Extract domains from ip address using nmap ssl-cert script

ssl_domain_scrape

#!/bin/bash

target_ip=$1
[[ -z "$target_ip" ]] && echo "We need target ip" && exit 1

results=$(nmap -p 443 --script ssl-cert $target_ip | grep -oP '(?<=Subject: |Name: ).*')

domains=$(for name in `echo $results`; do
  name=$(echo $name | sed -E 's/:|=/ /g' | awk '{print $NF}') # replace (:) or (=) to space and get last element($NF)
  name=$(echo $name | sed -E 's/\*\.|\,//g') # remove .*(wildcard) and last comma(,)
  name=$(echo $name | sed 's/\r$//g') # cleanup carriage return(CR)
  echo $name
done)

echo "$domains" | sort -u