traffic-analysis-pcap

traffic-analysis-pcap is a skill for Claude Code, Codex from DorianGallo/hack-skills-local. It costs 64 tokens per session (3,082 once invoked), scanned D, a copy of traffic-analysis-pcap, MIT.

A guide to analyzing PCAP files, saved records of network traffic, with tools such as Wireshark and tshark.

In plain words
What is it for?
Use it to repair or merge captures, filter traffic, inspect HTTP, DNS, email, USB, and Wi-Fi protocols, extract files, and analyze encrypted traffic when keys are available.
Why use it?
It helps reconstruct what happened on a network, including exchanged files, protocols, credentials, and possible covert channels.

Skill for Claude CodeCodex

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

Good fit Use it to repair or merge captures, filter traffic, inspect HTTP, DNS, email, USB, and Wi-Fi protocols, extract files, and analyze encrypted traffic when keys are available.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/doriangallo/hack-skills-local/traffic-analysis-pcap
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 DorianGallo/hack-skills-local --skill traffic-analysis-pcap
Clone the repo
git clone --depth 1 https://github.com/DorianGallo/hack-skills-local

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 traffic-analysis-pcap

README.md
[![agentmods](https://agentmods.dev/badge/skills/doriangallo/hack-skills-local/traffic-analysis-pcap/github.svg)](https://agentmods.dev/skills/doriangallo/hack-skills-local/traffic-analysis-pcap)
Your own site
<a href="https://agentmods.dev/skills/doriangallo/hack-skills-local/traffic-analysis-pcap"><img src="https://agentmods.dev/badge/skills/doriangallo/hack-skills-local/traffic-analysis-pcap/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 traffic-analysis-pcap

Your own site · 80×15
<a href="https://agentmods.dev/skills/doriangallo/hack-skills-local/traffic-analysis-pcap"><img src="https://agentmods.dev/badge/skills/doriangallo/hack-skills-local/traffic-analysis-pcap.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 64 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,082 The whole file, excluding the scripts and references it only reads on demand.
Security scan D 2 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 $0.00064 $0.03082
Opus 5 $0.00032 $0.01541
Sonnet 5 $0.00013 $0.00616
Haiku 4.5 $0.00006 $0.00308

Measured 6d ago against content hash 2bc48c779df9, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade D, and why

traffic-analysis-pcap scanned grade D with 2 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 6d 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.

Harvests environment variableshighData exfiltration

Enumerating or grepping the environment for keys collects credentials unrelated to what the mod says it does.

│ ├── Extract credentials (plaintext) (§3)

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

# Automated PCAP analysis: sudo apt install networkminer
Origin

This is a copy

100% identical to traffic-analysis-pcap — 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.

skills/traffic-analysis-pcap/SKILL.md · 342 lines

How it starts

The opening of the file, as written. The whole thing — 342 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SKILL: Traffic Analysis & PCAP — Expert Analysis Playbook

AI LOAD INSTRUCTION: Expert traffic analysis and PCAP forensics techniques. Covers PCAP repair, Wireshark essential filters, protocol-specific analysis (HTTP, HTTPS/TLS, DNS, FTP, SMTP, USB HID, WiFi, ICMP), data extraction (file carving, credential harvesting, covert channels), NetworkMiner, and tshark CLI analysis. Base models miss USB keyboard decode patterns, DNS tunneling detection heuristics, and TLS decryption workflows.

Before going deep, consider loading:


1. PCAP REPAIR

pcapfix corrupted.pcap -o fixed.pcap           # repair corrupted PCAP
# Magic bytes: d4c3b2a1=pcap(LE), a1b2c3d4=pcap(BE), 0a0d0d0a=pcapng
editcap -F pcap capture.pcapng capture.pcap    # convert pcapng→pcap
mergecap -w merged.pcap file1.pcap file2.pcap  # merge captures

2. WIRESHARK ESSENTIAL FILTERS

IP / Host Filters

ip.addr == 10.0.0.1                  # source or destination
ip.src == 10.0.0.1                   # source only
ip.dst == 10.0.0.1                   # destination only
ip.addr == 10.0.0.0/24              # subnet
!(ip.addr == 10.0.0.1)              # exclude host

Protocol Filters

http                                  # all HTTP
dns                                   # all DNS
tcp                                   # all TCP
ftp                                   # all FTP
smtp                                  # all SMTP
tls                                   # all TLS/SSL
icmp                                  # all ICMP
arp                                   # all ARP

Read the full file on GitHub · 342 lines

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. 6d ago First seen · 342 lines · 64 tokens per session scan D 2bc48c779df9

Subscribe to this mod's changes

traffic-analysis-pcap is a skill published in the GitHub repository DorianGallo/hack-skills-local (5 stars, last pushed 3mo ago), licensed MIT. It adds 64 tokens to every session and 3,082 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it D with 2 findings (harvests environment variables, asks for root). It is 100% identical to traffic-analysis-pcap, differing in 0 lines, and is treated as a copy.

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