swap savegames between .3ds and .3dz

Discussion in '3DS - Flashcards & Custom Firmwares' started by ground, May 13, 2014.

  1. ground
    OP

    ground GBAtemp Advanced Fan

    Member
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    Mar 22, 2007
    Netherlands
    Hi,

    For now we can't swap the savegames between .3ds and .3dz files, but then I started to think about it and can this work (i don't have the capabilities to do it now, so i just thought to share it):

    1- if we change the unique id in the header of a .3dz to FFFFFFFFFF.... the savegame accepts the save of the .3ds file, so we can assume that the .3ds files uses the same crypt but takes FFFFFFFFFF as a "key".

    2- If we create a savegame with a lot of a's in it (for example name a zelda file aaaaaaaaaa), we know the decrypted savegame should contain a few 61 in the hex code.

    So should we be able to look how to encrypt and decrypt with different header ID's with this information? or am I to basic?

    thanks in advance