Fern Wifi Cracker Deb Download

[Catherin Bergan]

FernWiFi cracker, The name says about it. It's a GUI based WiFi security auditing tool that written on Python. Fern WiFi cracker can crack and recover WEP/WPA/WPS keys and also run other network based attacks on wireless or Ethernet based networks. Fern created by Saviour Emmanuel Ekiko.

Every time we open fern it will check for update and if we have a updated version of Kali then it will ask us to use it's professional version. It is available for purchase in -pro.com. We are not going to buy it so we choose "No" and the main menu of Fern opens like the following screenshot:

Now we select the network interface. Usually our devices internal WiFi is the wlan0 interface and to use monitor modes from our external WiFi adapter we need to select wlan1 interface, as we did in the following screenshot:

Here we need a dictionary file. A dictionary file/wordlist is a text file that contains lots of passwords. Our attack will follow the brute-force method first it capture the handshake file from the WiFi network then it try to crack the handshake file by brute-force method from our given password file. We will discuss about how it works later.

Here we discuss on the basics without diving deeper technological terms. We know that when we connect our device to a new protected WiFI we need the password. But from the second time we don't need the the password, Why? Because the password stored in our device for that WiFi network. It stores the hash value of password (not the plain text).

When we try to connect for second time the device sends the password in hash format to the WiFi router and asks to connect (handshake). The router checks everything is correct and allow it to connect.

This tool sends de-authentication packets to the router using our special WiFi adapter.(That's why we need a WiFi router that supports packet injection). For the de-authentication packets all the connected devices with the router got disconnected and as we know after this those disconnected devices again try to connect with the target router.

Now these passwords are encrypted and we need a list of password and our tool with match this hash one by one from our given passwordlist (wordlist or dictionary file). This is brute-force attack. If the password will be in our list then we can get it easily. Bigger size of wordlists can increase provide us higher success rate. Come on almost everyone uses common passwords, because these kind of passwords are easy to remember.

Disclaimer: This tutorial is for educational propose. Attacking others devices considered as criminal offense. We don't support that. This is for spreading awareness that we should choose a very strong password for us. We have used this against our own network.

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However, I observed in all three that i am not getting any mac addresses connected to my router or clients that are showing whenever i use aircrack, wifite and the fern tools. I do have multiple devices connected and one of which is my phone, but apparently i'm not able to see any clients in my stuff.

To add up, i'm not sure if my wireless chipset is being supported by these tools. Monitor mode is being enabled, but i'm not sure if this is enough. So far i only know that this is my chipset: Broadcom BCM43xx 1.0 (7.21.171.130.1a1)

If you clicked the link I am stuck in step 8. In step 8, I don't see any clients connected to my router, but there are devices connected. I tried both being close and not to distant to my router, but still no luck. I also tried to leave my laptop for 4 hours straight, but still no clients showing up. Not sure if i need to wait for more than that.

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