Windows API Functions = win32 API

https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-messagebox

The push is reverse of the function:

[--- MessageBox ---]
push 0                              [ Button Type ]
push "Sorry!"       		    [ Caption ]
push "Wrong serial key. Try again!" [ Text ]
push 0                 		    [ Parent Window ]
call MessageBox


The stack is reverse of the push,
the stack grows from bottom up.

[--- Stack ---]
0
Wrong serial key. Try again!
Sorry
0