https://america.github.io/en/tags/reverse-engineering/Recent content in Reverse Engineering on オブライエンの日誌Hugoen-USWed, 30 Sep 2026 00:00:00 +0900https://america.github.io/en/post/2026-09-30-sudoers-nopasswd-ssh-forced-command-mystery/Wed, 30 Sep 2026 00:00:00 +0900https://america.github.io/en/post/2026-09-30-sudoers-nopasswd-ssh-forced-command-mystery/sudo systemctl restart bluetooth ran without asking for a password. That one moment led through GTFOBins, SSH forced commands, rrsync, and eventually the OpenSSH source code — while my PC powered itself off twice for reasons I still can't fully explain.https://america.github.io/en/post/2026-09-13-recovering-psn-chat-history-waydroid/Sun, 13 Sep 2026 00:00:00 +0900https://america.github.io/en/post/2026-09-13-recovering-psn-chat-history-waydroid/Rather than scrolling and screenshotting years of chat history in the PS App running under Waydroid by hand, I wanted to pull it out automatically. The local cache turned out to be encrypted, which led to hunting through an undocumented API to recover the full history instead.