Jul 24, 2018 - WEP cracking technique: WEP uses a 40-bit key which is 8 characters long. Fern WiFi Cracker is a python based tool that can be used for WEP/WPA/WPA2. The hacking program will only be as good as the wordlist itself.

WEP IVs are pseudorandom cryptographic variables, used by the wireless access point and clients to determine trust. Malicious hackers can exploit that trust by injecting false connection requests to the access point. This, in turn, causes the access point to send a flood of replies, all with those handy WEP IVs. These IVs allow the malicious hacker to attack the WEP key using, essentially, statistical analysis.

WiFi hacking software comes and goes, but aircrack, airodump, and aireplay have been around for a long time. They’re all quality products and you should know how each of these three tools works and how they can be used in conjunction with one another for a successful WiFi crack. The Fern WiFi cracker is an example of some fairly new WiFi hacking software that’s worth it. Fern is a great WiFi cracker to use in a pinch and it’s already included in Back Track and Kali Linux. However, you can download Fern’s source code right here. We can use Fern to do a WiFi crack against a WEP encrypted network. Start by launching Fern from the Applications menu button at the top-left corner of the screen.

If you’re running Kali Linux: -Select Applications -> Kali Linux -> Wireless Attacks -> Wireless Tools If you’re running Back Track: -Select Applications -> Back Track -> Exploitation Tools -> Wireless Exploitation Tools -> WLAN Exploitation Launch the Fern WiFi Cracker and Crack WEP From the menu, click Fern-wifi-cracker to launch the tool. You should already have your wireless card in monitor mode. Click the drop down menu at the top of Fern and select your wireless adapter from this list. Click OK to any message boxes you get. After a few moments, the message Monitor Mode Enabledon should appear in green as seen in the image. Then click Scan for Access Points.

Fern will scan for WiFi networks in range, and will begin populating the WEP and WPA boxes. Once the the Fern WiFi Cracker finishes scanning for networks, you can select the network you are targeting by finding it in either the WEP section or the WPA section. Sketchup pro 2017 download. In this example, I am targeting a WEP encrypted network with an SSID of Hack-WiFi.

You will have to select your target network from the drop down box and then clicking the WiFi Attack button to the right. The Fern WiFi Cracker will now begin an automated WEP crack against the hack-wifi network.

This may take some time, so if you need to get some coffee or take a dump, go for it. You’ll have a Please Waitscreen for a long time, as Fern goes through the process. Remember, Fern is completely automated WiFi hacking software, so there isn’t anything left to do at this point than to just allow Fern to sniff the WiFi network, authenticate to the device, begin injecting replay traffic, and finally to crack WEP. In my case, the Fern WiFi cracker didn’t succeed until it captured about 25,000 IVs. But finally, if everything worked as it should, you’ll get the message below: Congratulations! Another successful audit of a wireless network!

As always, be sure to confirm you can connect to the target WiFi network.