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PS Vita Dev Wololo Unveils VHBL Success with New PSP Game Exploit

PS Vita Dev Wololo Unveils VHBL Success with New PSP Game Exploit 1000°
138w ago - Today PlayStation Vita developer wololo has announced news of VHBL success using a new PSP game exploit courtesy of neur0n with details below.

To quote from his blog: Sometimes, it’s just that simple...

Neur0n has been kind enough to share with me the details of his latest user mode exploit, so that I could help porting VHBL to his game on the EU and US versions (yes, the game seems to be available on all stores, and don’t stop reading here, it gets better).

Sometimes porting VHBL to a new game can be a pain in the rear. Many times, as I discovered the hard way, we hit a wall and have to give up after dozens of hours of investigation.

On this exploit too, had I been alone working on it, I would have given up. It seemed impossible to free most of the ram (VHBL basically needs to cleanly remove the game from the ram, in order to load homebrews instead), and the exploit ended up with about 2MB of free ram, instead of the 24MB that we usually expect.

But hey, that’s where comes the joy of working with talented people like Neur0n: he figured out, within 24hours, how to free the additional 22MB. I am not sure really how he found out, and why it works, but it damn works.

So I can proudly...
 

Guide to Porting VHBL (PS Vita Half-Byte Loader) Game Exploits

Guide to Porting VHBL (PS Vita Half-Byte Loader) Game Exploits 1300°
152w ago - This weekend PlayStation Vita developer wololo has made available a guide to porting VHBL (PS Vita Half-Byte Loader) to individual game exploits for those interested.

This news comes proceeding the recent Motorstorm Arctic Edge and Everybody's Tennis PSP / PS Vita game exploits.

Below is the guide, to quote from his blog (linked above): This guide assumes that you found a user mode exploit in a game, and that you were able to write a binary loader.

So now what’s next? Well, as you probably know if you’ve gone that far, the PSP scene doesn’t really like “hello worlds”. A hello world is nice, but it accomplishes nothing, it just draws Sony’s attention to your exploit, and you know the vulnerability will be patched soon, while nobody really used the exploit.

Well, the next step is, ideally, a HEN or a custom firmware. Of course, this requires a kernel exploit, and...
 

PS Vita Half Byte Loader (VHBL) Release Incoming, Details Arrive

PS Vita Half Byte Loader (VHBL) Release Incoming, Details Arrive 1300°
157w ago - Following up on his previous update, today PS Vita homebrew developer wololo has announced that the PS Vita Half Byte Loader (VHBL) will arrive shortly after March 1, 2012 with details below.

To quote: "This has been a tough week for lots of you, coming to my blog everyday to see that no new information was available about the release of VHBL. Trust me, it's been a much tougher week for me, making sure things go according to my humble plan, coping with a few more issues than expected, and overall, taking all the insults about "being a faker" or "trying to boost my ego" without being able to say anything else than "please trust me".

Ok, let's reveal a few essential things here, starting with the bad news: The game used by Teck4′s exploit is not available on the US vita store. Blame Sony and their "275 out of 900 PSP games available for your vita" scheme for this, not us. Part of the waiting time was to see if Sony would add this game to the US store at some point. It is obviously compatible since it is available in other continents, so my guess is that this is a marketing or a legal decision.

Long story short, people in the US who want...
 

PS Vita Half Byte Loader (HBL) Development FAQ by Wololo

PS Vita Half Byte Loader (HBL) Development FAQ by Wololo 1300°
164w ago - Today PS Vita hacker wololo has made available a Half Byte Loader (HBL) development FAQ for those interested in progress thus far on Sony's PlayStation Vita handheld console.

Also below he states that he has ported HBL for Teck4's exploit successfully and updated to EU/US versions.

To quote: I managed to port HBL to the US version of Teck4′s exploit in exactly 45 minutes (including writing the savedata exploit and the binary loader), which is a new personal record, thanks to the scripts included in HBL's repository, and also to the fact that the different versions of the game are internally fairly similar (which is to be expected because technically the game is supposed to be the same, just translated, but I seem to recall it wasn't that easy for the Hotshots golf exploit)

I also updated the EU/US versions of this HBL port to get the tweaks I worked on for the past weeks in order to get a fair amount of homebrews to work.

The next step for me is to write a bit of documentation on how to use all this, and then patiently wait. As far as a release is concerned... well check the FAQ I wrote yesterday.

I could spend time polishing...
 

PS Vita Half Byte Loader (HBL) Progress Update By Wololo

PS Vita Half Byte Loader (HBL) Progress Update By Wololo 1300°
165w ago - Following up on his previous update, PlayStation Vita hacker wololo has shared a progress update on the PS Vita Half Byte Loader (HBL).

Additionally, Nabnab has also made available a video showcasing some hidden PS Vita information for those interested!

To quote: A quick report: I'm making some progress on porting HBL to the Vita. Although I'm sad to say that I can't get syscall estimation to work, I got some major homebrews such as Doom to run already, so overall I think it's in an acceptable shape.

Because it is roughly stable now, today I focused on porting HBL to the EU version of the exploited game (I was working - obviously - on the Japanese version of the game so far). This went smoothly and I can confirm HBL runs fine on the EU version of the game, although of course I could only test on a PSP, not on a Vita.

I used the opportunity to refresh my two guides, how to write a binary loader and how to port...
 

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