ModBuilt

Description: In general, this technique modifies built-in functions to make them behave differently than expected. This example changes the behavior of `console.log` and `JSON.parse` to modify some strings on the fly.

Experiment: Inspect the code, then open the DevTools and check the console logs to see what the output actually looks like. Try to log the forbidden word via `console.log("shellcode")`.

Impact:This technique can be quite effective, as it stealthily modifies analysis results without making itself easily noticeable (as compared to a breakpoint). While this example is rather simple, overwriting the built-in toString function can be used to hide arbitrary objects and functions from inspection.