The whois quick reference: flags, a modular copy-paste cheat sheet, and a worked breakdown of every real situation. Look up a domain, find who owns an IP, enumerate a netblock, pull name servers, read registration dates, query a registry directly, and route around a redacted or wrong-server answer with RDAP.
The exiftool quick reference: flags, a modular copy-paste cheat sheet, and a worked breakdown of every real situation. Dump every tag, pull GPS as decimal, surface hidden CTF fields, extract the embedded thumbnail, strip metadata before publishing, shift wrong timestamps, and batch a folder to CSV.
The Amass quick reference: flags, a modular copy-paste cheat sheet, and a worked breakdown of every real recon situation. Enumerate subdomains passively then actively, load API keys for real coverage, brute force names, pull JSON with jq, find related domains by WHOIS/ASN/CIDR, diff the stored database, and validate before you scan.
The theHarvester quick reference: flags, a modular copy-paste cheat sheet, and a worked breakdown of every real situation. Pull subdomains from certificate transparency, scrape hosts and emails from search engines, resolve and validate leads with DNS, page a noisy source, wire in API keys, save JSON for jq, and run it in Docker.