Binary Analysis Challenge - Obfuscated Stack VM
Binary Analysis Challenge - Obfuscated Stack VM: a task in openthoughts-tblite-dev-apptainer-v1: OpenThoughts-TBLite dev (offline Apptainer, v1) (Harbor dataset). A protected ELF binary at /app/validator implements a sophisticated stack-based virtual machine with encrypted bytecode and multi-stage…
The task
A protected ELF binary at `/app/validator` implements a sophisticated stack-based virtual machine with encrypted bytecode and multi-stage validation. Your task is to reverse engineer the binary to determine the exact input that causes it to output `ACCESS GRANTED` and write only that input string to `/app/flag.txt`.