{% hint style="success" %}
Learn & practice AWS Hacking:[**HackTricks Training AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)\
Learn & practice GCP Hacking: [**HackTricks Training GCP Red Team Expert (GRTE)**](https://training.hacktricks.xyz/courses/grte)
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* **Share hacking tricks by submitting PRs to the** [**HackTricks**](https://github.com/carlospolop/hacktricks) and [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repos.
{% endhint %}
# Check BSSIDs
When you receive a capture whose principal traffic is Wifi using WireShark you can start investigating all the SSIDs of the capture with _Wireless --> WLAN Traffic_:
![](<../../../.gitbook/assets/image (424).png>)
![](<../../../.gitbook/assets/image (425).png>)
## Brute Force
One of the columns of that screen indicates if **any authentication was found inside the pcap**. If that is the case you can try to Brute force it using `aircrack-ng`:
```bash
aircrack-ng -w pwds-file.txt -b file.pcap
```
For example it will retrieve the WPA passphrase protecting a PSK (pre shared-key), that will be required to decrypt the trafic later.
# Data in Beacons / Side Channel
If you suspect that **data is being leaked inside beacons of a Wifi network** you can check the beacons of the network using a filter like the following one: `wlan contains `, or `wlan.ssid == "NAMEofNETWORK"` search inside the filtered packets for suspicious strings.
# Find Unknown MAC Addresses in A Wifi Network
The following link will be useful to find the **machines sending data inside a Wifi Network**:
* `((wlan.ta == e8:de:27:16:70:c9) && !(wlan.fc == 0x8000)) && !(wlan.fc.type_subtype == 0x0005) && !(wlan.fc.type_subtype ==0x0004) && !(wlan.addr==ff:ff:ff:ff:ff:ff) && wlan.fc.type==2`
If you already know **MAC addresses you can remove them from the output** adding checks like this one: `&& !(wlan.addr==5c:51:88:31:a0:3b)`
Once you have detected **unknown MAC** addresses communicating inside the network you can use **filters** like the following one: `wlan.addr== && (ftp || http || ssh || telnet)` to filter its traffic. Note that ftp/http/ssh/telnet filters are useful if you have decrypted the traffic.
# Decrypt Traffic
Edit --> Preferences --> Protocols --> IEEE 802.11--> Edit
![](<../../../.gitbook/assets/image (426).png>)
{% hint style="success" %}
Learn & practice AWS Hacking:[**HackTricks Training AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)\
Learn & practice GCP Hacking: [**HackTricks Training GCP Red Team Expert (GRTE)**](https://training.hacktricks.xyz/courses/grte)
Support HackTricks
* Check the [**subscription plans**](https://github.com/sponsors/carlospolop)!
* **Join the** 💬 [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** us on **Twitter** 🐦 [**@hacktricks\_live**](https://twitter.com/hacktricks\_live)**.**
* **Share hacking tricks by submitting PRs to the** [**HackTricks**](https://github.com/carlospolop/hacktricks) and [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repos.
{% endhint %}