DSiWare Exports

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The DSiWare exported from a 3DS is located at "sdmc:/Nintendo 3DS/<ID0>/<ID1>/Nintendo DSiWare". Filenames are same format as DSi: "<TitleID-Low>.bin". The keys/format for these files are completely different from DSi. The below sizes include the 0x20-byte block metadata.

DSiWare exported from 3DS use keyslots initialized by movable.sed.

Block Metadata

Offset Size Description
0x0 0x10 AES MAC
0x10 0x10 CTR for AES-CTR / IV for AES-CBC

Each section begins with the actual encrypted data, followed by this block metadata.

File Structure

Offset Size Description
0x0 0x4020 Banner section encrypted with AES-CBC.
0x4020 0xA0 Header section
0x40C0 0x400 Footer section
0x44C0 Data for the 4 content sections are stored here.