Homebrew Question Anyone good at hactoolnet for NAND save data extracting? pls help!

reinaldox_ · Mar 26, 2019

Hey guys. this thing is driving me crazy. i lost an emunand partition because it got corrupted after an update. i managed to get into the hacdiskmount and extract the save files from the user partition.

the thing is....a guys posted a tool using an old version of hactoolnet to extract the checkpoint/edizon save files from the RAW save file but!.... is not working at all for me. it hiving me a lot of error inside de command window and is not giving me any output file. here a picture

pd: i dont know if the "saveMETA" folder is useful, but hacdiskmount is not letting me copy and paste that folder outside.
pd: this are my save files packed into a rar if you can help me http://www.mediafire.com/file/c12qtbzabg7smbc/save.rar/file

i would like to know how to use hactoolnet but there is no tutorial for dummies

F4mouZSt4r · Mar 26, 2019

Do you have the switch keys in "$HOME/.switch/"?
If not load the keys manually with '-k <keyfile>'

GothicIII · Mar 26, 2019

I don't get it. With hacdiskmount he already got the decrypted save file. If I understood this correctly then all he has to do is run his game on a fresh nand and make a save. Then look what kind of file is created and replace it with that he extracted.
So Game A creates save 0[0]1A and his extracted save is 0[0]42 then he renames his 0[0]42 backup to 0[0]1A and replaces it on the new nand.
The save should load or not? EDIT: => Yes this works, too.

EDIT: The only save I was able to extract was 0[0]34. Either the saves are corrupted or it is indeed a programming error.

@reinaldox_ :

I am very sorry to say this but your saves are beside 0[0]34 completely broken. From all files you provided only 0[0]34 is valid.
0[0]3c 0[0]3d 0[0]3e 0[0]3f 0[0]40 0[0]41 0[0]42 are completly empty (no data).
0[0]37 0[0]39 has only garbage data and no header.
0[0]38 seems it has a valid header but the data is probably broken beyond repair.

I validated my acclaims through my own save files. Every single one I managed to extract without errors and they all have a header . I am on SX OS 6.2.0. It is most likely that some of your games are also installed on my Switch, because some of the files had the same size.
All saves have one in common. At offset 0x100 they begin with 0x44 0x49 0x53 0x46 which translates to "DISF". All but 2 of your files are missing those lines.

Sorry. Nothing you can do about. This is a risk using emunand it also happend to me on 3ds but I could restore it because of save backups I made.

reinaldox_ · Mar 26, 2019

GothicIII said:
I don't get it. With hacdiskmount he already got the decrypted save file. If I understood this correctly then all he has to do is run his game on a fresh nand and make a save. Then look what kind of file is created and replace it with that he extracted.
So Game A creates save 0[0]1A and his extracted save is 0[0]42 then he renames his 0[0]42 backup to 0[0]1A and replaces it on the new nand.
The save should load or not? EDIT: => Yes this works, too.

EDIT: The only save I was able to extract was 0[0]34. Either the saves are corrupted or it is indeed a programming error.

@reinaldox_ :

I am very sorry to say this but your saves are beside 0[0]34 completely broken. From all files you provided only 0[0]34 is valid.
0[0]3c 0[0]3d 0[0]3e 0[0]3f 0[0]40 0[0]41 0[0]42 are completly empty (no data).
0[0]37 0[0]39 has only garbage data and no header.
0[0]38 seems it has a valid header but the data is probably broken beyond repair.

I validated my acclaims through my own save files. Every single one I managed to extract without errors and they all have a header . I am on SX OS 6.2.0. It is most likely that some of your games are also installed on my Switch, because some of the files had the same size.
All saves have one in common. At offset 0x100 they begin with 0x44 0x49 0x53 0x46 which translates to "DISF". All but 2 of your files are missing those lines.

Sorry. Nothing you can do about. This is a risk using emunand it also happend to me on 3ds but I could restore it because of save backups I made.

Thanks mate for trying. I needed that someone with more knowledge could say that. Thank you again

reinaldox_ · Mar 26, 2019

GothicIII said:
I don't get it. With hacdiskmount he already got the decrypted save file. If I understood this correctly then all he has to do is run his game on a fresh nand and make a save. Then look what kind of file is created and replace it with that he extracted.
So Game A creates save 0[0]1A and his extracted save is 0[0]42 then he renames his 0[0]42 backup to 0[0]1A and replaces it on the new nand.
The save should load or not? EDIT: => Yes this works, too.

EDIT: The only save I was able to extract was 0[0]34. Either the saves are corrupted or it is indeed a programming error.

@reinaldox_ :

I am very sorry to say this but your saves are beside 0[0]34 completely broken. From all files you provided only 0[0]34 is valid.
0[0]3c 0[0]3d 0[0]3e 0[0]3f 0[0]40 0[0]41 0[0]42 are completly empty (no data).
0[0]37 0[0]39 has only garbage data and no header.
0[0]38 seems it has a valid header but the data is probably broken beyond repair.

I validated my acclaims through my own save files. Every single one I managed to extract without errors and they all have a header . I am on SX OS 6.2.0. It is most likely that some of your games are also installed on my Switch, because some of the files had the same size.
All saves have one in common. At offset 0x100 they begin with 0x44 0x49 0x53 0x46 which translates to "DISF". All but 2 of your files are missing those lines.

Sorry. Nothing you can do about. This is a risk using emunand it also happend to me on 3ds but I could restore it because of save backups I made.

oh and about the hacdiskmount disc, is it that possible? to replace the raw save file ? because i tried it before but i had a "corrupted save file" on the switch.

GothicIII · Mar 26, 2019

reinaldox_ said:
oh and about the hacdiskmount disc, is it that possible? to replace the raw save file ? because i tried it before but i had a "corrupted save file" on the switch.

Yes it should work since the saves are unencrypted and don't need device specific files. Basicly they are like "zip" files. A container holding your save game files. Hacdiskmount does the work about the encryption layer. I myself didn't try it but I found a post somewhere on gbatemp which claimed it worked like this and the theory doesn't get in the way either

If you used the files you provided above then it didn't work because the saves are indeed broken. Or you used a wrong save on a game. The save file names are not the same across nands.

Your smash save file should work. This is the 0[0]34 file.

reinaldox_ · Mar 26, 2019

GothicIII said:
Yes it should work since the saves are unencrypted and don't need device specific files. Basicly they are like "zip" files. A container holding your save game files. Hacdiskmount does the work about the encryption layer. I myself didn't try it but I found a post somewhere on gbatemp which claimed it worked like this and the theory doesn't get in the way either
If you used the files you provided above then it didn't work because the saves are indeed broken. Or you used a wrong save on a game. The save file names are not the same across nands.

Your smash save file should work. This is the 0[0]34 file.

the funny thing is, i don't know why there is a smash save data file haha. i never played it in that nand. it seems to be the save data created by pokemon let's go for the pokemon spirits.

kimbra · Jun 11, 2019

F4mouZSt4r said:
Do you have the switch keys in "$HOME/.switch/"?
If not load the keys manually with '-k <keyfile>'

Is running

Code:

hactoolnet.exe -k prod.keys

with prod.keys in the same folder the correct way to execute? It always just says "Input file must be specified"

F4mouZSt4r · Jun 11, 2019

You need to add the path to the file or the file name directly when hactool is in the same directory

Homebrew Question Anyone good at hactoolnet for NAND save data extracting? pls help!

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