TemplateCraft — Preview

Scenario

The preview engine exposes Python object internals through the template context. Deeper expressions can reach dangerous attributes on built-in types. Trigger the lab's simulated sandbox escape indicator.

Your approach

1. Start from a working math expression payload.
2. Traverse object class or MRO attributes allowed by Jinja.
3. Build a chain that reaches a simulated command or flag helper.
4. Read the escape flag from the rendered output.
5. Submit the simulated escape flag.