pcap-triage

pcap-triage is a skill for Claude Code, Codex from liuxinye23/CyberStrikeAI. It costs 42 tokens per session (527 once invoked), scanned A, original, Apache-2.0.

A first-pass guide for examining PCAP files, which are recorded network conversations, and network logs from capture-the-flag challenges.

In plain words
What is it for?
Use it to inspect DNS, HTTP, TLS, email, file transfers, tunnels, clear-text credentials, beaconing, unusual domains, ports, and session volumes.
Why use it?
It quickly narrows a large traffic sample into a timeline, the main hosts and protocols, and the most suspicious conversations or transferred objects.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to inspect DNS, HTTP, TLS, email, file transfers, tunnels, clear-text credentials, beaconing, unusual domains, ports, and session volumes.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/liuxinye23/cyberstrikeai/pcap-triage
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 liuxinye23/CyberStrikeAI --skill pcap-triage
Clone the repo
git clone --depth 1 https://github.com/liuxinye23/CyberStrikeAI

Made for: Claude Code, 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 pcap-triage

README.md
[![agentmods](https://agentmods.dev/badge/skills/liuxinye23/cyberstrikeai/pcap-triage/github.svg)](https://agentmods.dev/skills/liuxinye23/cyberstrikeai/pcap-triage)
Your own site
<a href="https://agentmods.dev/skills/liuxinye23/cyberstrikeai/pcap-triage"><img src="https://agentmods.dev/badge/skills/liuxinye23/cyberstrikeai/pcap-triage/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 pcap-triage

Your own site · 80×15
<a href="https://agentmods.dev/skills/liuxinye23/cyberstrikeai/pcap-triage"><img src="https://agentmods.dev/badge/skills/liuxinye23/cyberstrikeai/pcap-triage.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 42 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 527 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 original No closer match found 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 $0.00042 $0.00527
Opus 5 $0.00021 $0.00264
Sonnet 5 $0.00008 $0.00105
Haiku 4.5 $0.00004 $0.00053

Measured 10d ago against content hash b1783d31e0ee, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

pcap-triage 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 10d 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.

skills/pcap-triage/SKILL.md · 69 lines

What it actually says

PCAP 流量题首轮分析

何时使用

当题目给出 .pcap.pcapng、导出的网络日志或“某台主机流量”样本时使用。

快速流程

  1. 先看整体时间线、会话数量、协议分布、异常端口和异常体量。
  2. 再定位题目重点:明文凭据、文件传输、隧道、恶意流量、DNS、HTTP、TLS、内网横移痕迹。
  3. 如果不能立刻判断题型,先做只读提取:字符串、对象、可见文件名、主机名、域名。

重点检查

通信画像

  • 谁和谁通信、何时开始、何时异常、哪类协议最突出。
  • 是否存在周期性 beacon、单向长连接、短时大量失败、异常域名。

明文与对象

  • HTTP、FTP、SMTP、POP、IMAP、Telnet 等是否直接泄露关键信息。
  • 是否有明显文件名、下载路径、上传对象、附件、图片、压缩包。

DNS 与名称信息

  • 可疑域名、拼写变体、随机子域、内外网混合查询。
  • DNS 往往能给出题目真正聚焦的主机与时间点。

输出要求

  • 时间线摘要
  • 关键主机/域名/端口
  • 最可疑的 3 个会话或对象
  • 下一步深挖方向
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. 10d ago First seen · 69 lines · 42 tokens per session scan A b1783d31e0ee

Subscribe to this mod's changes

pcap-triage is a skill published in the GitHub repository liuxinye23/CyberStrikeAI (0 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 42 tokens to every session and 527 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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