wlan

#!/bin/sh
#######################################################
# https://cschad.tech                                 #
# github:https://github.com/AnasBoubechra/Auto-monitor#
#######################################################
set -eu

if [ "$(id -u)" -ne 0 ]; then
  echo "This script must be run as root"
  exit 1
fi

MAC_FORMAT="52:54:%02x:%02x:%02x:%02x"

INTERFACE="wlan0"

wifi_card_down() {
  ifconfig "$INTERFACE" >/dev/null 2>&1 && ifconfig "$INTERFACE" down
}

wifi_card_up() {
  ifconfig "$INTERFACE" >/dev/null 2>&1 && ifconfig "$INTERFACE" up
}

if iwconfig $INTERFACE | grep -q "Mode:Monitor"; then

  # Set INTERFACE to managed mode

  wifi_card_down

  iw dev "$INTERFACE" set type managed

  ip link set dev "$INTERFACE" address "$(printf $MAC_FORMAT $((RANDOM%256)) $((RANDOM%256)) $((RANDOM%256)) $((RANDOM%256)))"

  systemctl start NetworkManager

  wifi_card_up

  iw dev "$INTERFACE" info

  # Print success message

  echo "Wireless INTERFACE $INTERFACE set to managed mode with the original MAC address"

else

  # Set INTERFACE to monitor mode

  wifi_card_down

  systemctl stop NetworkManager

  iw dev "$INTERFACE" set type monitor

  ip link set dev "$INTERFACE" address "$(printf $MAC_FORMAT $((RANDOM%256)) $((RANDOM%256)) $((RANDOM%256)) $((RANDOM%256)))"

  wifi_card_up

  iw dev "$INTERFACE" info

  # Print success message

  echo "Wireless INTERFACE $INTERFACE set to monitor mode with a random MAC address"

fi