python3-port-scanner.py

import socket
import re

print(r""" ____    ____       _____        _____    ____   ____  _____   ______    ____   ____       _____        _____   
|    |  |    |  ___|\    \   ___|\    \  |    | |    ||\    \ |\     \  |    | |    |  ___|\    \   ___|\    \  
|    |  |    | |    |\    \ |    |\    \ |    | |    | \\    \| \     \ |    | |    | /    /\    \ |    |\    \ 
|    | /    // |    | |    ||    | |    ||    |_|    |  \|    \  \     ||    | |    ||    |  |    ||    | |    |
|    |/ _ _//  |    | |    ||    |/____/ |    .-.    |   |     \  |    ||    | |    ||    |  |____||    |/____/ 
|    |\    \'  |    | |    ||    |\    \ |    | |    |   |      \ |    ||    | |    ||    |   ____ |    |\    \ 
|    | \    \  |    | |    ||    | |    ||    | |    |   |    |\ \|    ||    | |    ||    |  |    ||    | |    |
|____|  \____\ |____|/____/||____| |____||____| |____|   |____||\_____/||\___\_|____||\ ___\/    /||____| |____|
|    |   |    ||    /    | ||    | |    ||    | |    |   |    |/ \|   ||| |    |    || |   /____/ ||    | |    |
|____|   |____||____|____|/ |____| |____||____| |____|   |____|   |___|/ \|____|____| \|___|    | /|____| |____|
                                                                                           |____|/               """)
print("\n*************************************************")
print("\n* Twitter : https://twitter.com/UcarKadirhan    *")
print("\n* GitHub : https://github.com/kdrhnucr          *")
print("\n*************************************************")
print ("")



ip_model = re.compile(r"^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$")
port_model = re.compile("([0-9]+)-([0-9]+)")

min_port = 0
max_port = 65535

open_ports = []

while True:
    ip = input("Please enter IP adress (or localhost): ")
    if ip_model.search(ip):
        print(f"{ip} is a IP address to scan")
        break

while True:
    print("Please enter the range of ports in format: (example would be 10-30)")
    port_range = input("Enter desired port range: ")
    port_range_valid = port_model.search(port_range.replace(" ",""))
    if port_range_valid:
        min_port = int(port_range_valid.group(1))
        max_port = int(port_range_valid.group(2))
        break

for port in range(min_port, max_port + 1):
    try:
        with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
            s.settimeout(0.8)
            s.connect((ip, port))
            open_ports.append(port)

    except:
        pass

for port in open_ports:
        print(f"Port {port} is OPEN on {ip}.")