Develop Bugs

[Q] NFC hardware issue or missing something?

Asked this in this thread but as it's a bit tangential to the topic, thought I'd ask here.
Basically wondering if I have the process right for just playing around and scanning your keycards/CCs.
1. Enable NFC on phone.
2. Install an NFC taginfo app (NFC Taginfo by Research Labs or TagInfo by NXP for example)
3. Open app.
4. Put card under/near phone
5. It should then scan it and display info
Curious because nothing seems to happen when I try and so wondering if I'm missing something obvious, if I have a hardware problem, or maybe none of my cards actually are of a scannable type (tried a couple CCs which both have chips on them, and my work badge which is some sort of contact read - not sure what sort though).

You have NFC enabled cards?
I've heard of RFID, but not NFC.
NFC is not compatible with RFID (that I know of).

adrynalyne said:
You have NFC enabled cards?
I've heard of RFID, but not NFC.
NFC is not compatible with RFID (that I know of).
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Agreed.
Card as in a credit-card, ya?
Get some tags if you want to play with nfc.
tagstand.com has 'em.
And mobile payments via google wallet at a paypass vendor.

Maybe that's it.
Just the other thread specifically was talking about RFID cards (pulling CC information, unsecured doorpass keys so you can use your phone to swipe into some locations instead of keycard, ski pass cards, etc).
So assumed there was some RFID scanning functionality as well.

ceribaen said:
Maybe that's it.
Just the other thread specifically was talking about RFID cards (pulling CC information, unsecured doorpass keys so you can use your phone to swipe into some locations instead of keycard, ski pass cards, etc).
So assumed there was some RFID scanning functionality as well.
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As far as I know, there is no app that is capable of emulating RFID (yet).

adrynalyne said:
As far as I know, there is no app that is capable of emulating RFID (yet).
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As I understand it, the code is actually already present but blocked by google for security reasons. They use that security chip they brag about in all the Google Wallet documentation to enable RFID emulation mode.
The big thing to keep in mind is that RFID cards can come in 125 kHz and 13.56 MHz variants. NFC is 13.56 MHz as well, and can theoretically emulate 13.56 MHz cards perfectly, but it cannot read or emulate 125 kHz cards, now or ever.

OV-Chipkaart

Hello people,
So I recently was playing around with some NFC apps, and I found out my OV-Chipkaart (Dutch public transit card) was read by my phone. Unfortunately I got a lot of numbers and stuff I didn't understand. Does anybody know more about this?

The card is encrypted. If you get the key (there are a couple of articles on the internet which tell you how to get it), you should be able to read the entire card. Without the key you can only see the expiration date.
I saw it was possible to add your own MIFARE key in the TagInfo app. The only thing you need to get this key is an RFID-reader for your PC and some processing power (and the appropriate software).

cool
Thats so cool

My acces card for school does the same. Found this out because everytime i put my phone kn my wallet it made a sound.
Sent from my GT-I9300 using xda premium

UID
Each contactless chip (incuding the Mifare you have) has a unique id which is accessible to any contactless reader, in this case you phone. Unique id enables the reader to overcome collision for reading one chip at a time. This is is probably used as the id of your card by the system it is being used.
htcsnap93 said:
My acces card for school does the same. Found this out because everytime i put my phone kn my wallet it made a sound.
Sent from my GT-I9300 using xda premium
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Click to collapse

hey on they internet i found this :
http://www.youtube.com/watch?v=L7wyHfYDg4A
http://www.ov-chipkaart.me/forum/vi...sid=601115f083127a3a86069b25feebdb43&start=30
i tested it on my personal ov chipkaart but it didn' t work because i haven' t made a dump off the card. i haven' t got a reader for it so maybe if a xda that lives in Rotterdam/Cappele a/d Ijssel is kind enough to make a dump for me

I also recently checked my bus-card and the phone could read some of the info in the card, so i was wondering if it is possible to clone the info in the card to some other nfc tag, which would be cool, and also if i use the phone as rifid reader, mentioned above, connected to pc with usb then theoretically it would be possible to reprogram the card...?
And also another question, is it possible for the phone to send out same info which is on the card so i could use phone instead of bus-card at the bus?
EDIT: I read previous topics and realized that this is impossible.

The ov-chipkaart part is now available and working in the source of github/wandcode/farebot. I have tried and confirmed that this is working. You will need to crack the MiFare classic keys first, this is only possible on a ov-chipkaart by NXP-semiconductors (so not the Infineon version)

I don't have a RFID card reader... Is it possible to dump the chipkaart keys with the Samsung Nexus and then crack the keys with the PC?

Credit
Funny
Now to find out how to upload vitual cash

leto78 said:
I don't have a RFID card reader... Is it possible to dump the chipkaart keys with the Samsung Nexus and then crack the keys with the PC?
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No that's where the power of chip-cards come in play. There are no keys on it who a external device will receive and decipher. A Mifare Classic card has a built-in authentication system which you will have to pass to read/write onto the card.
The only possible way i could think of is to take the known key from the card, generate a dictionary on a computer and then bruteforce with a phone. But i think that would be more time/hassle then buying a 20 dollar NFC reader.

Factionwars said:
The only possible way i could think of is to take the known key from the card, generate a dictionary on a computer and then bruteforce with a phone. But i think that would be more time/hassle then buying a 20 dollar NFC reader.
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All the Mifare card readers I could find cost at least 40 euros... Do you recommend any cheap ones?

leto78 said:
All the Mifare card readers I could find cost at least 40 euros... Do you recommend any cheap ones?
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Ah you have to take a look around, there are loads of people owning a acr122u(touchatag) who bought them when the ov chipkaart got cracked, prices have been rising i guess. Try second hand

Factionwars said:
Ah you have to take a look around, there are loads of people owning a acr122u(touchatag) who bought them when the ov chipkaart got cracked, prices have been rising i guess. Try second hand
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Anyone heard about the news today? The OV got hacked again.
You guys know any of this?

dragonwith said:
Anyone heard about the news today? The OV got hacked again.
You guys know any of this?
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Here a hidden post on the details http://www.totalov.nl/m/index.php?type=n&n=166
I have been on it all morning, and it seems to be more of a theoretical hack rather than a real PoC. I also still don't understand how you could attach a sticker to a nfc card and the reader will read the sticker instead of the nfc card, it will read both in my logic.

Any news or how to's available.
Hi guys any app or news available on how to do this.
If anyone in holland is willing to help me with a dumpfile of my 0V chip card for a reward, sent me a pm please.:good:

Factionwars said:
Here a hidden post on the details http://www.totalov.nl/m/index.php?type=n&n=166
I have been on it all morning, and it seems to be more of a theoretical hack rather than a real PoC. I also still don't understand how you could attach a sticker to a nfc card and the reader will read the sticker instead of the nfc card, it will read both in my logic.
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Isnt it kinda obvious that you have a huge sticker on your OV. Like Checkers can just take of the sticker and they can see its fake.

dragonwith said:
Isnt it kinda obvious that you have a huge sticker on your OV. Like Checkers can just take of the sticker and they can see its fake.
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No Mifare classic stickers can be very small, and then again you can also attach it to the card holder it's in and when you get asked to take it out you just have bad luck. Though i am more interested in the Tech and Security rather then abusing it.

Hey guys. I'm willing to help and work together to make this work. I've also noticed that the forum of the last hack, ov-chipkaart.me is down. Does anyone know anything about this?

Factionwars said:
Here a hidden post on the details ---
I have been on it all morning, and it seems to be more of a theoretical hack rather than a real PoC. I also still don't understand how you could attach a sticker to a nfc card and the reader will read the sticker instead of the nfc card, it will read both in my logic.
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The sourcecode of Farebot is avalible on github if you didn't already find it.
Since it can already read the data it must not be hard to be able to write it back to a new tag..
If you need any help or a Mifare reader you can contact me.
---------- Post added at 12:42 PM ---------- Previous post was at 12:37 PM ----------
DamianSewo said:
Hey guys. I'm willing to help and work together to make this work. I've also noticed that the forum of the last hack, ov-chipkaart.me is down. Does anyone know anything about this?
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Just visit archive (I cant link, since < 10 posts. Google it, 1st link) and use the Way Back Macine.

External NFC readers

I found out my phone doesn't have NFC capabilities (Samsung Galaxy S2) and I hear there are external readers available that use the sim card slot or SD card slot. I was wondering if anyone has tried them and if there are any limitations compared to integrated NFC on a standard mobile phone.
I'm doing a project on NFC and its basically buy one of these or get my hands on a Nexus S.

Careful there buddy, your confusing things. What is it you want to do? Do you want to use your phone like a card, or do you want to read other cards? Either way, if your phone does not have any nfc capabilities, then that means you have neither the nfc antenna, nor the nfc controller, nor a secure element. The only way to get NFC capability to a non capable phone would be to use an sd card that brings all the components I just mentioned with it. I don't know of any company to currently sell that.
But before you go running after a new phone, be warned, if your project has anything to do with using your phone as a card, just let it go. Not worth buying a phone just for that as your project may probably fail.

My project deals with reading data off a card, altering the data and either writing the new data to the card or emulating it.
Are you saying this isn't possible with the SD readers or current phones ?

You could try to find a NFC-enabled battery for your S2.

Fennem said:
My project deals with reading data off a card, altering the data and either writing the new data to the card or emulating it.
Are you saying this isn't possible with the SD readers or current phones ?
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Reading and writing to a card is possible as long as it complies to the nfc forum specifications. That means your phone can read most of the NFC Forum Tags and cards that generally comply to iso 14443 A or B. Some of the phones can also write Mifare Classic cards. It basicly depends on the NFC controller inside your smartphone. Smartphones that use NXP's PN544 chip for example have the capability to read and write them.
As for the SD, this is rather an open case. Adding NFC functionality to a non capable phone is not that easy to acchieve. In most cases you ned to equip your phone with secure element, nfc controller and nfc antenna. In order to do so you need hardware that basicly provides all of that. I read about some microSD cards that may bring all the components, but I haven't seen anyone sell them. It's definitly easier to buy a new phone that has all the capabilities you need.
Emulating a card is currently a dead end for third party devs. Unless you can talk to one of the big players like MNOs, TSMs or handsetmanufacturer you will be out of luck. If you are ok with rooting your phone and loosing warranty etc. you can maybe get card emulation to work. An example for it to work would be the app simplytapp that is available only for users of the cyanogenmod 9.1 and 10.

Buy a galaxy nexus
Sent from my GT-I9300 using xda premium

Upgrade MiFare classic tags to NFC Forum Compliant + Sony RC-S320

Hey there everyone, I'm making this thread to follow my plans on attempting to convert MiFare classic/1k tags to Desfire of FeliCa type tags.
Before people go telling me it cannot be done, IS THIS NOT THE 'NFC HACKING' FORUM!?
Let me have my fun and see what i'm able to do and learn on my own.
For now, I'm getting my hands on some different types of tags and cards, and i'm getting a Sydney Opal card soon (don't know what this uses yet)
I have also ordered a Sony RC-S320 Contactless IC Card Reader/Writer from eBay, got this for $30.
I know it can read/write FeliCa type, and NDEF type tags, interested in if it can do anything else too, can't find much documentation on it.. D:
Anyway basically my point with this is a family member that is techie in my family has set up some secret messages on NFC tags he got off eBay, and refuses to tell me what they are even though he got MiFare classic tags, and my I9505 cannot read them. He said just this: 'Deal With It'
>>
So my boredom helped me decide that I will get myself a bunch of different cards, a USB writer, and ill give a shot at making an app/program to do things with them.
This thread will also serve as documentation for the RC-S320 because there is none available and from the little I have seen, I THINK that it can emulate an NFC tag, which is something I see come up often on here. So I'll just write down what I find.

According to our manufacturer they're all NDEF formatted but even if it was detected as a DESFire chip it would still not work with any Broadcom controller. It's like trying to make a Pentium 4 an AMD Athlon.

TaggerNFC said:
According to our manufacturer they're all NDEF formatted but even if it was detected as a DESFire chip it would still not work with any Broadcom controller. It's like trying to make a Pentium 4 an AMD Athlon.
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Are you able to shed me some light on why it is incompatible, yet able to detect the cards and their unique ID? c:
>serious question

CountParadox said:
Are you able to shed me some light on why it is incompatible, yet able to detect the cards and their unique ID? c:
>serious question
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Simply put, we just know that NXP sell's our manufacturer the chips and they pre-program them. This can not be changed. It's not technically impossible but it would have to be done at the chip manufacturing level.
I know the MiFare Classic can have it's unique ID read by the Broadcom controller but for it to actually read the rest of the tag you would need to modify the reader itself. You can't make the MiFare Classic tag a NFC Forum type tag and unfortunately it will stay that way. I have consulted the engineers at our manufacturer that deals with NXP and he said that it's a possibility that needs to be explored but the first step he say's is to write to the read-only partitions which is seemingly impossible.
On another note, we offer competitive pricing on NFC tags. Please refer to my sig to visit our website.

There is nothing read-only if you have the right card - for example UID is fixed on all consumer cards, but cards with changeable UID still exist. So unless the card is different on a hardware-level (like some additional crypto-support) then it is possible to make it into almost anything.

zvieratko said:
There is nothing read-only if you have the right card - for example UID is fixed on all consumer cards, but cards with changeable UID still exist. So unless the card is different on a hardware-level (like some additional crypto-support) then it is possible to make it into almost anything.
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Well we only sell consumer cards so we wouldn't know much about cards that are fully rewriteable. It's easier just to buy NFC Forum type tags so that compatibility isn't a issue.

[Q] Copying NfcA Tag to another Tag

Hey guys. What I would like to ask is would it be possible to create another card for myself to school so I don't have to take my card out every time i can just use an NFC tag sticked to the back of my phone. I cannot find an answer to this and I would really like an expert to answer it. Preferable you developer guys. All i want to achieve is read the info of card then just write the read info to an NFC tag.
Thank you so much!

Sorry, it's a MIFARE Classic card MF1S50

Give this a try: https://play.google.com/store/apps/details?id=com.skjolberg.nfc.clone2

Yeah i tried Tag Cloner before sadly it says it's unsupported

if its mifare classic and you have a modern phone it wont work.
the broadcom chipset used in phones like the samsung s4, nexus 5 etc, doesnt support mifare classic/s50.
try on an older device
you may ave to clone the UID though, send milkyzone a message on ebay and they might be able to get you fully blank cards that you can change the UID of....
you might wanna check with your school though if youre allowed to do this

CountParadox said:
if its mifare classic and you have a modern phone it wont work.
the broadcom chipset used in phones like the samsung s4, nexus 5 etc, doesnt support mifare classic/s50.
try on an older device
you may ave to clone the UID though, send milkyzone a message on ebay and they might be able to get you fully blank cards that you can change the UID of....
you might wanna check with your school though if you're allowed to do this
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Hey, well I have an LG G2 so it most likely doesn't have the NXP chip. Yeah the thing is i'd want to use my phone as the card reader for cloning, not sure if that would work. I was thinking of the NFC tools in Kali and booting that from my phone so maybe then it would recognize the reader, not sure though. Yeah I heard of the fully blank cards I was more concerned about doing it without buying an NFC reader for my PC. Yeah haha school might nit allow it but my goal is to just be able to do it haha, the sense of achievement.
Would i be able to write MiFare Classic cards with my phone using Kali? Or does the writing capability depend on the card? Cuz for sure my phone detects it as i used the app NFC ReTag to just assign functions depending on the UID. THanks

Simple and short answer, almost all modern Smart-phones can't read or write Mifare Classic, because they use Broadcom chips to handle NFC. And those Broadcom chips can't handle the proprietary Mifare Classic protocol from NXP. But you can try it with your computer and maybe a reader with a chip like the PN533 and libnfc.

Is it possible to clone tags to another tag. My work phone Samsung S5 mini is the reader and I have to scan the tags to say I'm at this place. My Samsung S6 Edge reads the tag type as Ultralight C, NTAG216.
Your Help would be appreciated

sammie786 said:
Is it possible to clone tags to another tag. My work phone Samsung S5 mini is the reader and I have to scan the tags to say I'm at this place. My Samsung S6 Edge reads the tag type as Ultralight C, NTAG216.
Your Help would be appreciated
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Probably not with your phone alone. As stated above these newer phones do not have a compatible chipset. If you buy an nfc reader/writer online with the correct chipset you might be able to but its not simple especially if you have to overcome protection. Investing money in this might not be worth it especially if you are not 100% certain it will work. You can buy empty or unlocked cards on ebay they aren't too expensive but to actually write them you'd have to acquire information from the TAG with a good reader. Replaying the card with your phone is not possible.