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Graf Chokolo Releases PS3 SELF Decrypter PSGroove Payload


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196w ago - Today Logic-Sunrise.com (linked above) reports that shinhalsafar is developing on a Dolphin-PS3 (GameCube/Wii) WIP Emulator for PS3 JailBreak users.

To quote, roughly translated: "shinhalsafar the original developer of porting fceu (NES emulator) and VBA (Game Boy emulator, Game Boy Color and Game Boy Advance) continues its momentum in the Ports of Nintendo emulators for our greatest pleasure.

In fact he has just created a google code page on his new project, porting dolphin emulator on PS3 and Wii GameCube.

You can follow progress on the project [Register or Login to view links].

Of course there will be compelling information, we will not fail you connect."






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DeViL303's Avatar
#3 - DeViL303 - 196w ago
Damn, lol had similar article nearly written up, then just went looking for a link and seen this, nice one preceptor, you beat me to it!

PS3 News's Avatar
#2 - PS3 News - 196w ago
Thanks for the news Preceptor and +Rep!

Preceptor's Avatar
#1 - Preceptor - 196w ago
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. First i extract the decrypted segments from pcap dump and load them at right addresses into IDA. I created a shell script to make segment extraction from pcap dumps easier. Virtual addresses of decrypted segments you will find in ELF header.

The target group of this release are again advanced programers among you. The goal of this release is not to give you a tool for SELF decryption but to show you how it can be done So, feel free to ask me any questions about my code. I will support everyone who wants to port my code and create more user-friendly GameOS applications for SELF decryption because i do not intend to write any GameOS tools I’m more interested in HV reversing.

My SELF decrypter is not able to decrypt games and NPDRMs yet but i’m working on it I think you will have enough SELFs now to reverse

I will document my findings about SELF decryption on my HV page in the next days.


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