ROM Hack 3DS decryptor using rom??

[drjack76]

I have a good .3ds file for KH DDD. It cant run in citra because its encrypted. I no longer have a 3ds.
Is there a utility to decrypt that .3ds file on my computer? (windows or mac will do)

 

[SANNIC789]

no but you can use 3ds lazy and downlod the xorpads online

 

[drjack76]

I tried that. I got the right xorpads and the decrypt was succesful but when i rebuilt the rom, it was still encrypted.
Any specific instruction im missing?