CSCV 2025 Preliminary

CTF > CSCV > CSCV 2025 Preliminary

pwn - Hanoi Convention

Can you answer all these questions?

Vulnerability: stack buffer overflow - improper length check in read(), strcpy(); format string bug

stack-buffer-overflow return-address-overwrite return-oriented-programming format-string-bug bypass-stack-canary
December 22, 2025 • October 25, 2025 • Hard
CTF > CSCV > CSCV 2025 Preliminary

pwn - sudokuS

Play the sudoku and get flag. Flag path at /flag.

Vulnerability: rwx permission

return-address-overwrite return-oriented-programming out-of-bound shellcode bypass-seccomp
December 22, 2025 • October 25, 2025 • Medium
CTF > CSCV > CSCV 2025 Preliminary

pwn - Heap NoteS

Vulnerability: heap buffer overflow - improper length check in gets()

heap-buffer-overflow got-overwrite
December 22, 2025 • October 24, 2025 • Medium
CTF > CSCV > CSCV 2025 Preliminary

pwn - RacehorseS

My daughter Haru Urara is learning C. She wrote a little program to talk to another horse. Can you check...

Vulnerability: format string bug

format-string-bug got-overwrite
December 22, 2025 • October 24, 2025 • Easy
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