Hacking how does sky3ds detects unofficial roms?

Deleted User · Nov 25, 2015

any flag bit? maybe we can just make it think that our *.3ds homebrew is official to run it.

SomeGamer · Nov 25, 2015

natanelho said:
any flag bit? maybe we can just make it think that our *.3ds homebrew is official to run it.

The 3DS detects it.

--------------------- MERGED ---------------------------

We can't sign 3ds files. If you're in CFW, you can run it.

d0k3 · Nov 25, 2015

natanelho said:
any flag bit? maybe we can just make it think that our *.3ds homebrew is official to run it.

Think Sky3DS would really want to block homebrew? So that they cannot use this in their advertisements?

ayanekochan · Nov 25, 2015

The writer for sky3ds won't accept roms that aren't listed in the linked template file, although I suppose you can build a .3ds that reads like an existing game to get sky to accept it... Not sure if that would accomplish much of anything

RaMon90 · Nov 25, 2015

What do you mean? Running .3ds via homebrew?

Tony_93 · Nov 25, 2015

ayanekochan said:
The writer for sky3ds won't accept roms that aren't listed in the linked template file, although I suppose you can build a .3ds that reads like an existing game to get sky to accept it... Not sure if that would accomplish much of anything

You would achieve nothing, the Sky3ds basically emulates a cartridge, takes the encrypted rom and transfer the information to the 3DS as a normal game would, all the checks are done by the 3DS itself, if you write unsigned .3ds files in a Sky3ds the 3DS would still refuse to read them.

Deleted User · Nov 25, 2015

Tony_93 said:
You would achieve nothing, the Sky3ds basically emulates a cartridge, takes the encrypted to rom and transfer the information to the 3DS as a normal game would, all the checks are done by the 3DS itself, if you write unsigned .3ds files in a Sky3ds the 3DS would still refuse to read them.

whats signed? is there any way to sign the things ourselves?

Monty Kensicle · Nov 25, 2015

natanelho said:
whats signed? is there any way to sign the things ourselves?

Nope, if we could do that there'd be no point in Sky3DS even existing. All 3DS software is encrypted/digitally signed by Nintendo with a decryption key unique to each 3DS console.

Deleted User · Nov 25, 2015

Monty Kensicle said:
Nope, if we could do that there'd be no point in Sky3DS even existing. All 3DS software is encrypted/digitally signed by Nintendo with a decryption key unique to each 3DS console.

? what? please explain me...

Monty Kensicle · Nov 25, 2015

natanelho said:
? what? please explain me...

Which part? The digital signatures?

If we could sign our own software then it would appear as legitimate to the 3DS from the get-go and why would anyone buy a Sky3DS or Gateway when all they have to do is patch a few files and stick them on an SD card?

As far as I know, 3Ds software is encrypted with a special key known only by Nintendo, and every 3DS has the key to unlock said software and then it's own encryption for downloadable content. Which is why you can't just copy a friend's SD card and use their games on your unit.

Quantumcat · Nov 25, 2015

https://en.m.wikipedia.org/wiki/Digital_signature

Deleted User · Nov 25, 2015

wait that mean that 3ds files are un-encripted and the sky does the work of convincig the console that the file is a real cart? genious! didnt thought that sky does that... also that means that sky team cracked the autorization algoritm?

BTW there is no point in ANY flash cart when ya have a CFW-able console, in which case you just install CIAs.

Quantumcat · Nov 25, 2015

natanelho said:
wait that mean that 3ds files are un-encripted and the sky does the work of convincig the console that the file is a real cart? genious! didnt thought that sky does that... also that means that sky team cracked the autorization algoritm?

BTW there is no point in ANY flash cart when ya have a CFW-able console, in which case you just install CIAs.

No, they are encrypted. The template makes it look (to the 3DS) like they are being read from a cartridge. It is the reason you can't modify a rom for use with Sky3DS because that will break the encryption. They have to be pure dumps.

Deleted-19228 · Nov 25, 2015

I feel like my IQ dropped reading this thread.

Tony_93 · Nov 26, 2015

Neptune said:
I feel like my IQ dropped reading this thread.

He has no idea how this things work but there is no reason to be mean, comments like this serve no purpose.

Penny Morecash · Nov 26, 2015

If you are on 9.2 or below, can generate the key for the template file and have two simple patches in the arm9 code then yes you can use e-shop games on Sky3DS.
Patch 1. remove Sig check
Patch 2. make sure it asks for encryption from the cartridge (reverse of what Gateway does).

aos10 · Nov 26, 2015

i found a version of Pokemon Neo Y and Neo X on that iso site that work with sky3DS
i don't know how they did it

Misledz · Nov 26, 2015

aos10 said:
i found a version of Pokemon Neo Y and Neo X on that iso site that work with sky3DS
i don't know how they did it

Its probably HANS. There's no way to burn it onto a Sky3DS

aos10 · Nov 26, 2015

Misledz said:
Its probably HANS. There's no way to burn it onto a Sky3DS

it's .3DS version
around 2GB file size just like the normal size of the game

Misledz · Nov 26, 2015

aos10 said:
it's .3DS version
around 2GB file size just like the normal size of the game

Even if they did, the mystery byte and everything is different and only sky people know to make it. The SHA1 won't even match

Also the ROM you're talking about was taken down and debunked

Hacking how does sky3ds detects unofficial roms?

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