popular toys Yokai watch

Steeve · 2021-02-16 13:43:11

Good morning all,

I have medal yokai watch dream and arks tokens

https://yokaiwatch.fandom.com/wiki/Yo-k … eam_Medals
https://yokaiwatch.fandom.com/wiki/List … (Japanese)

they work with toy watches and with 3Ds and switch games like amiibo ....

https://www.nintenderos.com/2016/07/yo- … -pelicula/
https://nihotaku.fr/2018/07/14/yokai-wa … er-visuel/

what interests me is for 3ds and switch

I have 2 medals and 3 arks.
They are all ultralight mifaires with an ev1 password.
I tested the command "hf mfu info" and I had this result

then the command "hf mfu pwdgen -r"
and I tried the generate password but with no result.

I found an application apk "nfc toy info" of obiima
http://obiima.tk/nfc_toy_info.html

With this application I can read and dump the mfu without any problem but without an explanation of how it works ...

With the bin file of the dump made with this application, can someone help me find the ev1 password and explain to me how it is done ...

If someone has already worked on it, or if someone is interested in helping me .... I already wish I could find the Ev1 password, find the algorithm and decrypt the data to be able to generate the other medals and uid

Steeve · 2021-02-16 13:46:25

dump bin file :

04ECDABA 02FE4E80 3248FF03 F5101200 4241424F 00010001 76F4B1C2 05640253 1FB7E90F 3F557C28 0B9EC209 D0BF04C8 CA523DEE 7F5E49BE C691F8A4 4AE9ED10 0DF0AA1F C8895440 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00003FBD 04000006 C0000000 73D87A65 BEEF0000 973B0B8A E00FE294 CD3FCF4D 5CFB62BA 5064EBD1 1E0CECF6 E65D358A 38C609FE