ROM Hack 3dsconv.py - script to easily convert 3DS ROMs to CIA

[ihaveahax]

I'm still getting errors, but at least a .cxi file is being built.

I'm not really sure why this is happening yet.
you're using 2.2, yes? what game is this? did you get makerom from Project_CTR on github?

 

[ongo_gablogian]

I'm not really sure why this is happening yet.
you're using 2.2, yes? what game is this? did you get makerom from Project_CTR on github?

Yes, Cubic Ninja, and yes.

Thanks again for helping out, I've been having a ton of weird python related problems recently.

 

[ihaveahax]

Yes, Cubic Ninja, and yes.

Thanks again for helping out, I've been having a ton of weird python related problems recently.

try this:

python --version

if it's 2.7.11 (earlier might work, like 2.7.9/10, idk), then try "python 3dsconv.py game.3ds".

 

[ongo_gablogian]

try this:

python --version

if it's 2.7.11 (earlier might work, like 2.7.9/10, idk), then try "python 3dsconv.py game.3ds".

I'm on 2.7.12. I tried again with "python" and it gave me the same error as before.

 

[ihaveahax]

I'm on 2.7.12. I tried again with "python" and it gave me the same error as before.

try this makerom build. it should be the latest commit right now

 

[ongo_gablogian]

try this makerom build. it should be the latest commit right now

Damn it's still giving me the same error.

 

[ihaveahax]

might as well leave this here:

I released 3.0 recently. makerom is no longer required; everything is self-contained in the script, including all of the CIA rebuilding.

it should also work properly on lower-memory/32-bit computers. makerom was pretty bad with larger games and low RAM.

https://github.com/ihaveamac/3dsconv/releases/latest

@ongo_gablogian see if it works for you now?

 

[Deleted User]

I just wanted to say thanks a bunch for making this tool; it has helped me out massively when I've wanted to quickly convert my projects from cci to cia in a flash!
Keep up the excellent work!

 

[ongo_gablogian]

might as well leave this here:

I released 3.0 recently. makerom is no longer required; everything is self-contained in the script, including all of the CIA rebuilding.

it should also work properly on lower-memory/32-bit computers. makerom was pretty bad with larger games and low RAM.

https://github.com/ihaveamac/3dsconv/releases/latest

@ongo_gablogian see if it works for you now?

Nice, I tested Cubic Ninja and Zero Time Dilemma, both worked perfectly.

Thank's so much for the update, seems like a lot of work went into it!

 

[ihaveahax]

well I've released two things since 3.0, so here they are.

https://github.com/ihaveamac/3dsconv/releases/latest

3.1:

• Show percentage for each partition
• Other minor changes

3.2:

• New: Zerokey crypto support without XORpads
  • PyCrypto is required. This can be installed with pip.
  • This does not decrypt the contents of the CIA. Custom firmwares today don't support zerokey, only Gateway and Nintendo developer tools/firmware at the moment. Decrypt the CIA with Decrypt9 before installing. Decryption might come later, depending if custom firmwares support zerokey anytime soon.
• New: --ignorebadhash to ignore bad SHA-256 hash of the ExHeader (is this even that useful?)
• Code cleanup and other things

 

[ihaveahax]

dunno if anyone really uses this still, but I decided to fix a few things I broke like 3 months ago and never noticed.

https://github.com/ihaveamac/3dsconv/releases/latest

3.21:

• Fix encrypted CCIs improperly being detected as zerokey encrypted (#8, thanks @putnam)
• Fix bad ncchinfo.bin generation (wrong block size)

oh, and Luma3DS 6.6+ supports zerokey-encrypted titles now (those messing with SDK stuff might like this). have fun!

 

[ihaveahax]

this will be pretty useful again due to recent developments. enjoy!

https://github.com/ihaveamac/3dsconv/releases/latest

4.0:

A major new release, as sighax is now released and anyone can dump the ARM9 bootROM using boot9strap! 3dsconv 4.0 supports reading the bootROM for its encryption keys, allowing for complete offline decryption and conversion. See https://3ds.guide/updating-to-boot9strap on how to update your system to use sighax/boot9strap and how to dump the bootROM.

• Rewrite for Python 3 - 2.x is no longer supported
• Use pyaes instead of PyCrypto[dome]
• bootROM keys support - see README for details on usage
• XORpad support removed
• Rewritten output messages
• Other things I might have forgotten about

 

[FR0ZN]

Thanks for this !!
With the dumped bootrom, any .3ds file can now be converted on a PC in matter of seconds !
MGS 3 for example (a 4GB ROM which results in a 3.3GB CIA) only took like 30 seconds on my slow ass PC w/o a SSD ... got figure

This is definitly the go to tool now for converting 3ds ROMs !

A little GUI to input ROMs from multiple sources and batch converting them afterwards would be nice !

Thx for this @ihaveamac !!

P.S. there is little typo in your script: "Convert Nintedo 3DS CCI"

 

[ihaveahax]

A little GUI to input ROMs from multiple sources and batch converting them afterwards would be nice !

you can already do that by dropping multiple roms on the exe, or adding more as arguments (or something like *.3ds) in a terminal.

 

[easycrashing]

you can already do that by dropping multiple roms on the exe, or adding more as arguments (or something like *.3ds) in a terminal.

thank you

this will be pretty useful again due to recent developments. enjoy!

https://github.com/ihaveamac/3dsconv/releases/latest

4.0:

very helpful, thanks a lot.

what would you suggest to put the cia back as .3ds?

 

[easycrashing]

sorry I meant to edit my post not quote..

 

[ihaveahax]

what would you suggest to put the cia back as .3ds?

don't know but I've never been interested in trying. https://github.com/ihaveamac/3dsconv/issues/7

 

[easycrashing]

don't know but I've never been interested in trying. https://github.com/ihaveamac/3dsconv/issues/7

Thanks, I keep all my backups as decrypted/trimmed .3ds files and convert to cia as needed to play on my .3ds, not for gateway but eventual better emulation on citra.

anywho, still very useful, thanks again.

 

[KomasterXX]

Hi, I was wondering if it is possible to re-convert gba virtual console roms from .cia files to .gba files, for instance, is it possible?

 

[ihaveahax]

Hi, I was wondering if it is possible to re-covert gba virtual console roms from .cia files to .gba files, for instance, is it possible?

extract the cia, then contents. the code in the exefs should be the rom.