Decrypt WiFI DNS traffic

main.cpp

#include <tins/tins.h>
#include <iostream>

using std::cout;
using std::endl;

using namespace Tins;

Crypto::WPA2Decrypter decrypter;

bool callback(PDU &pdu) {
  auto decrypted = decrypter.decrypt(pdu);

  auto dns = pdu.rfind_pdu<RawPDU>().to<DNS>();
  if (dns.type() == DNS::QUERY) {
    for (const auto &query : dns.queries()) {
      auto name = query.dname();
      cout << name << std::endl;
    }
  }
  return true;
}

int main(int argc, char *argv[]) {
  SnifferConfiguration config;
  config.set_promisc_mode(true);
  config.set_rfmon(true);
  config.set_timeout(5000);

  decrypter.add_ap_data("password", "wifissid", "00:00:00:00:00:00");

  Sniffer sniffer("en0", config);
  sniffer.set_timeout(5000);
  cout << "Sniffing en0" << endl;
  sniffer.sniff_loop(callback);
}