From 9ddb00b140f4af4cbdbc7867d357e6cdb04bc382 Mon Sep 17 00:00:00 2001
From: Hamid <hamid.sadeghian@dw.com>
Date: Thu, 27 Jul 2023 16:59:23 +0000
Subject: [PATCH] Add new file
---
src/netscan/netscan.py | 162 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 162 insertions(+)
create mode 100644 src/netscan/netscan.py
diff --git a/src/netscan/netscan.py b/src/netscan/netscan.py
new file mode 100644
index 0000000..fddbd86
--- /dev/null
+++ b/src/netscan/netscan.py
@@ -0,0 +1,162 @@
+import sys
+import getopt
+import socket, struct
+from netaddr import *
+from datetime import date
+import json, csv
+import subprocess, platform
+import logging
+
+
+today= date.today()
+today_dot = today.strftime('%d.%m.%Y')
+
+logging.basicConfig(filename='logs/log_%s' %today,
+ filemode='w+',
+ format='%(asctime)s %(levelname)s %(message)s',
+ datefmt='%Y-%m-%d %H:%M:%S',
+ level=logging.DEBUG)
+
+version = '1.0'
+verbose = False
+ip_range=[]
+ip_ranges=[]
+alive_devices=[]
+hostname={}
+
+def help():
+
+ print('''
+
+ Scans the specified network to find and list alive nodes.
+
+ Syntax: /usr/bin/python netscan.py [-n Network -p Port -f FilePath ] ...
+
+ example: /usr/bin/python netscan.py -n 192.168.1.0/24 -p 22 -f /etc/output.json
+ /usr/bin/python netscan.py -n 192.168.1.16/30,192.168.2.2/32 -p 22 -f /etc/output.json
+
+ args:
+ -h --help Help.
+ -v --version Shows version.
+ -n --network Network(S) to scan.
+ -f --file-path File path containing file name to save the output.
+ You can write the output in .csv, .txt or .json file formats.
+
+ © 2023 Hamid Sadeghian
+
+ ''')
+
+
+def portscan(ips, port):
+ for ip in ips:
+ sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+ sock.settimeout(1)
+ result = sock.connect_ex((ip, int(port)))
+ if result == 0:
+ alive_devices.append(ip)
+ print(ip, ' port {} is open.'.format(port))
+ logging.info('{} port {} is open.'.format(ip, port))
+ sock.close()
+ return alive_devices
+
+def pingscan(ips):
+ ping_str = '-n 2' if platform.system().lower()=='windows' else '-c 2'
+ need_sh = False if platform.system().lower()=='windows' else True
+ for ip in ips:
+ args = 'ping ' + ' ' + ping_str + ' ' + ip
+ # Ping
+ if subprocess.call(args, shell=need_sh) == 0:
+ alive_devices.append(ip)
+ return alive_devices
+
+def ips(start, end):
+ start = struct.unpack('>I', socket.inet_aton(start))[0]
+ end = struct.unpack('>I', socket.inet_aton(end))[0]
+ return [socket.inet_ntoa(struct.pack('>I', i)) for i in range(start, end)]
+
+def nslook(alive_devices):
+ hostname={}
+ for i in alive_devices:
+ try:
+ p=(socket.getnameinfo((i, 0), socket.NI_NAMEREQD))
+ hostname[i]= p[0]
+ except:
+ hostname[i]= 'no dns record'
+ pass
+ return hostname
+
+def main(argv):
+ file = None
+ networks=[]
+ network=''
+
+ logging.info(' START')
+ opts, args = getopt.getopt(argv[1:],'n:f:p:hv',['help','version','network=','file-path=','port='])
+
+ for opt, arg in opts:
+ if opt in ('-h', '--help'):
+ help()
+ sys.exit()
+ elif opt in ('-v', '--version'):
+ print('Version', version)
+ sys.exit()
+ elif opt in ('-n', '--network'):
+ network = arg
+ networks = network.split(',')
+ elif opt in ('-f', '--file-path'):
+ file = arg
+ elif opt in ('-p', '--port'):
+ port = arg
+
+ if any((not network, not file, not port)):
+ help()
+ print('\nERROR: Mandatory parameter is missing.\n')
+ logging.error('Mandatory parameters are missing.')
+ sys.exit()
+
+ # find out ip ranges
+ for n in networks:
+ ip_ranges = IPNetwork(str(n))
+ for ip in ip_ranges:
+ ip_range.append(str(ip))
+
+ print(networks, 'will be scaned.')
+ logging.info('%s will be scaned.' %networks)
+
+
+ #input('Press Enter to Continue...')
+ alive_devices = portscan(ip_range, port)
+ print(len(ip_range),'IPs scaned.')
+ logging.info('%s IPs scaned.'%len(ip_range))
+
+ hosts = nslook(alive_devices)
+
+ header = ['IP-Address','Hostname']
+
+ try:
+ with open(file, 'w', encoding='UTF8', newline='') as f:
+ if '.json' in file:
+ json.dump(hosts, f, indent=2)
+ elif '.csv' in file:
+ writer = csv.DictWriter(f, fieldnames=header)
+ writer.writeheader()
+ for key in hosts.keys():
+ f.write('%s,%s\n'%(key,hosts[key]))
+ elif '.txt' in file:
+ for key in hosts.keys():
+ f.write('%s %s\n'%(key,hosts[key]))
+ else:
+ print('Unsupported file extension!')
+ logging.error('Unsupported file extension!')
+ logging.info('List of hosts inclusive DNS-Name saved in {}'.format(file))
+
+ except IOError:
+ print('Error occurred while exporting to file: {0}'.format(file))
+ logging.error('Error occurred while exporting to file: {0}'.format(file))
+
+ print('\n',len(hosts),'IP(s) with open port 22 found:',hosts,'\n')
+ logging.info('{} IP(s) with open port 22 found: {}'.format(len(hosts), hosts))
+
+
+if __name__ == '__main__':
+ main(sys.argv)
--
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