xboxscene.org forums

Author Topic: Psv-file  (Read 97 times)

TheDon81

  • Archived User
  • Newbie
  • *
  • Posts: 4
Psv-file
« on: August 03, 2007, 10:04:00 AM »
It's impossible to edit it. It has some kind of security code... anyone here who knows how to bypass?
Logged

TheDon81

  • Archived User
  • Newbie
  • *
  • Posts: 4
Psv-file
« Reply #1 on: August 03, 2007, 10:33:00 AM »
Here is 2 exactly identical save-files for BoF3 on PS1. But they are saved after each other... meaning there are no actual differnces in stats, only the PS3-code.

Maybe some of you can check it out and learn a pattern...?

Savefiles:
First (old) - http://www.freewebs.com/folding-norway/new...24F46333030.PSV

Second (new) - http://www.freewebs.com/folding-norway/new...24F46333030.PSV

I compared the two files with an hex editor, and found out that they there are a number of differences in the beginning (code) and in the middle of the save as well. 4 instances mid-file...

This post has been edited by TheDon81: Aug 3 2007, 05:35 PM
Logged

TheDon81

  • Archived User
  • Newbie
  • *
  • Posts: 4
Psv-file
« Reply #2 on: August 06, 2007, 04:23:00 PM »
Well... I tried to edit an PC-emulator save, thought it could be easier to hack, but I found out that it's not!!!
I still get corrupted file message...

Seems like the original Playstation-save has a hack-safe system that needs to get cracked. Seems easier than the PS3 save, though.

Took the same comparing technique twice on the ePSXe emulator-saves and found fewer differences:

QUOTE

Compare 1 result:
-------------------------------
Offset    SaveA   SaveB   #A-B
------    -----   -----   ----
$00270     $3D     $37     6
$008EA     $09     $02     7
$008EB     $06     $0A     -4
$00EAE     $09     $02     7
$00EAF     $06     $0A     -4
-------------------------------
Compare found 5 differences

---------------------------------------------------------

Compare 2 result:
-------------------------------
Offset    SaveA   SaveB   #A-B
------    -----   -----   ----
$00270     $A8     $98     16
$008EA     $0C     $06     6
$008EB     $05     $03     2
$00EAE     $0C     $06     6
$00EAF     $05     $03     2
-------------------------------
Compare found 5 differences


Any help?
Logged

openxdkman

  • Archived User
  • Hero Member
  • *
  • Posts: 550
Psv-file
« Reply #3 on: August 07, 2007, 01:47:00 AM »
Sophisticated checksums...
Finding the checksum algorithm is not easy...
Logged

TheDon81

  • Archived User
  • Newbie
  • *
  • Posts: 4
Psv-file
« Reply #4 on: August 07, 2007, 02:09:00 AM »
So maybe I should make MANY comparences and try to find a pattern?
Oh well...

Thanx for the reply. smile.gif
Logged

GeneralOnx

  • Archived User
  • Newbie
  • *
  • Posts: 1
Psv-file
« Reply #5 on: November 22, 2007, 08:25:00 PM »
If someone were to break this then it would help with some frustration with playing my psx games all over again.
Well i'm off to go re-play Resident Evil 3 and try to get the unlockables again.
Logged