Tag: linux

Articles

• Certificate Pin Bypass via Register Rewriting

  23 Aug, 2026

  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.

• Simulating Asymmetric Partitions with Raft Pre-Vote

  21 Jun, 2026

  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.

• Forensic Reconstruction of Black-Box Protocols

  14 Jun, 2026

  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.

• Intercepting Running Linux Processes with ptrace

  12 Apr, 2026

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