Homebrew Question How do you get your sd card encryption seed?

[Domineu]

Does anyone know how to get the console specific sd card encryption seed?

 

[LordVe]

I once read that you search for the Hex Value from the Private file on the SD card in your Decrypted System.bin file. Never got HacTool to accept the result though...

 

[dannidevi]

anyone know how to get the sd card encryption seed to extract nax0 content with hactool?

 

[LordVe]

Obtaining Your SD Seed

1. Open sd:/Nintendo/contents/private in a hex editor.
2. Copy the hex representation of it and put it somewhere for later.
3. Mount your NAND's SYSTEM partition.
4. Open /save/8000000000000043 in a hex editor.
5. Search for the contents of private.

(Taken from Switch SD Dumping 101)

 

[PeterGemp]

anyone know how to get the sd card encryption seed to extract nax0 content with hactool?

Obtaining Your SD Seed

1. Open sd:/Nintendo/contents/private in a hex editor.
2. Copy the hex representation of it and put it somewhere for later.
   
3. Mount your NAND's SYSTEM partition.
   
4. Open /save/8000000000000043 in a hex editor.
   
5. Search for the contents of private.

(Taken from Switch SD Dumping 101)

In necessary detail, since the guide is too god damn vague at the most inconvenient times:

"The hex representation of private", the only line of 16 Bytes in Hex within "private"- aka. "THE CONTENTS OF PRIVATE", for example:

F6 67 A5 9E 8B 62 65 65 AF D5 FF 0D 9E 80 15 8E

THEN open "save\8000000000000043" from your mounted NAND system partition that you dumped beforehand, right?
The search for "the content of "private" " within "save\8000000000000043":
This means nothing else than to look for the hex digit combination from "private" within "save\8000000000000043".
Make sure that you are searching for Hex-values in the search (see open tab in "Find"-search mask, HxD editor).

You then copy the next line that come after your matched search result (=private).

F6 67 A5 9E 8B 62 65 65 AF D5 FF 0D 9E 80 15 8E <= Aforementioned "The hex representation of private", only one line of 16 Bytes in Hex - aka. "THE CONTENTS OF PRIVATE"
A5 6E A5 5E 86 62 35 6D AF D5 F2 0C 9E F0 15 8E <= YOUR SD SEED, the line following "the contents of private"

Lose the spaces and these 16 bytes become your SD Seed: A56EA55E8662356DAFD5F20C9EF0158E

 

[dannidevi]

I got the SD Seed Key, but cannot extract nax0 files from my sd card...
have you tried it? i alway get the error "Error: NAX0 key derivation failed. Check SD card seed and relative path?"

my cmd line:
hactool -tnax0 -k keys.ini --sdseed=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX --sdpath=\registered\00000035\b80967535426154e75f909b3c129c81e.nca 00000035\b80967535426154e75f909b3c129c81e.nca\00 --plaintext=out.nca

edit:
my fault... wrong slashes in sdpath ... must be / not \

 

[PeterGemp]

Thank god. Which games are you trying to dump?

 

[dannidevi]

well, i just thinking about to repack a demo title with another game in it... just testing... :-)

 

[PeterGemp]

well, i just thinking about to repack a demo title with another game in it... just testing... :-)

Alright. But it is good to see that the guide works for other members, too!

 

[tyler004]

so im trying to get this to work but my private key isn`t found in the save \8000000000000043 when searching, anyone know y do I have to dump my nand again