Proving Grounds Writeups

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Hard Windows

Osaka Writeup - Proving Grounds

Hard Windows box exploited through a custom FTP server's format-string info leak and a DEP-bypassing ROP chain for a buffer overflow shell, then escalated by abusing SeDebugPrivilege to impersonate winlogon and create a local administrator.

buffer-overflow binary-exploitation ftp privilege-escalation +1

The Husky Hacker • Oct 8, 2026 • 4 min read

Other platforms

HackTheBox 92 TryHackMe 10 All writeups