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John Crack

  • 22 installs
  • 1.6k repo stars
  • Updated July 19, 2026
  • wgpsec/aboutsecurity

Helps with ai & agent building tasks during AI-assisted development.

About

john-crack is a Claude Code skill for ai & agent building. It helps solo builders move faster with AI-assisted coding.

  • john-crack
  • AI & Agent Building
  • AI-coding skill

John Crack by the numbers

  • 22 all-time installs (skills.sh)
  • +2 installs in the week ending Jul 27, 2026 (Skillselion tracking)
  • Ranked #10,137 of 16,546 AI & Agent Building skills by installs in the Skillselion catalog
  • Data as of Aug 5, 2026 (Skillselion catalog sync)
npx skills add https://github.com/wgpsec/aboutsecurity --skill john-crack

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Listed on Skillselion
Installs22
repo stars1.6k
Last updatedJuly 19, 2026
Repositorywgpsec/aboutsecurity

What it does

Helps with ai & agent building tasks during AI-assisted development.

Files

SKILL.mdMarkdownGitHub ↗

John the Ripper 离线密码破解方法论

John the Ripper 是最经典的离线密码破解工具。核心优势:自动哈希识别 + 丰富规则引擎 + *2john 提取工具链。支持 200+ 哈希类型。

项目地址:https://github.com/openwall/john

Phase 1: 基本破解

# 自动检测哈希类型并破解
john hashes.txt

# 指定哈希格式
john --format=Raw-MD5 hashes.txt
john --format=NT hashes.txt
john --format=Raw-SHA256 hashes.txt

# 字典攻击
john --wordlist=rockyou.txt hashes.txt

# 查看已破解的密码
john --show hashes.txt

Phase 2: 规则变形攻击

# 字典 + 默认规则
john --wordlist=rockyou.txt --rules hashes.txt

# 字典 + best64 规则(最常用)
john --wordlist=rockyou.txt --rules=best64 hashes.txt

# 字典 + Jumbo 规则(更全面)
john --wordlist=rockyou.txt --rules=Jumbo hashes.txt

# 字典 + KoreLogic 规则(最复杂,最慢)
john --wordlist=rockyou.txt --rules=KoreLogic hashes.txt

# 列出可用规则
john --list=rules

Phase 3: 哈希提取(*2john 工具链)

# ZIP 文件
zip2john secret.zip > zip_hash.txt
john zip_hash.txt

# RAR 文件
rar2john secret.rar > rar_hash.txt

# PDF 文件
pdf2john.pl secret.pdf > pdf_hash.txt

# SSH 私钥
ssh2john id_rsa > ssh_hash.txt

# KeePass 数据库
keepass2john database.kdbx > keepass_hash.txt

# Office 文档
office2john document.docx > office_hash.txt

# Kerberos TGS (Kerberoasting)
john --format=krb5tgs --wordlist=rockyou.txt tgs_hashes.txt

# Kerberos AS-REP (AS-REP Roasting)
john --format=krb5asrep --wordlist=rockyou.txt asrep_hashes.txt

# NTLM Hash
john --format=NT --wordlist=rockyou.txt ntlm_hashes.txt

Phase 4: 增量和掩码攻击

# 增量模式(纯暴力,自动递增长度)
john --incremental hashes.txt

# 指定字符集
john --incremental=Digits hashes.txt     # 纯数字
john --incremental=Alnum hashes.txt      # 字母数字
john --incremental=ASCII hashes.txt      # 全 ASCII

# 掩码攻击(Hashcat 风格)
john --mask='?d?d?d?d?d?d' hashes.txt          # 6 位数字
john --mask='?u?l?l?l?d?d?d?s' hashes.txt      # 大写+小写x3+数字x3+特殊

Phase 5: 实用技巧

# 恢复中断的破解
john --restore

# 查看当前进度
john --status

# 多核并行
john --fork=4 --wordlist=rockyou.txt hashes.txt

# 指定会话名称
john --session=my_crack --wordlist=rockyou.txt hashes.txt

# 只破解特定用户
john --users=admin hashes.txt

渗透测试常用场景

场景命令
NTLM 破解john --format=NT --wordlist=rockyou.txt ntlm.txt
Kerberoastingjohn --format=krb5tgs --wordlist=rockyou.txt tgs.txt
SSH 密钥破解ssh2john id_rsa > h.txt && john --wordlist=rockyou.txt h.txt
ZIP 密码破解zip2john file.zip > h.txt && john h.txt
Linux shadowjohn --wordlist=rockyou.txt /tmp/shadow
字典+规则john --wordlist=rockyou.txt --rules=best64 hashes.txt

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