GTA-less Exploit Allows Homebrew On Firmware 2.0 - 2.80
Finally, it's here! As of today, the world of homebrew is no longer restricted to owners of Grand Theft Auto.
Following the publication of a new proof of concept TIFF vulnerability by
NOPx86,
a team of PSP developers has been working hard to turn it into an opening for homebrew on the PSP. We're pleased
to announce that the wait is over, with the release of a Hello World demo that runs on
all PSP firmwares
that are capable of viewing TIFF images!
You can see a photo of it in action
here. Alternatively,
you can
click here to download it and see for
yourself!
To install, just unpack the ZIP file to your PSP's PHOTO folder, and then attempt to view hello_world.tif.
Hello World will launch automatically. You may find that occasionally the full screen doesn't show -
this is a known problem, just restart your PSP by holding the power button until it turns off, then
open the image again. To quit, hold the power button until the PSP turns off.
So what happens next? This shows that we can run code via this exploit. It won't be too hard to
develop an eLoader that can use this exploit on v2.0 - v2.6. v2.7+ will be harder, due to extra
security, but will happen a little later. Kernel mode is unavailable on v2.8, but it is likely
that a downgrader is possible on all other firmwares. But then, with the possibility of kernel homebrew running without
the need for a game UMD, why would you need to downgrade?
Full credit is given in the Hello World, but repeated here: Thanks to NOPx86 for the initial
proof of concept on the x86 processor, and psp250, Skylark, Joek2100, CSwindle, JimP and Fanjita
for the PSP work. Thanks also to Ditlew, HarleyG and our families for general support during this
work.
Source:
Noobz.eu &
PSPUpdates