Popping an alert from a sandboxed WebAssembly module

Corresponding Phrack article: https://phrack.org/issues/72/10_md#article

Run

The .wasm is included, so running this PoC requires just a local web server:

python -m http.server 8080

Then navigate to http://localhost:8080/payload.htm

Compile

To build the .wasm yourself, use a recent version of binaryen, and run:

wasm-as -all payload.wat