/*************************************************************************** * ncrack_sip.cc -- ncrack module for the SIP protocol * * * ***********************IMPORTANT NMAP LICENSE TERMS************************ * * * The Nmap Security Scanner is (C) 1996-2011 Insecure.Com LLC. Nmap is * * also a registered trademark of Insecure.Com LLC. This program is free * * software; you may redistribute and/or modify it under the terms of the * * GNU General Public License as published by the Free Software * * Foundation; Version 2 with the clarifications and exceptions described * * below. This guarantees your right to use, modify, and redistribute * * this software under certain conditions. If you wish to embed Nmap * * technology into proprietary software, we sell alternative licenses * * (contact sales@insecure.com). 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See the GNU * * General Public License v2.0 for more details at * * http://www.gnu.org/licenses/gpl-2.0.html , or in the COPYING file * * included with Nmap. * * * ***************************************************************************/ #include "ncrack.h" #include "nsock.h" #include "NcrackOps.h" #include "Service.h" #include "modules.h" using namespace std; extern NcrackOps o; extern void ncrack_read_handler(nsock_pool nsp, nsock_event nse, void *mydata); extern void ncrack_write_handler(nsock_pool nsp, nsock_event nse, void *mydata); extern void ncrack_module_end(nsock_pool nsp, void *mydata); static int sip_loop_read(nsock_pool nsp, Connection *con); typedef struct sip_info { int cseq; } sip_info; enum states { SIP_INIT, SIP_STATUS }; #define SIP_TIMEOUT 10000 void ncrack_sip(nsock_pool nsp, Connection *con) { nsock_iod nsi = con->niod; Service *serv = con->service; sip_info *info = NULL; struct sockaddr_storage local; struct sockaddr_in *local4 = NULL; struct sockaddr_in6 *local6 = NULL; int family = 0; local4 = (struct sockaddr_in *)&local; local6 = (struct sockaddr_in6 *)&local; u16 localport = 0; char localport_s[6]; char cseq_s[6]; if (con->misc_info) { info = (sip_info *) con->misc_info; } else { info = (sip_info *) safe_zalloc(sizeof(sip_info)); info->cseq = 0; } switch (con->state) { case SIP_INIT: nsock_iod_get_communication_info(nsi, NULL, &family, (struct sockaddr*)&local, NULL, sizeof(struct sockaddr_storage)); if (family == AF_INET6) { localport = ntohs(local6->sin6_port); } else { localport = ntohs(local4->sin_port); } snprintf(localport_s, sizeof(localport_s), "%d", localport); printf("local port %s \n", localport_s); snprintf(cseq_s, sizeof(cseq_s), "%d", info->cseq); if (con->outbuf) delete con->outbuf; con->outbuf = new Buf(); con->outbuf->snprintf(strlen(serv->target->NameIP()) + strlen("192.168.25.1") + strlen(localport_s) + strlen(con->user) \ + strlen(serv->target->NameIP()) + strlen(con->user) + strlen(serv->target->NameIP()) + strlen(serv->target->NameIP()) \ + strlen(cseq_s) + strlen("REGISTER sip: SIP/2.0\r\nVia: SIP/2.0/TCP :\r\nFrom: \r\nTo: \r\n" "Call-ID: 1234@\r\nCSeq: REGISTER\r\nContent-Length: 0\r\n\r\n"), "REGISTER sip:%s SIP/2.0\r\n" "Via: SIP/2.0/TCP %s:%d\r\n" "From: \r\n" "To: \r\n" "Call-ID: 1234@%s\r\n" \ "CSeq: %i REGISTER\r\n" "Content-Length: 0\r\n\r\n", serv->target->NameIP(), "192.168.25.1", localport, con->user, serv->target->NameIP(), con->user, serv->target->NameIP(), serv->target->NameIP(), info->cseq); info->cseq++; con->state = SIP_STATUS; nsock_write(nsp, nsi, ncrack_write_handler, SIP_TIMEOUT, con, (const char *)con->outbuf->get_dataptr(), con->outbuf->get_len()); break; case SIP_STATUS: if (sip_loop_read(nsp, con) < 0) break; printf("---------------memprint-------------\n"); memprint((const char *)con->inbuf->get_dataptr(), con->inbuf->get_len()); printf("---------------memprint-------------\n"); break; } } static int sip_loop_read(nsock_pool nsp, Connection *con) { if (con->inbuf == NULL) { nsock_read(nsp, con->niod, ncrack_read_handler, SIP_TIMEOUT, con); return -1; } if (!memsearch((const char *)con->inbuf->get_dataptr(), "\r\n\r\n", con->inbuf->get_len())) { nsock_read(nsp, con->niod, ncrack_read_handler, SIP_TIMEOUT, con); return -1; } return 0; }