defasm @
    # 58 ?'                             ; pop eax
    # ff ?' # 30 ?'                     ; push dword [eax]
next

defasm !
    # 5b ?'                             ; pop ebx
    # 58 ?'                             ; pop eax
    # 89 ?' # 03 ?'                     ; mov [ebx], eax
next