error using urlsnarf

[voguendi]

Hi ! I wrote this script to sniff on OPN 802.11 networks and extract URLs but it seems that the last part with Urlsnarf doesn't work ! Can you please help me to correct it?

#!/bin/bash
# My first script

#enter functions
press_enterandstop()
{
echo -en "\nPress Enter to continue"
read
#airmon-ng stop mon0
}

press_enternoclear()
{
echo -en "\nPress Enter to continue"
read

}

press_enter()
{
echo -en "\nPress Enter to continue"
read
clear
}


#kill NeworkManager
selection=
until [ "$selection" = "1" ]; do
echo "
NeworkManager
1 - Stop NetworkManager
2 - Restart NetworkManager

0 - exit program"


echo -n "Enter selection: "
read selection
echo ""
case $selection in
1 ) service NetworkManager stop ; press_enter ;;
2 ) service NetworkManager restart ; press_enter ;;
0 ) exit ;;
* ) echo "Please enter 1, 2, or 0"; press_enter
esac
done

echo "Seting monitor mode"
iwconfig
press_enternoclear;

function monitormode(){

echo -n "Type the network interface "
read wlan
airmon-ng start $wlan
}

monitormode;

#Checking the mon interface

#Checking monitor mode
function mon(){

ifconfig -s -a | grep -i "mon"> moninterface.txt
mon=`head -n 1 moninterface.txt | cut -c -4`
echo $mon
press_enternoclear;
echo "Checking injection capabilities"

aireplay-ng -9 $mon

#press_enternoclear;
#Capturing
export CAPT_DIR=/home/leila/bin/captures
export CAPT_DEST=$CAPT_DIR/capture
mkdir -p $CAPT_DIR

airodump-ng -w $CAPT_DEST $mon

press_enternoclear;
}
mon;


#Decrypting the files

function decryptap(){

f=`ls -w 1 $CAPT_DIR/capture-??.cap | tail -n 1`
echo -n "Type the AP "
read ap
airdecap-ng -e "$ap" $f
g=`ls -w 1 $CAPT_DIR/capture-??-dec.cap | tail -n 1`
tcpdump -r $g -vvv > suctest.txt
dsniff -i lo > sniff.txt &
urlsnarf -i lo > url.txt &
tcpreplay -i lo -t $g
echo "finish"
}
decryptap;
airmon-ng stop $mon

[cooper]

Dude, I'm not going to run your script for you. Assuming it doesn't obliterate my network it makes a shitload of assumptions about tools that are present on the system. So here's a thought:

Isolate the specific command that doesn't do what you think it should do. Tell us this command, what it does do (or the error/output it produces) and what it should be doing. Go from there.