ROM Hack [Release] Yo-kai Watch save data decrypter / encrypter

[SoyAlexPop]

is there a way to modify your medallium?
i used an ntr cfw plugin and tried to use a Complete Medallium hack, but like half of them had question marks for all their info(their medal icon is still in the book though)

This save editor can edit the medallium, you need to check every Yo-Kai individually tho

 

[DesperadoV3]

This save editor can edit the medallium, you need to check every Yo-Kai individually tho

oh i didn't know it was able to edit medallium, since i was using an old version of the editor
thanks!

 

[ceelo]

My son was having trouble in the game, so I edited some items in so he can manage and still feel like he accomplished something. Thanks!

 

[Angelcraft]

Can someone edit my game to the best?

 

[redpill0991]

I tried to edit the medaillium but I can't seem to make it work and I can't also generate yo-kai. Can someone help me with these?Thanks

 

[foocil]

thx men!!

 

[togenyan]

I tried to edit the medaillium but I can't seem to make it work and I can't also generate yo-kai. Can someone help me with these?Thanks

Did you click the apply button in the Medallium tab?
As for Yo-kai, I recommend editing existing Yo-kai instead of creating new one because there are some unknown values (not shown in the Yo-kai tab).

 

[Arthurgamer07]

What about Ganso and Honke?

 

[Suicuark]

Plz can anyone help me?
So:
I tried Yo-Kai Watch 1 Save Editor, i generated some items with 99 quantity but i didn't touched numbers #1 and #2.
Also generated some equipements.
Then my inventary got corrupted anytime i try openinng it or doing something related to it (Yo-kai fuse for example) The game crashes.
I can't supress the item from the save editor so what can i do?

 

[SoyAlexPop]

Plz can anyone help me?
So:
I tried Yo-Kai Watch 1 Save Editor, i generated some items with 99 quantity but i didn't touched numbers #1 and #2.
Also generated some equipements.
Then my inventary got corrupted anytime i try openinng it or doing something related to it (Yo-kai fuse for example) The game crashes.
I can't supress the item from the save editor so what can i do?

When you added new things, did you add the numbers in #1 & #2? Remember if your last item has the numbers 10 & 12 you need to put 12 & 14 on the nee item you add and so on.

 

[Suicuark]

When you added new things, did you add the numbers in #1 & #2? Remember if your last item has the numbers 10 & 12 you need to put 12 & 14 on the nee item you add and so on.

So if my Holy Exporb (last item) is 40 & 42 is should put 42 and 44?
Well inventory is not the only corrupted thing..
Also when i go out from a place or enter in. (leaving a shop for example ) the game crash also.
Is it related to it?

 

[SoyAlexPop]

So if my Holy Exporb (last item) is 40 & 42 is should put 42 and 44?

Yes, the next item should be 42 & 44.

So if my Holy Exporb (last item) is 40 & 42 is should put 42 and 44?
Well inventory is not the only corrupted thing..
Also when i go out from a place or enter in. (leaving a shop for example ) the game crash also.
Is it related to it?

It might be, try fixing the inventory and see if it works, I never had that problem.

 

[Blaziken988]

Sorry i've a question , for to use this i need hombrew channel on my 3ds or i can use without this ??

--------------------- MERGED ---------------------------

I've OLD3ds with Sysnand 4.5 and emunand 10.7 and use gateway 3ds

 

[Suicuark]

Sorry i've a question , for to use this i need hombrew channel on my 3ds or i can use without this ??

--------------------- MERGED ---------------------------

I've OLD3ds with Sysnand 4.5 and emunand 10.7 and use gateway 3ds

Well if you do have emuNAND you can install JKSM cia format save manager, then you won't need homebrew channel.

 

[Deleted member 373223]

"ERROR: [yw_proc] checksum does not match Processing failed." i am trying to decrypt

 

[Rubenid]

Can someone tell me where I have to put the yw_save.py and the other archives to descrypt?

I have this error: python: can't open the file "./yw_save.py": [Errno 2] No such file or directory
http://subefotos.com/ver/?a99ca22e93ff05e2096e8baec2e1ac38o.png I don´t know how to attach the photo, so here is the link.

Sorry for my bad english.

 

[iepuras]

uuhm, could anyone tell me how this decrypt/encrypt-thing works? I just have no clue

 

[togenyan]

"ERROR: [yw_proc] checksum does not match Processing failed." i am trying to decrypt

Could you send me your save file?

Can someone tell me where I have to put the yw_save.py and the other archives to descrypt?

I have this error: python: can't open the file "./yw_save.py": [Errno 2] No such file or directory
http://subefotos.com/ver/?a99ca22e93ff05e2096e8baec2e1ac38o.png I don´t know how to attach the photo, so here is the link.

Sorry for my bad english.

Type "python " and then drag and drop yw_save.py into the command prompt window.

uuhm, could anyone tell me how this decrypt/encrypt-thing works? I just have no clue

The save file contains the "key" to decrypt itself. For details, see the source code.
https://github.com/togenyan/yw_save/blob/master/yw_save.py

/* Yo-kai Watch 1 (and some other Level-5 games like Inazuma Eleven) */
struct savedata {
    char data[];
    char crc32[4];
    char seed[4]; /* "key" to decrypt itself */
};

/* Yo-kai Watch 2 Shin'uchi and Busters */
struct savedata {
    char nonce[12];
    char padding[4];
    char MAC[16]; /* Message authentication code */
    char messsage[];
};

 

[Arthurgamer07]

Do you plan on making one save editor for YW2 Honke/Ganso?

 

[iepuras]

Could you send me your save file?



Type "python " and then drag and drop yw_save.py into the command prompt window.


The save file contains the "key" to decrypt itself. For details, see the source code.
https://github.com/togenyan/yw_save/blob/master/yw_save.py

/* Yo-kai Watch 1 (and some other Level-5 games like Inazuma Eleven) */
struct savedata {
    char data[];
    char crc32[4];
    char seed[4]; /* "key" to decrypt itself */
};

/* Yo-kai Watch 2 Shin'uchi and Busters */
struct savedata {
    char nonce[12];
    char padding[4];
    char MAC[16]; /* Message authentication code */
    char messsage[];
};

woaa, that got way too technical for me I guess I'll have to wait a while, perhaps someone will incorporate the decryption/encryption-bit into an editor I have the know-how to use