Strix Code Vulnerability Scan
usestrix/strix
Runs a Strix white-box security review that reads the source, then exploits what it finds in a sandbox so each reported issue has a proof-of-concept.
Agent skill
Performing Hash Cracking With Hashcat
Cracks password hashes with Hashcat, covering hash-type identification, dictionary/brute-force/rule-based attack modes, custom rule creation, GPU benchmarking, and password-strength/compliance…
Install Performing Hash Cracking With Hashcat
$ npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill performing-hash-cracking-with-hashcat -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install mukul975/Anthropic-Cybersecurity-Skills performing-hash-cracking-with-hashcat --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/performing-hash-cracking-with-hashcat .claude/skills/performing-hash-cracking-with-hashcat && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "performing-hash-cracking-with-hashcat" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/performing-hash-cracking-with-hashcat into .claude/skills/performing-hash-cracking-with-hashcat/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performing-hash-cracking-with-hashcat", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/performing-hash-cracking-with-hashcatType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill performing-hash-cracking-with-hashcat -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install mukul975/Anthropic-Cybersecurity-Skills performing-hash-cracking-with-hashcat --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/performing-hash-cracking-with-hashcat .agents/skills/performing-hash-cracking-with-hashcat && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "performing-hash-cracking-with-hashcat" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/performing-hash-cracking-with-hashcat into .agents/skills/performing-hash-cracking-with-hashcat/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performing-hash-cracking-with-hashcat", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill performing-hash-cracking-with-hashcat -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install mukul975/Anthropic-Cybersecurity-Skills performing-hash-cracking-with-hashcat --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/performing-hash-cracking-with-hashcat .cursor/skills/performing-hash-cracking-with-hashcat && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "performing-hash-cracking-with-hashcat" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/performing-hash-cracking-with-hashcat into .cursor/skills/performing-hash-cracking-with-hashcat/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performing-hash-cracking-with-hashcat", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git --path skills/performing-hash-cracking-with-hashcat--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill performing-hash-cracking-with-hashcat -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install mukul975/Anthropic-Cybersecurity-Skills performing-hash-cracking-with-hashcat --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/performing-hash-cracking-with-hashcat .gemini/skills/performing-hash-cracking-with-hashcat && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "performing-hash-cracking-with-hashcat" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/performing-hash-cracking-with-hashcat into .gemini/skills/performing-hash-cracking-with-hashcat/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performing-hash-cracking-with-hashcat", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install mukul975/Anthropic-Cybersecurity-Skills performing-hash-cracking-with-hashcatInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill performing-hash-cracking-with-hashcat -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/performing-hash-cracking-with-hashcat .github/skills/performing-hash-cracking-with-hashcat && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "performing-hash-cracking-with-hashcat" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/performing-hash-cracking-with-hashcat into .github/skills/performing-hash-cracking-with-hashcat/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performing-hash-cracking-with-hashcat", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill performing-hash-cracking-with-hashcat -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install mukul975/Anthropic-Cybersecurity-Skills performing-hash-cracking-with-hashcat --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/performing-hash-cracking-with-hashcat .opencode/skills/performing-hash-cracking-with-hashcat && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "performing-hash-cracking-with-hashcat" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/performing-hash-cracking-with-hashcat into .opencode/skills/performing-hash-cracking-with-hashcat/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performing-hash-cracking-with-hashcat", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
performing-hash-cracking-with-hashcat- GitHub stars
- 34k
- Token cost
- ~893 tokens
- SKILL.md length
- 348 words
- Files
- 8 (incl. scripts, references, assets)
- Skills in repo
- 644
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Cracks password hashes with Hashcat, covering hash-type identification, dictionary/brute-force/rule-based attack modes, custom rule creation, GPU benchmarking, and password-strength/compliance…
- Authorized penetration testing
- SKILL.md covers Overview, When to Use, Prerequisites and Objectives, plus 3 more sections
- Runs Python scripts from its folder
- Security audits that need to evaluate password strength
What it does
Performing Hash Cracking With Hashcat is an agent skill from mukul975/Anthropic-Cybersecurity-Skills. Cracks password hashes with Hashcat, covering hash-type identification, dictionary/brute-force/rule-based attack modes, custom rule creation, GPU benchmarking, and password-strength/compliance reporting. Use for authorized penetration testing or security audits that need to evaluate password strength or crack captured hashes.
Its SKILL.md is about 890 tokens, which your agent loads only when the skill is triggered. The skill folder holds 10 other files, including scripts, reference files and assets (for example `assets/template.md`, `references/api-reference.md` and `references/standards.md`).
It sits in Security, covering Security review and Penetration testing. The repository describes itself as: 817 structured cybersecurity skills for AI agents · Mapped to 6 frameworks: MITRE ATT&CK, NIST CSF 2.0, MITRE ATLAS, D3FEND, NIST AI RMF & MITRE F3 (Fight Fraud) · agentskills.io…. The licence is Apache-2.0.
When your agent uses it
- Authorized penetration testing
- Security audits that need to evaluate password strength
- Crack captured hashes
Example prompts
- “Use the performing-hash-cracking-with-hashcat skill to crack password hashes with Hashcat, covering hash-type identification…”
- “/performing-hash-cracking-with-hashcat”
Requirements
- Python 3
What it can do on your machine
Read from SKILL.md and the folder at commit 54a7988. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 2 files in scripts/ (Python), which the agent can run.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Performing Hash Cracking With Hashcat loads about 893 tokens when it runs, and up to ~1.9k if it reads all its reference files. Until then it costs about 91 tokens; SKILL.md has 348 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.
SKILL.md
The full file from mukul975/Anthropic-Cybersecurity-Skills at commit 54a7988, republished under its Apache-2.0 licence (© mukul975). 348 words, ~893 tokens.
Download SKILL.mdSave it as
.claude/skills/performing-hash-cracking-with-hashcat/SKILL.md (or your agent's skills folder). This skill also uses 7 other files; get the full folder from GitHub.- name
- performing-hash-cracking-with-hashcat
- description
- Cracks password hashes with Hashcat, covering hash-type identification, dictionary/brute-force/rule-based attack modes, custom rule creation, GPU benchmarking, and password-strength/compliance reporting. Use for authorized penetration testing or security audits that need to evaluate password strength or crack captured hashes.
- domain
- cybersecurity
- subdomain
- cryptography
- tags
- cryptography, hash-cracking, password-security, hashcat, penetration-testing
- version
- 1.0
- author
- mahipal
- license
- Apache-2.0
- nist_csf
- PR.DS-01, PR.DS-02, PR.DS-10
- mitre_attack
- T1600, T1573, T1553
Performing Hash Cracking with Hashcat
Overview
Hash cracking is an essential skill for penetration testers and security auditors to evaluate password strength. Hashcat is the world's fastest password recovery tool, supporting over 300 hash types with GPU acceleration. This skill covers using hashcat for authorized password auditing, understanding attack modes, creating effective rule sets, and generating hash analysis reports. This is strictly for authorized penetration testing and password policy assessment.
When to Use
- When conducting security assessments that involve performing hash cracking with hashcat
- When following incident response procedures for related security events
- When performing scheduled security testing or auditing activities
- When validating security controls through hands-on testing
Prerequisites
- Familiarity with cryptography concepts and tools
- Access to a test or lab environment for safe execution
- Python 3.8+ with required dependencies installed
- Appropriate authorization for any testing activities
Objectives
- Identify hash types from captured hashes
- Execute dictionary, brute-force, and rule-based attacks
- Create custom hashcat rules for targeted cracking
- Analyze password strength from cracking results
- Generate compliance reports on password policy effectiveness
- Benchmark GPU performance for hash cracking
Key Concepts
Hashcat Attack Modes
| Mode | Flag | Description | Use Case |
|---|---|---|---|
| Dictionary | -a 0 | Wordlist attack | Known password patterns |
| Combination | -a 1 | Combine two wordlists | Compound passwords |
| Brute-force | -a 3 | Mask-based enumeration | Short passwords |
| Rule-based | -a 0 -r | Dictionary + transformation rules | Complex variations |
| Hybrid | -a 6/7 | Wordlist + mask | Passwords with appended numbers |
Common Hash Types
| Hash Mode | Type | Example Use |
|---|---|---|
| 0 | MD5 | Legacy web apps |
| 100 | SHA-1 | Legacy systems |
| 1000 | NTLM | Windows credentials |
| 1800 | sha512crypt | Linux /etc/shadow |
| 3200 | bcrypt | Modern web apps |
| 13100 | Kerberos TGS-REP | Active Directory |
Security Considerations
- Only perform hash cracking with explicit written authorization
- Secure all captured hash data in transit and at rest
- Report all cracked passwords immediately to asset owners
- Use results to improve password policies, not exploit users
- Destroy cracked password data after engagement concludes
- Follow rules of engagement for penetration test scope
Validation Criteria
- Hash type identification is correct
- Dictionary attack cracks weak passwords
- Rule-based attack cracks policy-compliant passwords
- Mask attack cracks short passwords
- Results report shows password strength distribution
- All operations performed within authorized scope
© mukul975, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 7 other files (scripts, references, assets) in skills/performing-hash-cracking-with-hashcat of mukul975/Anthropic-Cybersecurity-Skills.
- SKILL.md
- LICENSE
- assets/template.md
- references/api-reference.md
- references/standards.md
- references/workflows.md
- scripts/agent.py
- scripts/process.py
Open the folder on GitHubat commit 54a7988
Compare with similar skills
Performing Hash Cracking With Hashcat next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Performing Hash Cracking With Hashcat this skillmukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~893 | Automated safety check: Pass | Apache-2.0 | |
| Strix Code Vulnerability Scanusestrix/strix | 68k | — | ~1.1k | Automated safety check: Pass | Apache-2.0 | |
| Code Audit3stoneBrother/code-audit | 892 | 1 repos | ~2.7k | Automated safety check: Pass | None | |
| Wooyun Legacytanweai/wooyun-legacy | 1.8k | — | ~1.9k | Automated safety check: Pass | Custom licence | |
| Penetration Flowlingbol088-spec/ReiPenFlow | 222 | — | ~1.8k | Automated safety check: Pass | MIT | |
| Myrqenstijnswapped/Myrqen | 137 | — | ~2.1k | Automated safety check: Pass | Custom licence |
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Related
Categories
Questions about Performing Hash Cracking With Hashcat
What does Performing Hash Cracking With Hashcat do?
Cracks password hashes with Hashcat, covering hash-type identification, dictionary/brute-force/rule-based attack modes, custom rule creation, GPU benchmarking, and password-strength/compliance…. Performing Hash Cracking With Hashcat is an agent skill from mukul975/Anthropic-Cybersecurity-Skills. Cracks password hashes with Hashcat, covering hash-type identification, dictionary/brute-force/rule-based attack modes, custom rule creation, GPU benchmarking, and password-strength/compliance reporting.
When should I use Performing Hash Cracking With Hashcat?
Performing Hash Cracking With Hashcat fits situations like: authorized penetration testing; security audits that need to evaluate password strength; crack captured hashes.
How do I install Performing Hash Cracking With Hashcat in Claude Code?
Run `npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill performing-hash-cracking-with-hashcat -a claude-code`. Or copy the skill folder (skills/performing-hash-cracking-with-hashcat in mukul975/Anthropic-Cybersecurity-Skills) into .claude/skills/performing-hash-cracking-with-hashcat in your project. Claude Code loads it when a task matches its description.
How do I install Performing Hash Cracking With Hashcat in Codex?
Run `npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill performing-hash-cracking-with-hashcat -a codex`. Or copy the skill folder (skills/performing-hash-cracking-with-hashcat in mukul975/Anthropic-Cybersecurity-Skills) into .agents/skills/performing-hash-cracking-with-hashcat in your project. Codex loads it when a task matches its description.
Can I use Performing Hash Cracking With Hashcat in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill performing-hash-cracking-with-hashcat -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/performing-hash-cracking-with-hashcat, .gemini/skills/performing-hash-cracking-with-hashcat, .github/skills/performing-hash-cracking-with-hashcat and .opencode/skills/performing-hash-cracking-with-hashcat in your project.
What does Performing Hash Cracking With Hashcat need to run?
Going by SKILL.md and its folder, Performing Hash Cracking With Hashcat needs Python for the scripts in its folder. Our summary lists: Python 3.
Does Performing Hash Cracking With Hashcat access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Performing Hash Cracking With Hashcat safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Performing Hash Cracking With Hashcat use?
Performing Hash Cracking With Hashcat is published under the Apache-2.0 licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Performing Hash Cracking With Hashcat use?
About 893 tokens (SKILL.md is roughly 3.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 997 tokens, read only when the agent opens those files.
What are the alternatives to Performing Hash Cracking With Hashcat?
Skills that share tags, products or a category with Performing Hash Cracking With Hashcat: Strix Code Vulnerability Scan (usestrix/strix, 68k stars), Code Audit (3stoneBrother/code-audit, 892 stars), Wooyun Legacy (tanweai/wooyun-legacy, 1.8k stars) and Penetration Flow (lingbol088-spec/ReiPenFlow, 222 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Performing Hash Cracking With Hashcat?
mukul975 (a GitHub user) maintains it in mukul975/Anthropic-Cybersecurity-Skills, which has 34,116 GitHub stars. The repository holds 644 skills in this directory. The repository was last updated on August 31, 2026.
Source: mukul975/Anthropic-Cybersecurity-Skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.