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  • Posted by PS3Hax Member News , on 31/12/2011 , @ 04:38pm


    naehrwert has updated his scetool, to version 0.1.1



  • Posted by GregoryRasputin , on 31/12/2011 , @ 03:49pm


    As another year ends and a new one begins, those of us still in 2011 and those of us in drinking to the new year of 2012, may wonder what the year ahead holds for the console world, in this article i will shed some light on the PS Vita’s EU/US launch in February.

    Release Date’s:

    • Philippines - January 10th 2012
    • Korea - February 11th 2012
    • Europe - February 15th/22nd 2012
    • North America - February 15th/22nd 2012
    • Australia - February 23rd 2012

    EU/Surrounding Countries(Africa, the Middle East and Australasia)Information:

    Price WiFi Model.

    • EU - €249.99
    • UK - £229.99
    • Australia - $349.95
    • New Zealand - $449.95

    Price 3G/WiFi Model.

    • EU - €299.99
    • UK - £279.99
    • Australia - $449.95
    • New Zealand - $549.95

    Launch Games:

    • Uncharted: Golden Abyss
    • ModNation Racers: Road Trip
    • Everybody’s Golf
    • WipEout 2048
    • Unit 13
    • Little Deviants
    • Reality Fighters

    Game prices range

    • EU - €29.99 - €49.99
    • UK - £24.99 - £44.99
    • Australia - $39.95 - $69.95
    • New Zealand - $54.95 - $89.95

    U.S. and Canada Information:

    Price WiFi Model.
    Price 3G/WiFi Model.
    Launch Games:

    • Escape Plan (PSN Only)
    • Hot Shots Golf: World Invitational
    • Hustle Kings (PSN Only)
    • Little Deviants
    • ModNation Racers: Road Trip
    • Super StarDust Delta (PSN only)
    • UNCHARTED: Golden Abyss
    • wipEout 2048
    • Gravity Rush
    • MLB 12 The Show
    • Reality Fighters
    • Unit 13
    • Army Corps of Hell
    • Asphalt Injection
    • Blazblue: Continuum Shift EXTEND
    • Dungeon Hunter Alliance
    • Dynasty Warriors Next
    • F1 2011
    • EA SPORTS FIFA Soccer
    • Lumines Electronic Symphony
    • Michael Jackson The Experience
    • Plants vs. Zombies (PSN Only)
    • Rayman Origins
    • Shinobido 2: Revenge of Zen
    • Tales of Space: Mutant Blobs (PSN Only)
    • Touch My Katamari
    • Ultimate Marvel vs Capcom 3
    • Virtua Tennis 4: World Tour Edition
    • LEGO Harry Potter: Years 5-7
    • Disgaea 3: Absence of Detention
    • Ridge Racer
    • Silent Hill Book of Memories
    • Supremacy MMA: Unrestricted

    Game prices range

    Whilst the official release date in Europe and America is the 22nd, there is a special group of people that will be lucky enough to get theirs a week early,
    those that get the First Edition Bundle, will get:

    • 3G/WiFi model
    • Limited edition case,
    • 4GB PS Vita Memory Card
    • Little Deviants game

    For $349.99

    The Canadian bundle includes a

    • WiFi model
    • Limited edition case
    • 4GB PS Vita Memory Card, and
    • Little Deviants game

    for $299.99

    All Regions

    PlayStation Vita will come bundled with six AR Play Cards and a voucher code to download three AR games.

    Also, a note for those looking at the second hand market for your games, you will have to pay around $15 for an online pass

    Unit 13

    Reality Fighters

    Uncharted Golden Abyss

    Little Deviants

    WipeOut 2048

  • Posted by GregoryRasputin , on 31/12/2011 , @ 02:38pm


    An anonymous developer has released a video of a Hello world on the PS Vita, this Hello world is not the same as teck4′s, but it does work the same way, via the PSP Emulator, here is a small quote from the source:

    Another coder who wishes to remain anonymous has managed to pull off a ‘Hello World’ on PS Vita. While the feat isn’t based on teck4′s earlier exploit, it does share the same approach, in that it executes code from within a PSP environment.

    It’s a proof of concept at this stage, with some timely visuals added for good measure.

    Via Wololo

  • Posted by GregoryRasputin , on 30/12/2011 , @ 09:24pm


    SKFU has been continuing his work on the PS Vita, during his tests, he discovered a flaw, here is what he says on is blog:

    Since I finally have access to a retail PS VITA, today I started with some basic tests.

    After a complete freeze of the system within the first 5 minutes after unboxing (*always happens to new consoles 4 me rofl*), I went on and noticed that there is a problem with the VITA’s encryption functions and was able to decrypt some test files directly via the system.

    I will post updates as soon as I have news :)

    - SKFU

    Source SKFU’s Blog

    For those able to contribute, don forget to visit
    Vita Dev Wiki

  • Posted by GregoryRasputin , on 30/12/2011 , @ 09:15pm


    Most of you know that the PS3 has a recovery mode, especially those of you that have installed a CFW, well it seems the PS Vita also has one, here is some information on it:

    Recovery Menu

    • Turn OFF your PS Vita (Press Power Button for 10 seconds)
    • Now press and hold “R” + Power + PS (PlayStation Button)
    • Wait…
    • Now you’re in Recovery Menu (Mode)

    Recovery Menu Options

    1. Restart System
    This option boots your system as normal without changing any settings or files.

    2. Rebuild Database
    This can be a usefull feature if you have lost files on your system for no apparent reason. Try using this feature to see if it can restore those files. This will also rewrite corrupted files within the database, potentially eliminating future issues. This feature should not erase any of your saved data or settings.
    Deletes messages, playlists, changes made on “Information” screens, trimming information for pictures in “Photo”, video thumbnails, video playback history and video resume information. This operation may take a long time depending on the type and number of data items.

    3. Format the memory card
    This will format the memorycard, effectively erasing all data currently on it.

    4. Restore PS Vita System
    This will restore your system to original including, formatting and erasing all of the data on internal flash and returning all system settings to default. This will not take your system back to a previous Firmware release. Use this option as a last resort, unless you have nothing on the console that you want or you want to erase everything on the console, do not use this option.

    5. System Update
    This can usefull if your system has become corrupted to the point you can not boot. This will allow the user to update their console with new firmware via
    PS Vita memorycard

    Original News Source

    Image and information from
    Vita Dev Wiki

  • Posted by GregoryRasputin , on 29/12/2011 , @ 01:06pm


    PS3HaX homebrew developer samson released a couple of homebrew app’s last week, as a Christmas present to his fellow PS3HaX members, here is a quote from his thread here on PS3HaX.

    samson sorry this wasn’t front paged sooner, it was on my to do list, but i got side tracked, with Christmas and other drama.

    open cubic/midier media player.. two programs linked up to make a very nice package..

    Open Cubic Player:
    a mod player is something I’ve been wanting to do for ages, it plays:

    8bit MID sounds really nice and @ startup auto builds and loads a playlist , artists covered: pendulum, skrillex, daft punk, portishead, moby, massive attack..

    in its current state it’s all usable and plays all known formats fine.. installs under music.. also i recommend a usb install… it does work with apps installed under music and makes it easy to add your own tunes..

    Oh and the source, its from a site called P S 3 H A X . N E T

    Download For 3.55
    Download For 3.41

  • Posted by GregoryRasputin , on 28/12/2011 , @ 01:54pm


    A hacker/group by the name of EXEtrimALL have released an assortment of of PSN games and DLC, the games DLC include:

    • Castlevania: Lords of Shadow - Resurrection DLC
    • Castlevania: Lords of Shadow - Revive DLC
    • Disgaea 3 DLC
    • Sword and Soldiers
    • Moon Diver
    • Metal Slug X
    • Dungeon Hunter: Alliance
    • Angry Birds
    • Shank
    • Gatling Gears
    • DeathSpank
    • Deathspank Thongs of Virtue
    • Auditorium HD
    • Pixeljunk Shooter 2
    • Resident Evil Director’s Cut
    • Resident Evil 2: DualShock Version
    • Resident Evil 3: Nemesis
    • Resident Evil 4
    • Final Fantasy VII,VIII,IX
    • Metal Gear™ Solid
    • Parasite Eve
    • Parasite Eve II
    • Crash Bandicoot
    • Crash Bandicoot® 2: Cortex Strikes Back
    • Crash Bandicoot: WARPED
    • CTR: Crash Team Racing
    • Syphon Filter 1,2,3
    • Dino Crisis 1,2
    • Metal Slug series

    For those of you that state this is supporting piracy, you are wrong, this is merely here for informational purposes.

  • Posted by GregoryRasputin , on 27/12/2011 , @ 04:47pm


    PSP developer Wololo has released a video of him running an Emulator on the PS Vita, here is a quote from the source:

    A few days ago Japanese developer Teck4 posted a picture of a “hello world” running on the PS Vita through the PSP emulator. I contacted him immediately with some help from Mamosuke, and I soon got enough information to start working on porting Half Byte Loader to this exploit (note that Teck4 is also working on exploiting this vulnerability further, but I don’t know how far he’s been).

    What you see in the video below is the game “Sonic & Knuckles” running in picodrive, a Megadrive emulator for the PSP.

    Wololo does an awesome “Good/Bad/Ugly” point of view regarding this exploit, which you can read at:
    Wololo’s Blog

    Also as many of you are aware, Sony released a new Firmware and whilst a couple of sites reported that this blocked the HBL exploit, Wololo points out that the video he created showcasing Sonic running on the Picodrive Emulator, running on the PSP emulator on the PS Vita, is in fact 1.51, so this update does not patch the exploit.

  • Posted by GregoryRasputin , on 27/12/2011 , @ 09:26am


    Ten days ago Sony released the PS Vita, ten days ago, they also released firmware update 1.50, today they release firmware version 1.51, here is a horribly translated quote from the changelog:

    From 27 December 2011 and began updating the system software version 1.51.

    To become available and some features of the PlayStation ® Network features, updates the system software of PS Vita (Update) is required. PS Vita also system software, by updating, adding and security can be enhanced many features. Please use the update to the latest version.

    Standard software while playing PlayStation ® Vita Some symptoms have been identified that affect the game progress.
    We’ve improved the symptoms of this software in the system.
    “NEXT Dynasty Warriors”

    Source Japanese PS .com

    Meanwhile in the other side of the PS Vita scene, PSP Developer Wololo discovered this update this morning, when he connected his PS Vita to his computer in order to transfer some files, in order to be allowed to transfer those files, he was met with a forceful update, no updating, no transfering files, here is what the developer said on his blog:

    Today as I was using the PS Vita “content manager” in order to copy some files to the PS Vita, the content manager refused to start until I updated my firmware to official update 1.510. (This literally happened 10 minutes ago)

    What surprises me is that the vita was disconnected, so I am assuming the update order came from the client on my PC (Update: confirmed. And the Vita refuses to run the content manager if the PC is not connected to the net).

    Read the full story at:
    Wololo’s Blog

    Thanks to 1337mods for the news tip

  • Posted by Thelostdeathknight , on 25/12/2011 , @ 12:19am


    So the holiday sprites have decided to bring the pain…. paintown that is! PS3HAX member lunuxx must be in the holiday spirit as he has compiled the latest paintown update for you to enjoy.  This update is bug fixes for mugen, some tweeks to paintown, amongst other things.  So I hope you all enjoy a couple rounds (or more) with friends and family!!

    Change Log and Quote:

    paintown engine - added parameter to scale sprites
    editor - added a bunch of new tools like overlaying animations and a combo viewer
    mugen - probably fixed some bugs
    paintown engine - characters can have intro animations now
    i guess you can say networking on the ps3 partially works
    in a test lan play worked with my ps3 and a laptop the laptop set to:


    Source: Lunuxx’s Paintown Mega Thread right here on PS3HAX

  • Posted by GregoryRasputin , on 23/12/2011 , @ 04:33pm


    Not long after the PS Vita was released, Teck4 a PSP hacker/developer, found an exploit on the PS Vita within the PSP Emulator, now this is awesome news, but it does not mean the PS Vita is hacked, it simply means that an exploit has been found solely on the PSP section only.

    The hello world is adapted from the Sparta SDK, which was created by PSP Developers Matiaz and Freeplay.

    Mamosuke who reported the hack last week, created a video to proof the exploit existed and today Wololo updated his website with information and released a video of proof, here is a quoter from the source:

    Last week, an exploit on the PS Vita through the PSP emulator was announced by Mamosuke. The exploit was found by Teck4, and, we won’t stress it enough, is a PSP exploit that gives us user mode access within the PSP emulator on the Vita. So this is not a Vita exploit per se, but it’s still very cool. Mamosuke confirmed this with a video a few days ago, and today I was able to confirm the exploit myself as shown in the video below (and I must admit that I spent way too much time working on that basic flame effect). The video below shows the exploit running on both a PSP 1000 and the PS Vita.

    I spent a good amount of time today confirming some of my hopes that it will be possible to run HBL, at least to some extent, with that exploit. It doesn’t mean I have ported HBL to the Vita yet, but I have strong hopes this will be possible. A handful of hackers are working on bringing HBL to the Vita (I won’t mention their names here as I don’t know if they want to be contacted on the subject), and it should be “relatively” easy to get something to work fairly soon. (It should be noted though that the Vita is quite sensitive and crashed on me several times when it went into “sleep” mode from the exploit screen… from there – am I just paranoid? – it seems it is impossible to reboot the machine for almost 10 minutes, which made me think I had bricked my vita… could it be a anti-hacking security? If the console detects several crashes, it takes longer to boot, in order to prevent brusteforce types of attacks?)

    I won’t discuss any release yet, it doesn’t depend on me only (this is, after all, Teck4′s exploit), but if I have my opinion to give on the subject, I would suggest to wait until the Vita is released in Europe and in the US. This gives us some time to polish HBL on this device, and hopefully the vulnerabilities we use to run HBL won’t have been patched by then.

    This is of course just a challenge with little to no practical interest… once we publicly reveal the exploit (in particular, the game used in it), it will be extremely easy for Sony to patch it (or remove the game from the Playstation Store), so probably only a few people will be able to benefit from it… but only time will tell, there is still hope, after all, that Sony doesn’t care about a tool that allows us to run user mode psp homebrews in a sandboxed emulator.

    Via teck4′s Twitter

  • Posted by PS3Hax Member News , on 21/12/2011 , @ 08:30pm


    It seems some talented dev behind the DS scene is interested on the ps3 and has been hard at work by dumping the dev_flash of the 4.0 firmware… thats right guys you heard it right UpSilon managed to dump the dev_flash contents for other to have a look, here is a rough translation of what he had to say:

    Here is a dump of the version 4.00 dev_flash
    I dump my earlier leaked firmware 3.73 (Available for download in the ” Download “), but my site was still under construction and I lost a lot of time to update due to the time I devote to my studies (Terminal LAC) and I did not have much time was devoted to the scene. During the holidays I am responsible, but I will try to give as much information as possible waiting for a response from Kakaroto.
    I shared these dumps for the attention of developers to program an emulator we dev_flash. For those who want to test dumps on 3.41JB with “FIRM JaiCrab Load” because you can try on my side, I used “CFWLoad 1.0″ in 3.41JB (PL3).
    Emulation looked heavy, I do could not leave the program because after a few seconds the console would have been totally blocked. I thought at first the problem was my jailbreak. However, this was not the case, because after I tried with a 3.41 dump (edit) and loading it well. I finally concluded that the emulator should help the dev_flash home to work, for this reason that when you make a NAND emulated with SHIFT it resets everything to ultimately make a regular MAJ that will change the real dev_flash your console. Attention, the emulator does not emulate completely dev_flash stored in your USB drive. (Internal HDD etc …).
    If developers are interested in these dumps, I hope they will do something. I for my part I work on the Factory / Service Mode firmware higher than 3.56 and the Nintendo 3DS.


    Download 4.0

    Also a dump of 3.73 for those interested
    Download 3.73

  • Posted by GregoryRasputin , on 21/12/2011 , @ 04:53pm


    PS3 Developer CrashSerious brought to my attention via Twitter and IRC, that a tool on JB-Kings download page is riddled with viruses, the tool in question is:
    MD5 verify tool—-verify MD5 CODE

    Info on Virus:

    FlySky.AD. is a virus that also has the characteristics of a worm.
    FlySky.AD. gets into a computer via e-mail, the Internet, floppy disks, etc, and it spreads by inserting its code in other files and programs. Its effects can range from simply annoying to destructive.
    Furthermore, due to its worm characteristics, FlySky.AD. also spreads by sending out copies of itself. Its main objective is to collapse computers and networks, preventing users from working with the affected computer.

    It uses stealth techniques to avoid being detected by the user:

    It uses techniques included in its code to hide itself while it is active.

    FlySky.AD. uses the following propagation or distribution methods:

    Exploiting vulnerabilities with the intervention of the user: exploiting vulnerabilities in file formats or applications. To exploit them successfully it needs the intervention of the user: opening files, viewing malicious web pages, reading emails, etc.
    Computer networks (mapped drives): it creates copies of itself in mapped drives.
    Computer networks (shared resources): it creates copies of itself in shared network resources to which it has access.


  • Posted by Pirate , on 21/12/2011 , @ 10:48am


    PS3 developer CrashSerious released a new tool called Unsig. This tool can be used to decrypt and re-crypt SIG files that are floating around the net. As an extra bonus CrashSerious also has a message for the community.

    CrashSerious explains what it does:

    Good Day everyone,

    This time I figured I’d release something I’ve had a while but didn’t think it would be useful to anyone. However, several people I mentioned it to were quite interested in the tool, so I figured I’d bring it out as a release. I’ll be honest, I have ulterior motives… We used the last month’s winnings to purchase Cobra dongles for the entire team. This month, we’re planning on using the donation (should you decide this is worthy to vote for…) to purchase flasher’s to protect our PS3′s from a Cobra/TB brick.

    This release is a tool that will decrypt (and then also re-encrypt) the SIG files that were leaked in the CEX-DEX packages earlier this year and also the files released by an0nymous a month or so ago. The SIG files have not gotten a lot of attention, maybe because no one could read them. However, that’s about to change.

    Why should you care about this release?

    Because the SIG files are a list of instructions for the objective suites application to interface to the lv2diag.self files that were leaked with the previous Objective Suites stuff. Very low level stuff, for the most part, that will actually let you modify settings in the PS3 firmware. With the proper information (the piece that math has kept to himself), CEX to DEX conversions are not only possible- but are a reality. Things like reading (and writing) the ECID, IDPS, KIBAN_ID, and console serial number… just to name a few. Basically, it’s a very low level trusted connection that is made and the PS3 does what you ask it to via Objective Suites.

    How do I use this?

    To un-SIG—- In the unsig tab, select “Open SIG File” and the file’s encrypted contents will be loaded and displayed in the first text box. Then Select “Decypher” and the Decyphered text will be displayed in the second. It will also create an Microsoft Excel readable (and editable) file in the same folder with “.XLS” added as an extension.

    To Re-SIG—- In the resig tab, follow the same exact process as above except select the xls file. The process works the same, except the file saved as a “.SIG” extension on it.

    Keep in mind, while this tool will create a valid SIG file that Objective Suites *CAN* use. It should initially be used as a tool to learn more about the SIG file format.

    If you find something useful in reversing the SIG files, do me a favor— put it in the wiki and give back to the scene, would ya? You can start off by looking here -> SIG File Format - PS3 Development Wiki

    What we were attempting to convey last month is that, honestly, people need to work together more. No one person is going to break the PS3 wide open. GeoHot, didn’t do it by himself. Kakaroto, won’t by himself. And neither will math. It’s time to work together as a collective group, and not as a bunch of disfunctional individuals. Together we are strong, separately we are just weak.

    ONE FINAL NOTE: the last release of Objective Suites that an0nymous leaked had a trojan in it— BE AWARE and BEWARE!! I know ps3hax released a cleaned one and the first release was virus free. Make sure you get that one if you run the Objective Suites application. HOWEVER, the SIG files in the An0nymous release are new and of value to the scene.

    Source: PSX-Scene
    Download: MultiUpload

  • Posted by Pirate , on 20/12/2011 , @ 01:29pm


    We recently had a competition for 3x E3 Flashers. For a sum up the competition consisted of submitting a picture of yourself (or others) related to PS3Hax. We had many great submissions for this contest and it was a hard decision to come to. Ultimately the decision was made on number of likes the picture received in the thread, and overall creativeness for submission.

    Here is a compiled album of all the eligible submissions to the contest:

    And the winning submissions:

    [Winner #1]
    [Winner #2]
    [Winner #3]

    Congratulations to the winners! If you have won, please contact me (Pirate) via private message on the forums with your mailing address.

    Stay tuned for more exciting contests/giveaways only at PS3Hax :)

  • Posted by Pirate , on 19/12/2011 , @ 12:36pm


    Over the weekend, the company that created PS3USERCHEAT dongle has managed to clone the infamous True Blue dongle.


    • Booting of games from v3.6+ (up to v3.73) from special BD-R discs available from official resellers
    • Runs games up to v3.56 from HDD in conjunction with ´backup managers´
    • Does not require the Power/Eject trick
    • Custom v3.55 Dongle firmware behaves like OFW when ´JB-King´ is not inserted
    • Manufactured from highest grade components and Actel based
    • Durable and high quality plastic case design
    • Tough and durable plastic packaging
    • Further features to be added as they are developed
    • Supports Fat and Slim consoles currently running any firmware up to v3.55
    • And any PS3 console which can be downgraded from v3.6+ to v3.55 (NOTE: Requires other tools, ´JB-King´ currently can’t downgrade a Console)
    • Supports all regions of consoles
    • Supports all regions of ISO´s to be released
    • Rock solid crystal oscillator on board for flawless timing
    • The ´JB-King´ dongle allows booting of the latest the ISO´s (3.6+) from special BD-R discs which can be purchased from all official resellers.
    • The discs can be burned by any BD-R recorder and there are no special requirements on either PC or BD burner types.


    So for those who were interested in TB but not the price, this may be a cheaper alternative to you. We have not received this dongle yet but we will get a review sample soon, and will let you know how it is.

    And for those griping about the dongle, yes its another clone - but at least we know its possible to clone and someone can hopefully figure out what was done with the JB King that we couldn’t figure out with the True Blue and  bring a scene-free solution :) .

    It always plays out the same way, a high premium product, a bunch of cheap clones, and then a free solution available.  The reason TB was priced so high initially is because the company knew that the dongle would be cracked/cloned eventually so they maximized their profits in their short window.  Now with a clone on the market, you bet there will be more TB clones that follow this one and a scene solution will not be  far off.

    [Official JB-King site]

  • Posted by GregoryRasputin , on 18/12/2011 , @ 01:26pm


    PS3/PSVita Developer SKFU has updated his PS Vita firmware extraction application, here is a quote from his blog:

    I just updated the PS VITA FW xTractor, changelog is attached below.

    The 2.00 version had a problem setting the filenames correctly as the 1.0+ updates have different files than the older ones. Anyway, enjoy…


    • Filename fix
    • Download FW added
    • Minor stuff


    Some more images:

    And don’t forget to visit:
    Vita Dev Wiki

  • Posted by GregoryRasputin , on 17/12/2011 , @ 04:26pm


    Now i am posting this rumour and making sure you understand it is a rumour before i post any more.

    PS3HaX member zecoxao posted a link on IRC, containing information on a supposed “Hello World” on the PS Vita by a hacker by the name of teck4 , now the site is Japanese, so translation leaves a garbled mess, but what does seem clear, is that this rumoured hello world, utilizes the PSP Emulator, here is a translated quote(any Japanese readers can give a better translation, please do) :

    Added two new clear images, thanks to GraybackPSP

    PS Vita PSP at the first place only because it is emulation, emulator running on the fact that just because we can run your own code does not change much. So while hacking into the system are reproduced in an environment that is running on the PSP will own code.

    Half-start at the maximum of the PSP Homebrew Byte Loader (reproduction of) is enough.

    Some might suspect that I’ll not do FAKE, exploit teck4 his unpublished exploit is genuine.

    PSN version save game exploit with other titles, so there are some that may be realized in the start of the PSP Homebrew PS Vita Once you have established how to start the HBL, the saved data is Sony ” Administrative Assistant for PlayStation content “must be transferred to the PS Vita, and further to transfer the state must now transfer the save data folder into the Hello World binaries that only the saved data . Will be transferred into the data folder in the save if the body can then be started with Vita HBL.

    And that is a big possibility that such measures are easily crushed to prevent unwanted save game file transfer for applications that work under the control of Sony.

    In addition, PS Vita Min Gol exploit so far as such details as if it had been like the PSP PS Vita measures also seem to emulate the PSP.

    Source GameGaz

    Via IRC

    Thanks to akela and zecoxao
    Now as i said, this is a huge rumour and is posted merely for discussion purposes, we have either the first hack, or the first fake.


    I found teck4′s blog via his twitter
    teck4′s Blog

    And if you can read Japanese
    teck4′s Twitter

    Update 2

    wololo from wololo.net a long running PSP development site, has shed some light on the exploit, here is what he says:

    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 haven’t tried it yet, but knowing Mamosuke fairly well I can tell you it’s 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? That’s what teck4 tried, and the answer is yes, so he managed to run unsigned code on the PS Vita.

    For those who join this blog for the first time, basically how this works is that a special save data file is crafted for a specific game. When the game is asked to load the save data, through a flaw in the game code we manage to re-route the game into executing code that we wrote ourselves. That code is usually very simple, displaying a simple message (typically “hello world”, hence the name).

    From there, what happened for the PSP was that we integrated these exploits into our homebrew loading tool, Half-byte Loader, which allows people to load more interesting homebrews such as emulators, etc…

    wololo go’s into more detail about this exploit on his blog, linked below:
    Thanks to Szossze.NET for the wololo.net tip.

    Also a clarification, from what i understand, this method only uses the PSP emulator, so will only have access to PSP elements on the PS Vita, so homebrew native on the PS Vita isn’t yet possible, but via the PSP Emulator it is