Create isretailready-false.wh.cpp (#741)

mods/isretailready-false.wh.cpp

@@ -0,0 +1,74 @@
+// ==WindhawkMod==
+// @id              isretailready-false
+// @name            SecureBoot Warning Watermark Enabler
+// @description     Enables the normally hidden "SecureBoot isn't configured correctly" watermark
+// @version         1
+// @author          Jevil7452
+// @github          https://github.com/Jevil7452
+// @include         explorer.exe
+// ==/WindhawkMod==
+
+// ==WindhawkModReadme==
+/*
+Certain versions of Windows starting with 8 have code for a SecureBoot watermark, which is usually hidden in normal circumstances, even if SecureBoot is off. It can be forcefully enabled by making a function (CDesktopWatermark::s_IsRetailReady) return false.
+![Watermark](https://i.imgur.com/k0giME6.png)
+
+It may not work with all versions of Windows.
+
+Tested on:
+- 1703 (Windhawk Mod) - worked fine
+- 1803 (shell32.dll patch) - worked fine
+- 1809 (Windhawk Mod) - worked fine
+- 21H2 (Windhawk Mod) - the watermark enabled but the warning wasn't there - missing text resources?
+*/
+// ==/WindhawkModReadme==
+
+#include <windhawk_utils.h>
+
+#ifdef _WIN64
+#define CALCON __cdecl
+#define SCALCON L"__cdecl"
+#else
+#define CALCON __thiscall
+#define SCALCON L"__thiscall"
+#endif
+
+typedef BOOL (* WINAPI CDesktopWatermark__s_IsRetailReady_t)(void *);
+CDesktopWatermark__s_IsRetailReady_t CDesktopWatermark__s_IsRetailReady_orig;
+BOOL WINAPI CDesktopWatermark__s_IsRetailReady_hook(void *pThis)
+{
+    //Wh_Log(L"Got here");
+    return FALSE;
+    }
+//It seems like it's the same function that would control the Microsoft Confidential watermark in builds that have it
+
+BOOL Wh_ModInit(void)
+{   
+    HMODULE hShell32 = LoadLibraryW(L"shell32.dll");
+    if (!hShell32)
+    {
+        Wh_Log(L"Failed to load shell32.dll");
+        return FALSE;
+    }
+
+    WindhawkUtils::SYMBOL_HOOK hooks[] = {
+
+        {
+            {
+                L"private: static bool "
+                SCALCON
+                L" CDesktopWatermark::s_IsRetailReady(void)"
+            },
+            &CDesktopWatermark__s_IsRetailReady_orig,
+            CDesktopWatermark__s_IsRetailReady_hook,
+            false
+        }
+    };
+
+    if (!HookSymbols(hShell32, hooks, ARRAYSIZE(hooks)))
+    {
+        Wh_Log(L"Failed to hook one or more symbol functions");
+        return FALSE;
+    }
+    return TRUE;
+}