Happy new year! PSP Game UNO vulnerability revealed by Frostegater, port of CEF To Vita 2.02 incoming.

After a long time of waiting and a weeks-long Ninja release, Frostegater’s exploit is finally revealed to be in the PSP Mini game UNO. UNO joins the growing collection of PSP games with a buffer overflow vulnerability, and if our experience is to be trusted, Sony will remove it from their stores within 48hrs (although we hope the holiday season might help delaying this…), so hurry up and get it.

For those who just join us, developer Frostegater announced a few weeks ago that he would be porting Total_Noob’s CEF to Vita Firmware 2.02. CEF is a piece of software that allows users to run PSP Homebrews, plugins, and backups within the PSP emulator of the Vita. Since this is not official Sony software, it relies on flaws in some specific games in order to run. This time’s game is UNO.

But well, if you’ve been following this blog, you know what CEF does and why you want it, so if you are interested, hurry up, and get Uno now. Let me emphasize again that if you are interested, you want to buy that game now, not tomorrow, not in 2 hours, but now, as you don’t know when Sony will remove it from their stores.

The Game is available in the US, JP, and EU stores, but not in HK based on the reports I have. For those who are in a store where the game is not available, you can create an account in another country, and order a PSN code online. I will not promote any of them, but feel free to share your recommendations in the comments below.

If you do get the game, do not wait to install it on your Vita. A typical mistake is that people will buy from their PS3, download it to their PS3, and not install it to their Vita immediately. This does not work, as Sony has the possibility to remove the game from your download list, technically preventing you from easily copying it from your PS3 to your Vita.

Frostegater’s files will be released on this site as well as other scene websites in a few days (in general we wait until the game is not available in the Sony stores anymore), and until then, here are a few videos from Frostegater and myself showing the exploit in action.

Look what I just found... you might want to update your thread with it.
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Frostegater updates the UNO exploit, fixes crash at startup
January 2, 2013 in PS Vita, release, TN Hen by wololo | 58 comments
Yesterday Frostegater released his port of Total_Noob’s CEF to vita firmware 2.02. Some of you reported trouble running the exploit on the EU and US versions of the game. A quick investigation led us to understand this was a problem happening when the language settings were not set to “English” on your Vita (or rather, when the UNO game would not show up with the English interface for you).




Frostegater quickly investigated and updated his work. You should now be able to launch the exploit independently of your Vita’s language settings.

Frostegater also used the opportunity to remind me that he is not the one who found the UNO exploit (he “just” used it to make his port of CEF), but that so many people found it that it is difficult to find an actual “author”. This is already stated in his Readme file, but Frostegater wants to credit hackers xiaolin, zer01ne and MaxiExtreme for finding this exploit. Although we’re sure other people found this exploit as well, these are the ones we know about.

I also want to thank user 173210 who investigated and fixed the issue independently yesterday, which already unstuck most of you, here.

If you are having issues using this exploit, please have a look at our tutorial on how to install and run homebrews/isos before you ask any question, thanks

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The latest version of Frostegater’s port of CEF to Vita 2.02 can be downloaded here (or try this link if you are not seeing the latest files). If you enjoy Frostegater’s work, please consider making a donation to thank him for his efforts!