Nintendo File Formats

SMM 2 > Save Data > Later

The page describes the content of the later.dat save data file in Super Mario Maker 2. The filesize is always 0xC000 bytes.

Encryption

Details about the encryption algorithm are described here.

The following integer table is passed to the key generation algorithm:

table = [
    0x1CBC16C1, 0xF468AFCF, 0x6F56A9CD, 0xFF234473,
    0x79D75E19, 0xCE13762E, 0xA7C3B9EC, 0x2DBD57D2,
    0x52B04A8B, 0x91BA89AB, 0x02AA963A, 0x372F4D1C,
    0x0B0DFE6F, 0x10791D7B, 0x48E6ADB2, 0x446B8979,
    0xF6C22D64, 0xA1A850C9, 0x1E0873A7, 0xDF669A3A,
    0xF2444EE4, 0x26B7F6FF, 0x23085C49, 0x724379C3,
    0xB869BE34, 0x235E09DB, 0xAA73EE66, 0x2CC099EE,
    0x5119DD31, 0x2CD16119, 0x3601C35D, 0x48A9B1F9,
    0xFA096C03, 0xD0F8B7F1, 0x8B3DFFEB, 0xBF91B778,
    0x6B6F8E77, 0x51F6D398, 0x2D3FD2EA, 0x553D9AF7,
    0x0C716204, 0x3B2FFD8E, 0x7B185872, 0xBDDA19A5,
    0xC9CED66B, 0xA935CEB5, 0xCA3EBC89, 0xC0EE4C4D,
    0xFFDDA782, 0xCC0C1069, 0x91F3FAC0, 0x5FAFBDF4,
    0xA42FBF7D, 0xAA88D236, 0xE7606B88, 0x71D7FF31,
    0x1022D446, 0xDA78A3DF, 0x596E8949, 0xA1FC82EB,
    0x665D7428, 0x5E9161D3, 0x1C1BDCC7, 0xEEE25BD0
]

File Header

The header is not encrypted.

File Body