82 lines
2.3 KiB
C++
82 lines
2.3 KiB
C++
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/*
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*
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* Copyright (c) 2011-2016 The University of Waikato, Hamilton, New Zealand.
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* All rights reserved.
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*
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* This file is part of libprotoident.
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*
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* This code has been developed by the University of Waikato WAND
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* research group. For further information please see http://www.wand.net.nz/
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*
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* libprotoident is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* libprotoident is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*
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*/
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#include <string.h>
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#include "libprotoident.h"
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#include "proto_manager.h"
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#include "proto_common.h"
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static inline bool match_kik(lpi_data_t *data, lpi_module_t *mod UNUSED) {
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/* This rule tries to match the traffic for Kik, a somewhat popular
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* IM app for mobile devices.
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*
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* The problem with Kik is that it uses port 5223 and SSL, so it is
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* very difficult to distinguish from ApplePush
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*/
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if (!match_ssl(data))
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return false;
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/* Port 5223 is used */
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if (data->server_port != 5223 && data->client_port != 5223)
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return false;
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/* The key to matching Kik is bytes 3 and 4 of the incoming SSL
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* handshake packet. They are slightly different to those seen
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* for ApplePush flows.
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*/
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if (MATCH(data->payload[0], 0x16, 0x03, 0x01, 0x0c))
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return true;
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if (MATCH(data->payload[1], 0x16, 0x03, 0x01, 0x0c))
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return true;
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if (MATCH(data->payload[0], 0x16, 0x03, 0x03, 0x0e))
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return true;
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if (MATCH(data->payload[1], 0x16, 0x03, 0x03, 0x0e))
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return true;
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if (MATCH(data->payload[0], 0x16, 0x03, 0x01, 0x0e))
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return true;
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if (MATCH(data->payload[1], 0x16, 0x03, 0x01, 0x0e))
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return true;
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return false;
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}
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static lpi_module_t lpi_kik = {
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LPI_PROTO_KIK,
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LPI_CATEGORY_CHAT,
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"Kik",
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5, /* Should be a higher priority than ApplePush */
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match_kik
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};
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void register_kik(LPIModuleMap *mod_map) {
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register_protocol(&lpi_kik, mod_map);
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}
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