I have a question to 5.5.2 update

Discussion in 'Wii U - Hacking & Backup Loaders' started by Vitalij1990, Jul 19, 2017.

  1. Vitalij1990
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    Vitalij1990 Newbie

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    Hey i have a question to 5.5.2 update yesterday i`ve got the 5.5.2 update and now i can`t use browserhax my Problem is that i need the browserhax because i used mocha for dlc.
    I doesn`t used haxchi or chbc.
    Only what ive got is the nanddump from the wiiu. 32gb nanddump.
    Can i restore back to 5.5.1 or not?
    Thank for your help :)
    And sorry for my bad english.
     
  2. Lacius

    Lacius GBAtemp Guru

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    It is currently impossible for you to run CFW of any kind on your Wii U. You shouldn't have updated to 5.5.2 without Haxchi or CBHC. You can't run browserhax on 5.5.2, and you can't downgrade to 5.5.1.

    Edit: Forgot about your NAND dump. You can presumably restore it with a hardmod.
     
    Last edited by Lacius, Jul 19, 2017
  3. EyeKey

    EyeKey GBAtemp Regular

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    Don't do it. It is way too risky. If you have OTP and SEEPROM (you should have if you had rednand) you can install haxchi on 5.5.2. But there is no any tool that does it yet.
     
  4. Lacius

    Lacius GBAtemp Guru

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    OP already updated to 5.5.2 foolishly.
     
  5. EyeKey

    EyeKey GBAtemp Regular

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    I know. I said that if he has OTP and SEEPROM, it is theoretically possible to install haxchi, even on 5.5.2.
     
  6. Lacius

    Lacius GBAtemp Guru

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    There's currently no way to do that. A hardmod is OP's only option right now.
     
  7. EyeKey

    EyeKey GBAtemp Regular

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    It is possible. There is no way to do it only because no one implemented such a tool.

    You can buy DS game, move it to USB, connect the USB to PC, edit the DS game and do contenthax [such tool is needed], and you have haxchi.
     
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  8. Lacius

    Lacius GBAtemp Guru

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    I didn't say it was impossible. I said there's currently no way to do it.
     
  9. Kafluke

    Kafluke GBAtemp Psycho!

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    If eyekey says you can do it id trust him. He's the dude that made all the nand backup and fix tools for the hardmod
     
  10. EyeKey

    EyeKey GBAtemp Regular

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    He said the same things only in different words. You can't do it right now because there isn't any tool to edit the USB (I am working on one but I don't know when it will be ready, I am hardly working on it).
     
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  11. Vertx

    Vertx Newbie

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    So, when the tool is ready, would it be necessary to buy a DS game to get haxchi?
     
  12. EyeKey

    EyeKey GBAtemp Regular

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    Yes, and OTP and SEEPROM are required. (which most people who want to install haxchi on 5.5.2 probably don't have)
     
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  13. Valery0p

    Valery0p GBAtemp Regular

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    #I fkng knew it:D
    Thanks you a LOT EyeKey, Your work will help a lot of people!
    Maybe this can help you for your tool ;) : https://github.com/yellows8/wiiu_wfsmount
    Forgive me if I'm wrong, isn't but the USB key calculated by encrypting the SEEPROM seed with the OTP usb key (which is the same for every console)?
    And aren't the the first 4 bytes of the seed taken from a certain ID, i don't remember his name, who can be read from some place on the wiiu?

    Also, [MAD MODE on] do you ever heard of a known plaintext attack? [MAD MODE off] ;)
     
    Last edited by Valery0p, Jul 20, 2017
  14. EyeKey

    EyeKey GBAtemp Regular

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    This tool is just straightforward decrypting with the key. I have done much more research on wfs than that. It is just that I am lazy and not finishing the tool.

    Hmm you may be right, so only seeprom is needed?

    According to the wiki the first 4 bytes is Wii U NG ID. But even if you know them you still have 12 random bytes left...
    And the crypto is fine, all the data is encrypted with cbc, with a unique iv for each sector (well because it is cbc the iv only matters for the first block, but the hash is there for the non-data blocks), and the data is also hashed (and the hash is encrypted) and the hash is checked. Not a lot that you can do.
     
    Last edited by EyeKey, Jul 20, 2017
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  15. Valery0p

    Valery0p GBAtemp Regular

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    Well, at least you have something ^_^ no one can interpret wfs-U right now.
    Again, sorry for my noob-inies, but what NG means? And we can really find it somewhere on the labeling?
    Also,it will take too long to bruteforce the other bytes? Ignore that, too many combinations...
    So you're saying, that two encrypted drive, from two different consoles, with the exact same content inside, will result in two different decrypted dumps?
    Last thing: after you decrypted the drive USB, an excluding what you said before, there is other encryption here? @EyeKey
    Sorry for annoying you so much :/
     
    Last edited by Valery0p, Jul 22, 2017
  16. piratesephiroth

    piratesephiroth I wish I could read

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    If the Wii U on 5.5.2 has seeprom.bin and otp.bin, it's possible to get its USB decryption key.
    Just purchase the DS VC game and install it on a USB drive, extract that drive data on the PC and decrypt it.
    Then get the USB key from another Wii U on 5.5.1 and encrypt the data with it, inject it back into the USB drive, plug it into the 5.5.1 console and install Haxchi on it.
    Extract the USB drive again, decrypt it, re-encrypt with the original 5.5.2 USB key, inject it back and voilĂ , Haxchi on 5.5.2.

    Alternatively one could provide a decrypted disk img of a USB drive with the DS Vitual Console + Haxchi already in it, so all the user would have to do would be to encrypt and use it after buying the game.
     
    Last edited by piratesephiroth, Jul 23, 2017
  17. EyeKey

    EyeKey GBAtemp Regular

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    I already explained in the other thread why it won't work.
     
  18. piratesephiroth

    piratesephiroth I wish I could read

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    uh? Why wouldn't it work? We can encrypt and decrypt the usb drives fine.
    Does the partition still contain additional data attaching it to the original console?
     
  19. EyeKey

    EyeKey GBAtemp Regular

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  20. piratesephiroth

    piratesephiroth I wish I could read

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    oh I see.. I noticed the files were broken when I looked at the dump in an hex editor but I thought it could be just some quirk of the file system.
    Well so we have to wait until at least the decryption/encryption is figured out.

    Hopefully you'll release this project on github or something so more people can help.
    All the Wii U is really needing is a file explorer so I hope this leads to something like a libwfs.
     
    Last edited by piratesephiroth, Jul 23, 2017