Runtime reflections

A guide to bypassing a hardcoded certificate pin check by rewriting a function's return value at runtime with ptrace, covering breakpoint injection, address resolution, and the Yama ptrace_scope restriction.

A legacy server is dropping connections with no error codes. I walk through the process of using tcpdump, strace, and gdb to reconstruct a custom binary protocol from scratch.

A deep-dive into simulating asymmetric network partitions inside a custom Linux namespace sandbox, analyzing etcd Raft state transitions, pre-vote mechanisms, and the disruptive follower failure mode.

A deep-dive into the failed attempts to force egress via physical NICs using IP aliasing and policy routing, and the subsequent pivot to loopback capture and raw string extraction.

A guide to intercepting running Linux processes via ptrace, injecting assembly payloads, and restoring execution state without a restart.

Create a hardened, isolated network environment for untrusted workloads using dedicated bridges and iptables, ensuring zero lateral movement risk.

Solves the issue where a Docker host cannot communicate with its own macvlan containers by implementing a shim interface and custom routing.

Resolving a Windows Sandbox startup failure caused by host-to-guest vPCI protocol version negotiation mismatches.