hacktricks/todo/radio-hacking/flipper-zero/fz-nfc.md
2023-04-25 20:35:28 +02:00

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# FZ - NFC
<details>
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## Intro <a href="#9wrzi" id="9wrzi"></a>
For info about RFID and NFC check the following page:
{% content-ref url="../../../radio-hacking/pentesting-rfid.md" %}
[pentesting-rfid.md](../../../radio-hacking/pentesting-rfid.md)
{% endcontent-ref %}
## Supported NFC cards <a href="#9wrzi" id="9wrzi"></a>
{% hint style="danger" %}
Apart from NFC cards Flipper Zero supports **other type of High-frequency cards** such as several **Mifare** Classic and Ultralight and **NTAG**.
{% endhint %}
New types of NFC cards will be added to the list of supported cards. Flipper Zero supports the following **NFC cards type A** (ISO 14443A):
* **Bank cards (EMV)** — only read UID, SAK, and ATQA without saving.
* **Unknown cards** — read (UID, SAK, ATQA) and emulate an UID.
For **NFC cards type B, type F, and type V**, Flipper Zero is able to read an UID without saving it.
### NFC cards type A <a href="#uvusf" id="uvusf"></a>
#### Bank card (EMV) <a href="#kzmrp" id="kzmrp"></a>
Flipper Zero can only read an UID, SAK, ATQA, and stored data on bank cards **without saving**.
Bank card reading screenFor bank cards, Flipper Zero can only read data **without saving and emulating it**.
<figure><img src="https://cdn.flipperzero.one/Monosnap_Miro_2022-08-17_12-26-31.png?auto=format&#x26;ixlib=react-9.1.1&#x26;h=916&#x26;w=2662" alt=""><figcaption></figcaption></figure>
#### Unknown cards <a href="#37eo8" id="37eo8"></a>
When Flipper Zero is **unable to determine NFC card's type**, then only an **UID, SAK, and ATQA** can be **read and saved**.
Unknown card reading screenFor unknown NFC cards, Flipper Zero can emulate only an UID.
<figure><img src="https://cdn.flipperzero.one/Monosnap_Miro_2022-08-17_12-27-53.png?auto=format&#x26;ixlib=react-9.1.1&#x26;h=932&#x26;w=2634" alt=""><figcaption></figcaption></figure>
### NFC cards types B, F, and V <a href="#wyg51" id="wyg51"></a>
For **NFC cards types B, F, and V**, Flipper Zero can only **read and display an UID** without saving it.
<figure><img src="https://archbee.imgix.net/3StCFqarJkJQZV-7N79yY/zBU55Fyj50TFO4U7S-OXH_screenshot-2022-08-12-at-182540.png?auto=format&#x26;ixlib=react-9.1.1&#x26;h=1080&#x26;w=2704" alt=""><figcaption></figcaption></figure>
## Actions
For an intro about NFC [**read this page**](../../../radio-hacking/pentesting-rfid.md#high-frequency-rfid-tags-13.56-mhz).
### Read
Flipper Zero can **read NFC cards**, however, it **doesn't understand all the protocols** that are based on ISO 14443. However, since **UID is a low-level attribute**, you might find yourself in a situation when **UID is already read, but the high-level data transfer protocol is still unknown**. You can read, emulate and manually input UID using Flipper for the primitive readers that use UID for authorization.
#### Reading the UID VS Reading the Data Inside <a href="#reading-the-uid-vs-reading-the-data-inside" id="reading-the-uid-vs-reading-the-data-inside"></a>
<figure><img src="../../../.gitbook/assets/image (26).png" alt=""><figcaption></figcaption></figure>
In Flipper, reading 13.56 MHz tags can be divided into two parts:
* **Low-level read** — reads only the UID, SAK, and ATQA. Flipper tries to guess the high-level protocol based on this data read from the card. You can't be 100% certain with this, as it is just an assumption based on certain factors.
* **High-level read** — reads the data from the card's memory using a specific high-level protocol. That would be reading the data on a Mifare Ultralight, reading the sectors from a Mifare Classic, or reading the card's attributes from PayPass/Apple Pay.
### Read Specific
In case Flipper Zero isn't capable of finding the type of card from the low level data, in `Extra Actions` you can select `Read Specific Card Type` and **manually** **indicate the type of card you would like to read**.
#### EMV Bank Cards (PayPass, payWave, Apple Pay, Google Pay) <a href="#emv-bank-cards-paypass-paywave-apple-pay-google-pay" id="emv-bank-cards-paypass-paywave-apple-pay-google-pay"></a>
Apart from simply reading the UID, you can extract a lot more data from a bank card. It's possible to **get the full card number** (the 16 digits on the front of the card), **validity date**, and in some cases even the **owner's name** along with a list of the **most recent transactions**.\
However, you **can't read the CVV this way** (the 3 digits on the back of the card). Also **bank cards are protected from replay attacks**, so copying it with Flipper and then trying to emulate it to pay for something won't work.
## References
* [https://blog.flipperzero.one/rfid/](https://blog.flipperzero.one/rfid/)
<details>
<summary><a href="https://cloud.hacktricks.xyz/pentesting-cloud/pentesting-cloud-methodology"><strong>☁️ HackTricks Cloud ☁️</strong></a> -<a href="https://twitter.com/hacktricks_live"><strong>🐦 Twitter 🐦</strong></a> - <a href="https://www.twitch.tv/hacktricks_live/schedule"><strong>🎙️ Twitch 🎙️</strong></a> - <a href="https://www.youtube.com/@hacktricks_LIVE"><strong>🎥 Youtube 🎥</strong></a></summary>
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</details>