.Net 3DS Toolkit

.Net 3DS Toolkit is a code library intended to simplify extracting and rebuilding 3DS ROMs.

It is currently being rewritten in .Net Core 2.2 (and .Net Standard 2.1 once it's out). Please see the Old folder for the original source and details.

Current features:

Extract decrypted CCI files
Extract decrypted CIA files
Extract & Rebuild decrypted CXI files
Extract & Rebuild decrypted RomFS files
Extract & Rebuild decrypted ExeFS files
Allow reading data of individual files for all above formats without extraction

Planned features:

Console interface
GUI
Build ROMs

Credits

3dbrew.org for documentation
SciresM for [RomFS-Builder](https://github.com/SciresM/RomFS-Builder), which was adapted for use in this project

Ever notice how the majority of command-line applications require about a dozen commands for a single logical operation? This tool aims to fix that! ROMs can be extracted and repacked with a single command per operation, like so:

To extract:

Code: ToolkitConsole.exe MyRom.3ds RawFiles

To repack as a CIA:

Code: ToolkitConsole.exe RawFiles Repacked.cia

To repack as a 0-key encrypted CCI (for use with Gateway):

Code: ToolkitConsole.exe RawFiles Repacked.3ds -key0

OR

ToolkitConsole.exe RawFiles Repacked.3dz

Note: 3dz files will be invalid until a private header is applied.

To repack as a decrypted CCI (for use with Citra or Decrypt9):

Code: ToolkitConsole.exe RawFiles Repacked.3ds

To repack for HANS:

Code: ToolkitConsole.exe RawFiles G:/ MyHack

A GUI is available for anyone who doesn't want to bother with console commands. A .Net 4.6 code library is available for .Net developers making their own programs. See GitHub for library usage. Latest package will be on Sky Editor's MyGet feed and may be added to NuGet at some point.

System requirements:

.Net Framework 4.6
Free space on the system drive. Cleanup happens as soon as possible, but especially for larger ROMs, you may need several GB free.

Supported formats for extraction:

Decrypted CCI (aka .3DS)
Decrypted CXI (what Braindump gives you)
Decrypted CIA
NDS ROM

Supported formats for building:

Decrypted CCI (aka .3DS)
For use with Citra
Can be used for Gateway and Sky 3DS (with CFW) if encrypted using Decrypt9
0-Key Encrypted CCI
For use with Gateway
CIA
For use with CFW
HANS RomFS, Code.Bin, and Homebrew Launcher Shortcut
NDS ROM

Planned Features: Copy private header to 0-key encrypted CCI files as they are built. Until this is done, any *.3dz files created are invalid until a private header is added.

Credits:

SciresM for 3DS Builder (modified to use command-line arguments)
profi200 for Project_CTR's makerom
dnasdw for 3dstool
Asia81 for HackingToolkit3DS, which provided the usage for 3dstool.