![\"How](\"http:\/\/img.gawkerassets.com\/img\/17idgc21242wbjpg\/original.jpg\" "\\"How")
<\/p>\nI read LifeHacker pretty often, I came across this article that was interesting. I tried it and verified it worked so I wanted to post this on my site as well \ud83d\ude42<\/p>\n
Thanks LifeHacker.com<\/p>\n
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You already know that if you want to lock down your Wi-Fi network, you should opt for WPA encryption because WEP is easy to crack. But did you know how easy? Take a look.<\/p>\n
Note: This post demonstrates how to crack WEP passwords, an older and less often used network security protocol. If the network you want to crack is using the more popular WPA encryption, see our guide to cracking a Wi-Fi network’s WPA password with Reaver instead.<\/em><\/p>\n Today we’re going to run down, step-by-step, how to crack a Wi-Fi network with WEP security turned on. But first, a word: Knowledge is power, but power doesn’t mean you should be a jerk, or do anything illegal. Knowing how to pick a lock doesn’t make you a thief. Consider this post educational, or a proof-of-concept intellectual exercise.<\/p>\n Dozens of tutorials on how to crack WEP are already all over the internet using this method. Seriously\u2014Google it. This ain’t what you’d call “news.” But what is surprising is that someone like me, with minimal networking experience, can get this done with free software and a cheap Wi-Fi adapter. Here’s how it goes.<\/p>\n To crack WEP, you’ll need to launch Konsole, BackTrack’s built-in command line. It’s right there on the taskbar in the lower left corner, second button to the right. Now, the commands.<\/p>\n First run the following to get a list of your network interfaces:<\/p>\n The only one I’ve got there is labeled Now, run the following four commands. See the output that I got for them in the screenshot below.<\/p>\n Now it’s time to pick your network. Run:<\/p>\n To see a list of wireless networks around you. When you see the one you want, hit Ctrl+C to stop the list. Highlight the row pertaining to the network of interest, and take note of two things: its BSSID and its channel (in the column labeled CH), as pictured below. Obviously the network you want to crack should have WEP encryption (in the ENC) column, not WPA or anything else.<\/p>\n Now we’re going to watch what’s going on with that network you chose and capture that information to a file. Run:<\/p>\n Where (channel) is your network’s channel, and (bssid) is the BSSID you just copied to clipboard. You can use the Shift+Insert key combination to paste it into the command. Enter anything descriptive for (file name). I chose “yoyo,” which is the network’s name I’m cracking.<\/p>\n You’ll get output like what’s in the window in the background pictured below. Leave that one be. Open a new Konsole window in the foreground, and enter this command:<\/p>\n Here the ESSID is the access point’s SSID name, which in my case is What You’ll Need<\/h3>\n
![\"How](\"http:\/\/cache.gawker.com\/assets\/images\/lifehacker\/2009\/07\/alfa_01.png\" "\\"How")
Unless you’re a computer security and networking ninja, chances are you don’t have all the tools on hand to get this job done. Here’s what you’ll need:<\/p>\n\n
Crack That WEP<\/h3>\n
airmon-ng<\/code><\/p><\/blockquote>\nra0<\/code>. Yours may be different; take note of the label and write it down. From here on in, substitute it in everywhere a command includes (interface).<\/p>\n
\nairmon-ng stop (interface)
\nifconfig (interface) down
\nmacchanger --mac 00:11:22:33:44:55 (interface)
\nairmon-ng start (interface)<\/code><\/p><\/blockquote>\n![\"How](\"http:\/\/img.gawkerassets.com\/img\/17ggkrsub9llbpng\/medium.png\" "\\"How")
<\/a> If you don’t get the same results from these commands as pictured here, most likely your network adapter won’t work with this particular crack. If you do, you’ve successfully “faked” a new MAC address on your network interface, 00:11:22:33:44:55.<\/p>\nairodump-ng (interface)<\/code><\/p><\/blockquote>\n![\"How](\"http:\/\/img.gawkerassets.com\/img\/17ggkrut97td8png\/medium.png\" "\\"How")
<\/a> Like I said, hit Ctrl+C to stop this listing. (I had to do this once or twice to find the network I was looking for.) Once you’ve got it, highlight the BSSID and copy it to your clipboard for reuse in the upcoming commands.<\/p>\nairodump-ng -c (channel) -w (file name) --bssid (bssid) (interface)<\/code><\/p><\/blockquote>\n![\"How](\"http:\/\/img.gawkerassets.com\/img\/17ggkrutbx04dpng\/medium.png\" "\\"How")
<\/a><\/p>\naireplay-ng -1 0 -a (bssid) -h 00:11:22:33:44:55 -e (essid) (interface)<\/code><\/p><\/blockquote>\nyoyo<\/code>. What you want to get after this command is the reassuring “Association successful” message with that smiley face.<\/p>\n
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<\/a><\/p>\n![\"How](\"http:\/\/img.gawkerassets.com\/img\/17ggkrwseb5uipng\/medium.png\" "\\"How")
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