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.

duckstation for Switch

catlover007 · 2024-04-22T04:06:40+00:00

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How to extract files from global-metadata.dat file?

Thread starter Gemeos09
Start date May 16, 2023
Views 3,221
Replies 2

Gemeos09

New Member

Newbie

Level 1

May 16, 2023

I'm trying to translate the game Bear and breakfast, extract the files from nsp with yuzu and now I'm trying to extract the files from global-metadata.dat, but I don't know how to do it

masagrator

The patches guy

Developer

Level 22

May 17, 2023

global_metadata.dat doesn't have any files. It's loaded by executable for strings and other functions data.

You can extract data with il2cppdumper, but it won't help you with bringing them back to global-metadata as it's used for reverse engineering purpose purely.
It is very rare that global-metadata contains translations because it shows they put texts into source code itself. Which is a stupid practice.

Impossible_Igntiz

Well-Known Member

Member

Level 7

Jun 26, 2023

Gemeos09 said:
I'm trying to translate the game Bear and breakfast, extract the files from nsp with yuzu and now I'm trying to extract the files from global-metadata.dat, but I don't know how to do it

You'll need something like Assetripper for extracting the streaming assets files and then DevXUnity for inserting edited textures, text files, etc...