The Teensy Executable Revisited
Summary
The Teensy Executable Revisited revisits ultra-compact ELF binaries, exploring how a 45- to 91-byte program can be engineered by bending the ELF header rules and overlapping segments. It demonstrates iterative size reductions through clever use of ELF fields, address placement, and ABI quirks, while highlighting the potential fragility and security considerations of such techniques.