https://th3b0ywh0l1v3d.github.io/tags/c/ Recent content in C on Th3B0yWh0L1v3d — Security Writeups Hugo en-us Sat, 06 Jun 2026 00:00:00 +0000 https://th3b0ywh0l1v3d.github.io/ctf/dalctf-2026/crypto/playing-with-pointers/ Sat, 06 Jun 2026 00:00:00 +0000 https://th3b0ywh0l1v3d.github.io/ctf/dalctf-2026/crypto/playing-with-pointers/ A C program squares each flag byte as a float, then a &lsquo;forgotten&rsquo; Quake-style <em>(long</em>)&amp;y type-pun prints the raw IEEE-754 bits as integers; reversing bits→float→sqrt→char recovers the flag. https://th3b0ywh0l1v3d.github.io/ctf/gpn-ctf-2026/pwning/recipe-for-disaster/ Fri, 05 Jun 2026 00:00:00 +0000 https://th3b0ywh0l1v3d.github.io/ctf/gpn-ctf-2026/pwning/recipe-for-disaster/ A food-ordering binary reads chef notes with gets() into a buffer sitting in front of an int price field, letting an overflow set a negative price that makes the order total negative and prints /flag.