use a hosts list for gobuster's DNS search

gobuster_dns.sh

#!/bin/bash

set -e

if [[ -z "$2" ]]; then
  echo "[!] usage: $0 [HOSTS FILE] [WORDS FILE] [THREADS (optional)]"
  exit
fi

hosts=$1
words=$2
threads=50

if [[ ! -z $3 ]]; then
  threads=$3
fi

for host in $(cat "$hosts"); do
  echo "[*] scanning host $host"
  gobuster -m dns -u "$host" -t "$threads" -w "$words" -i | tee "$host.busted"
done

echo "[*] mission complete"