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  1. #1
    Join Date
    Apr 2008
    Posts
    145

    Graf Chokolo Releases PS3 SELF Decrypter PSGroove Payload

    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.


    More PlayStation 3 News...

  2. #2
    Join Date
    Apr 2005
    Posts
    24,361
    Thanks for the news Preceptor and +Rep!

  3. #3
    Join Date
    Apr 2007
    Posts
    346
    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!

  4. #4
    Join Date
    Apr 2010
    Posts
    411
    very nice, I can't wait untill it can do games then hopefully I can play my 3.50 games.

  5. #5
    Join Date
    Aug 2010
    Posts
    203
    Yeah, Graf Chokolo is running the show right now, keep up the great work!

  6. #6
    Join Date
    Jul 2008
    Posts
    1,633
    German Quality product

    That's one of the interesting things the last days have come out. It's highly possible that this could leak in some intersting modds.

  7. #7
    Join Date
    Sep 2010
    Posts
    3
    graf_chokolo says: Guys, EBOOT.BINs are SELFs

    Looks like he can decrypt more than Just selfs!!!!

  8. #8
    Join Date
    Jul 2008
    Posts
    1,633
    Thats the problem. Self´s and EBOOT´s are the same. Just renamed from .self to .bin.

  9. #9
    Join Date
    Apr 2005
    Posts
    24,361
    More graf_chokolo updates: http://xorloser.com/?p=297&cpage=11#comment-1986

    [Register or Login to view code]

    I don’t know if you know it or not but you can set RTOC in IDA and IDA calculates all the references automatically for you

  • #10
    Join Date
    Feb 2008
    Posts
    273

    Graf Chocolo Can Now Decrypt PS3 EBOOT.BIN Files

    Reading xorloser's blog tonight this has just appeared: http://xorloser.com/?p=297&cpage=13#comment-2069
    graf_chokolo says:

    Guys, i’m able now to decrypt games, EBOOT.bins I will make my findings public very soon

    Here is a snippet of a game i decrypted:

    http://pastie.org/1347337

    Guys, how can i install NP-DRMs on my PS3, i have no clue
    This weekend is just sooo good Congratulations Dude

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