install-kali-termux.sh

#!/data/data/com.termux/files/usr/bin/bash
main() {

  pwd=`pwd`

  echo "====Enter Installation Directory===="
  read dir
  installation_dir="$HOME/$dir"
  mkdir $installation_dir
  echo "Installing at $installation_dir"
 
 
  echo "====Checking requirements===="
  pkg install wget proot tar -y


  echo "====Getting Architecture info===="
  case `dpkg --print-architecture` in
    aarch64) archurl="arm64" ;;
    arm) archurl="armhf" ;;
    amd64) archurl="amd64" ;;
    x86_64) archurl="amd64" ;;
    i*86) archurl="i386" ;;
    x86) archurl="i386" ;;
    *) echo "unknown architecture"; exit 1 ;;              
  esac
  echo "You device Architecture is ${archurl}"
  filename="kali-rootfs-${archurl}.tar.xz"
  folder=kali-fs



  echo "====Choose Installation Option===="
  echo "  1) Install Offline"
  echo "  2) Install Online"
  read n
  case $n in
    1) install_offline;;
    2) install_online;;
    *) echo "invalid option";;
  esac


  extract_file
  create_launch_script


  
  echo "Do you want to delete ${filename} file?"
    echo "  1) Yes"
    echo "  2) No"
  read n
  case $n in
    1) rm $filename;;
    2) ;;
    *) ;;
  esac

  echo "====Setup completed successfully==="
  echo "You can now launch Kali with the command start-kali"
}


install_offline() {
  echo "Installing offline.."
  load_file
}

load_file() {
  echo "Loading file from SDcard.."
  storage_path="$HOME/storage"
  if [ ! -d "$storage_path" ]; then
        echo "Setting up storage"
        termux-setup-storage
  fi
  cp /sdcard/$filename $filename
}

install_online() {
  echo "Installing online"
  download_file
}

download_file(){
    echo "Downloading ${filename}, this may take a while base on your internet speed."
    case `dpkg --print-architecture` in
      aarch64) archurl="arm64" ;;
      arm) archurl="armhf" ;;
      amd64) archurl="amd64" ;;
      x86_64) archurl="amd64" ;;
      i*86) archurl="i386" ;;
      x86) archurl="i386" ;;
      *) echo "unknown architecture"; exit 1 ;;
    esac
    wget "https://github.com/AndronixApp/AndronixOrigin/blob/master/Rootfs/Kali/${archurl}/${filename}?raw=true" -O $filename
}

extract_file() {
    cd "$installation_dir"
    mkdir -p "$folder"
    cd "$folder"
    echo "Extracting, please be patient..."
    proot --link2symlink tar -xJf ${pwd}/${filename}||:
    cd "$pwd"
}

create_launch_script() {

echo "=== Creating local launch script===="
cd "$installation_dir"
mkdir -p kali-binds
bin=start-kali
  
cat > $bin <<- EOM
#!/bin/bash
cd \$(dirname \$0)
## unset LD_PRELOAD in case termux-exec is installed
unset LD_PRELOAD
command="proot"
command+=" --link2symlink"
command+=" -0"
command+=" -r $folder"
if [ -n "\$(ls -A kali-binds)" ]; then
    for f in kali-binds/* ;do
      . \$f
    done
fi
command+=" -b /dev"
command+=" -b /proc"
command+=" -b kali-fs/root:/dev/shm"
## uncomment the following line to have access to the home directory of termux
#command+=" -b /data/data/com.termux/files/home:/root"
## uncomment the following line to mount /sdcard directly to / 
#command+=" -b /sdcard"
command+=" -w /root"
command+=" /usr/bin/env -i"
command+=" HOME=/root"
command+=" PATH=/usr/local/sbin:/usr/local/bin:/bin:/usr/bin:/sbin:/usr/sbin:/usr/games:/usr/local/games"
command+=" TERM=\$TERM"
command+=" LANG=C.UTF-8"
command+=" /bin/bash --login"
com="\$@"
if [ -z "\$1" ];then
    exec \$command
else
    \$command -c "\$com"
fi
EOM

echo "Fixing permission"
termux-fix-shebang $bin
chmod +x $bin


echo "====Adding Start Script to Termux bin===="
termux_bin="/data/data/com.termux/files/usr/bin/start-kali"

cat > $termux_bin <<- EOM
#!/data/data/com.termux/files/usr/bin/sh
bash ${installation_dir}/start-kali
EOM

echo "Fixing permission"
chmod +x $termux_bin

}



main "$@"; exit