Known Plaintext Attack on CyberSecurity Elitehttps://cybersecurityelite.com/tags/known-plaintext-attack/Recent content in Known Plaintext Attack on CyberSecurity EliteCyberSecurity Elitehttps://cybersecurityelite.com/images/og-default.pnghttps://cybersecurityelite.com/images/og-default.pngHugoen-usSat, 11 Jul 2026 04:29:24 +0200LYKNCTF 2026 Forensics Writeup: 4 Challenges Solved (PNG Metadata XOR, Red-Channel LSB, JPEG-as-PNG ZIP Append, TRON USDT OFAC Trace)https://cybersecurityelite.com/ctf-writeups/lyknctf-2026-forensics-writeup/Sat, 11 Jul 2026 02:00:00 +0000https://cybersecurityelite.com/ctf-writeups/lyknctf-2026-forensics-writeup/Step-by-step LYKNCTF 2026 forensics writeup — four challenges covering PNG eXIf/tEXt metadata trap with repeating-key XOR, red-channel LSB PNG stego with decoy IEND trailer, JPEG masquerading as .png with an appended ZIP archive whose EOCD self-locates, and a TRC-20 USDT chain trace on TRON hitting an OFAC-sanctioned FUNNULL wallet before landing in a Bitget hot wallet.