19 January 2007 | 511,791 views

Wep0ff – Wireless WEP Key Cracker Tool

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Wep0ff is new tool to crack WEP-key without access to AP by mount fake access point attack against WEP-based wireless clients.

It uses combination of fragmentation and evil twin attacks to generate
traffic which can be used for KoreK-style WEP-key recovery.

This tool can be used to mount fake access point attack against WEP-based wireless clients.

This code tested patched madwifi-old drivers with athraw support, but also works with madwifi-ng. With madwifi-ng you need to create two virtual interfaces: one in master mode (for fake AP) and second in monitor mode (to listen on).

How to Use:
1. Setup fake AP with KARMA tools or iwconfig

2. Start this program (./wep0ff ath0raw 00:01:02:03:04:05)
3. Wait until client connect to fake access point
4. Launch airodump-ng to collect packets
5. Launch aircrack-ng to recover WEP key

You can download it here:

Wep0ff



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19 Responses to “Wep0ff – Wireless WEP Key Cracker Tool”

  1. jimmy 7 February 2007 at 11:01 pm Permalink

    hi what os is this used on?

  2. Gouki 8 February 2007 at 3:09 am Permalink

    GNU/Linux

  3. DotSlashZero 1 June 2007 at 9:20 pm Permalink

    Can it be used on Cygwin?
    i have a fedora in another computer but i’d do better in my laptop in which i only have cygwin… i gess i’d have to install a lot of software huh?
    like iwconfig or something?

  4. Darknet 3 June 2007 at 9:41 am Permalink

    DotSlashZero: I don’t tend to use tools like this on Cygwin as they require native driver support, which windows doesn’t give. I would suggest setting up a VMWare image of a Linux install or just use a liveCD like Backtrack to access tools like this.

  5. DotSlashZero 3 June 2007 at 1:13 pm Permalink

    VMWare image of a Linux? is that like a virtual linux within windows? i have a linux version called DSL Damn Small Linux and i think it does that… am i right?

  6. Chris 29 November 2007 at 5:12 pm Permalink

    What of a Wepkey crack for windows?

  7. yogesh 19 April 2008 at 8:41 pm Permalink

    good

  8. Hyper 29 April 2008 at 2:19 pm Permalink

    Does these tools (airodump-ng, KARMA tools or iwconfig,aircrack-ng) work with all wireless cards. Because i have tried some other tools before and had to be atheros wireless card (something like this)

  9. bob 27 July 2008 at 2:59 am Permalink

    hey dudes once you have a wep key how do you recover the original password from that

  10. shakezz 6 August 2008 at 7:54 am Permalink

    i have a windows vista laptop and no wep hack programs seem to be compatible, can somebody suggest one.

  11. winx 15 August 2008 at 1:35 pm Permalink

    most tools like this tend to require specific wifi cards (usb afaik just aint good enough) with specific chips atheros and prisim chips are (to my knowledge) the most widely used. look hard enough and you’ll find which ones are compatible with wep cracking tools

  12. sunny 28 August 2008 at 7:05 pm Permalink

    i want this software comfortabe for win vista and wireless (dell wireless 1395 wlan mini card)

  13. maysiool 5 December 2008 at 9:25 pm Permalink

    nice and good for everybody

  14. k-ryder 9 December 2008 at 10:11 pm Permalink

    i have toshiba satellite laptop with Vista premium. will this program work on my pc or do i have to get another cpu like my IBM

  15. wepkey 23 December 2008 at 1:06 am Permalink

    hey men so how could we get this baby working im using windows vista your help is much appriciated thankx

  16. navin 23 December 2008 at 12:50 pm Permalink

    people ought to learn to read!! Dear Mr. wepkey, Wep0ff runs on the Linux OS, and does not run on the Windows Vista OS

    As such U need to either, a) install linux on your comp/lappy
    b)use a live CD (Backtrack is recommended by most L337 h@xors)
    c)Create a virtual drive using a tool like wubi (for ubuntu) on your system and install and run Linux off it

    Using these steps you can , as you put it, “get this baby working”

    n00b <– That my friend, is a complement of the highest order for people like U!! ;)

  17. Bogwitch 23 December 2008 at 2:00 pm Permalink

    Heh – I thought all the morons asking for Vista versions were trolling.

    That’s the Interwebs for ya!

  18. avinash 27 March 2009 at 8:24 am Permalink

    which type of file or softwar .tar

  19. 3p1c 7 April 2009 at 6:17 pm Permalink

    i’ve got a toshiba satellite with a 802.11a/g/n wireless, i been obtaining a few connections locally, i was wondering if you could help :D