Hello guys, this is my first post here! I just got a MIG Switch card out of curiosity and I was tinkering with it. For those who don't know, it's used by placing XCI dumps as well as other game specific bin files in the sd card of the MIG Switch, and are obtained from the original cartridge by using an app like nxdumptool. Two of these bin files are mandatory to get the game to boot: Initial Data.bin and Certificate.bin. They stay the same for every cartridge of a specific game. Now, if you want to use an XCI dump from a shady website it's impossible to get it to work without those files. By using the Certificate.bin from another game it has no problem, but this does not count for the Initial Data.bin. So I looked for a way to obtain this Initial Data from an XCI file and read a bit of the XCI file documentation from switchbrew dot org. Here's what I understood so far: The Switch checks if the cartridge is valid by doing a challenge–response authentication on the Initial Data. The Package ID is contained both on the XCI and the Initial Data, on positions 0x110 and 0x0 respectively. The Initial Data hash is on the XCI at position 0x160. It is calculated by doing a SHA-256 hash on the full Initial Data content. So I was wondering, is there a way to to construct a functional Initial Data file starting from an XCI dump? I also tried a reverse approach by editing the Package ID in the Initial Data from another game, generating the Initial Data hash and putting it in the XCI file but is not enough to get the Switch believe it's a real game. Sorry if this may seem stupid but let me know what you think.

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Hacking Question regarding User Account Pulling from Emummc

Thread starter Kokumotsu
Start date Dec 1, 2019
Views 944
Replies 3

Kokumotsu

Well-Known Member

Newcomer

Level 2

Dec 1, 2019

So i just setup Emummc on my switch and am in the middle of setting up my sysnand but i have an issue. My roommates user profile was not made at the time of my nand backup and i am unable to inject her save data from emummc to sysnand. Ive tried recreating her profile and injecting the saves and while it works on my profile because it was made at the time, hers just crashes the game.
Does anyone know where the User profile is store on the system so i can inject it into the sysnand?

Kokumotsu

Well-Known Member

Newcomer

Level 2

Dec 3, 2019

Bumping

210modz

Well-Known Member

Member

Level 6

Dec 3, 2019

You have to use hacdiscmount. It's in system/save/8000000000000010. I've manually done it a few times. What are you using to inject the saves. Using a different profile shouldn't matter.

Kokumotsu

Well-Known Member

Newcomer

Level 2

Dec 3, 2019

Im manually injecting them in with hacdisc with my sysnand mounted

*Edit
Okay so that helped get my profiles transfered now i just gotta find the save for MHGU

Last edited by Kokumotsu, Dec 3, 2019