DecryptedExeFS.bin Extraction, How-To

Discussion in '3DS - ROM Hacking, Translations and Utilities' started by cots, Jul 5, 2016.

  1. cots
    OP

    cots GBAtemp Advanced Fan

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    6
    Dec 29, 2014
    United States
    How do I extract then rebuild the contents of DecryptedExeFS.bin ?
     
  2. Oorah

    Oorah Advanced Member

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    Jul 1, 2016
    United States
    What file was it your were extracting? .3DS, .CIA, or .CIX?
     
  3. ihaveamac

    ihaveamac GBAtemp Guru

    Member
    14
    Apr 20, 2015
    United States
    Tigard, OR
    https://github.com/dnasdw/3dstool/releases
    Code:
    3dstool -xvtf exefs exefs.bin --exefs-dir exefs --header exefsheader.bin  # extract
    3dstool -cvtf exefs exefs.bin --exefs-dir exefs --header exefsheader.bin  # create
    
    there's probably some gui program out there that does it, I don't know of.

    if you need to make your own exefs header, this might help: http://www.3dbrew.org/wiki/ExeFS
     
  4. cots
    OP

    cots GBAtemp Advanced Fan

    Member
    6
    Dec 29, 2014
    United States
    Well, I converted a 3DS to CIA so I assumed the resulting CIA was decrypted, but was wrong so I had to decrypt the CIA too. I got it all figured out now. I was writing a guide that since was published -> https://gbatemp.net/threads/tutorial-nes-injection.433414/

    — Posts automatically merged - Please don't double post! —

    I actually used your github guide in decrypting the CIA and credited you in it.
     
    ihaveamac likes this.
  5. Oorah

    Oorah Advanced Member

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    1
    Jul 1, 2016
    United States
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