- New Super Mario Bros

Discussion in '3DS - Flashcards & Custom Firmwares' started by dontay0100, Jul 29, 2012.

Jul 29, 2012

- New Super Mario Bros by dontay0100 at 4:44 AM (4,835 Views / 0 Likes) 17 replies

  1. dontay0100
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    Member dontay0100 GBAtemp Fan

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    Well I'm sure everyone is aware that the new super mario bros that will be releasing on August 19th is also being released in a downloadable form... I have a good feeling that once we have a downloaded 3ds game it will open up new ways to decrypt and extract files that will lead a way to hack 3d mode... all we can do is dream lol
     
  2. Tom Bombadildo

    Contributor Tom Bombadildo Honk!

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    No. No it won't. Unless Nintendo accidentally includes a giant sign that says "HEY GUYS HERE ARE ALL OF THE KEYS YOU NEED! HAVE FUN!" that won't happen.
     
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  3. dontay0100
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    Member dontay0100 GBAtemp Fan

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    Nothing will ever come with negativity
     
  4. PaulAldrich

    Newcomer PaulAldrich Member

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    he is right tho
     
  5. Rydian

    Member Rydian Resident Furvert™

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    They've had eshop/download-only games for a while now...

    This is just the first of it's type in the fact that it's dual retail and eshop.
     
  6. dontay0100
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    Member dontay0100 GBAtemp Fan

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    Exactly its the first retail to be released as a download... something new to compare with the ripped roms!!
     
  7. Rydian

    Member Rydian Resident Furvert™

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    The downloads are encrypted on the SD with a unique key to that system (from what I've seen). Even then, the ROM of the cart will not be the same exact program that's downloaded, as the downloaded version will have been modified to run off of SD and work in the eshop and crap.
     
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  8. 3DSGuy

    Member 3DSGuy No longer in scene

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    Actually, the CXI inside the game ROMs don't have to be modified to be installed to the SD Card. (Well at least for dev units they don't have to be)
     
  9. easycrashing

    Member easycrashing GBAtemp Regular

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    may buy the system eventually (when it gets cheaper) just for this game, loved the old mario (nes) games - minus 2.
     
  10. Rydian

    Member Rydian Resident Furvert™

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    Still, it's not just the CXI that's encrypted but the entirety of the data as a whole, so having the cart ROM won't help in getting at the actual SD contents, right?
     
  11. 3DSGuy

    Member 3DSGuy No longer in scene

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    Well ROM files don't contain CXI/CFA files entirely encrypted, only the contents of the CXI/CFA files are encrypted. Unlike the SD Card where the .APP files (Encrypted CXI/CFA files) are entirely encrypted with a per-console key(on top of the encryption of the CXI/CFA content). So having the ROM would provide a copy of the decrypted form of .APP data on the SD Card, but won't AFAIK help you decrypt the .APP data on the SD Card. But in saying that the CXI/CFA files don't have to be modified to be installed to the SD Card, Nintendo could change them for other reasons, like for instance changing the product code because it's a "retail digital download" .
     
  12. Luigi2012SM64DS
    This message by Luigi2012SM64DS has been removed from public view by a moderator, Dec 8, 2016.
    Jul 30, 2012
  13. Paper Mario Fan
    This message by Paper Mario Fan has been removed from public view by a moderator, Dec 8, 2016.
    Jul 31, 2012
  14. Vampire Lied

    Member Vampire Lied Resident sociopath

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    The Rom and eshop versions won't be identical from the start seeing as the eshop version will contain extra data for the digital instruction manual. That in itself is extra data that could get confused with anything useful I would think. Then again, I admittedly don't know much at all about this stuff other than it probably won't work
     
  15. 3DSGuy

    Member 3DSGuy No longer in scene

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    Umm no, both can have (and probably will have) Digital Instruction manuals

    For SD Card apps:
    Source

    For Game Roms:

    Source

    My point being Nintendo doesn't have to modify the CXI/CFA inside a game ROM (CCI) to prepare it for being an installable title.
     
  16. 3DSGuy

    Member 3DSGuy No longer in scene

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    But there is a way to check if the eShop version and retail cartridge version are the same. By checking the hashes of course. All downloadable 3DS titles are accompanied by a TMD which contains a SHA-256 hash of the decrypted content. Now that the EUR ROM for this game has been dumped, it is now possible to compare.

    Using 3DSExplorer, you can extract the Game NCCH and the Electronic Manual NCCH from the ROM. Then generate a SHA-256 hash for each NCCH files and compare it to these hashes taken from the title's TMD on Nintendo's CDN:

    Game NCCH (339 MB) : CFB606E95DA6B4951FC5F1B4D14DA5E78CEC2515C372A178978F651D032249EB
    Electronic Manual NCCH (2.67 MB) : 59B436E8520C710BD843CCB6B6ED25B0FE840DF8A64EE408920CC003926ED0F2

    If they match, it is definitive proof that NCCH files do not have to be modified, to be run off the SD Card for retail units.
     
  17. 3DSGuy

    Member 3DSGuy No longer in scene

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    Well we have some results (now that I got my hands on the ROM), and it is mixed.

    The Game CXI is different, but the manual isn't.
     
  18. Rydian

    Member Rydian Resident Furvert™

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    Wouldn't it just be non-executable data anyways, and thus no need to be signed as it's a (packed) resource?
     
  19. 3DSGuy

    Member 3DSGuy No longer in scene

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    No it's still signed, see CFA. It's a NCCH file like CXI. But also because the Manual CFA was the same for both cartridge and digital download, this is proof that the NCCH key for eShop and game card titles is the same for retail units.
     
  20. Rydian

    Member Rydian Resident Furvert™

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    Damn, they seem to have planned a lot harder than we thought.
     

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