A skill for NetExec, a network security tool used to assess services across large networks. NetExec can work with services such as SMB, LDAP, SSH, RDP, and databases.

Checking and assessing authorized network services, working with groups of hosts, choosing service-specific options, and using supported authentication methods.

It puts the tool's commands, target formats, login methods, and service options in one reference for network assessments.

netexec — Skill for Claude Code and Codex by jessefmoore

Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo

git clone --depth 1 https://github.com/jessefmoore/offensive-claude-code

agentmods

npx agentmods add skills/jessefmoore/offensive-claude-code/netexec

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/jessefmoore/offensive-claude-code/netexec/github.svg)](https://agentmods.dev/skills/jessefmoore/offensive-claude-code/netexec)

Your own site

<a href="https://agentmods.dev/skills/jessefmoore/offensive-claude-code/netexec"><img src="https://agentmods.dev/badge/skills/jessefmoore/offensive-claude-code/netexec/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/jessefmoore/offensive-claude-code/netexec"><img src="https://agentmods.dev/badge/skills/jessefmoore/offensive-claude-code/netexec.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 9,524 The whole file, excluding the scripts and references it only reads on demand.

Security scan C 1 finding. 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.

Model	Per session	Once invoked
Fable 5.1	$0.00000	$0.09524
Opus 5.5	$0.00000	$0.03810
Sonnet 5.5	$0.00000	$0.01905
Haiku 4.5	$0.00000	$0.00952

Measured 1mo ago against content hash c80fded110b0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

netexec scanned grade C with 1 finding 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 1mo 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.

# 7. Dump credentials (if admin)

skills/netexec/SKILL.md · 988 lines

How it starts

The opening of the file, as written. The whole thing — 988 lines — stays where its author put it; the contents beside it link to each section on GitHub.

NetExec (nxc) Skill

Overview

NetExec (nxc) is a network service exploitation tool for assessing large networks. It supports SMB, LDAP, WinRM, MSSQL, SSH, FTP, RDP, WMI, NFS, and VNC protocols.

Source: https://www.netexec.wiki/ | GitHub: https://github.com/Pennyw0rth/NetExec

Global Syntax & Options

nxc [-h] [-t THREADS] [--timeout TIMEOUT] [--jitter INTERVAL] [--no-progress] [--verbose] [--debug] [--version]
    {smb,ssh,ldap,ftp,wmi,winrm,rdp,vnc,mssql,nfs} ...

# View protocol options
nxc <protocol> --help

# View available modules for a protocol
nxc <protocol> -L

Target Formats

nxc <protocol> hostname.domain.local
nxc <protocol> 192.168.1.0/24
nxc <protocol> 192.168.1.0 192.168.0.2
nxc <protocol> 192.168.1.0-28 10.0.0.1-67
nxc <protocol> ~/targets.txt

Authentication

Credentials

# Password
nxc <protocol> <target> -u username -p password

# NT hash (pass-the-hash)
nxc <protocol> <target> -u username -H 'NTHASH'
nxc <protocol> <target> -u username -H 'LM:NT'

# Special chars / dashes in creds
nxc <protocol> <target> -u username -p 'October2022!'
nxc <protocol> <target> -u='-username' -p='-October2022'

# From database by credential ID
nxc <protocol> <target> -id <cred_id>

# Multi-domain (FILE format: DOMAIN\user per line)
nxc <protocol> <target> -u FILE -p password

Brute Force & Password Spraying

# Multiple users/passwords inline
nxc <protocol> <target> -u user1 user2 -p Summer18
nxc <protocol> <target> -u user1 -p pass1 pass2 pass3

# From files
nxc <protocol> <target> -u users.txt -p passwords.txt
nxc <protocol> <target> -u users.txt -H hashes.txt

# No bruteforce (1 user = 1 password, paired)
nxc <protocol> <target> -u users.txt -p passwords.txt --no-bruteforce
nxc <protocol> <target> -u users.txt -H hashes.txt --no-bruteforce

# Continue after success
nxc <protocol> <target> -u users.txt -p 'Summer18' --continue-on-success

# Jitter between requests (seconds or range)
nxc <protocol> <target> --jitter 3 -u users.txt -p passwords.txt
nxc <protocol> <target> --jitter 2-5 -u users.txt -p passwords.txt

Read the full file on GitHub · 988 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.

1mo ago First seen · 988 lines · 0 tokens per session scan C c80fded110b0

Subscribe to this mod's changes

netexec is a skill published in the GitHub repository jessefmoore/offensive-claude-code (2 stars, last pushed 1mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 9,524 tokens. A static security scan graded it C with 1 finding (harvests environment variables). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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netexec