Need help

[Golem642]

Hi, I would like to ask you how you figured out the code of the nn_nfp module.
I want to make a patch for it (see NFCheckRem) and I've already figured out the 3DS's code and stuff by using Ghidra.

So I just wanted to ask : what tools are you using for this one ? Do you know the exact assembly language that was used to compile the module ?

Thanks

[GaryOderNichts]

nn_nfp is only a high level library which handles parsing the actual Amiibo format, read by the ntag and nfc system libraries.
A lot of the low level NFC handling on the Wii U is done on the Gamepad itself. See https://github.com/devkitPro/wut/blob/b35e595a6e4b69225a8e014046944d9157248513/include/nsysccr/nfc.h for the commands which are sent to the Gamepad.
I'm not entirely sure what you're trying to do, but there's a high change this is handled by the Gamepad firmware which also contains the NFC stack.

[Golem642]

Basically I'm trying to disable the check that is being made on amiibos/NFC tags to see if they are read-only, basically enabling the possibility to have NFC tags that we can infinitely flash any amiibo figure on (because the figure model part would be unlocked) and still work on the Wii U when having the patch enabled

[Golem642]

@GaryOderNichts please ? I'm trying to do this as an ips patch if possible, just like what i did with the 3DS. Do you have any info that i could use with ghidra for reverse engineering ?