The Faceless Master
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Japanese PSP scener Mamosuke announced today on his blog that he was able to confirm a Hello World running on the PS Vita through the embedded PSP emulator. The exploit was made by developer teck4, and most likely relies on one of our good buffer overflow friends. and for those who are wondering is it real?, my current answer is that I havent tried it yet, but knowing Mamosuke fairly well I can tell you its true.
Technically, the idea behind the hack is simple but brilliant: the PS Vita has a PSP emulator, and we have plenty of PSP game exploits lying around can we assume they will work on the emulator? Thats what teck4 tried, and the answer is yes, so he managed to run unsigned code on the PS Vita.
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Thats the theory. Practically, although this is good news, there are a bunch of obstacles which will probably not make the exploit so interesting for most users (at least not yet): First of all, the exploit happens within the PSP emulator on the Vita, and will not directly give access to the Vita hardware or features. So this can theoretically only allow to run PSP homebrews on the vita (which, to me, is already fairly nice), and also, only User-mode ones ( a game exploit does not give access to the PSP kernel mode, so some tools and functionality is missing, which prevents emulators such as Daedalusx64 for example to run at full speed).
Full Story: http://wololo.net/wagic/2011/12/18/day-1-hello-world-the-ps-vita-already-hacked/