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PS3 Lv0ldr / Bootldr Exploit Reverse-Engineering Details by Naehrwert


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108w ago - Following up on the previous PS3 Lv0ldr / Bootldr clarifications by marcan42 and wololo, today PlayStation 3 hacker naehrwert has shared some details based on reverse-engineering the exploit used to dump it.

To quote from his blog: The Exploit

As the exploit that was used to dump lv0ldr/bootldr/howeveryouliketocallit is public now, let's have a closer look at it to understand what's going on. Here is what I have reversed from lv0 (it shares the syscon portion of the code with its SPU counterpart):

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The syscon library implements some high level functions, e.g. to shutdown the console on panic or to read certain configuration values. Every of this functions internally uses another function to exchange packets with syscon and the exchange function uses the read_cmpl_msg one to get the answer packet. The top-level function will pass a fixed size buffer to the exchange function.

So if we are able to control syscon packets, e.g. by emulating MMIO (and thanks to IBM we are), we can change the packet size between the two packet readings and overwrite the caller stack. And if we first copy a little stub to shared LS and let the return address point to it, we can easily dump the whole 256 kB.

Nothing more left to say now, let's wait and see if this is going to be fixed in future firmware versions (we just have to check lv0 fortunately).




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Comments 252 Comments - Go to Forum Thread »

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#227 - phuqt - 103w ago
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What are these keys?

#226 - cfwmark - 104w ago
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HO! HO! HO! MARRY CHRISTMAS!

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FILE NAME: ps3key.txt

#225 - yllan - 104w ago
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goodnight, here are some file which could be used for development a check

3.60 CEX - LV1 Embedded Files (Twitter: UpSilon_Y)

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Can you look if it please, thank you: [Register or Login to view links]

source: logic-sunrise.com

#224 - SammyG0080 - 104w ago
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here are actual lv1 lv2 dump from 431/430 if any one wants to browse around...

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#223 - xr3b0rn - 105w ago
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Here is my official topic about the keys because you have missing keys or because the older version has misstypes. i'm using real legit keys fresh from the ps3 dev wiki 100% working on scetool !!! Thanks all readers

MISSING KEYS !!! CANNOT HAVE THE CFW INSTALLABLE ON 4.XX IF THOSE KEYS ARE MISSING!!!

OK here is list: Lv1-priv-431!!! and all spu_pkg_rvk_verifier keys also missing !!! PLZ IF U FOUND OR HAVE THEM , SEND THEM TO ME AND THE CFW WILL BE MADE IN NO TIME!!!

README

I tried to make a beta and got error at the msg.xml so i tried to fix it ... then back on ps3 this time dosen't scans it ... i've been extracting-n-pacting on and off 4 you guys ... till it works

OKAY GUYS DOWNLOAD THIS AND PUT IT IN THE MFW KEYS FOLDER

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FOR MFW TO READ THE KEYS AND WORK

HERE IS THE FAMOUS AND NEWEST MFW MASTER WITH MY LATEST KEYS !!!

link: [Register or Login to view links]

BEWARE: CANT HACK LV1 WITHOUT PRIV keys

Here is list !!

UPDATED *OK* LIST FOR KEYS

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link for download: [Register or Login to view links]
signed pkg-pub-retail: [Register or Login to view links]

MetLDR -3.55-

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Update: OKAY GUYS DOWNLOAD THIS AND PUT IT IN THE MFW KEYS FOLDER: [Register or Login to view links]

FOR MFW TO READ THE KEYS AND WORK

HERE IS THE FAMOUS AND NEWEST MFW MASTER WITH MY LATEST KEYS [UPDATE3] !!!

Link : [Register or Login to view links]

BEWARE : CANT HACK PS3 WITHOUT PRIV keys

Here is list !! UPDATED *OK* LIST FOR KEYS

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link for download: [Register or Login to view links]

signed pkg-pub-retail: [Register or Login to view links]

MetLDR -3.55-

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