competition-kerberos-delegation

competition-kerberos-delegation is a skill for Codex from xAmirHamza77/ReverseOps-Skill. It costs 116 tokens per session (584 once invoked), scanned A, a copy of competition-kerberos-delegation, MIT.

A specialized workflow for investigating Kerberos delegation in a controlled cybersecurity challenge environment. Kerberos is a network authentication system; delegation lets one identity obtain or use tickets for another service.

In plain words
What is it for?
Use it to trace service names, constrained or unconstrained delegation, resource-based delegation, S4U requests, service tickets, and resulting privileges.
Why use it?
It distinguishes having a ticket from the target service actually accepting it and granting the claimed access.

Skill for Codex

Written for Codex: agents/openai.yaml present. Also seen: $skill-name invocation.

Good fit Use it to trace service names, constrained or unconstrained delegation, resource-based delegation, S4U requests, service tickets, and resulting privileges.

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Install with agentmods
npx agentmods add skills/xamirhamza77/reverseops-skill/competition-kerberos-delegation
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add xAmirHamza77/ReverseOps-Skill --skill competition-kerberos-delegation
Clone the repo
git clone --depth 1 https://github.com/xAmirHamza77/ReverseOps-Skill

Made for: Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for competition-kerberos-delegation

README.md
[![agentmods](https://agentmods.dev/badge/skills/xamirhamza77/reverseops-skill/competition-kerberos-delegation/github.svg)](https://agentmods.dev/skills/xamirhamza77/reverseops-skill/competition-kerberos-delegation)
Your own site
<a href="https://agentmods.dev/skills/xamirhamza77/reverseops-skill/competition-kerberos-delegation"><img src="https://agentmods.dev/badge/skills/xamirhamza77/reverseops-skill/competition-kerberos-delegation/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for competition-kerberos-delegation

Your own site · 80×15
<a href="https://agentmods.dev/skills/xamirhamza77/reverseops-skill/competition-kerberos-delegation"><img src="https://agentmods.dev/badge/skills/xamirhamza77/reverseops-skill/competition-kerberos-delegation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 116 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 584 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00116 $0.00584
Opus 5 $0.00058 $0.00292
Sonnet 5 $0.00023 $0.00117
Haiku 4.5 $0.00012 $0.00058

Measured 12d ago against content hash 245321129a7f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

competition-kerberos-delegation scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

100% identical to competition-kerberos-delegation — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

CTF-Sandbox/competition-kerberos-delegation/SKILL.md · 48 lines

How it starts

The opening of the file, as written. The whole thing — 48 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Competition Kerberos Delegation

Use this skill only as a downstream specialization after $ctf-sandbox-orchestrator is already active and has established sandbox assumptions, node ownership, and evidence priorities. If that has not happened yet, return to $ctf-sandbox-orchestrator first.

Use this skill when the hard part is not "is there Kerberos here," but which delegation edge exists, which ticket is being minted, and which service really accepts it.

Reply in Simplified Chinese unless the user explicitly requests English.

Quick Start

  1. Write the trust chain first: principal -> delegation edge -> ticket type -> target SPN -> accepting service -> resulting privilege.
  2. Separate ticket possession from accepted privilege.
  3. Keep SPNs, delegation mode, PAC/group data, encryption type, and service acceptance in one compact evidence block.
  4. Reproduce one minimal delegation chain before broadening into variants.
  5. Tie every privilege claim to a specific accepted ticket or service-side effect.

Workflow

1. Identify The Delegation Edge

  • Determine whether the path is constrained delegation, unconstrained delegation, resource-based constrained delegation, protocol transition, or another trust edge.
  • Inspect SPNs, ACLs, service accounts, SIDHistory, certificate templates, and replication rights only when they affect the active path.

2. Trace Ticket Minting And Acceptance

  • Record TGT/TGS type, S4U steps when relevant, delegation flags, PAC or group data, encryption type, cache location, and target SPN.
  • Prove which service actually accepts the ticket and what capability appears after acceptance.

3. Report The Effective Edge

  • Compress the chain into one replayable path, not a vague "domain compromise" statement.
  • Separate candidate edges from the edge that really lands privilege.

Read This Reference

  • Load references/kerberos-delegation.md for the delegation checklist, ticket fields to preserve, and common proof mistakes.

What To Preserve

Read the full file on GitHub · 48 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 48 lines · 116 tokens per session scan A 245321129a7f

Subscribe to this mod's changes

competition-kerberos-delegation is a skill published in the GitHub repository xAmirHamza77/ReverseOps-Skill (4 stars, last pushed 1mo ago), licensed MIT. It adds 116 tokens to every session and 584 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to competition-kerberos-delegation, differing in 0 lines, and is treated as a copy.

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