Homebrew Official [Download] Decrypt9 - Open Source Decryption Tools (WIP)

[dark_samus3]

Well I'd need the decrypted NAND to get to the error logs of the 3DS. I got a "broken" 3DS from a friend which crashes to the home menu with an error and reboots after pressing ok when doing certain stuff, sometimes it even crashes randomly.

That's just the CTRNAND partition then, which I believe you can dump (decrypted) using D9

 

[EpicLPer]

That's just the CTRNAND partition then, which I believe you can dump (decrypted) using D9

Ah okay, just saw yes. Thanks, help a lot

But just for the "sake of teaching myself stuff": How would I progress when I already have the XORPAD FAT16 partition and NAND dump? How do I XOR both things?
I've read that I can do it with a HEX editor but that's far beyond my current skills

 

[dark_samus3]

Ah okay, just saw yes. Thanks, help a lot

But just for the "sake of teaching myself stuff": How would I progress when I already have the XORPAD FAT16 partition and NAND dump? How do I XOR both things?
I've read that I can do it with a HEX editor but that's far beyond my current skills

Well if you were doing everything manually (just for the sake of learning how it works) you'd first separate the CTRNAND partition out (you can find the offsets here https://www.3dbrew.org/wiki/Flash_Filesystem) then you'd need to XOR every bit with the XORpad... not sure how to do the XOR with a hex editor (other than manually and I say no thanks to that) but there are several programs out there that will XOR 2 files for you, after doing that you should have a decrypted partition and be good to edit it... once done then you can just use the XORpad again to encrypt it exactly the same way you decrypted it, then inject it back into the full NAND image and pray it works lol

 

[Shadowtrance]

Ah okay, just saw yes. Thanks, help a lot

But just for the "sake of teaching myself stuff": How would I progress when I already have the XORPAD FAT16 partition and NAND dump? How do I XOR both things?
I've read that I can do it with a HEX editor but that's far beyond my current skills

For the sake of doing things manually have a look at @d0k3's program 3DSFAT16Tool https://github.com/d0k3/3DSFAT16tool
Quite handy for manually extracting with the xorpad method.

 

[baesup]

https://github.com/LinkeneitoR/Decrypt9/releases
It Supports Multi-nand

 

[d0k3]

https://github.com/LinkeneitoR/Decrypt9/releases
It Supports Multi-nand

Nice! But I guess I will leave that out of the main build. The menu is confusing enough for users as it is, plus that many new options will mean a lot more maintenance.

 

[Krude]

Nice! But I guess I will leave that out of the main build. The menu is confusing enough for users as it is, plus that many new options will mean a lot more maintenance.

Can you check for # of emuNANDs on the current SD? If so, just implement an additional screen inbetween hitting the "EmuNAND Options" and displaying the actual options, where you specify wthat all the following operations are done on emuNAND #x.

Like go from "Main screen" -> "Choose which EmuNAND" -> "EmuNAND options"


edit: also just skip the selection screen if only one emuNAND is detected

 

[d0k3]

Can you check for # of emuNANDs on the current SD? If so, just implement an additional screen inbetween hitting the "EmuNAND Options" and displaying the actual options, where you specify wthat all the following operations are done on emuNAND #x.

Like go from "Main screen" -> "Choose which EmuNAND" -> "EmuNAND options"


edit: also just skip the selection screen if only one emuNAND is detected

That doesn't make it any simpler. Maybe more userfriendly though. Also not many people are actually using a Multi EmuNAND Setup, and even less people use a Multi EmuNAND Setup and use Decrypt9.

Maybe @baesup will consider it, though?

 

[baesup]

OK. I will find a way to make it easy

 

[sumirecccp]

Hello。
When use D9 to De/Encrypt(NCCH,SD-emunand) a 3ds game (CDNto3DS, SDto3DS) with seed encryption, the game manual will cannot be access,or be missing（show the message game card is ejected.） but the game can be played normally.

I use D9's SD Decryption(emunand) and Sdto3DS to build the game. and D9's NCCH De/Encrypt to remove the seed encryption.

And a game without seed encryption won't have this bug.
@d0k3

 

[Urbanshadow]

Is D9 Launcher.dat any different from EMT9 Launcher.dat? Can I run both with the same file?

 

[Shadowtrance]

Is D9 Launcher.dat any different from EMT9 Launcher.dat? Can I run both with the same file?

Of course it's different, they both run different payloads.
So no, you can't run both Launcher.dat versions at the same time.

 

[Urbanshadow]

Of course it's different, they both run different payloads.
So no, you can't run both Launcher.dat versions at the same time.

I thought so, but they were equal in size and then the doubt arised. Well thanks.

 

[Shadowtrance]

I thought so, but they were equal in size and then the doubt arised. Well thanks.

Ah yeah i can see why you asked i guess.
You can use the other .dat versions at the same time though, Emunand9WIP / UI .dat, Decrypt9WIP / UI .dat. (Can be used from MSET and browser(old 3ds only)).
To be honest i think it's time the Launcher.dat version was removed.

 

[d0k3]

Hello。
When use D9 to De/Encrypt(NCCH,SD-emunand) a 3ds game (CDNto3DS, SDto3DS) with seed encryption, the game manual will cannot be access,or be missing（show the message game card is ejected.） but the game can be played normally.

I use D9's SD Decryption(emunand) and Sdto3DS to build the game. and D9's NCCH De/Encrypt to remove the seed encryption.

And a game without seed encryption won't have this bug.
@d0k3

Let me guess, you are a GW owner, right? The problem your describing only happens on GW, in CFW there is no problem such as this, all CFWs since Pasta do it right. I suggest you write an email to the GW support and nag them to finally implement signature patching for all contents and not just the CXI. Not like you would be the first to ask them.

I thought so, but they were equal in size and then the doubt arised. Well thanks.

They are equal in size because they use the same base file, and the actual ARM9 payload is injected into it.

 

[urherenow]

can one of them be renamed and launched with ctrbootmanager?

 

[d0k3]

can one of them be renamed and launched with ctrbootmanager?

Why would you want to use the Decrypt9 Launcher.dat with CTR Boot Manager? You should use either Decrypt9.bin (offset 0x0) or Decrypt9.dat (offset 0x12000) with that.

 

[Shadowtrance]

can one of them be renamed and launched with ctrbootmanager?

One of what be renamed? The .dat files?
You can run E9 / D9 from ctrbootmanager with the 3dsx versions (i do) haven't tried the .dat versions.

 

[urherenow]

I dunno why you would want to... I was brainstorming to simply answer the question from @Urbanshadow .

But I have a question of my own... why the H. E. hocky sticks, do so many people insist on using -shadow- in their user name? No imagination?

 

[Cha0s Em3rald]

@d0k3 (or anyone else who knows the answer) Once a eshop rom has been cryptofixed with D9 is there a way to remove the CF & get it back to a regular rom?