NAX0 archive (Nintendo Switch)

NAX0 archive

16 KB header
32 bytes: hash or signature?
NAX0 +0x00000000 magic
32 bytes sha-1 hash of plaintext data?
8 bytes for data filesize in little endian format
0x00 sea normally
encrypted data


Filesize example (Snipperclips demo)
Contents\registered\00000019\a0abea94f6d83dcd803aed8bdc229287.nca\00 (41.4 MB)

litle endian: 00 68 97 02
big endian swap: 02 97 68 00
decimal: 43476992 bytes (41.4 MB)


save\
The save data archives for 8000000000000000 and 8000000000000124 work the same way. Though, the data portion is weird. Unlike the Contents\registered\ data, the entire data blob is not encrypted, only parts. Leaving a sea of 0x00, and small islands of encrypted data for whatever reason.


Random data in NAX0 archive header
The first 128 bytes seems to be "clean", but afterwards there can be random data where there is normally just 0x00 padding.