Post: Decrypt Or Dump LV0 For 3.60 CFW+ Exploit – Mathieulh
03-28-2011, 08:15 PM #1
kyskidz
Big Sister
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We’ve seen countless times that Mathieulh trying to give the scene all the hints he can, but this time, he pretty much telling you peeps the real deal way to the exploit that we’ve been yearning of all this time

Originally posted by another user
@xShadow125 You can update from your pwn 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, You must login or register to view this content. explained briefly what LV0 is in the console’s security

Originally posted by another user
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

Originally posted by another user
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.

Originally posted by another user
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


There you go, with all the information available out there i just wonder why didn’t anyone found the solution to the exploit that Mathieulh (and maybe some people we didn’t know) discovered weeks ago. Maybe instead of bitching why the guy did not release anything, try listening to what he said this time.


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The following 20 users say thank you to kyskidz for this useful post:

Arman M., basser1, chickensamw1993, cKyOne, djfatpickle, emersons35, gunhead88, jakeowns, juko18, khalids19, MajorPSP156, mrbonno, munirmaj, Press ►, PsYcHoSiS, Ryan_ward1, shaunyovls25, theycallmeryan, xRafiq-, yaro
03-30-2011, 03:49 PM #29
RGB
2JZ BBWWARRMMMMM
just need to learn more about lv0 then Smile
03-30-2011, 03:51 PM #30
yaro
I defeated!
So the 3.60 cfw comes or not i dont know xD what lv0 shit is some tut ?
03-30-2011, 03:55 PM #31
PsYcHoSiS
Eatin' poopy
Originally posted by deRez View Post
Wait, so basically, Lv0.2 doesn't even function yet?


Yes.. It will function on the new PS3's... In other words.. Don't buy a new PS3 :confused:
03-30-2011, 04:55 PM #32
viralhysteria
74261700027
Originally posted by PsYcHoSiS View Post
Yes.. It will function on the new PS3's... In other words.. Don't buy a new PS3 :confused:


Okay, i thought so because i didnt think they would be able to get the lv0 to function in the current ps3s without hardware modification

The following user thanked viralhysteria for this useful post:

PsYcHoSiS
03-30-2011, 05:02 PM #33
PsYcHoSiS
Eatin' poopy
Originally posted by deRez View Post
Okay, i thought so because i didnt think they would be able to get the lv0 to function in the current ps3s without hardware modification


Exactly.. +Rep for you because you aren't like
"zOMFG WTF DUZ LV0 DO? WIL IT WRK ON DA PS3 I HV NAO?"
03-30-2011, 05:50 PM #34
get_fukedup
I am error
am so confused that i decided to play the wii!!!!

i thing most of us need a little explanation about lv0...
03-30-2011, 09:17 PM #35
Originally posted by PsYcHoSiS View Post
Exactly.. +Rep for you because you aren't like
"zOMFG WTF DUZ LV0 DO? WIL IT WRK ON DA PS3 I HV NAO?"


Agreed bro, tired of this. :\

The following user thanked casavult for this useful post:

PsYcHoSiS
03-30-2011, 09:26 PM #36
Mtx_FuRy
Bounty hunter
Ok so they pretty much merged the old lv0, asecure_loader, and lv1ldr into the new lv0?
03-30-2011, 09:26 PM #37
Carter101
Gym leader
This is good info

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