<Tag: hackthebox />

Cadence in the Cord is a Sigrok/UART challenge where the apparent serial message only serves as a guide to a second, covert channel encoded in the inter-frame timing—short gaps as 0, long gaps as 1.

The Emptiness Machine is a modern FSOP-based pwn challenge from Hack The Box’s Cyber Apocalypse 2026 that demonstrates how glibc file stream structures in a fully mitigated Linux x86_64 environment can still be abused for powerful exploitation. By combining a controlled leak from stdout to defeat ASLR with a carefully aligned House of Apple 2 attack on stderr, the solver script reliably turns program teardown (_IO_flush_all()) into a remote shell and captures the flag.