HTB Cyber Apocalypse CTF 2025: Tales from Eldoria

HTB Cyber Apocalypse CTF 2025: Tales from Eldoria > Crossbow

Vulnerability: out-of-bound write -> stack pivot.

static-binary rop mprotect stack-pivoting out-of-bound shellcode stack-buffer-overflow

February 8, 2026 • October 29, 2025 • Easy

HTB Cyber Apocalypse CTF 2025: Tales from Eldoria > Laconic

Vulnerability: stack buffer overflow - improper length check in read().

stack-buffer-overflow sigrop return-address-overwrite static-binary

February 8, 2026 • October 28, 2025 • Easy

HTB Cyber Apocalypse CTF 2025: Tales from Eldoria > Contractor

Vulnerability: stack buffer overflow - improper length check in read().

brute-force bypass-stack-canary stack-buffer-overflow

January 13, 2026 • October 30, 2025 • Medium

HTB Cyber Apocalypse CTF 2025: Tales from Eldoria > Strategist

Vulnerability: Chương trình tin rằng dữ liệu được ghi vào sẽ không vượt quá kích thước chunk được cấp phát, nhưng trên thực tế kích thước overflow dẫn đến ghi đè vào size của chunk sau do sử dụng strlen().

heap-exploitation heap-buffer-overflow tcache-poisoning hook-overwrite

January 13, 2026 • October 30, 2025 • Medium

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