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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Hacking Confused about Masterkeys

Thread starter NeroAngelo
Start date Apr 22, 2019
Views 4,964
Replies 6

NeroAngelo

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Level 7

Apr 22, 2019

Just finished upgrading my Switch to 8.00, but the new Lockpick_RCM didn't generate a 08 masterkey.
should it? or does 8.00 just use 07 masterkey??

Hayato213

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Level 28

Apr 22, 2019

For 8.0.0 it is master key 7.

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NeroAngelo

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Apr 22, 2019

thanks pal, nearly had a panic attack

Hayato213

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Level 28

Apr 22, 2019

NeroAngelo said:
thanks pal, nearly had a panic attack

You are welcome, you can look at this for reference, only when the key for specific firmwares change the key set change.

Last edited by Hayato213, Apr 22, 2019

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re.lax

Well-Known Member

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Level 7

Apr 22, 2019

unless its the same key as 7.0.0 - 7.0.1 then itll be master_key_08
* Keygen 1 (1.0.0 - 2.3.0) - master_key_00
* Keygen 2 (3.0.0) - master_key_01
* Keygen 3 (3.0.1 - 3.0.2) - master_key_02
* Keygen 4 (4.0.0 - 4.1.0) - master_key_03
* Keygen 5 (5.0.0 - 5.1.0) - master_key_04
* Keygen 6 (6.0.0 - 6.1.0) - master_key_05
* Keygen 7 (6.2.0) - master_key_06
* Keygen 8 (7.0.0 - 8.0.0) - master_key_07 - edited

Last edited by re.lax, Apr 22, 2019

Reactions: Hayato213