Savegames

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.

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)

RMAP

• There are generally two RMAP blocks in sequence.

Start	Length	Description
0x00	4	Magic ("RMAP")
0x04	4	Magic Number (0x10000)