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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ROM Hack Translation List of addresses with text in Clannad

Thread starter Kikazaka1352
Start date Apr 12, 2024
Views 419
Replies 3

Kikazaka1352

New Member

Newbie

Level 1

Apr 12, 2024

Hi everyone, I am translating Clannad into Russian.
To translate the text in the main file, I decided to create an ips patch.
In the process of working, I came across a text that looks like a list of addresses is being created to work with.

While I was working with the emulator, I was able to redefine the addresses in ips patches and there were no problems, but when I decided to check on a real console, I remembered that the address in memory changes every time I start.
Can anyone tell me what to do about it?

Kikazaka1352

New Member

Newbie

Level 1

Apr 13, 2024

The topic is closed, the problem is solved.

mathew77

Lovin' life.

Member

Level 13

Apr 13, 2024

Kikazaka1352 said:
the problem is solved.

Maybe you can explain a bit how your problem has been solved.

masagrator

The patches guy

Developer

Level 22

Apr 14, 2024

Their approach was completely wrong.

If you want to patch strings with IPS, you patch strings.
If you want to patch static pointers with IPS, you patch offsets in .rel.dyn, not addresses in .data, because game must update addresses to be ASLR compliant. And for that .rel.dyn is used to calculate correct address and then calculated address overwrites static pointers in .data

Last edited by masagrator, Apr 14, 2024