What problem does it solve? CTF challenges involving crypto, encoding, steganography, and mobile apps require methodical multi-stage analysis; this Skill provides a structured downstream workflow for decoding blobs, recovering transform chains, inspecting hidden media payloads, and hooking APK/IPA trust boundaries after sandbox assumptions are established. ## Core Features & Use Cases - Crypto and Encoding Recovery: Reconstructs transform chains step by step (container, compression, encoding, xor/substitution, crypto, integrity, parse) while preserving exact keys, IVs, nonces, and byte order. - Steganography Inspection: Examines metadata, chunk layout, palettes, alpha planes, LSBs, thumbnails, and appended trailers with evidence-driven decode attempts. - Mobile Trust-Boundary Analysis: Traces APK/IPA signer logic, token storage, SSL pinning, protobuf boundaries, and native bridge calls, hooking the narrowest boundary that proves behavior. - Use Case: Given an encoded blob from a CTF challenge, decode each stage in order, record decisive bytes per stage, and reproduce the final plaintext or signed request as verifiable evidence. ## Quick Start After $ctf-sandbox-orchestrator is active, use $competition-crypto-mobile to decode this blob, recover the transform chain, inspect stego payloads, or hook the mobile signing path.
