[x1n5h3n]

Here is a first version of a simple scanner using nmap and standards libraries.
pytyhon2 and python3 compatible.

The next version will allow to export results in HTML.

Asking review of this first version.

scanner.py

Code

import sys
import argparse
import nmap

#Set DEBUG
DEBUG = False
#List immutable for args
input = set()

def parse_arguments():
   """Define possible arguments"""
   desc = """Port scanner outputting its results as an HTML page."""
   #use argparse to parse args
   parser = argparse.ArgumentParser(prog='scanner.py', description=desc)
   parser.add_argument('-o', '--host',
       metavar='Hostanme',
       help='host name ex: google.com',
       nargs='+')
   parser.add_argument('-i', '--ip',
       metavar='IP',
       help='ipv4/ipv6 address ex: 192.168.0.1',
       nargs='+')
   parser.add_argument('-c', '--cidr',
       metavar='CIDR',
       help='CIDR notation ex: 192.168.0.0/24',
       nargs='+')
   parser.add_argument('-f', '--file',
       metavar='File',
       help='file containing a target list (host, ip, cidr)',
       type=argparse.FileType('r'),
       nargs='+')  
   #parse args
   args_tolist(parser, parser.parse_args())

def file_tolist(args):
   """Words from file to list"""
   for file in args.file:
       for line in file:
           for word in line.split():
               input.add(word)
   
def args_tolist(parser, args):
   """Arguments to list"""
   try:
       if args.host is not None:
           for host in args.host:
               input.add(host)
       if args.ip is not None:
           for ip in args.ip:
               input.add(ip)
       if args.cidr is not None:
           for cidr in args.cidr:
               input.add(cidr)
       if args.file is not None:
           file_tolist(args)
   except:
       print('Input not reconize !\n')
       parser.print_help()
       sys.exit(1)
   if DEBUG:
       print(input)

def scann():
   """Main function"""
   parse_arguments()
   nmap.open(input)

if __name__ == '__main__':
   scann()

nmap.py

Code

import parse
import shlex, subprocess

def open(targets):
   """Execute nmap"""
   #nmap options
   options = " -v "
   #make cmd readable by subprocess.Popen
   cmd = shlex.split("sudo nmap" + options + ' '.join(targets))
   #create a nmap process
   process = subprocess.Popen(cmd, stdout=subprocess.PIPE)
   parse.displayprocess(process, targets)

helper.py

Code

def numberofip(targets):
    i = 0
    for e in targets:
        if "/" in e:
            (ip, cidr) = e.split("/")
            cidr = int(cidr)
            i += 2**(32-cidr)
        else:
            i += 1
    return i

def progress(count, total, suffix=''):
   """Display a progress bar"""
   #width of the bar
   bar_len = 20
   filled_len = int(round(bar_len * count / float(total)))
   percents = round(100.0 * count / float(total), 1)
   bar = '=' * filled_len + '-' * (bar_len - filled_len)
   print('[%s] %s%s \t %s\r' % (bar, percents, '%', suffix))

parse.py

Code

import helper
import re


def displayprocess(process, targets):
   """Display process"""
   #get number of scan
   nb = helper.numberofip(targets) + 1
   #progression counter
   i = 0
   #open ports
   p = 0
   #while the process running
   while process.poll() is None:
       #add output line to line
       line = process.stdout.readline()
       #if line contain Starting
       if "Starting" in line:
           helper.progress(i, nb, re.sub(r'\([^)]*\)', '', line.replace('\n', '')))
       elif "Discovered" in line:
           continue
       elif "Nmap scan report" in line:
           i += 1
           helper.progress(i, nb, "Scanning " + re.sub(r'Nmap scan report for ', '', line.replace('\n', '')))
       elif "All " in line:
           helper.progress(i, nb, "All " + re.search('\d+', line).group() + " scanned ports are closed")
       elif "open" in line:
           p += 1
           helper.progress(i, nb, "Port " + re.search('\d+', line).group() + " open")
       elif "Nmap done" in line:
           i = nb
           helper.progress(i, nb, re.sub(r'Nmap done: ', '', line.replace('\n', '')))
   print("\nResult: %d open port(s) found !" %(p))

Can be run like that: python scanner.py -o google.com -i 192.168.1.1 -c 192.168.1.0/24

---

And, do you know how can I deploy it in production in a secure way ?

[HFDone]

why nmap Port scanner in Python

[x1n5h3n]

why nmap Port scanner in Python

To use the power of nmap like getting @Mac, service version, using NSE scripts, etc.

[Kallu609]

You can replace the humongous if-clause with a loop.

[x1n5h3n]

You can replace the humongous if-clause with a loop.

In helper.py ?

[Kallu609]

In helper.py ?

Yep, you just need some basic math.

[x1n5h3n]

Yep, you just need some basic math.

Thx Kallu609, found a solution !

Code

def numberofip(targets):
    i = 0
    for e in targets:
        if "/" in e:
            (ip, cidr) = e.split("/")
            cidr = int(cidr)
            i += 2**(32-cidr)
        else:
            i += 1
    return i

[Kallu609]

Thx Kallu609, found a solution !

Great, I also did version of it:

[x1n5h3n]

[quote='Kallu609' pid='59136765' dateline='1573496904']

Great, I also did version of it: ...

I use else: i += 1 because my input can be:
['192.168.0.1','192.168.0.0/24','google.com']