@ -29,6 +29,7 @@
# define _LIBVALINET_DEBUG_HOOKING_IATPATCH # define _LIBVALINET_DEBUG_HOOKING_IATPATCH
# endif # endif
# include <valinet/hooking/iatpatch.h> # include <valinet/hooking/iatpatch.h>
# include <valinet/utility/memmem.h>
# define EP_CLSID "{D17F1E1A-5919-4427-8F89-A1A8503CA3EB}" # define EP_CLSID "{D17F1E1A-5919-4427-8F89-A1A8503CA3EB}"
@ -66,6 +67,7 @@ DWORD bClassicThemeMitigations = FALSE;
DWORD bHookStartMenu = TRUE ; DWORD bHookStartMenu = TRUE ;
DWORD bNoMenuAccelerator = FALSE ; DWORD bNoMenuAccelerator = FALSE ;
DWORD bTaskbarMonitorOverride = 0 ; DWORD bTaskbarMonitorOverride = 0 ;
DWORD dwIMEStyle = 0 ;
HMODULE hModule = NULL ; HMODULE hModule = NULL ;
HANDLE hSettingsMonitorThread = NULL ; HANDLE hSettingsMonitorThread = NULL ;
HANDLE hDelayedInjectionThread = NULL ; HANDLE hDelayedInjectionThread = NULL ;
@ -2941,6 +2943,15 @@ void WINAPI LoadSettings(BOOL bIsExplorer)
& bTaskbarMonitorOverride , & bTaskbarMonitorOverride ,
& dwSize & dwSize
) ; ) ;
dwSize = sizeof ( DWORD ) ;
RegQueryValueExW (
hKey ,
TEXT ( " IMEStyle " ) ,
0 ,
NULL ,
& dwIMEStyle ,
& dwSize
) ;
RegCloseKey ( hKey ) ; RegCloseKey ( hKey ) ;
} }
@ -3613,6 +3624,7 @@ HRESULT explorer_DrawThemeTextEx(
# pragma endregion # pragma endregion
# pragma region "Change clock links"
HINSTANCE explorer_ShellExecuteW ( HINSTANCE explorer_ShellExecuteW (
HWND hwnd , HWND hwnd ,
LPCWSTR lpOperation , LPCWSTR lpOperation ,
@ -3640,6 +3652,102 @@ HINSTANCE explorer_ShellExecuteW(
} }
return ShellExecuteW ( hwnd , lpOperation , lpFile , lpParameters , lpDirectory , nShowCmd ) ; return ShellExecuteW ( hwnd , lpOperation , lpFile , lpParameters , lpDirectory , nShowCmd ) ;
} }
# pragma endregion
# pragma region "Change language UI style"
DEFINE_GUID ( CLSID_InputSwitchControl ,
0xB9BC2A50 ,
0x43C3 , 0x41AA , 0xa0 , 0x86 ,
0x5D , 0xB1 , 0x4e , 0x18 , 0x4b , 0xae
) ;
DEFINE_GUID ( IID_InputSwitchControl ,
0xB9BC2A50 ,
0x43C3 , 0x41AA , 0xa0 , 0x82 ,
0x5D , 0xB1 , 0x4e , 0x18 , 0x4b , 0xae
) ;
# define LANGUAGEUI_STYLE_DESKTOP 0
# define LANGUAGEUI_STYLE_TOUCHKEYBOARD 1
# define LANGUAGEUI_STYLE_LOGONUI 2
# define LANGUAGEUI_STYLE_UAC 3
# define LANGUAGEUI_STYLE_SETTINGSPANE 4
# define LANGUAGEUI_STYLE_OOBE 5
# define LANGUAGEUI_STYLE_OTHER 100
char mov_edx_val [ 6 ] = { 0xBA , 0x00 , 0x00 , 0x00 , 0x00 , 0xC3 } ;
char * ep_pf = NULL ;
HRESULT explorer_CoCreateInstanceHook (
REFCLSID rclsid ,
LPUNKNOWN pUnkOuter ,
DWORD dwClsContext ,
REFIID riid ,
LPVOID * ppv
)
{
if ( IsEqualCLSID ( rclsid , & CLSID_InputSwitchControl ) & & IsEqualIID ( riid , & IID_InputSwitchControl ) )
{
HRESULT hr = CoCreateInstance ( rclsid , pUnkOuter , dwClsContext , riid , ppv ) ;
if ( SUCCEEDED ( hr ) )
{
// Pff... how this works:
//
// * This `CoCreateInstance` call will get a pointer to an IInputSwitchControl interface
// (the call to here is made from `explorer!CTrayInputIndicator::_RegisterInputSwitch`);
// the next call on this pointer will be on the `IInputSwitchControl::Init` function.
//
// * `IInputSwitchControl::Init`'s second parameter is a number (x) which tells which
// language switcher UI to prepare (check `IsUtil::MapClientTypeToString` in
// `InputSwitch.dll`). "explorer" requests the "DESKTOP" UI (x = 0), which is the new
// Windows 11 UI; if we replace that number with something else, some other UI will
// be created
//
// * We cannot patch the vtable of the COM object because the executable is protected
// by control flow guard and we would make a jump to an invalid site (maybe there is
// some clever workaround fpr this as well, somehow telling the compiler to place a certain
// canary before our trampoline, so it matches with what the runtime support for CFG expects,
// but we'd have to keep that canary in sync with the one in explorer.exe, so not very
// future proof).
//
// * Taking advantage of the fact that the call to `IInputSwitchControl::Init` is the thing
// that happens right after we return from here, and looking on the disassembly, we see nothing
// else changes `rdx` (which is the second argument to a function call), basically x, besides the
// very `xor edx, edx` instruction before the call. Thus, we patch that out, and we also do
// `mov edx, whatever` here; afterwards, we do NOTHING else, but just return and hope that
// edx will stick
//
// * Needless to say this is **HIGHLY** amd64
char pattern [ 2 ] = { 0x33 , 0xD2 } ;
DWORD dwOldProtect ;
char * p_mov_edx_val = mov_edx_val ;
if ( ! ep_pf )
{
ep_pf = memmem ( _ReturnAddress ( ) , 200 , pattern , 2 ) ;
if ( ep_pf )
{
// Cancel out `xor edx, edx`
VirtualProtect ( ep_pf , 2 , PAGE_EXECUTE_READWRITE , & dwOldProtect ) ;
memset ( ep_pf , 0x90 , 2 ) ;
VirtualProtect ( ep_pf , 2 , dwOldProtect , & dwOldProtect ) ;
}
VirtualProtect ( p_mov_edx_val , 6 , PAGE_EXECUTE_READWRITE , & dwOldProtect ) ;
}
if ( ep_pf )
{
// Craft a "function" which does `mov edx, whatever; ret` and call it
DWORD * pVal = mov_edx_val + 1 ;
* pVal = dwIMEStyle ;
void ( * pf_mov_edx_val ) ( ) = p_mov_edx_val ;
pf_mov_edx_val ( ) ;
}
}
return hr ;
}
return CoCreateInstance ( rclsid , pUnkOuter , dwClsContext , riid , ppv ) ;
}
# pragma endregion
DWORD InjectBasicFunctions ( BOOL bIsExplorer , BOOL bInstall ) DWORD InjectBasicFunctions ( BOOL bIsExplorer , BOOL bInstall )
@ -4161,6 +4269,10 @@ __declspec(dllexport) DWORD WINAPI main(
VnPatchIAT ( hExplorer , " user32.dll " , " SetWindowCompositionAttribute " , explorer_SetWindowCompositionAttribute ) ; VnPatchIAT ( hExplorer , " user32.dll " , " SetWindowCompositionAttribute " , explorer_SetWindowCompositionAttribute ) ;
} }
//VnPatchDelayIAT(hExplorer, "ext-ms-win-rtcore-ntuser-window-ext-l1-1-0.dll", "CreateWindowExW", explorer_CreateWindowExW);
//VnPatchDelayIAT(hExplorer, "ext-ms-win-rtcore-ntuser-window-ext-l1-1-0.dll", "CreateWindowExW", explorer_CreateWindowExW);
if ( dwIMEStyle )
{
VnPatchIAT ( hExplorer , " api-ms-win-core-com-l1-1-0.dll " , " CoCreateInstance " , explorer_CoCreateInstanceHook ) ;
}
# ifdef USE_PRIVATE_INTERFACES # ifdef USE_PRIVATE_INTERFACES
Valentin Radu
4 years ago