Messagebox - API hook

gistfile1.txt

Test Breakpoint 
bpx MessageBoxW


'use strict';


var msgbox=Module.getExportByName('user32.dll','MessageBoxW');

Interceptor.attach(msgbox , {

    onEnter: function(args) {

    console.log("Handle",args[0]);
    console.log("Text",args[1].readUtf16String());
    console.log("Caption",args[2].readUtf16String());
    console.log("Type",args[3]);
    args[1].writeUtf16String("AAAA");
   },

    onLeave: function(retval) {


    console.log("leaving");

    }



});