ACT Services

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The ACT module handles NNID accounts.

ACT service "act:a"

ACT service "act:u"

Command Header Available since system-version Description
0x00010084 Initialize? cmd[1] = u32 ctrsdkversion_probably, cmd[2] = unknown, cmd[3] = 0x20(kernel PID header), cmd[4] = PID value written by kernel, cmd[5] = 0x0(handle-transfer header for kernel), cmd[6] = handle value.
0x00020040 Unknown
0x000600C2 GetAccountDataBlock

This is the service used by regular applications.

HTTPS Requests

Trusted Root CAs

ACT module uses a RootCertChain for all HTTPS requests, the only trusted root CA is default CertID 0x3.

New3DS

Even though ACT-sysmodule uses ptm:s, it doesn't use CheckNew3DS at all. It's unknown how this sysmodule determines whether to use "CTR"/"KTR" for a request-header value for HTTPS requests.