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aircrack-ng의 명령어로도 조회가 가능하지만, 최종적으로 wips를 만들도록 해야 하기에, 프로그램으로 접근을 해보았다.
아래 예제는 tins라이브러리를 이용한 방식인데, tins라이브러리가 설치되어있지 않다면, 아래의 명령으로 tins라이브러리를 설치하여야 한다.
sudo apt-get install libtins-dev libtins3.4
beacon-display.cpp
/*
* Copyright (c) 2016, Matias Fontanini
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <iostream>
#include <set>
#include <string>
#include <tins/tins.h>
using std::set;
using std::cout;
using std::endl;
using std::string;
using std::runtime_error;
using namespace Tins;
class BeaconSniffer {
public:
void run(const string& iface);
private:
typedef Dot11::address_type address_type;
typedef set<address_type> ssids_type;
bool callback(PDU& pdu);
ssids_type ssids;
};
void BeaconSniffer::run(const std::string& iface) {
SnifferConfiguration config;
config.set_promisc_mode(true);
config.set_filter("type mgt subtype beacon");
config.set_rfmon(true);
Sniffer sniffer(iface, config);
sniffer.sniff_loop(make_sniffer_handler(this, &BeaconSniffer::callback));
}
bool BeaconSniffer::callback(PDU& pdu) {
// Get the Dot11 layer
const Dot11Beacon& beacon = pdu.rfind_pdu<Dot11Beacon>();
// All beacons must have from_ds == to_ds == 0
if (!beacon.from_ds() && !beacon.to_ds()) {
// Get the AP address
address_type addr = beacon.addr2();
// Look it up in our set
ssids_type::iterator it = ssids.find(addr);
if (it == ssids.end()) {
// First time we encounter this BSSID.
try {
/* If no ssid option is set, then Dot11::ssid will throw
* a std::runtime_error.
*/
string ssid = beacon.ssid();
// Save it so we don't show it again.
ssids.insert(addr);
// Display the tuple "address - ssid".
cout << addr << " - " << ssid << endl;
}
catch (runtime_error&) {
// No ssid, just ignore it.
}
}
}
return true;
}
int main(int argc, char* argv[]) {
if (argc != 2) {
cout << "Usage: " <<* argv << " <interface>" << endl;
return 1;
}
string interface = argv[1];
BeaconSniffer sniffer;
sniffer.run(interface);
}
Makefile
CC = g++
INC = -I.
LIBS = -ltins
DFLAGS = -D
CFLAGS = -g -std=c++11 $(INC) $(DFLAGS)
OBJS = beacon-display.o
SRCS = beacon-display.cpp
TARGET = beacon-display
all : $(TARGET)
$(TARGET) : $(OBJS) Makefile
$(CC) -o $@ $(OBJS) $(LIBS)
dep :
gccmakedep $(INC) $(SRCS)
clean :
rm -rf $(OBJS) $(TARGET) core
new :
$(MAKE) clean
$(MAKE)
컴파일 방법은, make dep를 수행한 후에, make를 실행한다.
SSID 조회 결과는 다음과 같다. NUJI_2G와 iptime 이 조회되었다.
$ sudo ./beacon-display wlan0mon
90:9f:33:d3:89:1a - NUJI_2G
00:08:9f:2a:89:ca - iptime
libtins 라이브러리를 사용하면 몇 줄 안되는 코드로 프로그래밍을 할 수 있는데, 나는 이것을 사용하지 않을 것 같다.
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