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posted by malloc at 12:10 pm on 2005-07-27 |
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Feature: Version 2.00 firmware a Hackers friend or Nightmare ?
A MaxConsole user who wishes to remain known as 'Mr A' gives us the scoop on the new Version 2.00 firmware, he summarises three new features of the new firmware he thinks are great as well as detailed information as to why the Version 2.00 firmware will be one tough cookie to crack!
The format of the encrypted PRX files in flash has changed which means we can not decrypt these files using the current methods.
Summary of Best Features on Firmware revision v2.00
1) I think the browser is a very nice addition and works well. Its much better visually and functionally than the wipeout browser. Support for tabbed browsing is a welcome feature.
2) You can customise the look of the OS much more this time around. Now you can select one of the 12 original PSP backgrounds and lock it so it does not change every month, or you can select a picture from your memory stick to use as the background.
3) WPA support is a very welcome addition for many people who can only access WPA wireless networks.
Reasons why PSP Firmware version 2.00 will be one tough cookie to crack!
1) The format of the encrypted PRX files in flash has changed which means we can not decrypt these files using the current methods.
This is a big problem since in order to figure out the new format, you would first need a dump of decrypted code. The best way to get a dump of the decrypted code is to be able to run code on the PSP, but obviously right now there is no known way to run code on the 2.0 firmware.
And in order to run code on the 2.0 firmware you need to find an exploit, which at this stage would probably require having a dump of the decrypted code (trial & error exploits such as kexploit probably arent going to work anymore). So we've got catch-22 situation here.
I'm not saying that figuring out how to either run code on 2.0 or decrypt the 2.0 PRX files is impossible but it has certainly been made a lot more difficult now and we may need to look at alternative methods for each of these tasks.
Incase you are unaware of what a PRX file is, it's an executable module, similar to a windows .dll file. The PSP the kernel is made up of a number of ENCRYPTED PRX files and in order to reveal the kernel code, you need to either decrypt those files or get a ram dump. To get a ram dump you need code running on the PSP so thats not really possible on 2.0 right now and as already stated, neither is decrypting the PRX files
2) There are quite a few DNAS related files in flash (also when you update the firmware you are presented with a DNAS license). Not sure yet how DNAS is going to be applied on the PSP but its interesting that they've added it with 2.0.
You can discuss this information and the V2.00 firmware in this v2 forum thread.
Please note this is original MaxConsole content and we do not expect other websites to copy chunks and chunks from this article without even posting a source. If you wish to refer to this article, please feel free to post bits and pieces from it and remember to post a link to the full article at MaxConsole.
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