/// <summary>
/// Create environment for future remote procedure calls
///
/// _userData layout (x86/x64):
/// --------------------------------------------------------------------------------------------------------------------------
/// | Internal return value | Return value | Last Status code | Event handle | Space for copied arguments and strings |
/// -------------------------------------------------------------------------------------------------------------------------
/// | 8/8 bytes | 8/8 bytes | 8/8 bytes | 16/16 bytes | |
/// --------------------------------------------------------------------------------------------------------------------------
/// </summary>
/// <param name="noThread">Create only codecave and sync event, without thread</param>
/// <returns>Status</returns>
NTSTATUS RemoteExec::CreateRPCEnvironment( bool noThread /*= false*/ )
{
NTSTATUS dwResult = STATUS_SUCCESS;
DWORD thdID = 0;
bool status = true;
//
// Allocate environment codecave
//
if (!_workerCode.valid())
_workerCode = _memory.Allocate( 0x1000 );
if (!_userData.valid())
_userData = _memory.Allocate( 0x4000, PAGE_READWRITE );
if (!_userCode.valid())
_userCode = _memory.Allocate( 0x1000 );
// Create RPC thread and sync event
if (noThread == false)
thdID = CreateWorkerThread();
else
// Randomize thread id for event name
thdID = GetTickCount();
auto& barrier = _proc.core().native()->GetWow64Barrier();
if (barrier.type != wow_32_64)
status = CreateAPCEvent( thdID );
if ((noThread == false && thdID == 0) || status == false)
dwResult = LastNtStatus();
return dwResult;
}
/// <summary>
/// Create environment for future remote procedure calls
///
/// _userData layout (x86/x64):
/// --------------------------------------------------------------------------------------------------------------------------
/// | Internal return value | Return value | Last Status code | Event handle | Space for copied arguments and strings |
/// -------------------------------------------------------------------------------------------------------------------------
/// | 8/8 bytes | 8/8 bytes | 8/8 bytes | 16/16 bytes | |
/// --------------------------------------------------------------------------------------------------------------------------
/// </summary>
/// <param name="noThread">Create only codecave and sync event, without thread</param>
/// <returns>Status</returns>
NTSTATUS RemoteExec::CreateRPCEnvironment( bool noThread /*= false*/ )
{
NTSTATUS dwResult = STATUS_SUCCESS;
DWORD thdID = 0;
bool status = true;
//
// Allocate environment codecave
//
if (!_workerCode.valid())
_workerCode = _memory.Allocate( 0x1000 );
if (!_userData.valid())
_userData = _memory.Allocate( 0x4000, PAGE_READWRITE );
if (!_userCode.valid())
_userCode = _memory.Allocate( 0x1000 );
// Create RPC thread and sync event
if (noThread == false)
{
thdID = CreateWorkerThread();
if (thdID)
status = CreateAPCEvent( thdID );
}
if (thdID == 0 || status == false)
dwResult = LastNtStatus();
return dwResult;
}
/// <summary>
/// Create environment for future remote procedure calls
///
/// _userData layout (x86/x64):
/// --------------------------------------------------------------------------------------------------------------------------
/// | Internal return value | Return value | Last Status code | Event handle | Space for copied arguments and strings |
/// -------------------------------------------------------------------------------------------------------------------------
/// | 8/8 bytes | 8/8 bytes | 8/8 bytes | 16/16 bytes | |
/// --------------------------------------------------------------------------------------------------------------------------
/// </summary>
/// <param name="bThread">Create worker thread</param>
/// <param name="bEvent">Create sync event for worker thread</param>
/// <returns>Status</returns>
NTSTATUS RemoteExec::CreateRPCEnvironment( bool bThread /*= true*/, bool bEvent /*= true*/ )
{
DWORD thdID = GetTickCount(); // randomize thread id
NTSTATUS status = STATUS_SUCCESS;
//
// Allocate environment codecave
//
if (!_workerCode.valid())
_workerCode = _memory.Allocate( 0x1000 );
if (!_userData.valid())
_userData = _memory.Allocate( 0x4000, PAGE_READWRITE );
if (!_userCode.valid())
_userCode = _memory.Allocate( 0x1000 );
// Create RPC thread
if (bThread)
thdID = CreateWorkerThread();
// Create RPC sync event
if (bEvent)
{
if (_proc.core().native()->GetWow64Barrier().type != wow_32_64)
{
status = CreateAPCEvent( thdID );
}
else
{
status = LastNtStatus( STATUS_NOT_SUPPORTED );
}
}
if (bThread && thdID == 0)
status = LastNtStatus();
return status;
}
