Wep0ff – Wireless WEP Key Cracker Tool

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

iwpriv ath0 mode 2
iwconfig ath0 mode master essid foo enc 1122334455 channel 7
echo 1 > /proc/sys/dev/ath0/rawdev
echo 1 > /proc/sys/dev/ath0/rawdev_type
ifconfig ath0
up ifconfig ath0raw up

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