This page describes the format of savegames contained in NAND.
AES CMAC header
| Image offset | Length | Description |
|---|---|---|
| 0x00 | 0x10 | AES-CMAC |
| 0x10 | 0xF0 | Zero padding |
DISF
- This is located @ 0x100 in the image, following the CMAC header.
| Start | Length | Description |
|---|---|---|
| 0x000 | 4 | Magic ("DISF") |
| 0x004 | 4 | Magic Number (0x40000) |
| 0x008 | 32 | Hash |
| 0x028 | 8 | Primary Partition Table Offset |
| 0x030 | 8 | Primary Partition Table Size |
| 0x038 | 8 | Secondary Partition Table Offset |
| 0x040 | 8 | Secondary Partition Table Size |
| 0x048 | 8 | Save Partition Offset |
| 0x050 | 8 | Save Partition Size |
| 0x258 | End |
DPFS
- This is located @ 0x200 in the image, following DISF.
- Block sizes are log2
| Start | Length | Description |
|---|---|---|
| 0x00 | 4 | Magic ("DPFS") |
| 0x04 | 4 | Magic Number (0x10000) |
| 0x08 | 8 | Offset 0 |
| 0x10 | 8 | Size 0 |
| 0x18 | 8 | Block Size 0 |
| 0x20 | 8 | Offset 1 |
| 0x28 | 8 | Size 1 |
| 0x30 | 8 | Block Size 1 |
| 0x38 | 8 | Offset 2 |
| 0x40 | 8 | Size 2 |
| 0x48 | 8 | Block Size 2 |
IVFC
- Generally follows DPFS, similar to 3DS.
| Start | Length | Description |
|---|---|---|
| 0x00 | 4 | Magic ("IVFC") |
| 0x04 | 4 | Magic Number (0x20000) |
| 0x08 | 8 | Master hash size? |
| 0x10 | 8 | Level 1 offset |
| 0x18 | 8 | Level 1 size |
| 0x20 | 4 | Level 1 block size, in log2 |
| 0x24 | 4 | Reserved |
| 0x28 | 8 | Level 2 offset |
| 0x30 | 8 | Level 2 size |
| 0x38 | 4 | Level 2 block size, in log2. |
| 0x3C | 4 | Reserved |
| 0x40 | 8 | Level 3 offset |
| 0x48 | 8 | Level 3 size |
| 0x50 | 4 | Level 3 block size, in log2. |
| 0x54 | 4 | Reserved |
| 0x58 | 8 | Level 4 offset |
| 0x60 | 8 | Level 4 size |
| 0x68 | 4 | Level 4 block size, in log2. |
| 0x6C | 4 | Reserved |
| 0x70 | 48 | Unknown, reserved? |
| 0xA0 | 32 | Hash |
JNGL
- Generally follows IVFC
| Start | Length | Description |
|---|---|---|
| 0x00 | 4 | Magic ("JNGL") |
| 0x04 | 4 | Magic Number (0x10000) |
| 0x08 | 8 | Savedata Size |
| 0x10 | 8 | Unknown, Size |
| 0x18 | 8 | Savedata Blocksize? |
| 0x20 | 4 | Unknown |
| 0x24 | 4 | Unknown |
| 0x28 | 8 | Unknown |
| 0x30 | 464 | Padding? |
SAVE
- Generally follows JNGL, structure is different from 3DS.
| Start | Length | Description |
|---|---|---|
| 0x00 | 4 | Magic ("SAVE") |
| 0x04 | 4 | Magic Number (0x60000) |
| 0x08 | 8 | Unknown, number |
| 0x10 | 8 | Unknown, block size |
| 0x18 | 8 | Unknown, block size |
| 0x20 | 8 | Unknown |
RMAP
- There are generally two RMAP blocks in sequence.
| Start | Length | Description |
|---|---|---|
| 0x00 | 4 | Magic ("RMAP") |
| 0x04 | 4 | Magic Number (0x10000) |