picoCTF 2025

picoCTF 2025 > Handoff

Vulnerability: stack buffer overflow.

return-address-overwrite shellcode rop
February 8, 2026 • September 9, 2025 • Hard

picoCTF 2025 > Echo Valley

format-string-bug return-address-overwrite
January 13, 2026 • September 9, 2025 • Medium
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