2026-01-03 7 min
[writeup]
Hack The Box Secnotes Writeup
Medium Windows box. CSRF and blind XSS in a note-sharing app steal admin credentials, SMB write plants an ASPX webshell, and WSL history leaks the admin.
retired boxes, exploit notes, tooling we wrote because nothing else did the job.
Medium Windows box. CSRF and blind XSS in a note-sharing app steal admin credentials, SMB write plants an ASPX webshell, and WSL history leaks the admin.
Easy Linux box. Jinja2 SSTI on a virtual host gives RCE, audit logs leak credentials for a user in adm, and SplunkWhisperer2 escalates to root.
Medium Linux box. A leaked SuperSecureServer.py runs the request path through exec(), a known plaintext attack recovers robert's key, and sudo gives root.
Medium Linux box. A jackson-databind validator falls to CVE-2019-12384 via an H2 RUNSCRIPT, and a root systemd timer runs a writable backup script.