Signed Integer Bug on CyberSecurity Elitehttps://cybersecurityelite.com/tags/signed-integer-bug/Recent content in Signed Integer Bug on CyberSecurity EliteCyberSecurity Elitehttps://cybersecurityelite.com/images/og-default.pnghttps://cybersecurityelite.com/images/og-default.pngHugoen-usSat, 11 Jul 2026 03:58:28 +0200LYKNCTF 2026 Pwn Writeup: 3 Binary Exploitation Challenges (ret2win, Signed Length Bypass, Off-by-One UAF Heap)https://cybersecurityelite.com/ctf-writeups/lyknctf-2026-pwn-writeup/Sat, 11 Jul 2026 01:30:00 +0000https://cybersecurityelite.com/ctf-writeups/lyknctf-2026-pwn-writeup/Step-by-step LYKNCTF 2026 pwn (binary exploitation) writeup — three challenges covering a textbook non-PIE ret2win, a signed-int length check that becomes 0xff after byte truncation, and an off-by-one UAF in a note manager chained into heap-safe-linking leak, unsorted-bin libc leak, tcache poisoning, PIE recovery, notes-table hijack for arbitrary read/write, stack ROP, and system('/bin/sh').