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Scan and save network hosts ports output autmatically. Needs nmap installed.
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| #! /usr/bin/bash | |
| # Script to scan hosts ports using NMAP | |
| # Created by: Benjamin Calisto <[email protected]> | |
| check_nmap_installation() { | |
| is_nmap_installed=$(command -v nmap > /dev/null && echo 1 || echo 0) | |
| if [ "$is_nmap_installed" -eq 0 ] ; then | |
| echo "nmap is not installed" | |
| exit 1 | |
| fi | |
| } | |
| check_network() { | |
| regex="^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)(\/([0-9]|[1-2][0-9]|3[0-2]))?$" | |
| if [ "$1" = "" ] ; then | |
| echo "No network target to scan. Example: 192.168.0.1/24" | |
| exit 1 | |
| fi | |
| if [[ ! $1 =~ $regex ]] ; then | |
| echo "Invalid network or subnet. Example: 192.168.0.1/24" | |
| exit 1 | |
| fi | |
| } | |
| { | |
| check_nmap_installation | |
| check_network "$1" | |
| } | |
| addresses="$(sudo nmap -n -sn "$1" -oG - | awk '/Up$/{print $2}')" | |
| current_timestamp="$(date '+%s')" | |
| if [ ! -d "logs" ] ; then | |
| mkdir "logs" | |
| fi | |
| echo "$addresses" > "logs/ips_dump_$current_timestamp.txt" | |
| dump_file="logs/scan_dump_$current_timestamp.log.md" | |
| { | |
| printf "# NMAP Scans\n\n" | |
| echo "## Hosts summary" | |
| printf "\n%s\n\n" "$( | |
| while IFS= read -r addr | |
| do | |
| if [ "$addr" != "" ] ; then | |
| echo "- $addr" | |
| fi | |
| done <<< "$addresses" | |
| )" | |
| printf "## Unit scans\n\n" | |
| } >> "$dump_file" | |
| code_block_wrapper_chars="\`\`\`" | |
| # shellcheck disable=SC2183 | |
| vertical_divider=$(printf "%*s" "$(tput cols)" | tr " " "-") | |
| while IFS= read -r ipv4 | |
| do | |
| if [ "$ipv4" != "" ] ; then | |
| { | |
| printf "### Results for host %s\n\n" "$ipv4" | |
| printf "%s\n" "$code_block_wrapper_chars" | |
| } >> "$dump_file" | |
| sudo nmap -sV -O "$ipv4" | tee -a "$dump_file" | |
| printf "\n%s\n\n" "$vertical_divider" | |
| printf "%s\n\n" "$code_block_wrapper_chars" >> "$dump_file" | |
| fi | |
| done <<< "$addresses" |
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