Remote play protocol?

Discussion in 'PS Vita - Hacking & Homebrew' started by Downsider, Apr 17, 2012.

Apr 17, 2012

Remote play protocol? by Downsider at 3:08 AM (2,554 Views / 0 Likes) 9 replies

  1. Downsider
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    Newcomer Downsider Newbie

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    Has anybody figured out the protocol the PS Vita uses to communicate with the PS3 over remote play? If anybody has any documentation on the subject, please let me know. If it's been reverse engineered, then writing a PC server to remote play PC games with your Vita should be possible, unless there's a required handshake with PSN or something.
     
  2. Tom Bombadildo

    Contributor Tom Bombadildo Honk!

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    From what I understand, you'd need kernel access in order to have remote play work on the PSVita due to various reasons. What reasons, I have no clue, but it's only something I glanced at while over at Wololo's /talk forums.
     
  3. Downsider
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    Newcomer Downsider Newbie

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    I mean by mimicking the data that the PS3 is sending out toward the Vita, if you can log that (And I'm sure you can, isn't the PS3 completely reverse engineered at this point? Or if it's over your local network you can dump the packets by using your PC as a WAP), then you should be able to connect the two devices. At that point, surely you can foster your own stream information by reverse engineering the protocol.
     
  4. Tom Bombadildo

    Contributor Tom Bombadildo Honk!

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    Yeah it doesn't work that way.

    We needed to make a homebrew app on the PSP just to get it to work, and while we have PSP access via the various exploits for the Vita, it seems as if you could use you can use that PSP homebrew app to remote play PC games. However, it apparently turns out that you need kernel access in order to use Wifi in PSP mode via the exploits, however this hasn't been confirmed yet.
     
  5. Downsider
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    Newcomer Downsider Newbie

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    This has nothing to do with any thing PSP or PSV cracking related. You don't need any sort of homebrew access on the Vita's side. The PC would simply mimic the data the PS3 sends, but foster in it's own stream of video. It's a standard technique that can be compared to a WoW private server, or any game's private server for that matter. You look at the data the client and server are sending, determine the protocol that it uses to communicate, and then write your own server to replace the official one where an input gives the expected output, in this case the PS3. The client never has to be modified, just establish a connection to the "private server" in whatever way it can.
     
  6. koji2009

    Member koji2009 GBAtemp Maniac

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    Downsider: Connections are encrypted in this day and age. You can't simply "mimic" a datastream and expect the Vita to accept it. There is definitely handshaking going on between the two systems that would require a lot of reverse engineering as well as discovering the AES code used to encrypt the transmissions.
     
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  7. Downsider
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    Newcomer Downsider Newbie

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    The key used to encrypt has to be available on both the client and server. I was under the impression the PS3 was completely cracked? You should be able to retrieve the key through some reverse engineering. I'm not completely without experience, I've helped create and crack private servers and closed source clients for some games, and I can assure you that unless the PS Vita is some kind of edge case or uses a middleman server to negotiate the handshake (In which case you can still establish the connection from PS3-PSV through a man-in-the-middle server to retrieve the key from the Vita) these concepts should apply universally.
     
  8. Tom Bombadildo

    Contributor Tom Bombadildo Honk!

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    LOL. If the PS3 was completely cracked we wouldn't still be stuck on 3.55 CFW
     
  9. Downsider
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    Newcomer Downsider Newbie

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  10. Un4tural

    Member Un4tural GBAtemp Regular

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    i believe they got remote play on VAIO lappies or something... would probably be easier to crack that than one on ps3 and vita... especially since it is mostly same thing except for whatever they use for controls...

    then again, sonys remote play is quite crap... input lag is too much, i am amazed at how they achieve such lag, even on home network... feels like playing FPS with a guy from the moon... at least 200ms ping, consider playing games on home network produces close to no lag at all... theres even that silly gaming console box contraption that steams games to you tv w/e (PC games i believe) and that works perfectly fine from god knows where... disapoint me this
     

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