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This seems to be a new simplified version of the WAD format used on the Wii U. This is used for the vBC/vWIOS and vSystem Menu and maybe in other places.
Structure
Header
| Start | Length | Description |
|---|---|---|
| 0x00 | 4 | Magicbytes 0xEFA282D9 |
| 0x08 | 4 | Entry offset or header size |
Entry info
| Start | Length | Description |
|---|---|---|
| 0x00 | 4 | Signature type |
| 0x04 | 56 | Signature |
| 0x84 | 4 | Unknown, maybe content ID |
| 0x88 | 4 | Unknown, maybe index and flags |
| 0x8C | 4 | Size |
| 0x90 | 14 | SHA1 |
This is followed by encrypted data.