Step 4: crack the Wi-Fi password

Now WiFi wireless Internet access has become a method for many netizens to access the Internet. When you get home, you can easily and wirelessly access your laptop, but if you often go south and north, wiFi seems to be rarely used, so many people choose 3G wireless Internet access, but the speed and price of 3G is really not very powerful. Maybe I can watch a movie online, and I will lose a few hundred dollars, therefore, it is more reliable to find free WiFi, and the speed is fast and unlimited traffic. The important thing is not to spend money.


Encrypted WiFi everywhere

In our previous article, "Wi-Fi signals are everywhere! Free Wireless Tips and secrets, is to teach you how to find free "WiFi" around, and free "Hot Spot" Signal Fast signal how to choose, very practical, it can effectively solve the pressing problem, but there are also inconveniences. After all, free hotspots are rare, while encrypted WiFi is everywhere, such as "borrow" when necessary"
I believe it is also excitable. In the following article, I will teach you to crack the Wi-Fi password in a few simple steps. However, based on ethics, do not perform BT or online video operations when using others' WiFi passwords, you can simply browse Web pages or chat to avoid affecting the use of the host. (Note: This tutorial is from a web guru. If it is successful or not, it still depends on the character)

Essential Software for cracking static WEP passwords: netstumbler (wireless signal detection), airodump (capturing data frames), and winaircrack (cracking WEP passwords). Step 1:



First, use netstumbler to check the nearby hotspots and collect data through Wi-Fi signal parameters. Then, use the red box to check that the AP with the SSID name demonalex is of the 802.11b type device, the encryption attribute is 'encrypted '. Based on the algorithm standards supported by 802.11b, this algorithm is determined as WEP. Note that netstumbler is applicable to any wireless site that uses encryption algorithms.
The encryption algorithm identified on the encryption property is the WPA2-AES, for example, the encryption algorithm used by the AP in which the SSID is gzpia.

Step 2 of static WEP password cracking:



Open the ariodump.exe program and follow the operations shown in the preceding figure. First, the program will prompt all wireless network interface interfaces of the local machine, and ask you to enter the ID of the wireless network interface to capture data frames, here I choose to use the buffalownic-number '26' that supports general-purpose drivers. Then the program requires you to enter the type of the wnic chip, most international general-purpose chips currently use a subset of 'hermesi/RealTek '.
'O'; then, you need to enter the channel of the signal to be captured. The channel of the AP to be captured is '6'. The system prompts you to enter the file name and location after the data frame is captured, if no absolute path is specified, the file is stored in the installation directory of winaircrack by default. at the end of the CAP, I used 'last' in the above example. The final winaircrack prompts: 'Do you want to write only the IV [initialization vector] to the CAP file? ', Here I select' No/N'; after confirming the above steps, the program starts to capture data packets. Step 3 of static WEP password cracking:



Step 3 is a long wait until the total number of 'packets 'columns in the table is 300000. Based on the experience of the experiment, when the communication data traffic of the AP is extremely frequent and the data traffic is extremely large, the acceleration of the corresponding value of 'packets 'increases. When the program runs to meet the requirements of 'packets '= 300000, press Ctrl + C to end the process.
. In the installation directory of winaircrack, you will find two files: last.capand last.txt.

Step 4 of static WEP password cracking:



To crack down, execute the winaircrack.exe file first, and click the folder button in the red box *. in the CAP selection dialog box, select the last generated above. cap file, and then click the 'web' button on the right to switch the main interface to the WEP cracking option interface.



Select 'key size' as 64 (currently most users use the wepkey of this length, so this step is entirely based on speculation to select this value), and finally click 'aircrack thekey... 'Click it, and then click it to pop up the process dialog box embedded in cmd.exe, and get the WEP password.



Open the connection parameter settings window of the wireless network card, set the parameter to: SSID: demonalex channel: 6 WEP Key: 1111122222 (64-bit) OK, now you can enjoy free wifi.