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+---- Thread: [Python] Simple port scanner using nmap (/showthread.php?tid=6023882)
Simple port scanner using nmap - x1n5h3n - Nov 10, 2019
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 ?
RE: Simple port scanner using nmap - HFDone - Nov 11, 2019
why nmap Port scanner in Python
RE: Simple port scanner using nmap - x1n5h3n - Nov 11, 2019
(Nov 11, 2019 08:43 AM)HFDone Wrote: why nmap Port scanner in Python
To use the power of nmap like getting @Mac, service version, using NSE scripts, etc.
RE: Simple port scanner using nmap - Kallu609 - Nov 11, 2019
You can replace the humongous if-clause with a loop.
RE: Simple port scanner using nmap - x1n5h3n - Nov 11, 2019
(Nov 11, 2019 10:55 AM)Kallu609 Wrote: You can replace the humongous if-clause with a loop.
In helper.py ?
RE: Simple port scanner using nmap - Kallu609 - Nov 11, 2019
(Nov 11, 2019 10:59 AM)x1n5h3n Wrote: In helper.py ?
Yep, you just need some basic math.
RE: Simple port scanner using nmap - x1n5h3n - Nov 11, 2019
(Nov 11, 2019 11:04 AM)Kallu609 Wrote: 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 iRE: Simple port scanner using nmap - Kallu609 - Nov 11, 2019
(Nov 11, 2019 11:13 AM)x1n5h3n Wrote: Thx Kallu609, found a solution !
Great, I also did version of it:
RE: Simple port scanner using nmap - x1n5h3n - Nov 11, 2019
[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']