Difference between revisions of "Nintendo DS Cart Whitelist"

Latest revision as of 03:02, 26 September 2022

The Nintendo DS Cart Whitelist is a system title (HNHA / 0003000f484e4841) on DSi and 3DS TWL_MODE that contains a list of whitelisted DS carts. Other carts can be loaded if they have a valid RSA signature, which is how newer DS games load on DSi systems.

Format

Newer versions of the file contain 3 sections: NDHT, NDHX, and NDHI. Older versions only contain NDHT.

Header

Each section starts with a 136 byte header.

Start	Length	Description
0x00	4	Section type (NDHT, NDHX, NDHI)
0x04	0x80	RSA signature of the entire section below this point.
0x84	4	Number of entries

NDHT entry

NDHT entries correspond to titles and are 48 bytes. The NDHT section is always first.

Start	Length	Description
0x00	4	ROM serial
0x04	4	ROM revision
0x08	20	hash1 (HMAC covering parts of the main binary)
0x1C	20	hash2 (overlay?)

NDHT footer

The NDHT footer is 24 bytes.

Start	Length	Description
0x00	24	Unknown

NDHX entry

Start	Length	Description
0x00	4	ROM serial
0x04	4	ROM revision
0x08	20	hash3

NDHI entry

Start

Length

Description

0x00

4

ROM serial

0x04

4

ROM revision

0x08

64

8 HMAC region struct

Start	Length	Description
0x0	4	Unknown (offset?)
0x4	4	Unknown (length?)

0x48

20

Expected HMAC

@@ Line 44: / Line 44: @@
 | 0x08
 | 20
-| hash1 (main binary?)
+| hash1 (HMAC covering parts of the main binary)
 |-
 | 0x1C
@@ Line 101: / Line 101: @@
 | 0x08
 | 64
-| HMAC region struct
+| 8 HMAC region struct
 {| class="wikitable"