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.
npx skills add JustineDevs/premortem --skill traffic-analysis-pcapgit clone --depth 1 https://github.com/JustineDevs/premortemWrote 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.
[](https://agentmods.dev/skills/justinedevs/premortem/traffic-analysis-pcap)<a href="https://agentmods.dev/skills/justinedevs/premortem/traffic-analysis-pcap"><img src="https://agentmods.dev/badge/skills/justinedevs/premortem/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.
<a href="https://agentmods.dev/skills/justinedevs/premortem/traffic-analysis-pcap"><img src="https://agentmods.dev/badge/skills/justinedevs/premortem/traffic-analysis-pcap.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once 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 |
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 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.
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.
0. RELATED ROUTING
Before going deep, consider loading:
- memory-forensics-volatility for correlating memory artifacts with network traffic
- steganography-techniques for analyzing files extracted from traffic captures
- network-protocol-attacks for understanding attack patterns visible in captures
- reverse-shell-techniques for identifying shell traffic in captures
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
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.
- 6d ago First seen · 342 lines · 64 tokens per session scan D 2bc48c779df9
traffic-analysis-pcap is a skill published in the GitHub repository JustineDevs/premortem (2 stars, last pushed 1mo ago), licensed Apache-2.0. 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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