This uses the SMB protocol. When first starting the application it will ask for an username, password, and workgroup name, for accessing the New3DS with from a PC. These settings are then stored in savedata, so that info doesn't need setup each time the application is launched.
Although said to only work with Windows systems, it will work with other OS's if the name of the PC is changed. This is because the app has a hardcoded check for the name of the PC. Why it has this DRM is a mystery.
- "/Mcopy.dat" Filesize is (at least?) 0x68-bytes, contains the stored settings.
|0x0||0x4||u32, unknown. Usually 1?|
|0x4||0x4||u32, unknown. Usually 1?|
|0x8||0x20||char wifi AP SSID|
|0x28||0x10||char SMB device name|
|0x38||0x10||char SMB workgroup name|
|0x48||0x10||char SMB username|
|0x58||0x10||char SMB password|