How to Crack a Wi-Fi Network's WEP Password with BackTrack

AIM 

This tutorial aim is to guide you the process of WEP CRACKING On Backtrack 5 

Should have a knowledge of these terms - 

• AP : stands for Access Point or a wireless router .
• MAC Address : stands for ;Media Access Control ,its a unique address , It is in the Hexadecimal format like 00:6B:6B:2F:C8:C8  .
• BSSID : It is the AP Mac Address.
• ESSID : It shows the AP broadcasting name .
• WEP : stands for Wired Equivalency Protocol .
• WEP is a security protocol for Wifi (Wireless fidility) Networks.

Tools used to Crack WEP are  - 

1. iwconfig : A tool that for configure wireless adapter 
2. macchanger : A tool that allow you to spoof your Mac Address.
3. airmon - a tool that set your wireless adapter into monitor mode .
4. airodump - a tool that capture packet from the wireless router.
5. aireplay - a tool for forging ARP request.
6. aircrack - a tool for decrypting WEP keys .

Requirements 

1. Backtrack 5 distro.
2. Wireless Adapter Card 

Lets start the Procedure -

Step 1 : Open a new konsole on Backtrack 5 

• See the image how to open konsole on Backtrack 5 .

Step 2 : Type the command shown below -

• Command 1: ifconfig wlan0
• Command 2: iwconfig wlan0
• See the image below for more details - 

Step 3: Put your Wifi adapter card on Monitor Mode 

• Open a new konsole and enter the command shown below - 
• Type the following command to put your card into Monitor mode .
• Command : airmon-ng start (your interface)
• Example : airmon-ng start wlan0
• A message is also display on the screen that your monitor mode is enabled.
• See the image for more details - 

Step 4: Display the monitor mode .

• New monitor mode created named mon0 
• To see the monitor mode enter the command shown below -
• Command : iwconfig 
• See the image for more details -

Step 5: Finding a Target

• Now we have to find the network that is protected by the WEP .
• To find those networks we use a simple command shown below - 
• Command : airodump-ng mon0 
• Here airodump-ng is the command to start the program
• mon0 is the new interface which you created in the earlier step .
• See the image below for more details -

Step 6: Capture the data into file 

• To capture the data we use airodump tool with additional switches like --bssid ( mac address), -c (channel), -w (filename )
• Syntax of the commands is - 
• Command : airodump-ng mon0 --bssid (Mac Address) -c (channel no.) -w (filename)
• Example : airodump-ng mon0 --bssid 00:08:68:2F:C8:C8 -c 1 -w WEPkey
• See the image below for more details - 

 Step 7: Open Home Directory to check WEPkey file is created or not .

• Open the Home Directory .
• Check your WEPkey file is created or not .
• See the image below - Image shows WEPkey file is created and saved in the home directory.

Step 8: Crack the WEP Key using Aircrack Tool 

• Open a new konsole . 
• Then enter the command  : aircrack-ng (file name)
• Example : aircrack-ng WEPkey-01.cap
• Withing  a minute aircrack will decrypt your WEP key as shown in the image .
• See the image below -

• This is how we can WEP  CRACKING on Backtrack 5 .
• If you like this article , then drop a comment .
• I hope you like this article on WEP CRACKING on Backtrack 5 

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HACK WIFI NETWORK IN WINDOW

FIRSTLY WE KNOW ABOUT HOW TO HACK WIFI PASSWORD AND WHAT TOOL ARE REQUIRED TO HACK WIFI PASSWORD 

TOOL REQUIRED FOR WIFI HACKING:

1. COMMVIEW FOR WIFI :-

this tool is used for capturing the packet of wifi which we have to crack.this is also used for convert the file which is required for crack ( in this crack we convert .ncf file to .cap file)

Downloiad Link click Here Click Here.

2. AIRCRACK -NG :-

this tool is used for retrieve password from captured file from commview for wifi software.

For Download This Software Click Here

STEP TO HACK WIFI NETWORK IN WINDOW:-

1. install commview
2. after installation a popup window is open in commview software for driver installation .( if pop window not open then goto > help > driver installation guide then do this)

3. install commview driver for your wifi network( without installation of driver you cannot capture data of desired wifi network)
4. after installation of driver click on capture button on left corner of software.

5. a pop up window is open and show wifi network near you.
6. select wifi network which you want to hack and click on capture.

you must need to see your connection is wep or not.(this trick only work with wep)
7. after that you can see the commview capture wifi data.

8. now goto to logging panel in commview and tick on auto saving and put
maximum directory size, mb - 2000
average log file size- 20

9. now capture packets for 2-3 hour.( about 1 lakh packet)

STEP TO CONVERT CAPTURED FILE.

open commview and follow step
1. goto file>log viewer
2. after open log viewer
3.goto file> load commview log> select all capture file > then open
4. after opening goto>export logs > select wireshark tcpdump format
5. save file with desired location (this file is used for cracking password)

CRACK PASSWORD USING AIRCRACK-NG:-

1. open download package.
2. goto bin and open aircrack-ng GUI.exe
3. open converted file
4. select key size - 64
5. click on launch
6. index no. of target file is-- 1
7 wait for cracking password
8. if wifi password is cracked then it write
password 100% decerypted 94:13:26:54:66

in this password is 9413265466 for wifi

IF NOT CRACKED IN FIRST ATTEMPT 

1. if password is not cracked then it say FAILED NEXT TRY WITH 5000 IVS.

2. so we have to again capture packets and repeat above process again till password is crack.

NOTE:- when we again capture packet and convert it into cap then we have to select all previous captured packet also to convert.

BE SMART & BEST OF LUCK.

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