![]() I hope you can see the value in truly random passwords now! If you were going to do this, and you would need some serious hardware at your disposal, you would pipe the output of crunch into aircrack. ![]() So I had a whopping 1787 TB! Yes, that is over 1 PB, PetaByte. Lets just generate random 8 character passwords.Ĭrunch 8 8 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ > wordlist Did you know that you can't actually set a password in WPA less than 8 characters? Ok, lets try that. Lets try increasing the size of the password to between 4 and 5:Ĭrunch 4 5 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ > wordlist How big is the file? Hmmmm I still have a pretty reasonable 72 MB. How big is the file? Ok so now lets include the uppercase alphabet, still no special characters.Ĭrunch 3 4 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ > wordlist How big is the file? Ok so now lets include the lowercase alphabet as well.Ĭrunch 3 4 0123456789abcdefghijklmnopqrstuvwxyz > wordlist How would we put this in a file? Easy, try: This command will generate passwords between 3 and 4 chars long with only numbers 0-9 and output to the screen. ![]() Lets install crunch, a word list generator. Lets go to the other extreme and generate our own wordlist. Ok, so what if the wordlist don't contain the password because the password isn't in the word list. If you ever discover your personal passwords in one of these password lists then you must change it immediately!Ĭrack the key with the following command:Īircrack-ng filename_of_packets -w Some of the passwords in the list are offensive, please don't go looking if you are easily offended. This list contains the most frequently used passwords. The password list is generated from lists of leaked passwords. Note, if Kali Linux drops its LAN connection, you can bring it up with a: Download a password list from the Internet. We are going to compare the four-way authentication handshake and compare it with a password list. On your legitimately connected wireless machine, try disconnecting and reconnecting a few times. The purpose of this step is to run airodump-ng to capture the 4-way authentication handshake for the target AP. Sudo iwconfig channel Ĭollecting the authentication handshake with airodump-ng packets? Save the pcap on the Desktop.Īnother alternative is using airodump. Try capturing the encrypted handshake in wireshark. Copy this value to a text file for later. Put the interface in monitor mode and use wireshark to discover the bssid of the target. We need to discover the channel and BSSID of our target network. This will also increase the amount of computation required to break the key.īasic lab setup Aircrack and monitor modeįollow the instructions here to put the Alpha USB Wifi adapter in monitor mode: Alpha_USB_in_monitor_mode Discover Network An alternative way of looking at this, the longer and more complex the key, the longer and more complex our password database must be. The more complex the key, the less likely it will appear in a password database. We are only able to identify the key if it is part of our password database. ![]() In this WPA cracking lab, we are brute-forcing the key. Remember that there are two radios, and you will need to set the 5GHz radio mode to disabled. Additionally, turn off the 5GHz radio and change the network mode on the 2.4 GHz radio to 802.11b/g Mixed. Refer to Broadband_CPE_Scenarios_with_Mikrotik_and_DD-WRT#WPA if you need to. Use WPA2 Personal and TKIP+AES.Įnsure that the wireless Windows PC can Ping the Wired PC. When cracking WEP we were identifying the key based on a series of statistical attacks. Unlike the previous WEP cracking lab where we could pick any hex key, we must use a simple predictable password. Please ensure that you keep the username as root and the password as admin. Refer to Basic AP Configuration if you need to. Ensure that the wireless Windows PC can Ping the Wired PC. Our first task is to configure WPA over the wireless network. 6.2 Option 2: Brute force with a GPU and Hashcat.6.1 Option 1: Use some Open Source Intel.3.3 Collecting the authentication handshake with airodump-ng.3.1 Collecting the handshake in Wireshark.
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