# dailyyarn > Open-source publisher. Listings imported from github.com/dailyyarn — credited to the original author with their license. - **Listings:** 9 - **Total installs:** 0 - **Profile:** https://agentstack.voostack.com/s/dailyyarn - **Website:** https://github.com/dailyyarn ## Published listings - [Ctf Osint](https://agentstack.voostack.com/l/skill-dailyyarn-ctf-agent-ctf-osint) — Skill · Free · security-reviewed — `agentstack add skill-dailyyarn-ctf-agent-ctf-osint` Provides open source intelligence techniques for CTF challenges. Use when gathering information from public sources, social media, geolocation, DNS records, username enumeration, reverse image search, Google dorking, Wayback Machine, Tor relays, FEC filings, or identifying unknown data like hashes and coordinates. - [Ctf Forensics](https://agentstack.voostack.com/l/skill-dailyyarn-ctf-agent-ctf-forensics) — Skill · Free · security-reviewed — `agentstack add skill-dailyyarn-ctf-agent-ctf-forensics` Provides digital forensics and signal analysis techniques for CTF challenges. Use when analyzing disk images, memory dumps, event logs, network captures, cryptocurrency transactions, steganography, PDF analysis, Windows registry, Volatility, PCAP, Docker images, coredumps, side-channel power traces, DTMF audio spectrograms, packet timing analysis, or recovering deleted files and credentials. - [Ctf Reverse](https://agentstack.voostack.com/l/skill-dailyyarn-ctf-agent-ctf-reverse) — Skill · Free · security-reviewed — `agentstack add skill-dailyyarn-ctf-agent-ctf-reverse` Provides reverse engineering techniques for CTF challenges. Use when analyzing binaries, game clients, obfuscated code, esoteric languages, custom VMs, anti-debugging, anti-analysis bypass, WASM, .NET, APK (including Flutter/Dart AOT with Blutter), HarmonyOS HAP/ABC, Python bytecode, Go/Rust/Swift/Kotlin binaries, VMProtect/Themida, Ghidra, GDB, radare2, Frida, angr, Qiling, Triton, binary diffin… - [Ctf Web](https://agentstack.voostack.com/l/skill-dailyyarn-ctf-agent-ctf-web) — Skill · Free — `agentstack add skill-dailyyarn-ctf-agent-ctf-web` Provides web exploitation techniques for CTF challenges. Use when solving web security challenges involving XSS, SQLi, SSTI, SSRF, CSRF, XXE, file upload bypasses, JWT attacks, prototype pollution, path traversal, command injection, LaTeX injection, request smuggling, DOM clobbering, Web3/blockchain, authentication bypass, SAML exploitation, OAuth/OIDC, open redirect chains, subdomain takeover, o… - [Ctf Malware](https://agentstack.voostack.com/l/skill-dailyyarn-ctf-agent-ctf-malware) — Skill · Free · security-reviewed — `agentstack add skill-dailyyarn-ctf-agent-ctf-malware` Provides malware analysis and network traffic techniques for CTF challenges. Use when analyzing obfuscated scripts, malicious packages, custom crypto protocols, C2 traffic, PE/.NET binaries, RC4/AES encrypted communications, YARA rules, shellcode analysis, memory forensics for malware (Volatility malfind, process injection detection), anti-analysis techniques (VM/sandbox detection, timing evasion… - [Ctf Pwn](https://agentstack.voostack.com/l/skill-dailyyarn-ctf-agent-ctf-pwn) — Skill · Free · security-reviewed — `agentstack add skill-dailyyarn-ctf-agent-ctf-pwn` Provides binary exploitation (pwn) techniques for CTF challenges. Use when exploiting buffer overflows, format strings, heap vulnerabilities (House of Orange, Spirit, Lore, Apple 2, Einherjar, tcache stashing unlink), race conditions, kernel bugs, ROP chains, ret2libc, ret2dlresolve, shellcode, GOT overwrite, use-after-free, seccomp bypass, FSOP, stack pivot, sandbox escape, Windows SEH overwrite… - [Ctf Crypto](https://agentstack.voostack.com/l/skill-dailyyarn-ctf-agent-ctf-crypto) — Skill · Free · security-reviewed — `agentstack add skill-dailyyarn-ctf-agent-ctf-crypto` Provides cryptography attack techniques for CTF challenges. Use when attacking encryption, hashing, signatures, ZKP, PRNG, or mathematical crypto problems involving RSA, AES, ECC, lattices, LWE, CVP, number theory, Coppersmith, Pollard, Wiener, padding oracle, GCM, key derivation, or stream/block cipher weaknesses. - [Ctf Misc](https://agentstack.voostack.com/l/skill-dailyyarn-ctf-agent-ctf-misc) — Skill · Free · security-reviewed — `agentstack add skill-dailyyarn-ctf-agent-ctf-misc` Provides miscellaneous CTF challenge techniques. Use for encoding puzzles, RF/SDR signal processing, Python/bash jails, DNS exploitation, unicode steganography, floating-point tricks, QR codes, audio challenges, Z3 constraint solving, Kubernetes RBAC, WASM game patching, esoteric languages, game theory, commitment schemes, combinatorial games, or challenges that don't fit other categories. - [Solve Challenge](https://agentstack.voostack.com/l/skill-dailyyarn-ctf-agent-solve-challenge) — Skill · Free · security-reviewed — `agentstack add skill-dailyyarn-ctf-agent-solve-challenge` Solves CTF challenges by analyzing files, connecting to services, and applying exploitation techniques. Orchestrates category-specific CTF skills for pwn, crypto, web, reverse engineering, forensics, OSINT, malware analysis, and miscellaneous challenges. Use when given a CTF challenge to solve, a challenge file to analyze, or a service endpoint to exploit. --- Seller on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Install any with `agentstack add `.