.586p
.Model Flat

extrn     ExitProcess     : PROC     ;procedure to shut down a process
extrn     MessageBoxA     : PROC     ;procedure to show a MessageBox

.Data                                        

shit    db "you traced via single step or run it normal",0
shit2   db "you traced me via access to debug registers!!!",0
caption db "",0


.Code
Main:   push    edx
        sidt    [esp-2]                         ; Interrupt table to stack
        pop     edx
        add     edx,4*8+4                       ; Get interrupt vector

        mov     ebx,[edx]
        mov     bx,word ptr [edx-4]     

        lea     edi,InterruptHandler1

        mov     [edx-4],di
        ror     edi,16                  
        mov     [edx+2],di

        mov     eax,dr3

        pushfd
        or      dword ptr [esp],800h
        popfd

        into

        mov     [edx-4],bx
        ror     ebx,16
        mov     [edx+2],bx

        push    0
        push    offset caption

        and     eax,000000F0h
        cmp     ax,00C0h
        je      f10

        push    offset shit
        jmp     msg
f10:    push    offset shit2
msg:    push    0
        call    MessageBoxA
exit_me:call    ExitProcess

InterruptHandler1:
        mov     eax,dr7
        iretd

End Main                        ;End of code, Main is the entrypoint