ROM Hack [Release] 3DS_CTR_Decryptor-VOiD

[Vappy]

It's linked to on the first post, but here you go http://gbatemp.net/threads/release-3ds_ctr_decryptor-void.370684/page-24#post-5089267

 

[NCDyson]

ah, I hadn't seen the first page was updated. Perhaps then you already have the refactored version. If that's the case, how big is the rom you're trying to decrypt? the romfs from Project X Zone I decrypted yesterday only took like 5 minutes, and was like 475mb

 

[Canzah]

Yep, that's the one I'm using and I'm decrypting Japanese version of SMT4 (2GB).
It's been going for an hour now and it's only not at half...

Shut down my 3DS, removed the card, deleted the data it already created and started it over again.
Not even minute passed and it's already at 10%.
I guess something went wrong earlier.

 

[windwakr]

Yep, that's the one I'm using and I'm decrypting Japanese version of SMT4 (2GB).
It's been going for an hour now and it's only not at half...

Something's not right there. I've done a game with a 2GB romfs in like 30 minutes.

Maybe your SD is too slow.

 

[Canzah]

Kingston MicroSDHC 16GB, Class 10. In a SD adapter. It's definitely not the card besides now it's going well.
Okay, got myself the xorpad files, how do I go about opening them now exactly? ctrtool? Do I need to specify parameters or is just -x enough?

 

[Duo8]

Kingston MicroSDHC 16GB, Class 10. In a SD adapter. It's definitely not the card besides now it's going well.
Okay, got myself the xorpad files, how do I go about opening them now exactly? ctrtool? Do I need to specify parameters or is just -x enough?

Xor it with the rom first. Then use ctrtool to extract romfs.

 

[octopus]

Has anyone messed with the genesis 3d classics vc to see if it's an emulator?

It is. But it appears to be a bit more than that.

 

[Canzah]

Somebody please give me a step by step tutorial since I can't comprehend this.
I used ctrKeyGen to generate ncchinfo.info which I then used to generate xorpad files on my 3DS with Gateway.
Then what do I do with those files? People keep throwing around terms "just xor it" as if I already know what it means.
I have no bloody idea what does it mean and I've been fighting with these tools for past few hours trying to figure it out and I just can't wrap my head around this XOR thing.
So please someone give me step by step intructions what do I do after getting the xorpad files.

 

[Huntereb]

Somebody please give me a step by step tutorial since I can't comprehend this.
I used ctrKeyGen to generate ncchinfo.info which I then used to generate xorpad files on my 3DS with Gateway.
Then what do I do with those files? People keep throwing around terms "just xor it" as if I already know what it means.
I have no bloody idea what does it mean and I've been fighting with these tools for past few hours trying to figure it out and I just can't wrap my head around this XOR thing.
So please someone give me step by step intructions what do I do after getting the xorpad files.

This guide here is pretty nice.

 

[Canzah]

Thanks, that helped me immensely, turns out I was doing everything properly just didn't realize the .xor output from 3DSExplorer was my decrypted file just with changed extension.

Is there any way at all to re-encrypt roms right now?
You mentioned earlier that an "easier" way of encrypting with 0 key will come soon, which made me wonder if a harder way exists now.

 

[kyogre123]

Thanks, that helped me immensely, turns out I was doing everything properly just didn't realize the .xor output from 3DSExplorer was my decrypted file just with changed extension.

Is there any way at all to re-encrypt roms right now?
You mentioned earlier that an "easier" way of encrypting with 0 key will come soon, which made me wonder if a harder way exists now.

Yes. It involes hexediting everything and reading about hashes. All the information is dispersed in this thread.

 

[Canzah]

I see, well I guess I'll read the thread in chunks over time then.
Well, read the thread.
Seems like it's indeed hell to repack RomFS right now.
Anxiously awaiting CompCom's tool.

On a side note, is there any way to unpack the banner/icon/logo.bin files from ExeFS yet?

Also, I take it there's no way to currently decrypt 7.x and 8.x games?

 

[Osmos]

 

[Relys]

Just got an email stating issue 19 (romfs generation) was closed!

https://github.com/3DSGuy/Project_CTR/issues/19

Anyone want to compile the new source? ( I would but I'm currently on mobile)

 

[piratesephiroth]

Just got an email stating issue 19 (romfs generation) was closed!

https://github.com/3DSGuy/Project_CTR/issues/19

Anyone want to compile the new source? ( I would but I'm currently on mobile)

http://gbatemp.net/threads/release-romfs-generator.371770/#post-5107673

 

[einstein95]

Okay, I've managed to recompile a ROM, but I get the same "An error has occurred" as was posted a bit back. Now, I don't want to hear "My program can do that but I haven't released it because it's not ready yet" because that just sounds like an empty promise and I can't give two sh*ts about that tbh. Now, can someone either explain how I can fix this error, or provide a way of replacing files in a ROM without having to recompile it as I am sick of people saying "read the previous posts" or "we can do it but you can't".

 

[overlord00]

Okay, I've managed to recompile a ROM, but I get the same "An error has occurred" as was posted a bit back. Now, I don't want to hear "My program can do that but I haven't released it because it's not ready yet" because that just sounds like an empty promise and I can't give two sh*ts about that tbh. Now, can someone either explain how I can fix this error, or provide a way of replacing files in a ROM without having to recompile it as I am sick of people saying "read the previous posts" or "we can do it but you can't".

My "solution" was to build as CARD2 instead of CARD1

 

[einstein95]

My "solution" was to build as CARD2 instead of CARD1

An alternative solution is to replace the "Writable Address" offset at 0x200 with the one from the original dump.

 

[overlord00]

An alternative solution is to replace the "Writable Address" offset at 0x200 with the one from the original dump.

thanks for the heads up

 

[einstein95]

thanks for the heads up

Should also say that if the compiled version uses more bytes, you should edit this to be hex(total size/512) instead of the original version's