshi
Posts: 654
Joined: Mon Oct 27, 2014 1:49 pm

Re: Uncharted 4 (PS4) - APP.PKG

Post by Mygoshi »

Could other files be of use? To help decrypt them?
Last edited by Mygoshi on Wed Feb 17, 2021 10:10 pm, edited 2 times in total.
aluigi
Site Admin
Posts: 12984
Joined: Wed Jul 30, 2014 9:32 pm

Re: Uncharted 4 (PS4) - APP.PKG

Post by aluigi »

Uhmmm no.
chrrox
Posts: 388
Joined: Thu Aug 07, 2014 10:28 pm

Re: Uncharted 4 (PS4) - APP.PKG

Post by chrrox »

all ps4 pkg's are encrypted for game files nothing can be done without ps4 boot loader hack to dump the encryption keys.
Ekey
Posts: 1383
Joined: Sat Aug 09, 2014 2:34 pm

Re: Uncharted 4 (PS4) - APP.PKG

Post by Ekey »

Wiki about PS4 pkg's