Advertising (This ad goes away for registered users. You can Login or Register)

Search found 6 matches

by chapix
Mon Jan 17, 2011 11:54 pm
Forum: Programming and Security
Topic: PS3 packages and how it leads to PSP signing
Replies: 318
Views: 161852

Re: PS3 packages and how it leads to PSP signing

UPDATE.7z - 5.37MB is signed Eboot with updater keys.
by chapix
Sun Jan 16, 2011 4:50 pm
Forum: Programming and Security
Topic: PS3 packages and how it leads to PSP signing
Replies: 318
Views: 161852

Re: PS3 packages and how it leads to PSP signing

i don't know how Kgsws generate these 0x7 bytes.
by chapix
Sun Jan 16, 2011 4:02 pm
Forum: Programming and Security
Topic: PS3 packages and how it leads to PSP signing
Replies: 318
Views: 161852

Re: PS3 packages and how it leads to PSP signing

According KGSWS is Hash of Header.
by chapix
Sun Jan 16, 2011 3:29 pm
Forum: Programming and Security
Topic: PS3 packages and how it leads to PSP signing
Replies: 318
Views: 161852

Re: PS3 packages and how it leads to PSP signing

After a bit more searching i found that my block differs from original one of 0xF bytes, is that normal ?
The last 0xf bytes is CMACHASH.
by chapix
Sun Jan 16, 2011 2:32 pm
Forum: Programming and Security
Topic: PS3 packages and how it leads to PSP signing
Replies: 318
Views: 161852

Re: PS3 packages and how it leads to PSP signing

It is easy to craft last 16 bytes of encrypted data block to match header CMAC - yes, that's the trick :) How did you generate the last 16 bytes? http://www.mediafire.com/?bxytl2pb8e0uys3 is modified prxdecrypt (jas0nuk) in order to get Encrypt AES_game and Encrypt CMAC game_key ( game_key:0x00 -0x...
by chapix
Sat Jan 15, 2011 7:57 pm
Forum: Programming and Security
Topic: PS3 packages and how it leads to PSP signing
Replies: 318
Views: 161852

Re: PS3 packages and how it leads to PSP signing

It is properly signed, but it uses precalculated header from existing demo game(s) :) i am a little bit skeptical. First we don't have any keys for demos.And in my investigation, in order to encrypt and sign code we need to : 1)Encrypt aes_game key and cmac key with kirk key ->ok 2)Xor aes_game_enc...

Go to advanced search