79 lines
2.9 KiB
C++
79 lines
2.9 KiB
C++
/*
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* Copyright (c) 2017, Matias Fontanini
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <tins/tins.h>
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#include <iostream>
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#include <set>
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#include <string>
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using namespace Tins;
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// BSSIDs which we've already seen
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std::set<HWAddress<6>> addrs;
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// This will be the content of the OUI field in the vendor specific
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// tagged option if it's a WPS tag.
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const HWAddress<3> expected_oui("00:50:F2");
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bool handler(const PDU& pdu) {
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const Dot11Beacon& beacon = pdu.rfind_pdu<Dot11Beacon>();
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// Only process it once
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if(addrs.insert(beacon.addr3()).second) {
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// Iterate the tagged options
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for(const auto& opt : beacon.options()) {
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// Is this a vendor-specific tag?
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if(opt.option() == Dot11::VENDOR_SPECIFIC) {
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// Make sure there's enough size for the OUI + identifier
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if(opt.data_size() >= 4) {
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// Retrieve the OUI field
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HWAddress<3> addr = opt.data_ptr();
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// Are we interested in this OUI and is it a WPS tag?
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if(addr == expected_oui && opt.data_ptr()[3] == 0x04) {
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std::cout << "[+] Access point: " << beacon.ssid() << " uses WPS\n";
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}
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}
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}
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}
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}
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return true;
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}
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int main(int argc, char* argv[]) {
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if(argc != 2) {
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std::cout << "Usage: " <<* argv << " <DEVICE>\n";
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return 1;
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}
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// Only sniff beacons
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SnifferConfiguration config;
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config.set_snap_len(2000);
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config.set_promisc_mode(true);
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config.set_filter("wlan type mgt subtype beacon");
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Sniffer sniffer(argv[1], config);
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sniffer.sniff_loop(handler);
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}
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