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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Homebrew WIP GUI for 4NXCI

Thread starter KipperKahn
Start date Jan 11, 2019
Views 3,305
Replies 5
Likes 7

KipperKahn

New Member

Newbie

Level 1

Jan 11, 2019

I am not a programmer and don't really know what i am doing, but I just wanted a simple GUI for 4nxci.
So I downloaded VS2017, watched some videos, read some code sites and decided to gave it a go.
The result is as you see below. Nothing fancy just plain, to the point and works.

Reactions: adev, eyeliner, Ninn and 4 others

Tumoche

Well-Known Member

Member

Level 7

Jan 11, 2019

Link: https://github.com/KipperKahn/4NXCI-GUI

Last edited by Tumoche, Jan 12, 2019

KipperKahn

New Member

Newbie

Level 1

Jan 11, 2019

It wont let me post links because i am a new member.
I put it on github /KipperKahn/4NXCI-GUI

Reactions: Tumoche

Gee19

Active Member

Newcomer

Level 2

Jan 11, 2019

Add an option to set a path to keys.dat. Keep it up, this is exactly how I started programming like 15 years ago

Reactions: Tumoche

spotanjo3

Well-Known Member

Member

Level 17

Jan 11, 2019

KipperKahn said:
I am not a programmer and don't really know what i am doing, but I just wanted a simple GUI for 4nxci.
So I downloaded VS2017, watched some videos, read some code sites and decided to gave it a go.
The result is as you see below. Nothing fancy just plain, to the point and works.

View attachment 154863

Good job. Why not add it for macOS users. I will be happy to test it for you. I am a macOS user. Yes, I have a PC but I just want it to be part of macOS as well.