Rewritten, more OOP-ish approach using C++17 features here and there

client/inc/Client.hpp

@@ -0,0 +1,14 @@
+#pragma once
+#include <string>
+#include <cstdint>
+
+namespace remramd {
+    class Client {
+        private:
+            void run_netcat_tcp_listener(const std::uint16_t reverse_shell_port);
+        public:
+            void connect(const std::string &server_ip, const std::uint16_t server_port);
+            Client(const Client&) = delete;
+            Client& operator = (const Client&) = delete;
+    };
+}

client/src/Client.cpp

@@ -0,0 +1,21 @@
+#include "../inc/Client.hpp"
+#include "../../shared/inc/Protocol.hpp"
+#include "../../shared/inc/remramd_exception.hpp"
+#include <unistd.h>
+#include <iostream>
+
+namespace remramd {
+    void Client::connect(const std::string &server_ip, const std::uint16_t server_port) {
+        std::cout << "Server => IP: " << server_ip << " | Port: " << server_port << std::endl; 
+        const auto reverse_shell_port { internal::Protocol::request_connection(server_ip, server_port) };
+        run_netcat_tcp_listener(reverse_shell_port);
+    }
+
+    void Client::run_netcat_tcp_listener(const std::uint16_t reverse_shell_port) {
+        const std::string nc_path { "/bin/nc" },
+                          nc_flags { "-nvlp" };
+        const char* const args[] { nc_path.c_str(), nc_flags.c_str(), std::to_string(reverse_shell_port).c_str(), nullptr };
+        execve(nc_path.c_str(), (char* const*)args, nullptr);
+        std::cerr << "FAIL\n";
+    }
+}

client/src/client_main.cpp

@@ -0,0 +1,18 @@
+#include "../inc/Client.hpp"
+#include "../../shared/inc/Connection.hpp"
+#include "../../shared/inc/remramd_exception.hpp"
+#include <iostream>
+
+int main(int argc, char **argv) {
+    if (argc != 3) {
+        std::cerr << "Usage: " << argv[0] << " <server IP> <server port>\n";
+        exit(1);
+    }
+    remramd::Client client_obj {};
+    try {
+        client_obj.connect(argv[1], std::stoi(argv[2]));
+    } catch (const remramd::exception &e) {
+        std::cerr << e.what() << std::endl;
+    }
+    return 0;
+}

install_client.sh

@@ -0,0 +1 @@
+g++ client/src/*.cpp shared/src/*.cpp server/src/PipeWrapper.cpp -lpthread -std=c++17 -O3 -o client/remramd_client

install_server.sh

@@ -0,0 +1,8 @@
+if [[ $EUID -ne 0 ]]; then
+    echo "The server installer must be run as root"
+    exit 1
+fi
+
+g++ server/src/*.cpp shared/src/*.cpp -lpthread -std=c++17 -O3 -o server/remramd_server
+
+cd driver && make && insmod ramd.ko && cd ..