How Do You Analyze The Contents of the DATA.PSAR File?

AuDioFreaK39 · Post by **AuDioFreaK39** » Tue Jul 05, 2005 7:41 pm

Is there a certain program or compiler that will let someone analyzie the data.psar files in the 1.51/1.52 firmwares? I, along with some others think this is the next major step to exploiting the psp. Here is one of my reasons for thinking this:

The 1.51 DATA.PSAR file has a size of 10,682KB, while the 1.52 DATA.PSAR has file has a size of 10,044KB. This means that Sony has removed something since 1.51. Also, the DATA.PSP files are like that as well. 1.51's DATA.PSP file is 3,618KB while 1.52's DATA.PSP file is 3,594KB.

Danj · Post by **Danj** » Tue Jul 05, 2005 9:41 pm

AuDioFreaK39 wrote:The 1.51 DATA.PSAR file has a size of 10,682KB, while the 1.52 DATA.PSAR has file has a size of 10,044KB. This means that Sony has removed something since 1.51. Also, the DATA.PSP files are like that as well. 1.51's DATA.PSP file is 3,618KB while 1.52's DATA.PSP file is 3,594KB.

This is an erroneous assumption. It's much more likely that the 1.52 firmware is simply better compressed than the 1.51.

bbb · Post by **bbb** » Wed Jul 06, 2005 2:02 am

probably compression issue

BBB

AuDioFreaK39 · Post by **AuDioFreaK39** » Wed Jul 06, 2005 6:12 am

Well, ok, but how would you analyze the DATA.PSAR file anyways?

MindWall · Post by **MindWall** » Wed Jul 06, 2005 8:30 am

if i'm not mistaken the following is a mrbrown or gorim quote:

DATA.PSAR

First 16 bytes of the PSAR file
00 to 03 == "PSAR" (magic for this file)
04 to 07 == 01 00 00 00
08 to 0B == NN NN NN NN (size of encrypted section, not including PSAR header)
0C to 0F == 01 00 00 00

PSAR-structure
1. Header
2. type A section
__a. Header
__b. Data
3. type A section
__a. Header
__b. Data
4. type B section
__a. Header
__b. Data
....
N-1.type A section
__a. Header
__b. Data
N. type B section
__a. Header
__b. Data

Type A : 272 bytes (0x110)
Type B : Variable size data

AuDioFreaK39 · Post by **AuDioFreaK39** » Wed Jul 06, 2005 9:10 am

So does that mean the "N" sections are the encrypted sections of data? I'm confuzed.

MindWall · Post by **MindWall** » Wed Jul 06, 2005 9:14 am

read on here:
http://forums.ps2dev.org/viewtopic.php?t=931

edit:

just want to point out that newer games come with the 1.5 ver update in the sysdir/update
there is the usual param.sfo and
eboot.bin (data.psp)
data.bin (data.psar)

pyrosama · Post by **pyrosama** » Sat Jul 23, 2005 3:28 am

So it has them unpackaged....

When using a 1.0 and runniung the game does it launch the updater off of the UMD or does it copy it to the MS? If it copies it to the umd then does it package it?

Thanks,
PyroSama

How Do You Analyze The Contents of the DATA.PSAR File?

How Do You Analyze The Contents of the DATA.PSAR File?

Re: How Do You Analyze The Contents of the DATA.PSAR File?