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AuDioFreaK39
Joined: 03 Jul 2005
Posts: 8
Location: CA, USA
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 Posted: Tue Jul 05, 2005 7:41 pm Post subject: How Do You Analyze The Contents of the DATA.PSAR File? |
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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.
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Danj
Joined: 15 May 2005
Posts: 70
Location: Peterlee, DURHAM, UK
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| Posted: Tue Jul 05, 2005 9:41 pm Post subject: Re: How Do You Analyze The Contents of the DATA.PSAR File? |
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| 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.
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bbb
Joined: 06 Jul 2005
Posts: 2
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| Posted: Wed Jul 06, 2005 2:02 am Post subject: |
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probably compression issue
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AuDioFreaK39
Joined: 03 Jul 2005
Posts: 8
Location: CA, USA
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| Posted: Wed Jul 06, 2005 6:12 am Post subject: |
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Well, ok, but how would you analyze the DATA.PSAR file anyways?
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MindWall
Joined: 10 May 2005
Posts: 70
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| Posted: Wed Jul 06, 2005 8:30 am Post subject: |
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if i'm not mistaken the following is a mrbrown or gorim quote:
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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
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Last edited by MindWall on Wed Jul 06, 2005 9:17 am; edited 1 time in total |
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AuDioFreaK39
Joined: 03 Jul 2005
Posts: 8
Location: CA, USA
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| Posted: Wed Jul 06, 2005 9:10 am Post subject: |
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So does that mean the "N" sections are the encrypted sections of data? I'm confuzed.
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MindWall
Joined: 10 May 2005
Posts: 70
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| Posted: Wed Jul 06, 2005 9:14 am Post subject: |
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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) |
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pyrosama
Joined: 13 May 2005
Posts: 66
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| Posted: Sat Jul 23, 2005 3:28 am Post subject: |
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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 |
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