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...

Hacking Question Can you boot in to RCM on a new Switch

Thread starter Deleted User
Start date Dec 17, 2018
Views 3,182
Replies 7

Deleted User

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Dec 17, 2018

title. I don't mind taking the switch apart if needed

cyndor

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Dec 17, 2018

https://gbatemp.net/threads/switch-...he-first-post-before-asking-questions.481215/

Kubas_inko

"Something funny goes here."

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Dec 17, 2018

Yes, you can. But you can't do anything in it.

ZachyCatGames

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Level 14

Dec 17, 2018

Kubas_inko said:
Yes, you can. But you can't do anything in it.

Unless you have a signed payload

FTRBND

Waifu

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Level 4

Dec 19, 2018

ZachyCatGames said:
Unless you have a signed payload

and afaik there is no way to sign custom payloads

TerraPhantm

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Dec 19, 2018

FTRBND said:
and afaik there is no way to sign custom payloads

Well Nintendo and/or nVidia can.

Last edited by TerraPhantm, Dec 19, 2018

ZachyCatGames

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Dec 19, 2018

FTRBND said:
and afaik there is no way to sign custom payloads

~~just break into nvidia/Nintendo and steal the private key /s~~

SCOTT0852

shiny rubber creature

Member

Level 7

Dec 19, 2018

Can you boot into RCM? Yes.
Can you actually load any payloads? No.

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Hacking Question Can you boot in to RCM on a new Switch

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"Something funny goes here."

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