NSMB2 DLC Decryption?

Discussion in '3DS - Flashcards & Custom Firmwares' started by Hiccup, Sep 18, 2014.

  1. Hiccup
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    Hiccup GBAtemp Advanced Fan

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    How would someone, in theory, decrypt the New Super Mario Bros. 2 DLC files (which are stored on the SD card after they are downloaded from the e-shop)?
     
  2. Quincy

    Quincy Your own personal guitarist :3

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    Decrypting isn't very much the problem. The problem would be re-encrypting them with your keys x'D
     
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  3. loco365

    loco365 GBAtemp Guru

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    In theory, or probably in practice, you'd need your per-console key which is stored in the NAND. Once you have access to that, you can then use that key to generate an xorpad to xor your DLC. Then, you'd need to generate a second xorpad, which is the one we can currently do (Providing DLC is stored with this kind of encryption) and decrypt it into content you can then play around with.
     
  4. Oxybelis

    Oxybelis GBAtemp Fan

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    Or patch kernel to load decrypted DLC.
     
  5. gamesquest1

    gamesquest1 Nabnut

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    or apply the decrypted DLC to the decrypted rom and re-pack XD
     
  6. Hiccup
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    Hiccup GBAtemp Advanced Fan

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    I'm more interested in unpacking the DLC files, than repacking them.

    Unfortunatly, I do not have a homebrew-able 3DS. Would anybody be able to help? You can PM me if you want.
     
  7. Duo8

    Duo8 I don't like video games

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    Is that even possible?
    Might be very hard, depending on how the 3DS handles DLCs.
     
  8. petspeed
    This message by petspeed has been removed from public view by Densetsu, Sep 20, 2014, Reason: Please create your own thread if you have a different question.
    Sep 20, 2014
  9. Hiccup
    This message by Hiccup has been removed from public view by Densetsu, Sep 20, 2014, Reason: Reply to a deleted post.
    Sep 20, 2014