Undocumented ActionScript Flash Hack

To see if there is anything interesting within the classes, we can look at each property of the classes in turn. If we hit upon theprototypeproperty — where methods and properties are stored for the class (whether using ActionScript 1.0 or 2.0) — looking at its properties and methods should reveal whatever interesting tidbits lurk there:

// Set protection flags to 110 for _global to unhide everything
ASSetPropFlags(_global, null, 6, 1);
// List all objects in _global
for (thisObject in _global) {
 ASSetPropFlags(_global[thisObject], null, 6, 1);
 trace("\n" + thisObject);
 for (props in _global[thisObject]) {
  trace(" " + props);
  // List subitems found under prototype.
  if (props == "prototype") {
   ASSetPropFlags(_global[thisObject].prototype, null, 6, 1);
   for (protoChain in _global[thisObject].prototype) {
    trace(" " + protoChain);
   }
  }
 }
}

If you attach the preceding code to frame 1 and test the movie in Flash MX 2004, you’ll see a lengthy display (which would stretch 10 pages in this book). The listing includes documented classes and their methods and properties, such as for the String class:

String
fromCharCode
_ _proto_ _ 
constructor
prototype
substr
split
substring
slice
lastIndexOf
indexOf
concat
charCodeAt
charAt
toLowerCase
toUpperCase
toString
valueOf
_ _proto_ _ 
constructor

Note that this lists class methods and class properties followed by instance methods and instance properties indented under theprototype property.

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