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PS3 TrueAncestor EBOOT Resigner v1.6 Update is Now Available


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100w ago - Following up on the previous revisions and a handy BAT File Script from maconell, today PlayStation 3 developer JjKkYu has updated his SCETool Script to PS3 TrueAncestor EBOOT Resigner v1.6 with the changelog below.

Download: [Register or Login to view links]

TrueAncestor EBOOT Resigner v1.6 Changelog:

1. Add alternative option for 4.21 CFW.
2. Add instructions.
3. Hide scetool screen feedback.

Guys, enjoy Rogero 4.21 v2 with alt options.




Stay tuned for more PS3 Hacks and PS3 CFW news, follow us on Twitter and be sure to drop by the PS3 Hacks and PS3 Custom Firmware Forums for the latest PlayStation 3 scene updates and homebrew releases!

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PS3 News's Avatar
#10 - PS3 News - 148w ago
Here are a few quick updates from naehrwert (twitter.com/naehrwert) for those following:

  • haha just figured the eid3 algo, nice!
  • KaKaRoToKS and I added basic NPDRM support to scetool
  • SELF generation works now for SPU and PPU, except for compressing the data and NPDRM
  • added SPU SELF generation to scetool

Also from his site: nwert.wordpress.com/2011/12/24/individual-infos/

Individual Infos

One of the PS3′s console specific cryptography works as follows:

At factory time there is a console specific key generated, probably from a private constant value and a console specific seed. Maybe that’s the key used for encrypting bootldr and metldr. Fact is, that metldr stores another console specific keyset (key/iv) to LS offset 000000. That keyset is probably calculated from the first one. At factory time the isolated root keyset (how I call it) is used to encrypt the console’s “Individual Infos”, like eEID.

But not the whole eEID is encrypted the same way, special seeds are used to calculate key/iv pairs for the different sections. And not even that is true for every eEID section, because for e.g. EID0 another step is needed to generate the final section key(set). Each of the isolated modules using such an “Individual Info” has a special section that isoldr uses to generate the derived key(set)s.

But the generation works in a way, that the section data is encrypted with aes-cbc using the isolated root keyset, so it is not possible to calculate the isolated root keyset back from the derived key(set)s, because aes shouldn’t allow a known plaintext attack. So far I can decrypt some of EID0′s sections, EID1, EID2 and EID4. EID5 encryption should be similar to EID0′s but I lack the generation keys for that one.

PS3 News's Avatar
#9 - PS3 News - 149w ago
Today Naehrwert has released PS3 SCETool v0.0.4 for those interested.

Download: [Register or Login to view links]

From his Tweet (twitter.com/#!/naehrwert/status/145481343411830784) the changes are as follows:

scetool 0.0.4 [Register or Login to view links]

(added 32 bit ELF "unselfing")

isoldr_emulate [Register or Login to view links]

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Bartholomy's Avatar
#8 - Bartholomy - 150w ago
Eidtool is what we need, rest is useless I think

PS3 News's Avatar
#7 - PS3 News - 150w ago
Below are some more updates from naehrwert for those following..

scetool 0.0.3 [Register or Login to view links]

output for vsh.self pastie.org/2958961

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Added ELF64 support to scetool!

but I extended eidtool by some new functions

PS3 News's Avatar
#6 - PS3 News - 151w ago
Here is a follow-up from his blog today as well for those following: nwert.wordpress.com/2011/11/29/about-spu-channels-64-72-and-73/

If you are reversing the PS3′s isolated SPU modules, you will eventually notice channels 64, 72 and 73. Here are some C functions, that roughly describe how they work:

About SPU channels 64, 72 and 73


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It seems that lv1ldr is storing it’s version into a special storage area.

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And e.g. isoldr reads the version from the storage area and compares it to it’s own version. If the check fails, isoldr will just stop execution.

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I wonder what else is stored in the area and how long the data in it persists, so my next idea is to code an isolated elf, that allows me to specify the value written to channel 64 and then dumps the data from channel 73.

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