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Thread: GeoHot Releases PS3 Hack, Exploit Your System and Enjoy!

  1. #1
    Warrorar Guest

    GeoHot Releases PS3 Hack, Exploit Your System and Enjoy!

    As a BIG follow-up to his Sample PS3 Linux Isolated SPU Loader Code, GeoHot has now released his coveted PS3 hack so end-users can exploit their non-Slim PlayStation 3 Entertainment System!

    Essentially what it does is modify the PS3's hypervisor adding two calls for reading/writing to all of the system memory.

    To quote: "In the interest of openness, I've decided to release the exploit. Hopefully, this will ignite the PS3 scene, and you will organize and figure out how to use this to do practical things, like the iPhone when jailbreaks were first released. I have a life to get back to and can't keep working on this all day and night.

    Please document your findings on the psDevWiki. They have been a great resource so far, and with the power this exploit gives, opens tons of new stuff to document. I'd like to see the missing HV calls filled in, nice memory maps, the boot chain better documented, and progress on a 3D GPU driver. And of course, the search for a software exploit.

    This is the coveted PS3 exploit, gives full memory access and therefore ring 0 access from OtherOS. Enjoy your hypervisor dumps. This is known to work with version 2.4.2 only, but I imagine it works on all current versions. Maybe later I'll write up how it works :)

    I've gotten confirmation the exploit works on 3.10. Also I've heard about compile issues on Fedora. I did this in Ubuntu.

    Good luck!"

    Usage Instructions:

    Compile and run the kernel module.

    When the "PRESS THE BUTTON IN THE MIDDLE OF THIS" comes on, pulse the line circled in the picture low for ~40ns.
    Try this multiple times, I rigged an FPGA button to send the pulse.
    Sometimes it kernel panics, sometimes it lv1 panics, but sometimes you get the exploit!!
    If the module exits, you are now exploited.

    This adds two new HV calls,
    u64 lv1_peek(16)(u64 address)
    void lv1_poke(20)(u64 address, u64 data)
    which allow any access to real memory.

    The PS3 is hacked, its your job to figure out something useful to do with it.

    How it works:

    geohot: well actually it's pretty simple
    geohot: i allocate a piece of memory
    geohot: using map_htab and write_htab, you can figure out the real address of the memory
    geohot: which is a big win, and something the hv shouldn't allow
    geohot: i fill the htab with tons of entries pointing to that piece of memory
    geohot: and since i allocated it, i can map it read/write
    geohot: then, i deallocate the memory
    geohot: all those entries are set to invalid
    geohot: well while it's setting entries invalid, i glitch the memory control bus
    geohot: the cache writeback misses the memory :)
    geohot: and i have entries allowing r/w to a piece of memory the hypervisor thinks is deallocated
    geohot: then i create a virtual segment with the htab overlapping that piece of memory i have
    geohot: write an entry into the virtual segment htab allowing r/w to the main segment htab
    geohot: switch to virtual segment
    geohot: write to main segment htab a r/w mapping of itself
    geohot: switch back
    geohot: PWNED
    geohot: and would work if memory were encrypted or had ECC
    geohot: the way i actually glitch the memory bus is really funny
    geohot: i have a button on my FPGA board
    geohot: that pulses low for 40ns
    geohot: i set up the htab with the tons of entries
    geohot: and spam press the button
    geohot: right after i send the deallocate call

    On the Isolated SPUs

    Today I verified my theories about running the isolated SPUs as crypto engines. I believe that defeats the last technical argument against the PS3 being hacked.

    In OtherOS, all 7 SPUs are idle. You can command an SPU (which I'll leave as an exercise to the reader) to load metldr, from that load the loader of your choice, and from that decrypt what you choose, everything from pkgs to selfs. Including those from future versions.

    The PPU is higher on the control chain then the SPUs. Even if checks were to be added to, for example, verify the hypervisor before decrypting the kernel, with clever memory mappings you can hide your modified hypervisor.

    Ah, but you still didn't get the Cell root key. And I/we never will. But it doesn't matter. For example, we don't have either the iPhone or PSP "root key". But I don't think anyone doubts the hackedness of those systems.

    I wonder if any systems out there are actually secure?

    [imglink=|GeoHot Releases PS3 Hack, Exploit Your System and Enjoy!][/imglink]
    More PlayStation 3 News...

  2. #2
    brent0r Guest
    lets hope the devs can put time into making something great out of this. I have no doubts they won't. all the best! best news of the year

  3. #3
    exzile2 Guest

    This is a mistake.. He should have let the devs look at it first!

  4. #4
    SCE Guest
    Boss, could you please merge or close the other topics so that we can focus on one topic and I don't have to go through all other topics when I woke up tomorrow

  5. #5
    Bakke Guest
    Question: This exploit will be tapped on the next PS3 fw update, right?

  6. #6
    delmando Guest
    Really... you are great mr. Geohot!

  7. #7
    Alucard Guest


    Quote Originally Posted by Bakke View Post
    Question: This exploit will be tapped on the next PS3 fw update, right?
    Most likely, it will, now that it is on the open sony can patch things up!! so for now don't update your system!!

  8. #8
    xxkrizxx Guest
    Nope, geohot said it will be hard for sony to patch it so don't think so..

    well guess more waitin for me now, cmon devs now its up to you guys to use this hack just so i know what exactly can be done with this ?? homebrew?

  9. #9
    ZimZi Guest

    Big Grin

    This is great news!!! i'll hope this leads to something awsome!!!

  10. #10
    Kiriller Guest


    Let the games begin!

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