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OffSec Proving Grounds Osaka — FTP Buffer Overflow & psgetsys

James
AOV Security

In this Art of Vector walkthrough, we take OffSec Proving Grounds Osaka from a sparse Windows port map to full administrator desktop access by chaining a custom FTP stack buffer overflow (WinDbg + Mona, ASLR leak, ROP, and VirtualProtect), then escalating with SeDebugPrivilege and psgetsys parent-process token theft to create a local admin account for RDP.