Hacking DIY amiibo cards

[HappyzLife]

Can i use these nfc card?
(i don't know why but i can't copy & paste, so here's a screenshot)

Spoiler

 

[FunThomas]

looks good

i think that _Tim_ should place the information on the first page that NFC215 Tags with 540 Bytes and 504 Bytes usable memory are used for this

 

[HappyzLife]

Where can i find the amiibo bins download?
All what i found is for amiiqo and it cant be loaded by tagmo :/
Ok ok, i found them

 

[memomo]

is these compatible ? I have a couple of these nfc from my old xperia phone

 

[javiMaD]

is these compatible ? I have a couple of these nfc from my old xperia phone

No

 

[memomo]

No

can you detail please

 

[plasma]

can you detail please

Their capacity is too small.

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

Can i use these nfc card?
(i don't know why but i can't copy & paste, so here's a screenshot)

Spoiler

Hahah no way, I bought these exact ones last night.

 

[memomo]

Their capacity is too small.

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


Hahah no way, I bought these exact ones last night.

what is the recommended capacity ? and any other useful things before I buy some of them

 

[FunThomas]

read https://gbatemp.net/threads/diy-amiibo-cards.406978/page-29#post-6045427

some more post up here at the same page

 

[plasma]

what is the recommended capacity ? and any other useful things before I buy some of them

They need to be NTAG215's as they have the right amount of space - its either 540 or 504 bytes, I can never remember. Cannot be any more or any less.

 

[Nightwish]

They need to be NTAG215's as they have the right amount of space - its either 540 or 504 bytes, I can never remember. Cannot be any more or any less.

As far as i understood looking at the spec, any tag that is NTAG215 has to have the right amount of memory and not any other (because otherwise it couldn't call itself NTAG215). I don't know why bigger tags don't work, though.

 

[memomo]

They need to be NTAG215's as they have the right amount of space - its either 540 or 504 bytes, I can never remember. Cannot be any more or any less.

are those good or is there a better deal ? here

 

[plasma]

are those good or is there a better deal ? here

They seem good, might snatch that up myself hmm.
Im gonna test the tags out when I get them using the AR cards you get with a 3DS
Then I have my own Amiibo cards

 

[memomo]

They seem good, might snatch that up myself hmm.
Im gonna test the tags out when I get them using the AR cards you get with a 3DS
Then I have my own Amiibo cards

are the AR cards that came with 3ds had nfc !!?

 

[plasma]

are the AR cards that came with 3ds had nfc !!?

Nope, I said I am putting some of the tags on the back of them so they will have NFC

 

[memomo]

are those good or is there a better deal ? here

I bought it, it should arrive " before the end of February™ " lets hope it is in good quality

 

[socram8888]

@socram8888 there is a bug in your latest code. the pack function does not calculate the data checksum correctly.

sha256hmac(tagKeys.hmacKey, sizeof(tagKeys.hmacKey), plain + 0x1D4, 0x34, *****cipher***** + HMAC_POS_TAG);
sha256hmac(dataKeys.hmacKey, sizeof(dataKeys.hmacKey), ******plain***** + 0x029, 0x1DF, cipher + HMAC_POS_DATA);

the tag checksum is used by the data checksum. however since the plain data is never updated the data checksum still uses the invalid checksum.

if you look at @javiMaD's original code he does it correctly. Also @javiMaD your latest code is also wrong due to merging the changes from upstream with this bug.

FFS... I even added a comment on the unpack() to remember why it was that way

Fixed. Thanks!

 

[Wurztha]

They need to be NTAG215's as they have the right amount of space - its either 540 or 504 bytes, I can never remember. Cannot be any more or any less.

From what I have read you remembered just fine, they are 540 but have 504 writable

 

[memomo]

Checksum for the unfixed info: MD5: 2551AFC7C8813008819836E9B619F7ED
Checksum for locked secret: MD5: 0AD86557C7BA9E75C79A7B43BB466333

If you look on my download server (in description) in the amiibo folder, you might find something

Are Amiibos region-lock ?

 

[EmanueleBGN]

Are Amiibos region-lock ? if so are those in your server a US dump or EUR ?

amiibo are region free