func CreateContesterDesktop() (winsta win32.Hwinsta, desk win32.Hdesk, name string, err error) {
var origWinsta win32.Hwinsta
if origWinsta, err = win32.GetProcessWindowStation(); err != nil {
return
}
runtime.LockOSThread()
defer runtime.UnlockOSThread()
var origDesktop win32.Hdesk
if origDesktop, err = win32.GetThreadDesktop(win32.GetCurrentThreadId()); err != nil {
return
}
if winsta, err = win32.CreateWindowStation(
syscall.StringToUTF16Ptr(threadIdName("w")), 0, win32.MAXIMUM_ALLOWED, win32.MakeInheritSa()); err != nil {
return
}
if err = win32.SetProcessWindowStation(winsta); err != nil {
win32.CloseWindowStation(winsta)
return
}
var winstaName string
if winstaName, err = win32.GetUserObjectName(syscall.Handle(winsta)); err == nil {
shortName := threadIdName("c")
desk, err = win32.CreateDesktop(
syscall.StringToUTF16Ptr(shortName),
nil, 0, 0, syscall.GENERIC_ALL, win32.MakeInheritSa())
if err == nil {
name = winstaName + "\\" + shortName
}
}
win32.SetProcessWindowStation(origWinsta)
win32.SetThreadDesktop(origDesktop)
if err != nil {
return
}
everyone, err := syscall.StringToSid("S-1-1-0")
if err == nil {
if err = win32.AddAceToWindowStation(winsta, everyone); err != nil {
log.Error(err)
}
if err = win32.AddAceToDesktop(desk, everyone); err != nil {
log.Error(err)
}
} else {
err = os.NewSyscallError("StringToSid", err)
}
return
}
func InjectDll(d *SubprocessData, loadLibraryW uintptr, dll string) error {
if int(loadLibraryW) == 0 {
return nil
}
ec := tools.ErrorContext("InjectDll")
log.Debug("InjectDll: Injecting library %s with call to %d", dll, loadLibraryW)
name, err := syscall.UTF16FromString(dll)
if err != nil {
return ec.NewError(err, ERR_USER, "UTF16FromString")
}
nameLen := uint32((len(name) + 1) * 2)
remoteName, err := win32.VirtualAllocEx(d.platformData.hProcess, 0, nameLen, win32.MEM_COMMIT, win32.PAGE_READWRITE)
if err != nil {
return ec.NewError(err)
}
defer win32.VirtualFreeEx(d.platformData.hProcess, remoteName, 0, win32.MEM_RELEASE)
_, err = win32.WriteProcessMemory(d.platformData.hProcess, remoteName, unsafe.Pointer(&name[0]), nameLen)
if err != nil {
return ec.NewError(err)
}
thread, _, err := win32.CreateRemoteThread(d.platformData.hProcess, win32.MakeInheritSa(), 0, loadLibraryW, remoteName, 0)
if err != nil {
return ec.NewError(err)
}
defer syscall.CloseHandle(thread)
wr, err := syscall.WaitForSingleObject(thread, syscall.INFINITE)
if err != nil {
return ec.NewError(os.NewSyscallError("WaitForSingleObject", err))
}
if wr != syscall.WAIT_OBJECT_0 {
return ec.NewError(fmt.Errorf("Unexpected wait result %s", wr))
}
return nil
}