Homebrew [Request] A tool for Encrypting/Decrypting .cia Files

[acrash]

When it comes to .cia files, I haven't found a tool that could decrypt them to match no-intro database, and I haven't found any tool to re-encrypt them at all. My understanding is that the No-Intro database for encrypted and decrypted 3DS files is based on the tool "GodMod9" which can only be used on the 3DS right now.
Giving that at this point in time we have ways to access the 3DS keys/bootroms/seeddb.bin, can we compile the GodMode9 encryptor/decryptor/converter to run on PC?

Some of the tools I found:-

NDecrypt:
Decrypts/re-encrypts .3ds files matching no-intro database
Doesn't support .cia files
+Also decrypts/re-encrypts DS and DSi files+


3DS + CIA Rom Script:
Decrypts/re-encrypts .3ds files matching no-intro database
Decrypts .cia files but not matching no-intro database & can't re-encrypt them


Batch CIA 3DS Decryptor:
Decrypts .3ds/.cia files but not matching no-intro database & can't re-encrypt either

 

[lone_wolf323]

Other than adding a bit more text. 1. what are you trying to accomplish with this and 2. how does this really differ from the last time you asked this?

 

[acrash]

Other than adding a bit more text. 1. what are you trying to accomplish with this and 2. how does this really differ from the last time you asked this?

Sorry about that. I honestly forgot that I asked this before in gbatemp.

 

[jtabc123456]

When it comes to .cia files, I haven't found a tool that could decrypt them to match no-intro database, and I haven't found any tool to re-encrypt them at all. My understanding is that the No-Intro database for encrypted and decrypted 3DS files is based on the tool "GodMod9" which can only be used on the 3DS right now.
Giving that at this point in time we have ways to access the 3DS keys/bootroms/seeddb.bin, can we compile the GodMode9 encryptor/decryptor/converter to run on PC?

Some of the tools I found:-

NDecrypt:
Decrypts/re-encrypts .3ds files matching no-intro database
Doesn't support .cia files
+Also decrypts/re-encrypts DS and DSi files+


3DS + CIA Rom Script:
Decrypts/re-encrypts .3ds files matching no-intro database
Decrypts .cia files but not matching no-intro database & can't re-encrypt them


Batch CIA 3DS Decryptor:
Decrypts .3ds/.cia files but not matching no-intro database & can't re-encrypt either

Did you ever figure out a solution to this? I'm interested in achieving the same thing.

Edit:

Actually, it looks like this fork of ntool can do it with the "cia2cia" command:

https://github.com/Dimensional/ntool

 

[King_Poyo]

are you trying to install a game cartridge's data in a cia form so you can install it? cuz there is a program on Universal updater.

Post automatically merged: Sep 3, 2025

is your profile picture a wolf with ralts colors?