Difference between revisions of "DSiWare Exports"
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The DSiWare exported from a 3DS is located at "[[SD_Filesystem|sdmc]]:/Nintendo 3DS/<ID0>/<ID1>/Nintendo DSiWare". Filenames are same format as [http://dsibrew.org/wiki/Tad DSi]: "<TitleID-Low>.bin". The below sizes include the 0x20-byte block metadata. | The DSiWare exported from a 3DS is located at "[[SD_Filesystem|sdmc]]:/Nintendo 3DS/<ID0>/<ID1>/Nintendo DSiWare". Filenames are same format as [http://dsibrew.org/wiki/Tad DSi]: "<TitleID-Low>.bin". The below sizes include the 0x20-byte block metadata. | ||
| − | DSiWare exported from 3DS use [[Nand/private/movable.sed|keyslots]] initialized by movable.sed. | + | DSiWare exported from 3DS use [[Nand/private/movable.sed|keyslots]] initialized by movable.sed. Each section is encrypted with AES-CBC. |
=Block Metadata= | =Block Metadata= | ||
| Line 16: | Line 16: | ||
| 0x10 | | 0x10 | ||
| 0x10 | | 0x10 | ||
| − | | | + | | IV, generated by the RNG. |
|} | |} | ||
| Line 27: | Line 27: | ||
! Size | ! Size | ||
! Description | ! Description | ||
| − | |||
|- | |- | ||
| 0x0 | | 0x0 | ||
| 0x4020 | | 0x4020 | ||
| Banner section | | Banner section | ||
| − | |||
|- | |- | ||
| 0x4020 | | 0x4020 | ||
| 0xC0 | | 0xC0 | ||
| Header section | | Header section | ||
| − | |||
|- | |- | ||
| 0x40E0 | | 0x40E0 | ||
| 0x420 | | 0x420 | ||
| Footer section | | Footer section | ||
| − | |||
|- | |- | ||
| 0x4500 | | 0x4500 | ||
| | | | ||
| Data for the 4 content sections are stored here. | | Data for the 4 content sections are stored here. | ||
| − | |||
|} | |} | ||
Revision as of 16:50, 22 April 2013
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. Each section is encrypted with AES-CBC.
Block Metadata
| Offset | Size | Description |
|---|---|---|
| 0x0 | 0x10 | AES MAC |
| 0x10 | 0x10 | IV, generated by the RNG. |
Each section begins with the actual encrypted data, followed by this block metadata.
File Structure
| Offset | Size | Description |
|---|---|---|
| 0x0 | 0x4020 | Banner section |
| 0x4020 | 0xC0 | Header section |
| 0x40E0 | 0x420 | Footer section |
| 0x4500 | Data for the 4 content sections are stored here. |
Header
| Offset | Size | Description |
|---|---|---|
| 0x0 | 0x38 | Unknown |
| 0x38 | 0x8 | TWL TitleID for the exported title. |
| 0x40 | 0x60 | ? |
| Offset | Size | Description |
|---|---|---|
| 0x0 | 0xD0 | Hashes? |
| 0xD0 | 0xE0 | Normally all-zero? |
| 0x1B0 | 0x20 | SHA256 hash? |
| 0x1D0 | 0x20 | Normally all-zero? |
| 0x1F0 | 0x3C | ECDSA signature over the previous data, signed by the AP cert? |
| 0x22C | 0x180 | ECDSA "APXXXXXXXXXXXXXXXX" cert signed by the CTCert, where X is random ASCII hex data. |
| 0x3AC | 0x54 | ECDSA certificate, the last 0x14-bytes here are all-zero. |