YPYogeshwar Peelainexploitnotes.hashnode.dev·Jul 12 · 7 min readBroncoCTF : Atomic Substitution Theory WriteupChallenge We're given secret.txt, a single line of comma-separated tuples wrapped in what looks like braces and underscores: (4, 17), (2, 16), (2, 15), (4, 9), { , (3, 2, 1), (5, 3), _ , (2, 17), ... 11A
NSNull Siryninctfs.hashnode.dev·Feb 8 · 3 min readSolving LACTF Lazy Bigrams: Phonetic Bigram Substitution ChallengeDetailed Walkthrough The challenge provides us with a Python script, chall.py, and a ciphertext file, ct.txt. Our goal is to reverse the encryption process to recover the flag. Analyzing the Encryption Script We begin by examining the logic in chall....00
