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March 28, 2011 // 6:57 pm - Today PS3 hacker Mathieulh has tweeted some new details on dumping LV0 from PlayStation 3 3.60 Firmware and obtaining the new keys, followed by Ps3WeOwnYoU claiming he has already reproduced it to confirm it works.

Below are all the tweets, as follows:

Mathieulh's Tweets:

  • xShadow125 You can update from your own pup only from 3.55 or lower, unless you have an exploit.
  • xShadow125 Of course that should be fixed in upcoming lv0 revisions anyway (By moving the ldrs to the top of lv0)
  • xShadow125 You run the 3.60 lv0, then you switch the nor, and pull the cell reset line, and you dump the extra KBs where the loaders are.
  • xShadow125 Basically you have a nor with 3.55 (or lower) lv0 and your own small lv1 code that does the dump, and 3.60 lv0 on the other.
  • xShadow125 You wont get all of lv0 but the part with the loaders shouldn’t be overwritten.
  • xShadow125 You can actually get all the 3.60 keys/loaders without knowing lv0 keys by dumping lv0 from ram with dual nor and signed lv1.
  • To those planning on building a 3.56+ pup for whatever reason, the files attributes changed, the group and user ids for the files as well.
  • The new 3.56+ values for tarballs are the following: owner_id, "0000764" group_id, "0000764" owner, "tetsu" group, "tetsu" ustar, "ustar"
  • You can use fix_tar to use those new values. Use with caution.
  • By comparison, those are the pre-3.56 values. owner_id, "0001752" group_id, "0001274" owner, "pup_tool" group, "psnes" ustar, "ustar"
  • Ps3WeOwnYoU You need to either decrypt or dump lv0, then you can get the encrypted loaders and decrypt them with the metldr key. Good luck.

So, to decrypt this LV0 thing, we need to get to know it better. In the latest blog post by rms, he has explained briefly what LV0 is in the console’s security.

Anyway, let’s really discuss something PS3 instead of my PC xD, let’s start with Lv0, the most unknown level of the PS3. Lv0 initializes PS3 base hardware such as PowerPC/PPU portion of Cell/BE, SPU isolation for asecure_loader, and gelic ethernet/WLAN device. Lv0 also proudly proclaims itself as the "Cell OS Bootloader".

In older firmwares, 0.80-ish to 3.56, Lv0 initialized SPU isolation on one of the SPUs, then it loaded and decrypted asecure_loader. Asecure_loader or metldr then decrypts the isolated loader, in this case, lv1ldr, then lv1ldr decrypts lv1.self. In 3.60 this changed. Lv0 now has all of the loaders integrated into it as one large fat binary.

All the keys one needs such as Public ECDSA key/AES CBC key and Initialization Vector and ECDSA curve type are in there. Just go ahead and grab them if you can get the ldrs out of the binary.

So, unless you can decrypt Lv0, no 3.60 "CFW" for you . Is there any need for it anyway?

Mathieulh also has some facts to clarify about LV0.

1. lv0 isn’t a loader it’s a ppu binary
2. Lv0 isn’t encrypted per console and can be updated with the rest of the coreos
3. Lv0 is decrypted by the bootloader, there is no such thing as a lv0ldr.
4. The bootloader keys cannot be updated/modified on EXISTING hardware
5. lv0.2 is NOT a binary, it’s a new metadata for lv0 which is to be decrypted and verified by a new bootloader (which is to be available on future ps3s), it is NOT used by the current bootloader (and thus in current playstation 3 consoles)

But wait, messing with this thing could lead to the YLOD tragedy, unless you have those expensive NOR flasher you might want to proceed, and that’s according to rms again.

Lv0 also does some more interesting stuff such as SPU mailbox handling, and eEID integrity checks. Lv0 also used to check for QA flag and proper token, that is now in a spu isolated self in Core OS. Now, if you did tamper with eEID, lv0 will panic out, and your console will then "YLOD", and you’d need a flasher for your PS3 to recover.

Finally, from rms on lv0: Lv0 initializes PS3 base hardware such as PowerPC/PPU portion of Cell/BE, SPU isolation for asecure_loader, and gelic ethernet/WLAN device. Lv0 also proudly proclaims itself as the "Cell OS Bootloader". In older firmwares, 0.80-ish to 3.56, Lv0 initialized SPU isolation on one of the SPUs, then it loaded and decrypted asecure_loader.

Asecure_loader or metldr then decrypts the isolated loader, in this case, lv1ldr, then lv1ldr decrypts lv1.self. In 3.60 this changed. Lv0 now has all of the loaders integrated into it as one large fat binary. All the keys one needs such as Public ECDSA key/AES CBC key and Initialization Vector and ECDSA curve type are in there. Just go ahead and grab them if you can get the ldrs out of the binary.

So, unless you can decrypt Lv0, no 3.60 "CFW" for you. Is there any need for it anyway?

Lv0 also does some more interesting stuff such as SPU mailbox handling, and eEID integrity checks. Lv0 also used to check for QA flag and proper token, that is now in a spu isolated self in Core OS. Now, if you did tamper with eEID, lv0 will panic out, and your console will then "YLOD", and you’d need a flasher for your PS3 to recover.


PS3 Hacker Mathieulh on 3.60 Firmware LV0 Dump Exploit & Keys

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#321 - SanctumSlayer - January 20, 2012 // 7:00 am
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Oh yes Denida sorry I forgot about that. You're right about that. Sorry HackSoul.

Heymanhru I forgot about the steep prices there.

#320 - HeyManHRU - January 20, 2012 // 6:59 am
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Brazil isn't a third world country, it's actually far from being a third world country, lol. I don't see why he should be stuck playing PS2 games just because PS3 games are overpriced in Brazil.

#319 - Denida - January 20, 2012 // 6:53 am
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Before you start being too harsh on HackSoul, you may want to remember that SanctumSlayer, that is living in Brazil still have to endure a market with very high gaming prices...

#318 - SanctumSlayer - January 20, 2012 // 6:45 am
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That's no excuse HackSoul! If money's so tight, a PS2 is what you should be in the market for. Wait til the PS4 comes so your 3rd world country will be able to afford PS3s. Heck I'm surprised you're even on the Internet!

#317 - HackSoul - January 20, 2012 // 6:34 am
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Sorry guys. I overreacted... Sorry KaKaroto! You're one of best on the Scene!

Where I live there's no way to afford proper copies of games and also there's no work for anyone... So buying a game is just possible every 8-10 months with the money I get from one-day jobs.

#316 - hotd54me - January 19, 2012 // 6:10 pm
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I always thought that math whatever the hell his name is was arrogant. he talked down at people and in a roundabout way called them stupid when they didn't understand his "work" and never really contributed much. On the other hand kakaroto team has always shown proof, explained and elaborated all their work, and didn't tell a bundle of lies. job well done sirs! I look forward to your future exploits!

#315 - elser1 - January 19, 2012 // 6:09 pm
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i haven't turned my jb ps3 on for months.. LOL will be soon though when e3 dual boot gets delivered..

all i want is backups and trophy support on psn.. LOL

#314 - jarvis - January 19, 2012 // 6:00 pm
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Quote Originally Posted by dbraganti View Post
I agree with you, never said i was not interested in run backups and i also think the same as you. Everyone who wants a CFW to rub their SNES emulator is nothing more than an liar.

The main point i was trying to expose is that there are plenty of games here and everyone who owns a ps3 can buy some. The choice of buy or not is of each one and that i will never argue against...

This is not true. I have a 3.55 CFW in place solely for emulators. It's really what I've wanted for years; one simple box to plug into my TV with ten years of gaming history on it. I am happy.

I have a second PS3 kept up to date to play PS3 games. Actually I haven't turned this one on in months. I've pretty much had it with the console world. I've gone back to PC gaming. Skyrim mostly

#313 - racer0018 - January 19, 2012 // 3:49 pm
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This is good news. I just hope that it all works out good and we get to take a look at this soon.

#312 - dyceast - January 19, 2012 // 3:00 pm
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Props to KaKaRoTo and his team....

Amazing WORK!!!