User talk:Zecoxao

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The Last Piece of the Puzzle

How

  • By enabling diagnostic mode on the ps3, we can enable the use of JTAG again (it's temporarily disabled when diag mode isn't set)
  • It is possible to dump the syscon firmware using this method (in unencrypted state)
  • The JTAG registers/TAP-controllers need to be bruteforced / reverse engineered
  • The leaked service manuals present information about the pins connected to the JigPin
  • The ObjectiveSuite contains an object (DIAGSERVICE) used to diagnose the ps3 using JTAG
  • Using a DIY JigPin would facilitate the task, but we still need more info about the hardware and software interface used by ObjectiveSuite to handle this.
  • This would probably work on ps4 too (provided that the diag pin and the JTAG pins still exist)

Alternative (Through EEPROM, many thanks to ZeroTolerance for the info)

  • some useful links:

http://dangerousprototypes.com/docs/Bus_Pirate_101_tutorial (bus pirate)
https://www.saleae.com/downloads (logic analyzer)

  • Analyzer settings:

http://pastie.org/private/khwaczthr5j2td9jmdfihq

  • More info:

http://pastie.org/private/f7siriweadsnrpq6dilq

  • Read command:

0xA8 0xXX 0xXX (XX XX is block id)

  • Write command:

0xA4 0xXX 0xXX (XX XX is block id)

  • Check Status command:

0xA9 0x00 0x00 0x00

  • Some proof

https://mega.co.nz/#!hssQHZhI!bNMS3MgWx21iUrfLGBSoB2bA3Mfe3DVL23y_SENzDUw
https://mega.co.nz/#!wl8wSCKK!ZZkgeKd8hdRCMRpA2oWrrV5lirjupF_4k9boJkBpBfM

you need https://www.saleae.com/downloads

dump of eeprom with above data

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