build-a-builtin-revenge

b01lersc

Task: a Python 3.14 pyjail forbids literal dots, 'import' and 'match' substrings, wipes builtins, and provides only set_builtin helper. Solution: use escape sequences to bypass filters, trigger __import__ via async coroutine creation, inject exec callback to evaluate dotted code constructed with \\x2e escapes, then traverse object graph to FileLoader globals for os module access.