3ds Rom Decryption Key Generator

I have a couple switch roms. They are all.xci format. BigBlueBox has released decryption keys for.xci and.nca roms but the application is not understandable and there is no tutorial online on how to decrypt these roms. Please post down in the comments and tell me what you think I need to do. (And no, HactoolGUI will not work. May 09, 2017  This guide explains how you can generate XORpads for a CTR Cart Image (.3ds/.cci) so you can extract its files on a computer. Generally decrypting the game directly is preferred now. If you still need to generate XORpads, or only want access to the ExHeader/ExeFS, XORpads can still be used.

This page will be updated with GodMode9 instructions soon!

This will be outdated soon with an update to ctrtool which has the boot9 keys.

This guide explains how you can decrypt a game's contents so you can extract its files on a computer.

For decrypting or browsing currently installed titles, read 'Dump or browse installed digital titles'.

Requirements

  • A 3DS system with arm9loaderhax
    • arm9loaderhax is not technically required, but is the simplest and most popular setup on 3DS systems. Other setups are not covered in these guides.
  • Decrypt9WIP by d0k3
    See its README on how to set it up.
  • Some patience with huge games

Setting up

  1. Get the latest release of Decrypt9WIP.
  2. Make two folders on the SD card named files9 and /files9/D9Game.
  3. Get these slot keys (or an aeskeydb.bin with them, provided by Plailect's Guide) and place them at the root or /files9 (you can find them online):
  • slot0x25KeyX.bin - 7.x NCCH
    • Needed for decrypting Secure2 on Old3DS <7.0 or arm9loaderhax
    • SHA256: 7e878dde92938e4c717dd53d1ea35a75633f5130d8cfd7c76c8f4a8fb87050cd
  • slot0x18KeyX.bin - New3DS 9.3 NCCH
    • Needed for decrypting Secure3 for some New3DS exclusive titles on Old3DS without arm9loaderhax
    • SHA256: 76c76b655db85219c5d35d517ffaf7a43ebad66e31fbdd5743925937a893ccfc
  • slot0x1BKeyX.bin - New3DS 9.6 NCCH
    • Needed for decrypting Secure4 for some New3DS exclusive titles in every environment
    • SHA256: 9a201e7c3737f3722e5b578d11837f197ca65bf52625b2690693e4165352c6bb
  1. Get seeddb.bin for titles using 9.6 (seed) encryption.
  • Needed for digital/CIA games
  • Contains game-specific seeds

Decrypting

  1. Place your games and applications (.3ds, .cci, .app, .cxi, .cfa, .ncch, .cia) in /files9/D9Game.
  2. Enter Decrypt9 using one of the various entry points.
  3. Choose 'Content Decryptor Options'.
  4. Choose the option that fits what you need:
  • NCCH/NCSD File Options..
    • NCCH/NCSD Decryptor
      Decrypt NCCH containers and partitions (.3ds, .cci, .app, .cxi, .cfa, .ncch)
  • CIA File Options..
    • CIA Decryptor (shallow)
      Decrypt CIA contents, don't decrypt NCCH containers
    • CIA Decryptor (deep)
      Decrypt CIA contents and NCCH containers
      • This is usually what most users want for CIAs.
    • CIA Decryptor (CXI only)
      Decrypt CIA contents and first NCCH container for compatibility with Gateway 3DS
  1. Wait for the process to finish.
  2. Your games should now be decrypted and usable on a computer.

Common Errors

/files9/Decrypt9.log can contain errors that might have happened decrypting games.

  • '7.x crypto will fail on O3DS < 7.x or A9LH'
    'Secure3 crypto will fail'
    'Secure4 crypto will fail'
    • You need the appropriate key above.
  • More will be added here..

Nintendo 3DS ROM Tools & Guides - create an issue or contact me if you have questions

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This guide explains how you can generate XORpads for a CTR Cart Image (.3ds/.cci) so you can extract its files on a computer.

Generally decrypting the game directly is preferred now. If you still need to generate XORpads, or only want access to the ExHeader/ExeFS, XORpads can still be used.

Requirements

  • A 3DS system with arm9loaderhax
    • arm9loaderhax is not technically required, but is the simplest and most popular setup on 3DS systems. Other setups are not covered in these guides.
  • Decrypt9WIP by d0k3
    See its README on how to set it up.
  • One of the Python scripts for NCCHInfo generation:
    • ncchinfo_gen.py - will generate XORpads for all partitions and sections
    • ncchinfo_gen_exh.py - will generate XORpads for ExHeader/ExeFS only
  • Some patience with huge games, especially if generating XORpads for the RomFS
  • Basic knowledge of the Terminal/Command Line

Useful notes

  • Generate pgp key pair ubuntu. NCCH partitions of a CCI

    PartitionUseType
    0Game Executable[[CXI
    1Manual[[CFA
    2Download Play Child container[[CFA
    6New3DS Update Data[[CFA
    7Old3DS Update Data[[CFA

    3, 4, and 5 do exist and can be extracted, but don't usually contain anything.

  • Possible XORpads (all beginning with 000400000XXXXX00), assuming ncchinfo_gen from this repository was used:

    • .Main.exheader.xorpad - Game Executable ExHeader
    • .Main.exefs_norm.xorpad - Game Executable ExeFS
    • .Main.exefs_7x.xorpad- Game Executable Exefs (7.x/9.3/9.6)
    • .Main.romfs.xorpad - Game Executable RomFS
    • .Manual.romfs.xorpad - Manual RomFS
    • .DownloadPlay.romfs.xorpad - Download Play Child container RomFS
    • .N3DSUpdateData.romfs.xorpad - New3DS Update Data RomFS
    • .O3DSUpdateData.romfs.xorpad - Old3DS Update Data RomFS

Setting up

  1. Get the latest release of Decrypt9WIP.
  2. Make a folder at the root of the SD card named files9
  3. Get these slot keys (or an aeskeydb.bin with them) and place them at the root or /files9 (you can find them online):
  • slot0x25KeyX.bin - 7.x NCCH
    • Needed for decrypting Secure2 on Old3DS <7.0 or arm9loaderhax
    • MD5: 817fd1bffba60f79cf8cdf19caf28923
  • slot0x18KeyX.bin - New3DS 9.3 NCCH
    • Needed for decrypting Secure3 for some New3DS exclusive titles on Old3DS without arm9loaderhax
    • MD5: 32ae55444f3feca802a6ed251a619bc7
  • slot0x1BKeyX.bin - New3DS 9.6 NCCH
    • Needed for decrypting Secure4 for some New3DS exclusive titles in every environment
    • MD5: 79cd40405d0f5417ae73a064318cbf0d

Generating

  1. Place your roms in a folder.
  2. Use one of the ncchinfo_gen scripts to generate a file called ncchinfo.bin. For example:
  1. Place ncchinfo.bin in /files9 on your 3DS SD card.
  2. Enter Decrypt9 using one of the various entry points.
  3. Choose 'XORpad Generator Options'.
  4. Choose 'NCCH Padgen'.
  5. Wait for the process to finish.
  6. Your XORpads will now be in /files9 and are usable on a computer.

Common Errors

3ds Rom Decryption Key Generator Download

/Decrypt9/Decrypt9.log can contain errors that might have happened generating.

Enter Decryption Key

  • More will be added here..

Online Decryption Tool No Key

Nintendo 3DS ROM Tools & Guides - create an issue or contact me if you have questions

What Is A Decryption Key

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