How to Hack Wi-Fi: Cracking WPA2-PSK Passwords with Cowpatty

View previous topic View next topic Go down

How to Hack Wi-Fi: Cracking WPA2-PSK Passwords with Cowpatty

Post by Joey-B on Fri Nov 14, 2014 5:55 pm

How to Hack Wi-Fi: Cracking WPA2-PSK Passwords with Cowpatty
Hacking
0

Cowpatty is one of the hundreds of pieces of software that are included in the BackTrack suite of software. For some reason, it was not placed in the /pentest/wireless directory, but instead was left in the /usr/local/bin directory, so let’s navigate there. cd /usr/local/bin

Because cowpatty is in the /usr/local/bin directory and this directory should be in your PATH, we should be able to run it from any directory in BackTrack.

Step 2: Find the Cowpatty Help Screen

To get a brief rundown of the cowpatty options, simply type:
# cowpatty

BackTrack will provide you a brief help screen. Take a note that cowpatty requires all of the following.
# a word list
# a file where the password hash has been captured
# the SSID of the target AP

Step 3: Place the Wireless Adapter in Monitor Mode

airmon-ng start wlan01

Step 4: Start a Capture File

Next, we need to start a capture file where the hashed password will be stored when we capture the 4-way handshake.
# airodump-ng –bssid 00:25:9C:97:4F:48 -c 9 -w cowpatty mon0

This will start a dump on the selected AP (00:25:9C:97:4F:48), on the selected channel (-c 9) and save the the hash in a file named cowcrack. Step 5: Capture the Handshake

Now when someone connects to the AP, we’ll capture the hash and airdump-ng will show us it has been captured in the upper right-hand corner.

1

Step 6: Run the Cowpatty

Now that we have the hash of the password, we can use it with cowpatty and our wordlist to crack the hash.

cowpatty -f /pentest/passwords/wordlists/darkc0de.lst -r /root/cowcrack-01.cap -s Mandela2

1

As you can see in the screenshot above, cowpatty is generating a hash of every word on our wordlist with the SSID as a seed and comparing it to the captured hash. When the hashes match, it dsplays the password of the AP. Step 7: Make Your Own Hash

Although running cowpatty can be rather simple, it can also be very slow. The password hash is hashed with SHA1 with a seed of the SSID. This means that the same password on different SSIDs will generate different hashes. This prevents us from simply using a rainbow table against all APs. Cowpatty must take the password list you provide and compute the hash with the SSID for each word. This is very CPU intensive and slow.

Cowpatty now supports using a pre-computed hash file rather than a plain-text word file, making the cracking of the WPA2-PSK password 1000x faster! Pre-computed hash files are available from the Church of WiFi, and these pre-computed hash files are generated using 172,000 dictionary file and the 1,000 most popular SSIDs. As useful as this is, if your SSID is not in that 1,000, the hash list really doesn’t help us.

In that case, we need to generate our own hashes for our target SSID. We can do this by using an application called genpmk. We can generate our hash file for the “darkcode” wordlist for the SSID “Mandela2″ by typing:

genpmk -f /pentest/passwords/wordlists/darkc0de.lst -d hashes -s Mandela21

Step 8: Using Our Hash

Once we have generated our hashes for the particular SSIDs, we can then crack the password with cowpatty by typing:

cowpatty -d hashfile -r dumpfile -s ssid

Joey-B
MODERATOR
MODERATOR

Posts : 205
Points : 314
Join date : 2014-04-01
Age : 25
Location : Anonymous World Takoradi

Back to top Go down

Re: How to Hack Wi-Fi: Cracking WPA2-PSK Passwords with Cowpatty

Post by Admin on Fri Nov 14, 2014 7:45 pm

Good keep it up

Admin
ADMINISTRATOR
ADMINISTRATOR

Posts : 7980
Points : 24743
Join date : 2013-03-19

http://ghana.bigboardlive.com

Back to top Go down

Re: How to Hack Wi-Fi: Cracking WPA2-PSK Passwords with Cowpatty

Post by yawnana on Sat Nov 15, 2014 11:19 am

i swear...i was about to post this..

yawnana
V.A.M Member
V.A.M Member

Posts : 82
Points : 114
Join date : 2013-06-28

Back to top Go down

Re: How to Hack Wi-Fi: Cracking WPA2-PSK Passwords with Cowpatty

Post by emmaus on Mon Nov 17, 2014 12:54 am

this is only for linux. those using other linux version can search for the package from your package manager.if it isnt in your repository use the following commands to install it

cd ~
wget http://www.wirelessdefence.org/Contents/Files/cowpatty-4.6.tgz
tar zxfv cowpatty-4.6.tgz
cd cowpatty-4.6
make cowpatty
sudo cp cowpatty /usr/bin

must be run with sudo or in su mode

emmaus
MODERATOR
MODERATOR

Posts : 265
Points : 300
Join date : 2013-05-14
Age : 21

Back to top Go down

Re: How to Hack Wi-Fi: Cracking WPA2-PSK Passwords with Cowpatty

Post by Sponsored content Today at 3:39 pm


Sponsored content


Back to top Go down

View previous topic View next topic Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum