LAN Scanner

[Amirio]

[php]
#!/usr/bin/python

# !!! Install package python-scapy before you use it !!!

# Simple LAN Scanner
# by Valentin Hoebel ([email protected])
# Version 1.0 (08th January 2011)

# ASCII FOR BREAKFAST

# ---------- [Description]
# A very simple LAN scanner which shows MAC and IP addresses.

# ---------- [Features]
# - Shows you the MAC and IP of a running system.
# - Creates a small log file.

# ---------- [Usage example]
# sudo ./simple_lan_scan.py --network=192.168.1.0/24

# ---------- [Tested with]
# - Python 2.6.5

# ---------- [Notes]
# - This tool was developed using a Python 2.6.5 interpreter.
# - Modify, distribute, share and copy this code in any way you like!
# - Please note that this tool was created and published for educational purposes only.

# Power to the cows!

import sys, getopt
from scapy.all import srp,Ether,ARP,conf
from time import gmtime, strftime

def print_usage():
print_banner()
print "[!] Wrong argument and parameter passed. Use --help for more information."
print "[!] Usage: sudo ./simple_lan_scan.py --network=<your network>"
print "[i] Usage Example: sudo ./simple_lan_scan.py --network=192.168.1.0/24"
print ""
print ""
sys.exit()
return

def print_help():
print_banner()
print ""
print "[Description]"
print "The Simple LAN Scanner tries to show you"
print "the MAC and IP addresses of all running systems"
print "in your local network."
print ""
print "[Usage]"
print "sudo ./simple_lan_scan.py --network=<your network>"
print ""
print "[Usage example]"
print "sudo ./simple_lan_scan.py --network=192.168.1.0/24"
print ""
print "[Feature list]"
print "- Shows you the MAC and IP of a running system."
print "- Creates a small log file."
print ""
print "[Installation]"
print "- Requires package python-scapy."
print ""
print "[Some notes]"
print "- Tested with Python 2.6.5."
print "- Modify, distribute, share and copy the code in any way you like!"
print "- Please note that this tool was created for educational purposes only."
print "- Do not use this tool in an illegal way. Know and respect your local laws."
print "- Power to teh c0ws!"
print ""
print ""
sys.exit()
return

def print_banner():
print ""
print ""
print "Simple LAN Scanner"
print "by Valentin Hoebel ([email protected])"
print ""
print "Version 1.0 (08th January 2011)"
print "_________________________________________________ ___"
print ""
return

def scan_lan(scan_network):
conf.verb=0
ans,unans=srp(Ether(dst="ff:ff:ff:ff:ff:ff")/ARP(pdst=scan_network),timeout=2)
print ""

log_file=strftime("%d_%b_%Y_%H:%M:%S_+0000", gmtime()) + "_-_scan.log"
FILE = open(log_file, "w")
FILE.write("Simple LAN Scanner - Log File\n")
FILE.write("----------------------------------------\n")
FILE.write("[+] Scanned network: " + scan_network + "\n")
FILE.write("[+] Scan time: " + strftime("%d %b %Y, %H:%M:%S +0000 GMT", gmtime()) + "\n")
FILE.write("\n")

for snd,rcv in ans:
mac_address=rcv.sprintf("%Ether.src%")
ip_address=rcv.sprintf("%ARP.psrc%")

print rcv.sprintf("[+] Found a system! MAC: %Ether.src% IP: %ARP.psrc% ")
FILE.write(ip_address + ", " + mac_address + "\n")

FILE.write("\n")
FILE.close
print ""
print "[i] Completed the scan. Exiting now!"
print ""
print ""
return


def main(argv):
scan_network=""

try:
opts, args = getopt.getopt(sys.argv[1:], "", ["help", "network="])
except getopt.GetoptError :
print_usage()
sys.exit(2)

for opt, arg in opts:
if opt in ("--help"):
print_help()
break
sys.exit(1)
elif opt in ("--network") :
scan_network=arg

if len(scan_network) < 1:
print_usage()
sys.exit()

print_banner()
print "[i] Provided network to scan: " + scan_network
scan_lan(scan_network)

if __name__ == "__main__":
main(sys.argv[1:])
### EOF ###
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