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Question About Dumping Bin Files For The Yo-Kai Watch Arks/Medals

Master Dimentio

Master Dimentio

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So to anyone new to what these nifty little devices are, for Yo-Kai Watch, there were Medals and Ark toys you could use in Yo-Kai Watch that acted in a way similar to an Amiibo. Lately there's been an interest in seeing if there's a way to dump the bin file these devices contains for public use similar to how Amiibo files get dumped.

So far I've discovered that these devices provide a smaller file size than your standard Amiibo. I've also been told unlike Amiibos that use a NTAG 215, the Yo Kai toys use a NTAG 213.

Simply put, does anyone know if there's a way to dump the bin file from these toys?
 
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SylverReZ said:
Purchase an NFC tag re-writer device that can read different tag formats, one that can take in USB. See whether they use some form of encryption or possibility to duplicate the tags onto blanks.
Click to expand...
I'm being told from a source of mine also looking into this project that it does indeed use encryption.
 
Master Dimentio said:
I'm being told from a source of mine also looking into this project that it does indeed use encryption.
Click to expand...
The encryption key could be anywhere in the device, a logic analyzer could help you with sniffing the data as it's being decrypted.
 
Master Dimentio said:
Sounds useful. How do I go about doing this Logic Analyzer?
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Most, if not, all designs typically can be analyzed using an oscilloscope. But if your project uses wireless capabilities (i.e., NFC, Wi-Fi), high powered equipment, or FPGA/CPLD development boards, you're going to need one to ensure that it meets the requirements that you need. A logic analyzer like I said can analyze various logic signals coming from the hardware which can help you diagnose problems in the circuit that shouldn't be there, reverse engineering on how it works such as sniffing data, and much more.

So, for starters, a logic anaylzer can capture both digital and analogue data as 1's and 0's. These waves can be then decoded into readable data that can be put into use. There are many tutorials out there if you're interested into learning more about them. I do like the ones from EEVblog as they're very intuitive.

 

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