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Nintendo DS Cart Whitelist: Difference between revisions

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→NDHT entry: hash1 is definitely something with the main binary
 
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== Description ==
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.
If i remember correctly, HNHA.bin is a file stored in the DSi (NAND fs ?), that contains a list of white listed DS games.


== Basic HNHA.bin File Structure ==
== Format ==
Newer versions of the file contain 3 sections: NDHT, NDHX, and NDHI. Older versions only contain NDHT.


The file consists in one header, a list of Titles and a footer.
=== Header ===
 
Each section starts with a 136 byte header.
=== Header Structure ===
The header is 136 bytes.
{| class="wikitable"
{| class="wikitable"
|- style="background-color: #ddd;"
|- style="background-color: #ddd;"
Line 16: Line 14:
| 0x00
| 0x00
| 4
| 4
| An ID (NDHT)
| Section type (NDHT, NDHX, NDHI)
|-
|-
| 0x04
| 0x04
| 80
| 0x80
| Unknown
| RSA signature of the entire section below this point.
|-
|-
| 0x84
| 0x84
| 4
| 4
| Number of titles in file
| Number of entries
|}
|}


=== Title Structure ===
=== NDHT entry ===
A title is 48 bytes.
NDHT entries correspond to titles and are 48 bytes. The NDHT section is always first.
 
{| class="wikitable"
{| class="wikitable"
|- style="background-color: #ddd;"
|- style="background-color: #ddd;"
Line 37: Line 36:
| 0x00
| 0x00
| 4
| 4
| The title ID
| ROM serial
|-
|-
| 0x04
| 0x04
| 4
| 4
| The title version
| ROM revision
|-
|-
| 0x08
| 0x08
| 20
| 20
| The first SHA-1 sum
| hash1 (HMAC covering parts of the main binary)
|-
|-
| 0x1C
| 0x1C
| 20
| 20
| The second SHA-1 sum
| hash2 (overlay?)
|}
|}


=== Footer Structure ===
=== NDHT footer ===
The footer is 24 bytes.
The NDHT footer is 24 bytes.
{| class="wikitable"
{| class="wikitable"
|- style="background-color: #ddd;"
|- style="background-color: #ddd;"
Line 63: Line 62:
| 24
| 24
| Unknown
| Unknown
|}
=== NDHX entry ===
{| class="wikitable"
|- style="background-color: #ddd;"
! Start
! Length
! Description
|-
| 0x00
| 4
| ROM serial
|-
| 0x04
| 4
| ROM revision
|-
| 0x08
| 20
| hash3
|}
=== NDHI entry ===
{| class="wikitable"
|- style="background-color: #ddd;"
! Start
! Length
! Description
|-
| 0x00
| 4
| ROM serial
|-
| 0x04
| 4
| ROM revision
|-
| 0x08
| 64
| 8 HMAC region struct
{| class="wikitable"
! Start
! Length
! Description
|-
| 0x0
| 4
| Unknown (offset?)
|-
| 0x4
| 4
| Unknown (length?)
|}
|-
| 0x48
| 20
| Expected HMAC
|}
|}
Retrieved from "https://dsibrew.org/wiki/Nintendo_DS_Cart_Whitelist"