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

duckstation is an excellent Playstation 1 emulator by Stenzek. It has a very good compabiility and it is quite performant. It also supports all kinds of enhancements such as high resolution rendering and PGXP which can lessen the "wobble" and...

Editing "new" cmpbin file format for Kirby and the Forgotten Land (Sound file)

Thread starter Auness2
Start date Mar 12, 2022
Views 3,152
Replies 3
Likes 1

Auness2

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Newcomer

Level 1

Mar 12, 2022

Hi, can anyone have a tool for edit "new" cmpbin file? I know the switch toolbox has been updated and supported for this game.
I've try for these file but it didn't support these file.
These are sound files and it's a "cmpbin" file.
Can anyone help? Thanks!

Reactions: Kyusetzu

Kyusetzu

Does Stuff

Member

Level 6

Mar 29, 2022

I'm curious about that as well.
Foobar doesnt support the file format, even with the vgmstream plugin.
Would be awesome to see some kind of converter or player for these files.

Auness2

Member

Newcomer

Level 1

Mar 31, 2022

Kyusetzu said:
I'm curious about that as well.
Foobar doesnt support the file format, even with the vgmstream plugin.
Would be awesome to see some kind of converter or player for these files.

I've found someone shared the extract tool: https://gamebanana.com/questions/25367
But it would be awesome if they have a compress back to cmpbin file.

Reactions: Kyusetzu

Kyusetzu

Does Stuff

Member

Level 6

Apr 2, 2022

Auness2 said:
I've found someone shared the extract tool: https://gamebanana.com/questions/25367
But it would be awesome if they have a compress back to cmpbin file.

Thanks for sharing anyways!