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PS3 HDD Decryption PoC From a PC By Flat_z and Glevand Arrives

800°
102w ago - Following up on the previous work by PlayStation 3 developer Graf Chokolo, today naehrwert has announced news of a PS3 HDD decryption proof-of-concept (PoC) from a PC as a result of reverse-engineering work done by flat_z and glevand.

Download: [Register or Login to view links] / [Register or Login to view links] (Mirror)

Below are the details (via ps3devwiki.com/wiki/HDD_Encryption), to quote:

Introduction

  • The following information was reverse engineered from LV1, Storage Manager in LPAR1 and sb_iso_spu_module.self.
  • I'm able to decrypt/encrypt my PS3 HDD and VFLASH on PC now.

HDD Encryption

  • XTS-AES-128 is used to encrypt all data on PS3 HDD.
  • XTS is NOT CBC!!! It's AES-ECB with tweak XORing. AES-CBC is impractical for HDD encryption. Each sector can be encrypted/decrypted independantly from other HDD sectors.
  • Good paper about XTS-AES: ntnu.diva-portal.org/smash/get/diva2:347753/FULLTEXT01
  • VFLASH is encrypted twice. First with ENCDEC keys and then with...

 

PS3 Linux OtherOS++ Cold Boot Custom Firmware (CFW) by Glevand

250°
104w ago - Following up on his previous work, today PlayStation 3 developer glevand has made available a Linux Cold Boot 3.55 Custom Firmware (CFW) OtherOS++ for PS3 Slim users via Gitbrew that loads into Petitboot with a single button press.

Download: [Register or Login to view links] / [Register or Login to view links]

To quote: Hmm, it would be really nice to cold boot Linux on SLIM. The problem is this. On SLIM we patch GameOS loader and add the OtherOS++ support.

The OtherOS++ loader reads Petitboot from VFLASH and loads it in case the OtherOS flag is set. But at cold boot we cannot access VFLASH immediately, that doesn't work, i tried even to implement retries with sleep calls, no chance.

And today i took a look at GuestOS loader in LPAR1 process 9 (LV1 3.15) and noticed the following interesting thing. It doesn't matter on old OtherOS if we want to cold boot OtherOS...
 
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