- As a follow-up to his previous
work, today graf_chokolo
has done it again and posted his code for decryption of PS3 SELF files using appldr.
Looks like he still can't decrypt game or NPDRMs selfs but soon pehaps.
Download: Graf Chokolo PS3 SELF Decrypter PSGroove Payload
To quote from xorloser
's blog (linked above): Guys, i promised to you to make my SELF decrypter public. I just uploaded it
Let me first explain how it works.
I used only HV calls in my code because i wanted to learn how to decrypt SELFs without GameOS. The decryption and decompression of SELFs is done by isolated module appldr which is prepared and loaded by lv1_undocumented_function_99. After appldr is loaded it sends a message and waits for your instructions to decrypt some encrypted segments. When the message arrives i pass encrypted segment data to appldr through shared memory and it decrypts the passed data. When the decryption is done the payload sends the decrypted data over network to my PC and i capture it with tcpdump
I’m using IDA to analyze the decrypted code....