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How to crack a Wi-Fi network's wep encryption

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[hide]Starting the process

Put your Backtrack CD into the computer. Boot from the CD. If it's asking for something wich could be a console, then type in "startx" without quotes. Once your system started do it as it follows:

To crack WEP, you'll need to launch Konsole. It's a big black button.

First run the following to get a list of your network interfaces:

airmon-ng

The only one I've got there is labeled ra0. 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).

---------------------------

Now, run the following four commands. See the output that I got for them in the screenshot below.

airmon-ng stop (interface)

ifconfig (interface) down

macchanger --mac 00:11:22:33:44:55 (interface)

airmon-ng start (interface)

it's not necessary

---------------------------

Now it's time to pick your network. Run:

airodump-ng (interface)

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.

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.

Now we're going to watch what's going on with that network you chose and capture that information to a file. Run:

airodump-ng -c (channel) -w (file name) --bssid (bssid) (interface)

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.

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:

aireplay-ng -1 0 -a (bssid) -h 00:11:22:33:44:55 -e (essid) (interface)

Here the ESSID is the access point's SSID name, which in my case is yoyo. What you want to get after this command is the reassuring "Association successful" message with that smiley face.

Then:

aireplay-ng -3 -b (bssid) -h 00:11:22:33:44:55 (interface)

Here we're creating router traffic to capture more throughput faster to speed up our crack. After a few minutes, that front window will start going crazy with read/write packets. (Also, I was unable to surf the web with the yoyo network on a separate computer while this was going on.) Basically you want to wait until enough data has been collected to run your crack. Watch the number in the "#Data" column—you want it to go above 10,000.

Depending on the power of your network (mine is inexplicably low at -32 in that screenshot, even though the yoyo AP was in the same room as my adapter), this process could take some time. Wait until that #Data goes over 10k, though—because the crack won't work if it doesn't. In fact, you may need more than 10k, though that seems to be a working threshold for many.

Once you've collected enough data, it's the moment of truth. Launch a third Konsole window and run the following to crack that data you've collected:

aircrack-ng -b (bssid) (file name-01.cap)

Here the filename should be whatever you entered above for (file name). You can browse to your Home directory to see it; it's the one with .cap as the extension.

If you didn't get enough data, aircrack will fail and tell you to try again with more. If it succeeds, it will look like this:

The WEP key appears next to "KEY FOUND." Drop the colons and enter it to log onto the network.[/hide]



[email protected]

www.buzasibg.tk

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Posted · Report post

thanks for the share Ill look into testing this when I can find the console commands for mac



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Posted · Report post

okay, i did this on BackTrack and it worked for meONLY FOR WEP ENCRYPTION



[email protected]

www.buzasibg.tk

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cheers for the share gabe, might steal my nextdoor neighbours fiberoptic xDDD



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cool



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woah looks good as, use hide tool:)



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ty



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IS IT DIFFICULT!?!?!!!!



"He who angers you conquers you." -Elizabeth Kenny
"Nobody changes until the pain of staying the same becomes greater than the pain of change"
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