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 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. |