Hacking [Tutorial] How to Decrypt 3DS Roms for Dummies

Ryanrocks462

Wii U/3DS Hacker.. Will test anything, A Pirate
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Hi guys!

I will describe an easy method for decrypting 3ds Roms.
IMPORTANT: Must Have a 3ds on Version 4.1-4.5
NEEDED FILES:
1. All Here in Zip file https://mega.co.nz/#!i0UhDRzR!vE1scmiuhRL9sKo6IhgrsbJSxgHZLpqlQIdJyvkIW84
Decrypting the Rom
0. First thing: Get a 3DS Rom... I will be using Mario Kart 7

1. - Drag rom onto ctrKeyGen and you will get a ncchinfo.bin

2. - Place ncchinfo.bin on root of SD Card with the Dumper/Launcher.dat

3. - Run on 3DS(system settings - other settings - profile - nintendo ds profile) and it will generate xorpads... use the Xorpad with the ''RomFS0''.xorpad in the name

4. - Use 3DS explorer and open the Rom/game and click Romfs.bin and save it ''Encrypted''

5. - Rename the Xorpad from CTP-GameID-Romfs0.xorpad to Romfs.xorpad

6. - Put Romfs.bin and Romfs.xorpad inside the 'workdir' folder.

7. - Run the batch file 1-decrypt.bat (just double click)

8. - Run the batch file 2-extract-romfs.bat (just double click)

9. - Complete, Rom fully Decrypted and ripped

Heres a video showing you incase you still need some help :)

 

CollosalPokemon

ばん。。。かい
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Now, if only there was an encryptor that works and lets modified roms be playable on Gateway/GW clones.

It's been publicly possible to re-encrypt modified roms and use them on Gateway for over a month now. MT-Card joined that recently too. The other clones don't have homebrew support so they can't use modified roms, and they probably won't get support for quite a while if ever (at least at this rate).

I showed a PoC on September 4, but it became publicly possible to modify 3ds roms and use them as soon as the decryptor was released (August 29).

What I showed on September 4 is here :
http://gbatemp.net/threads/release-3ds_ctr_decryptor-void.370684/page-32#post-5091989

Since then there have been multiple users who have done modifications to other games. No one has released a 1-click noob tool because...well...I forgot why. I guess anyone capable is too lazy and frankly it's not hard if you understand the CCI format. I was thinking of making a public tool for it until I heard someone else was making one.
 

pLaYeR^^

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Every time i start the 2-extract-romfs.bat i get an error. The 1-decrypt.bat works fine. Somebody know what the problem could be?
Error.JPG
 

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