# trailofbits/ctf

CTF Field Guide

Repository: https://github.com/trailofbits/ctf
Canonical: https://ross.abutalabs.com/products/trailofbits-ctf
Homepage: https://trailofbits.github.io/ctf/
Language: C
License: CC-BY-SA-4.0
License Family: other
Topics: security-ctf, tutorials, ctf
Last push: 2024-11-15T16:52:18+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 4489, "days_push": 656, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1438, forks 239 (observed 2026-08-28T04:04:43.940769+00:00)

## What it is
The CTF Field Guide is a free online book by Trail of Bits that teaches how to win Capture The Flag security competitions. It covers vulnerability discovery, exploit creation, toolkit building, and operational tradecraft with walkthroughs and curated references.

## Use cases
- learn how to compete in CTF challenges
- study vulnerability discovery and exploit development
- build a personal security toolkit for CTFs
- find reference materials for reverse engineering and pwn challenges
- prepare for a career in offensive security

## When to choose
- you are new to CTF competitions and want structured guidance
- you want curated expert references on exploitation and tradecraft
- you are transitioning into computer security and want offensive fundamentals

## When to avoid
- you need a runnable tool rather than educational material
- you want defensive security or blue-team training
- you need up-to-date coverage of the latest CTF metas without supplementing with newer resources

## Facets
- artifact type: learning-resource
- maturity: maintenance
- function: security, penetration-testing, developer-tools
- domain: security, tutorials, education, penetration-testing
- platform: cross-platform
- tags: ctf, capture-the-flag, exploitation, vulnerability-research, guide, book

## Member repositories
- trailofbits/ctf (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:43.940769+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:36:42.227781+00:00, confidence not recorded.
  - readme: https://github.com/trailofbits/ctf (fetched 2026-08-28T04:04:43.940769+00:00, sha 8eadb39984b4)
  - homepage: https://trailofbits.github.io/ctf/ (fetched 2026-08-29T11:47:20.342954+00:00, sha c1c6617e9ae1)
- Data as of 2026-08-30T08:39:29.467469+00:00.