IDBE

IDBE is Nintendo's title icon database. Entries contain title icon, region, and name (in various languages). All game titles are on the server (excluding DSiWare?), including demos and updates.

URLs

https://idbe-ctr.cdn.nintendo.net/icondata/%02X/%016llX.idbe

https://idbe-ctr.cdn.nintendo.net/icondata/%02X/%016llX-%d.idbe

%02X seems to always be 0x10 (?)

%016llX is the title id.

%d is an optional title version.

Encryption

The icon database is encrypted with AES-128 CBC. All icons use the same IV and one of 4 possible keys (as specified by the key index in the header).

The IV/keys are likely hardcoded on the 3DS, but not sure where. They are also on the WiiU.

Data

Offset	Size	Description
0x0	0x1	? (usually zero)
0x1	0x1	Key index
0x2	0x36D0	Encrypted data

Encrypted Data

Icon data is uncompressed RGB565.

Offset	Size	Description
0x0	0x20	SHA256 hash
0x20	0x10	?
0x30	0x4	Region bit flags (u32 little endian)
0x34	0x1C	?
0x50 + i * 0x200	0x200	Language chunk where i = language index
0x2050	0x480	24x24 Icon data
0x24D0	0x1200	48x48 Icon data

Language Chunk

Data in these chunks use UTF-16 encoding.

Offset	Size	Description
0x0	0x80	Short title
0x80	0x100	Long title
0x180	0x80	Publisher