1270 lines
35 KiB
Markdown
1270 lines
35 KiB
Markdown
<p align="center">
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<img src="https://github.com/trimstray/awesome-ninja-admins/blob/master/doc/img/awesome_ninja_admins.png"
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alt="Master">
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</p>
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<br>
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<h4 align="center">A collection of awesome lists, manuals, blogs, hacks, one-liners and tools for <b>Awesome Ninja Admins</b>.</h4>
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<br>
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<p align="center">
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<a href="https://github.com/trimstray/awesome-ninja-admins/tree/master">
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<img src="https://img.shields.io/badge/Branch-master-green.svg?longCache=true"
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alt="Branch">
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</a>
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<a href="https://awesome.re">
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<img src="https://awesome.re/badge.svg"
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alt="Awesome">
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<a href="https://github.com/trimstray/awesome-ninja-admins">
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<img src="https://img.shields.io/badge/Status-09072018-red.svg?longCache=true"
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alt="Status">
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</a>
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<a href="http://www.gnu.org/licenses/">
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<img src="https://img.shields.io/badge/License-GNU-blue.svg?longCache=true"
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alt="License">
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</a>
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</p>
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<div align="center">
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<sub>Created by
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<a href="https://twitter.com/trimstray">trimstray</a> and
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<a href="https://github.com/trimstray/awesome-ninja-admins/graphs/contributors">
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contributors
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</a>
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</div>
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<br>
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***
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## Who is Ninja Admins?
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- race of pure evil who rule the network through a monarchistic feudelic system
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- they never opened the door for strangers (or anyone at all)
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- they know very nasty piece of code like a **[fork bombs](https://en.wikipedia.org/wiki/Fork_bomb)**
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- they can make dd is not a **[destroyer of disks](http://www.noah.org/wiki/Dd_-_Destroyer_of_Disks)**
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- they know that `#!/usr/bin/env bash` superior to `#!/bin/bash`
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- they know that `su -` logs in completely as root
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- they miss and cry for **[Slackware](http://www.slackware.com/)** on production
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- they love the old admin nix-world
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## :ballot_box_with_check: Todo
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- [ ] Add useful shell functions
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- [ ] Add one-liners for collection tools (eg. CLI Tools)
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- [ ] Add Ninja Admins T-Shirt stickers
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- [ ] Generate Awesome Ninja Admins book (eg. pdf format)
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## Ninja Admins Collection
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#### CLI Tools
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##### :black_small_square: Shells
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<p>
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:small_orange_diamond: <a href="https://ohmyz.sh/"><b>Oh My ZSH!</b></a> - the best framework for managing your Zsh configuration.<br>
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:small_orange_diamond: <a href="https://github.com/Bash-it/bash-it"><b>bash-it</b></a> - a community Bash framework.<br>
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</p>
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##### :black_small_square: Managers
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<p>
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:small_orange_diamond: <a href="https://midnight-commander.org/"><b>Midnight Commander</b></a> - visual file manager, licensed under GNU General Public License.<br>
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:small_orange_diamond: <a href="https://www.gnu.org/software/screen/"><b>screen</b></a> - full-screen window manager that multiplexes a physical terminal.<br>
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:small_orange_diamond: <a href="https://github.com/tmux/tmux/wiki"><b>tmux</b></a> - terminal multiplexer, lets you switch easily between several programs in one terminal.<br>
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</p>
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##### :black_small_square: Network
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<p>
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:small_orange_diamond: <a href="https://curl.haxx.se/"><b>Curl</b></a> - command line tool and library
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for transferring data with URLs.<br>
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:small_orange_diamond: <a href="https://github.com/jkbrzt/httpie"><b>HTTPie</b></a> - a user-friendly HTTP client.<br>
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:small_orange_diamond: <a href="https://gnutls.org/manual/html_node/gnutls_002dcli-Invocation.html"><b>gnutls-cli</b></a> - client program to set up a TLS connection to some other computer.<br>
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:small_orange_diamond: <a href="http://netcat.sourceforge.net/"><b>netcat</b></a> - networking utility which reads and writes data across network connections, using the TCP/IP protocol.<br>
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:small_orange_diamond: <a href="https://www.tcpdump.org/"><b>tcpdump</b></a> - powerful command-line packet analyzer.<br>
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</p>
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##### :black_small_square: Databases
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<p>
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:small_orange_diamond: <a href="https://github.com/dbcli/pgcli"><b>pgcli</b></a> - postgres CLI with autocompletion and syntax highlighting.<br>
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:small_orange_diamond: <a href="https://github.com/dbcli/mycli"><b>mycli</b></a> - terminal client for MySQL with autocompletion and syntax highlighting.<br>
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</p>
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#### Web Tools
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##### :black_small_square: SSL
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<p>
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:small_orange_diamond: <a href="https://www.ssllabs.com/ssltest/"><b>SSL Server Test</b></a> - free online service performs a deep analysis of the configuration of any SSL web server.<br>
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:small_orange_diamond: <a href="https://dev.ssllabs.com/ssltest/"><b>SSL Server Test (DEV)</b></a> - free online service performs a deep analysis of the configuration of any SSL web server.<br>
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:small_orange_diamond: <a href="https://www.htbridge.com/ssl/"><b>ImmuniWeb® SSLScan</b></a> - test SSL/TLS (PCI DSS, HIPAA and NIST).<br>
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:small_orange_diamond: <a href="https://report-uri.com/home/tools"><b>Report URI</b></a> - monitoring security policies like CSP and HPKP.<br>
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:small_orange_diamond: <a href="https://csp-evaluator.withgoogle.com/"><b>CSP Evaluator</b></a> - allows developers and security experts to check if a Content Security Policy.<br>
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:small_orange_diamond: <a href="https://ccadb.org/resources"><b>Common CA Database</b></a> - repository of information about CAs, and their root and intermediate certificates.<br>
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:small_orange_diamond: <a href="https://certstream.calidog.io/"><b>CERTSTREAM</b></a> - real-time certificate transparency log update stream.<br>
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</p>
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##### :black_small_square: HTTP Headers
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<p>
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:small_orange_diamond: <a href="https://securityheaders.com/"><b>Security Headers</b></a> - analyse the HTTP response headers (with rating system to the results).<br>
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:small_orange_diamond: <a href="https://observatory.mozilla.org/"><b>Observatory by Mozilla</b></a> - set of tools to analyze your website.<br>
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</p>
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##### :black_small_square: DNS
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<p>
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:small_orange_diamond: <a href="http://viewdns.info/"><b>ViewDNS</b></a> - one source for free DNS related tools and information.<br>
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:small_orange_diamond: <a href="https://dnsspy.io/"><b>DNS Spy</b></a> - monitor, validate and verify your DNS configurations.<br>
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:small_orange_diamond: <a href="https://dnslytics.com/"><b>DNSlytics</b></a> - online investigation tool.<br>
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</p>
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##### :black_small_square: Mail
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<p>
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:small_orange_diamond: <a href="https://mxtoolbox.com/SuperTool.aspx"><b>MX Toolbox</b></a> - all of your MX record, DNS, blacklist and SMTP diagnostics in one integrated tool.<br>
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</p>
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##### :black_small_square: Mass scanners (search engines)
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<p>
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:small_orange_diamond: <a href="https://censys.io/"><b>Censys</b></a> - platform that helps information security practitioners discover, monitor, and analyze devices.<br>
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:small_orange_diamond: <a href="https://www.shodan.io/"><b>Shodan</b></a> - the world's first search engine for Internet-connected devices.<br>
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:small_orange_diamond: <a href="https://viz.greynoise.io/table"><b>GreyNoise</b></a> - mass scanner (such as Shodan and Censys).<br>
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</p>
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##### :black_small_square: Net-tools
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<p>
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:small_orange_diamond: <a href="https://toolbar.netcraft.com/site_report"><b>Netcraft</b></a> - detailed report about the site, helping you to make informed choices about their integrity.<br>
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:small_orange_diamond: <a href="https://securitytrails.com/"><b>Security Trails</b></a> - APIs for Security Companies, Researchers and Teams.<br>
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:small_orange_diamond: <a href="https://tools.keycdn.com/curl"><b>Online Curl</b></a> - curl test, analyze HTTP Response Headers.<br>
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:small_orange_diamond: <a href="http://ping.eu/"><b>Ping.eu</b></a> - online Ping, Traceroute, DNS lookup, WHOIS and others.<br>
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:small_orange_diamond: <a href="https://network-tools.com/"><b>Network-Tools</b></a> - network tools for webmasters, IT technicians & geeks.<br>
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:small_orange_diamond: <a href="https://www.url-encode-decode.com/"><b>URL Encode/Decode</b></a> - tool from above to either encode or decode a string of text.<br>
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:small_orange_diamond: <a href="https://www.hardenize.com/"><b>Hardenize</b></a> - deploy the security standards.<br>
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</p>
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##### :black_small_square: Performance
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<p>
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:small_orange_diamond: <a href="https://gtmetrix.com/"><b>GTmetrix</b></a> - analyze your site’s speed and make it faster.<br>
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:small_orange_diamond: <a href="https://performance.sucuri.net/"><b>Sucuri loadtimetester</b></a> - test here the
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performance of any of your sites from across the globe.<br>
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</p>
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##### :black_small_square: Passwords
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<p>
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:small_orange_diamond: <a href="https://www.random.org/passwords/"><b>Random.org</b></a> - generate random passwords.<br>
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:small_orange_diamond: <a href="https://gotcha.pw/"><b>Gotcha?</b></a> - list of 1.4 billion accounts circulates around the Internet.<br>
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:small_orange_diamond: <a href="https://haveibeenpwned.com/"><b>have i been pwned?</b></a> - check if you have an account that has been compromised in a data breach.<br>
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</p>
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#### Manuals/Howtos/Tutorials
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##### :black_small_square: Bash
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<p>
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:small_orange_diamond: <a href="https://github.com/dylanaraps/pure-bash-bible"><b>pure-bash-bible</b></a> - a collection of pure bash alternatives to external processes.<br>
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:small_orange_diamond: <a href="http://wiki.bash-hackers.org/start"><b>The Bash Hackers Wiki</b></a> - hold documentation of any kind about GNU Bash.<br>
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</p>
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##### :black_small_square: Unix tutorials
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<p>
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:small_orange_diamond: <a href="https://www.cyberciti.biz/"><b>nixCraft</b></a> - linux and unix tutorials for new and seasoned sysadmin.<br>
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:small_orange_diamond: <a href="https://www.tecmint.com/"><b>TecMint</b></a> - the ideal Linux blog for Sysadmins & Geeks.<br>
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</p>
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##### :black_small_square: Hacking
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<p>
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:small_orange_diamond: <a href="http://www.hackingarticles.in/"><b>Hacking Articles</b></a> - LRaj Chandel's Security & Hacking Blog.<br>
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</p>
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#### Blogs
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<p>
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:small_orange_diamond: <a href="http://www.brendangregg.com/"><b>Brendan Gregg's Blog</b></a> - Brendan Gregg is an industry expert in computing performance and cloud computing.<br>
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:small_orange_diamond: <a href="http://gynvael.coldwind.pl/"><b>Gynvael "GynDream" Coldwind</b></a> - Gynvael is a IT security engineer at Google.<br>
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:small_orange_diamond: <a href="http://lcamtuf.coredump.cx/"><b>Michał "lcamtuf" Zalewski</b></a> - "white hat" hacker, computer security expert.<br>
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:small_orange_diamond: <a href="https://ma.ttias.be/"><b>Mattias Geniar</b></a> - developer, Sysadmin, Blogger, Podcaster and Public Speaker.<br>
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:small_orange_diamond: <a href="https://nickcraver.com/"><b>Nick Craver</b></a> - Software Developer and Systems Administrator for Stack Exchange.<br>
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:small_orange_diamond: <a href="https://robert.penz.name/"><b>Robert Penz</b></a> - IT security Expert.<br>
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:small_orange_diamond: <a href="https://scotthelme.co.uk/"><b>Scott Helme</b></a> - Security Researcher, international speaker and founder of securityheaders.com and report-uri.com.<br>
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:small_orange_diamond: <a href="https://security.szurek.pl/"><b>Kacper Szurek</b></a> - Detection Engineer at ESET.<br>
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:small_orange_diamond: <a href="https://www.troyhunt.com/"><b>Troy Hunt</b></a> - Microsoft Regional Director and Microsoft Most Valuable Professional for Developer Security.<br>
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:small_orange_diamond: <a href="https://linux-audit.com/"><b>Linux Audit</b></a> - the Linux security blog about Auditing, Hardening, and Compliance by Michael Boelen.<br>
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:small_orange_diamond: <a href="http://www.grymoire.com/"><b>The Grymoire</b></a> - collection of useful incantations for wizards, be you computer wizards, magicians, or whatever.<br>
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</p>
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#### Systems/Services
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##### :black_small_square: Systems
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<p>
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:small_orange_diamond: <a href="http://www.slackware.com/"><b>Slackware</b></a> - the most "Unix-like" Linux distribution.<br>
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:small_orange_diamond: <a href="https://www.openbsd.org/"><b>OpenBSD</b></a> - multi-platform 4.4BSD-based UNIX-like operating system.<br>
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:small_orange_diamond: <a href="https://hardenedbsd.org/"><b>HardenedBSD</b></a> - HardenedBSD aims to implement innovative exploit mitigation and security solutions.<br>
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</p>
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##### :black_small_square: HTTP(s) Services
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<p>
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:small_orange_diamond: <a href="https://varnish-cache.org/"><b>Varnish HTTP Cache</b></a> - HTTP accelerator designed for content-heavy dynamic web sites.<br>
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</p>
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##### :black_small_square: Security/hardening
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<p>
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:small_orange_diamond: <a href="https://emeraldonion.org/"><b>Emerald Onion</b></a> - Seattle-based encrypted-transit internet service provider.<br>
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</p>
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#### Lists
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<p>
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:small_orange_diamond: <a href="https://github.com/kahun/awesome-sysadmin"><b>Awesome Sysadmin</b></a> - amazingly awesome open source sysadmin resources.<br>
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:small_orange_diamond: <a href="https://github.com/alebcay/awesome-shell"><b>Awesome Shell</b></a> - awesome command-line frameworks, toolkits, guides and gizmos.<br>
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:small_orange_diamond: <a href="https://github.com/Hack-with-Github/Awesome-Hacking"><b>Awesome-Hacking</b></a> - awesome lists for hackers, pentesters and security researchers.<br>
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</p>
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#### Hacking/Penetration testing
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##### :black_small_square: Bounty programs
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<p>
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:small_orange_diamond: <a href="https://www.openbugbounty.org/"><b>Openbugbounty</b></a> - allows any security researcher reporting a vulnerability on any website.<br>
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:small_orange_diamond: <a href="https://www.hackerone.com/"><b>hackerone</b></a> - global hacker community to surface the most relevant security issues.<br>
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:small_orange_diamond: <a href="https://www.bugcrowd.com/"><b>bugcrowd</b></a> - crowdsourced cybersecurity for the enterprise.<br>
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:small_orange_diamond: <a href="https://crowdshield.com/"><b>Crowdshield</b></a> - crowdsourced Security & Bug Bounty Management.<br>
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</p>
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##### :black_small_square: Web Training Apps
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<p>
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:small_orange_diamond: <a href="http://www.dvwa.co.uk/"><b>DVWA</b></a> - PHP/MySQL web application that is damn vulnerable.<br>
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:small_orange_diamond: <a href="https://sourceforge.net/projects/mutillidae/"><b>OWASP Mutillidae II</b></a> - free, open source, deliberately vulnerable web-application.<br>
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:small_orange_diamond: <a href="https://www.owasp.org/index.php/OWASP_Juice_Shop_Project"><b>OWASP Juice Shop Project</b></a> - the most bug-free vulnerable application in existence.<br>
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:small_orange_diamond: <a href="https://www.owasp.org/index.php/Category:OWASP_WebGoat_Project"><b>OWASP WebGoat Project</b></a> - insecure web application maintained by OWASP designed to teach web app security.<br>
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:small_orange_diamond: <a href="https://github.com/opendns/Security_Ninjas_AppSec_Training"><b>Security Ninjas</b></a> - open source application security training program.<br>
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</p>
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#### One-liners
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##### Table of Contents
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- **[System](#system)**
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* [terminal](#tool-terminal)
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* [mount](#tool-mount)
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* [fuser](#tool-fuser)
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* [ps](#tool-ps)
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* [top](#tool-top)
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* [find](#tool-find)
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* [diff](#tool-diff)
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* [tail](#tool-tail)
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* [cpulimit](#tool-cpulimit)
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* [pwdx](#tool-pwdx)
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* [tr](#tool-tr)
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* [chmod](#tool-chmod)
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* [who](#tool-who)
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* [screen](#tool-screen)
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* [du](#tool-du)
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* [inotifywait](#tool-inotifywait)
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* [openssl](#tool-openssl)
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- **[HTTP/HTTPS](#http-https)**
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* [curl](#tool-curl)
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* [httpie](#tool-httpie)
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- **[Network](#network)**
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* [ssh](#tool-ssh)
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* [linux-dev](#tool-linux-dev)
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* [tcpdump](#tool-tcpdump)
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* [ngrep](#tool-ngrep)
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* [hping3](#tool-hping3)
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* [netcat](#tool-netcat)
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* [socat](#tool-socat)
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* [lsof](#tool-lsof)
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* [netstat](#tool-netstat)
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* [rsync](#tool-rsync)
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- **[Programming](#programming)**
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* [awk](#tool-awk)
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* [sed](#tool-sed)
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* [grep](#tool-grep)
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<a name="system"><b>System</b></a>
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|
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##### Tool: [terminal](https://en.wikipedia.org/wiki/Linux_console)
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###### Close shell keeping all subprocess running
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```bash
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disown -a && exit
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```
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###### Exit without saving shell history
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```bash
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kill -9 $$
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unset HISTFILE && exit
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```
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###### Perform a branching conditional
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||
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```bash
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true && { echo success;} || { echo failed; }
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```
|
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||
###### Pipe stdout and stderr to separate commands
|
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|
||
```bash
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some_command > >(/bin/cmd_for_stdout) 2> >(/bin/cmd_for_stderr)
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```
|
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|
||
###### Pipe stdout and stderr to separate commands
|
||
|
||
```bash
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(some_command 2>&1 1>&3 | tee errorlog ) 3>&1 1>&2 | tee stdoutlog
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```
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###### List of commands you use most often
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||
```bash
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history | awk '{ a[$2]++ } END { for(i in a) { print a[i] " " i } }' | sort -rn | head
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```
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||
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###### Quickly backup a file
|
||
|
||
```bash
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cp filename{,.orig}
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```
|
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||
###### Delete all files in a folder that don't match a certain file extension
|
||
|
||
```bash
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rm !(*.foo|*.bar|*.baz)
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```
|
||
|
||
###### Edit a file on a remote host using vim
|
||
|
||
```bash
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vim scp://user@host//etc/fstab
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```
|
||
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||
###### Create a directory and change into it at the same time
|
||
|
||
```bash
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mkd () { mkdir -p "$@" && cd "$@"; }
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```
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||
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||
###### Convert uppercase files to lowercase files
|
||
|
||
```bash
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rename 'y/A-Z/a-z/' *
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||
```
|
||
|
||
###### Print a row of characters across the terminal
|
||
|
||
```bash
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printf "%`tput cols`s" | tr ' ' '#'
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||
```
|
||
|
||
###### Show shell history without line numbers
|
||
|
||
```bash
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||
history | cut -c 8-
|
||
fc -l -n 1 | sed 's/^\s*//'
|
||
```
|
||
|
||
___
|
||
|
||
##### Tool: [mount](https://en.wikipedia.org/wiki/Mount_(Unix))
|
||
|
||
###### Mount a temporary ram partition
|
||
|
||
```bash
|
||
mount -t tmpfs tmpfs /mnt -o size=64M
|
||
```
|
||
|
||
* `-t` - filesystem type
|
||
* `-o` - mount options
|
||
|
||
___
|
||
|
||
##### Tool: [fuser](https://en.wikipedia.org/wiki/Fuser_(Unix))
|
||
|
||
###### Kills a process that is locking a file
|
||
|
||
```bash
|
||
fuser -k filename
|
||
```
|
||
|
||
###### Show what PID is listening on specific port
|
||
|
||
```bash
|
||
fuser -v 53/udp
|
||
```
|
||
|
||
___
|
||
|
||
##### Tool: [ps](https://en.wikipedia.org/wiki/Ps_(Unix))
|
||
|
||
###### Show a 4-way scrollable process tree with full details
|
||
|
||
```bash
|
||
ps awwfux | less -S
|
||
```
|
||
|
||
###### Processes per user counter
|
||
|
||
```bash
|
||
ps hax -o user | sort | uniq -c | sort -r
|
||
```
|
||
|
||
___
|
||
|
||
##### Tool: [find](https://en.wikipedia.org/wiki/Find_(Unix))
|
||
|
||
###### Find files that have been modified on your system in the past 60 minutes
|
||
|
||
```bash
|
||
find / -mmin 60 -type f
|
||
```
|
||
|
||
###### Find all files larger than 20M
|
||
|
||
```bash
|
||
find / -type f -size +20M
|
||
```
|
||
|
||
###### Find duplicate files (based on MD5 hash)
|
||
|
||
```bash
|
||
find -type f -exec md5sum '{}' ';' | sort | uniq --all-repeated=separate -w 33
|
||
```
|
||
|
||
###### Change permission only for files
|
||
|
||
```bash
|
||
cd /var/www/site && find . -type f -exec chmod 766 {} \;
|
||
cd /var/www/site && find . -type f -exec chmod 664 {} +
|
||
```
|
||
|
||
###### Change permission only for directories
|
||
|
||
```bash
|
||
cd /var/www/site && find . -type d -exec chmod g+x {} \;
|
||
cd /var/www/site && find . -type d -exec chmod g+rwx {} +
|
||
```
|
||
|
||
###### Find files and directories for specific user
|
||
|
||
```bash
|
||
find . -user <username> -print
|
||
```
|
||
|
||
###### Find files and directories for all without specific user
|
||
|
||
```bash
|
||
find . \!-user <username> -print
|
||
```
|
||
|
||
###### Delete older files than 60 days
|
||
|
||
```bash
|
||
find . -type f -mtime +60 -delete
|
||
```
|
||
|
||
___
|
||
|
||
##### Tool: [top](https://en.wikipedia.org/wiki/Top_(software))
|
||
|
||
###### Use top to monitor only all processes with the specific string
|
||
|
||
```bash
|
||
top -p $(pgrep -d , <str>)
|
||
```
|
||
|
||
* `<str>` - process containing str (eg. nginx, worker)
|
||
|
||
___
|
||
|
||
##### Tool: [diff](https://en.wikipedia.org/wiki/Diff)
|
||
|
||
###### Compare two directory trees
|
||
|
||
```bash
|
||
diff <(cd directory1 && find | sort) <(cd directory2 && find | sort)
|
||
```
|
||
|
||
___
|
||
|
||
##### Tool: [tail](https://en.wikipedia.org/wiki/Tail_(Unix))
|
||
|
||
###### Annotate tail -f with timestamps
|
||
|
||
```bash
|
||
tail -f file | while read; do echo "$(date +%T.%N) $REPLY"; done
|
||
```
|
||
|
||
###### Analyse an Apache access log for the most common IP addresses
|
||
|
||
```bash
|
||
tail -10000 access_log | awk '{print $1}' | sort | uniq -c | sort -n | tail
|
||
```
|
||
|
||
___
|
||
|
||
##### Tool: [cpulimit](http://cpulimit.sourceforge.net/)
|
||
|
||
###### Limit the cpu usage of a process
|
||
|
||
```bash
|
||
cpulimit -p pid -l 50
|
||
```
|
||
|
||
##### Tool: [pwdx](https://www.cyberciti.biz/faq/unix-linux-pwdx-command-examples-usage-syntax/)
|
||
|
||
###### Show current working directory of a process
|
||
|
||
```bash
|
||
pwdx <pid>
|
||
```
|
||
|
||
___
|
||
|
||
##### Tool: [taskset](https://www.cyberciti.biz/faq/taskset-cpu-affinity-command/)
|
||
|
||
###### Start a command on only one CPU core
|
||
|
||
```bash
|
||
taskset -c 0 <command>
|
||
```
|
||
|
||
___
|
||
|
||
##### Tool: [tr](https://en.wikipedia.org/wiki/Tr_(Unix))
|
||
|
||
###### Show directories in the PATH, one per line
|
||
|
||
```bash
|
||
tr : '\n' <<<$PATH
|
||
```
|
||
|
||
##### Tool: [chmod](https://en.wikipedia.org/wiki/Chmod)
|
||
|
||
###### Remove executable bit from all files in the current directory
|
||
|
||
```bash
|
||
chmod -R -x+X *
|
||
```
|
||
|
||
___
|
||
|
||
##### Tool: [who](https://en.wikipedia.org/wiki/Who_(Unix))
|
||
|
||
###### Find last reboot time
|
||
|
||
```bash
|
||
who -b
|
||
```
|
||
|
||
___
|
||
|
||
##### Tool: [screen](https://en.wikipedia.org/wiki/GNU_Screen)
|
||
|
||
###### Start screen in detached mode
|
||
|
||
```bash
|
||
screen -d -m [<command>]
|
||
```
|
||
|
||
___
|
||
|
||
##### Tool: [du](https://en.wikipedia.org/wiki/GNU_Screen)
|
||
|
||
###### Show 20 biggest directories with 'K M G'
|
||
|
||
```bash
|
||
du | sort -r -n | awk '{split("K M G",v); s=1; while($1>1024){$1/=1024; s++} print int($1)" "v[s]"\t"$2}' | head -n 20
|
||
```
|
||
|
||
##### Tool: [inotifywait](https://en.wikipedia.org/wiki/GNU_Screen)
|
||
|
||
###### Init tool everytime a file in a directory is modified
|
||
|
||
```bash
|
||
while true ; do inotifywait -r -e MODIFY dir/ && ls dir/ ; done;
|
||
```
|
||
|
||
##### Tool: [openssl](https://www.openssl.org/)
|
||
|
||
###### Testing connection to remote host
|
||
|
||
```bash
|
||
echo | openssl s_client -connect google.com:443 -showcerts
|
||
```
|
||
|
||
###### Testing connection to remote host with specific ssl version
|
||
|
||
```bash
|
||
openssl s_client -tls1_2 -connect google.com:443
|
||
```
|
||
|
||
###### Testing connection to remote host with specific ssl cipher
|
||
|
||
```bash
|
||
openssl s_client -cipher 'AES128-SHA' -connect google.com:443
|
||
```
|
||
|
||
###### Generate private key
|
||
|
||
```bash
|
||
# _ciph: des3, aes
|
||
( _ciph="des3" ; _fd="private.key" ; _len="2048" ; \
|
||
openssl genrsa -${_ciph} -out ${_fd} ${_len} )
|
||
```
|
||
|
||
###### Remove password from private key
|
||
|
||
```bash
|
||
( _fd="private.key" ; _fd_unp="private_unp.key" ; \
|
||
openssl rsa -in ${_fd} -out ${_fd_unp} )
|
||
```
|
||
|
||
###### Get public key from private key
|
||
|
||
```bash
|
||
( _fd="private.key" ; _fd_pub="public.key" ; \
|
||
openssl rsa -pubout -in ${_fd} -out ${_fd_pub} )
|
||
```
|
||
|
||
###### Generate private key + csr
|
||
|
||
```bash
|
||
( _fd="private.key" ; _fd_csr="request.csr" ; _len="2048" ; \
|
||
openssl req -out ${_fd_csr} -new -newkey rsa:${_len} -nodes -keyout ${_fd} )
|
||
```
|
||
|
||
###### Generate csr
|
||
|
||
```bash
|
||
( _fd="private.key" ; _fd_csr="request.csr" ; \
|
||
openssl req -out ${_fd_csr} -new -key ${_fd} )
|
||
```
|
||
|
||
###### Generate csr (metadata from exist certificate)
|
||
|
||
```bash
|
||
( _fd="private.key" ; _fd_csr="request.csr" ; _fd_crt="cert.crt" ; \
|
||
openssl x509 -x509toreq -in ${_fd_crt} -out ${_fd_csr} -signkey ${_fd} )
|
||
```
|
||
|
||
###### Generate csr with -config param
|
||
|
||
```bash
|
||
( _fd="private.key" ; _fd_csr="request.csr" ; \
|
||
openssl req -new -sha256 -key ${_fd} -out ${_fd_csr} \
|
||
-config <(
|
||
cat <<-EOF
|
||
[req]
|
||
default_bits = 2048
|
||
prompt = no
|
||
default_md = sha256
|
||
req_extensions = req_ext
|
||
distinguished_name = dn
|
||
|
||
[ dn ]
|
||
C=<two-letter ISO abbreviation for your country>
|
||
ST=<state or province where your organization is legally located>
|
||
L=<city where your organization is legally located>
|
||
O=<legal name of your organization>
|
||
OU=<section of the organization>
|
||
CN=<fully qualified domain name>
|
||
|
||
[ req_ext ]
|
||
subjectAltName = @alt_names
|
||
|
||
[ alt_names ]
|
||
DNS.1 = <fully qualified domain name>
|
||
DNS.2 = <next domain>
|
||
DNS.3 = <next domain>
|
||
EOF
|
||
))
|
||
```
|
||
|
||
###### Convert DER to PEM
|
||
|
||
```bash
|
||
( _fd_der="cert.crt" ; _fd_pem="cert.pem" ; \
|
||
openssl x509 -in ${_fd_der} -inform der -outform pem -out ${_fd_pem} )
|
||
```
|
||
|
||
###### Convert PEM to DER
|
||
|
||
```bash
|
||
( _fd_der="cert.crt" ; _fd_pem="cert.pem" ; \
|
||
openssl x509 -in ${_fd_pem} -outform der -out ${_fd_der} )
|
||
```
|
||
|
||
###### Checking whether the private key and the certificate match
|
||
|
||
```bash
|
||
(openssl rsa -noout -modulus -in private.key | openssl md5 ; openssl x509 -noout -modulus -in certificate.crt | openssl md5) | uniq
|
||
```
|
||
|
||
___
|
||
|
||
##### Tool: [gnutls-cli](https://gnutls.org/manual/html_node/gnutls_002dcli-Invocation.html)
|
||
|
||
###### Testing connection to remote host (with sni)
|
||
|
||
```bash
|
||
gnutls-cli -p 443 google.com
|
||
```
|
||
|
||
###### Testing connection to remote host (without sni)
|
||
|
||
```bash
|
||
gnutls-cli --disable-sni -p 443 google.com
|
||
```
|
||
|
||
<a name="http-https"><b>HTTP/HTTPS</b></a>
|
||
|
||
##### Tool: [curl](https://curl.haxx.se)
|
||
|
||
```bash
|
||
curl -Iks https://www.google.com
|
||
```
|
||
|
||
* `-I` - show response headers only
|
||
* `-k` - insecure connection when using ssl
|
||
* `-s` - silent mode (not display body)
|
||
|
||
```bash
|
||
curl -Iks --location -X GET -A "x-agent" https://www.google.com
|
||
```
|
||
|
||
* `--location` - follow redirects
|
||
* `-X` - set method
|
||
* `-A` - set user-agent
|
||
|
||
```bash
|
||
curl -Iks --location -X GET -A "x-agent" --proxy http://127.0.0.1:16379 https://www.google.com
|
||
```
|
||
|
||
* `--proxy [socks5://|http://]` - set proxy server
|
||
|
||
___
|
||
|
||
##### Tool: [httpie](https://httpie.org/)
|
||
|
||
```bash
|
||
http -p Hh https://www.google.com
|
||
```
|
||
|
||
* `-p` - print request and response headers
|
||
* `H` - request headers
|
||
* `B` - request body
|
||
* `h` - response headers
|
||
* `b` - response body
|
||
|
||
```bash
|
||
http -p Hh --follow --max-redirects 5 --verify no https://www.google.com
|
||
```
|
||
|
||
* `-F, --follow` - follow redirects
|
||
* `--max-redirects N` - maximum for `--follow`
|
||
* `--verify no` - skip SSL verification
|
||
|
||
```bash
|
||
http -p Hh --follow --max-redirects 5 --verify no --proxy http:http://127.0.0.1:16379 https://www.google.com
|
||
```
|
||
|
||
* `--proxy [http:]` - set proxy server
|
||
|
||
<a name="network"><b>Network</b></a>
|
||
|
||
##### Tool: [ssh](https://www.openssh.com/)
|
||
|
||
###### Compare a remote file with a local file
|
||
|
||
```bash
|
||
ssh user@host cat /path/to/remotefile | diff /path/to/localfile -
|
||
```
|
||
|
||
###### SSH connection through host in the middle
|
||
|
||
```bash
|
||
ssh -t reachable_host ssh unreachable_host
|
||
```
|
||
|
||
###### Run command over ssh on remote host
|
||
|
||
```bash
|
||
cat > cmd.txt << __EOF__
|
||
cat /etc/hosts
|
||
__EOF__
|
||
|
||
ssh host -l user $(<cmd.txt)
|
||
```
|
||
|
||
###### Get public key from private key
|
||
|
||
```bash
|
||
ssh-keygen -y -f ~/.ssh/id_rsa
|
||
```
|
||
|
||
___
|
||
|
||
##### Tool: [linux-dev](https://www.tldp.org/LDP/abs/html/devref1.html)
|
||
|
||
###### Testing remote connection to port
|
||
|
||
```bash
|
||
timeout 1 bash -c "</dev/<proto>/<host>/<port>" >/dev/null 2>&1 ; echo $?
|
||
```
|
||
|
||
* `<proto` - set protocol (tcp/udp)
|
||
* `<host>` - set remote host
|
||
* `<port>` - set destination port
|
||
|
||
###### Read and write to TCP or UDP sockets with common bash tools
|
||
|
||
```bash
|
||
exec 5<>/dev/tcp/<host>/<port>; cat <&5 & cat >&5; exec 5>&-
|
||
```
|
||
|
||
___
|
||
|
||
##### Tool: [tcpdump](http://www.tcpdump.org/)
|
||
|
||
```bash
|
||
tcpdump -ne -i eth0 -Q in host 192.168.252.1 and port 443
|
||
```
|
||
|
||
* `-n` - don't convert addresses
|
||
* `-e` - print the link-level headers
|
||
* `-i [iface]` - set interface
|
||
* `-Q|-D [in|out|inout]` - choose send/receive direction (`-D` - for old tcpdump versions)
|
||
* `host [ip|hostname]` - set host, also `[host not]`
|
||
* `[and|or]` - set logic
|
||
* `port [1-65535]` - set port number, also `[port not]`
|
||
|
||
```bash
|
||
tcpdump -ne -i eth0 -Q in host 192.168.252.1 and port 443 -c 5 -w tcpdump.pcap
|
||
```
|
||
|
||
* `-c [num]` - capture only num number of packets
|
||
* `-w [filename]` - write packets to file, `-r [filename]` - reading from file
|
||
|
||
___
|
||
|
||
##### Tool: [ngrep](http://ngrep.sourceforge.net/usage.html)
|
||
|
||
```bash
|
||
ngrep -d eth0 "www.google.com" port 443
|
||
```
|
||
|
||
* `-d [iface|any]` - set interface
|
||
* `[domain]` - set hostname
|
||
* `port [1-65535]` - set port number
|
||
|
||
```bash
|
||
ngrep -d eth0 "www.google.com" (host 10.240.20.2) and (port 443)
|
||
```
|
||
|
||
* `(host [ip|hostname])` - filter by ip or hostname
|
||
* `(port [1-65535])` - filter by port number
|
||
|
||
```bash
|
||
ngrep -d eth0 -qt -O ngrep.pcap "www.google.com" port 443
|
||
```
|
||
|
||
* `-q` - quiet mode (only payloads)
|
||
* `-t` - added timestamps
|
||
* `-O [filename]` - save output to file, `-I [filename]` - reading from file
|
||
|
||
```bash
|
||
ngrep -d eth0 -qt 'HTTP' 'tcp'
|
||
```
|
||
|
||
* `HTTP` - show http headers
|
||
* `tcp|udp` - set protocol
|
||
* `[src|dst] host [ip|hostname]` - set direction for specific node
|
||
|
||
```bash
|
||
ngrep -l -q -d eth0 -i "User-Agent: curl*"
|
||
```
|
||
|
||
* `-l` - stdout line buffered
|
||
* `-i` - case-insensitive search
|
||
|
||
___
|
||
|
||
##### Tool: [hping3](http://www.hping.org/)
|
||
|
||
```bash
|
||
hping3 -V -p 80 -s 5050 <scan_type> www.google.com
|
||
```
|
||
|
||
* `-V|--verbose` - verbose mode
|
||
* `-p|--destport` - set destination port
|
||
* `-s|--baseport` - set source port
|
||
* `<scan_type>` - set scan type
|
||
* `-F|--fin` - set FIN flag, port open if no reply
|
||
* `-S|--syn` - set SYN flag
|
||
* `-P|--push` - set PUSH flag
|
||
* `-A|--ack` - set ACK flag (use when ping is blocked, RST response back if the port is open)
|
||
* `-U|--urg` - set URG flag
|
||
* `-Y|--ymas` - set Y unused flag (0x80 - nullscan), port open if no reply
|
||
* `-M 0 -UPF` - set TCP sequence number and scan type (URG+PUSH+FIN), port open if no reply
|
||
|
||
```bash
|
||
hping3 -V -c 1 -1 -C 8 www.google.com
|
||
```
|
||
|
||
* `-c [num]` - packet count
|
||
* `-1` - set ICMP mode
|
||
* `-C|--icmptype [icmp-num]` - set icmp type (default icmp-echo = 8)
|
||
|
||
```bash
|
||
hping3 -V -c 1000000 -d 120 -S -w 64 -p 80 --flood --rand-source <remote_host>
|
||
```
|
||
|
||
* `--flood` - sent packets as fast as possible (don't show replies)
|
||
* `--rand-source` - random source address mode
|
||
* `-d --data` - data size
|
||
* `-w|--win` - winsize (default 64)
|
||
|
||
___
|
||
|
||
##### Tool: [netcat](http://netcat.sourceforge.net/)
|
||
|
||
```bash
|
||
nc -kl 5000
|
||
```
|
||
|
||
* `-l` - listen for an incoming connection
|
||
* `-k` - listening after client has disconnected
|
||
* `>filename.out` - save receive data to file (optional)
|
||
|
||
```bash
|
||
nc 192.168.0.1 5051 < filename.in
|
||
```
|
||
|
||
* `< filename.in` - send data to remote host
|
||
|
||
```bash
|
||
nc -vz 10.240.30.3 5000
|
||
```
|
||
|
||
* `-v` - verbose output
|
||
* `-z` - scan for listening daemons
|
||
|
||
```bash
|
||
nc -vzu 10.240.30.3 1-65535
|
||
```
|
||
|
||
* `-u` - scan only udp ports
|
||
|
||
###### Transfer data file (archive)
|
||
|
||
```bash
|
||
server> nc -l 5000 | tar xzvfp -
|
||
client> tar czvfp - /path/to/dir | nc 10.240.30.3 5000
|
||
```
|
||
|
||
###### Launch remote shell
|
||
|
||
```bash
|
||
server> nc -l 5000 -e /bin/bash
|
||
client> nc 10.240.30.3 5000
|
||
```
|
||
|
||
###### Simple file server
|
||
|
||
```bash
|
||
while true ; do nc -l 5000 | tar -xvf - ; done
|
||
```
|
||
|
||
###### Simple HTTP Server
|
||
|
||
> Restarts web server after each request - remove `while` condition for only single connection.
|
||
|
||
```bash
|
||
cat > index.html << __EOF__
|
||
<!doctype html>
|
||
<head>
|
||
<meta charset="utf-8">
|
||
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
|
||
<title></title>
|
||
<meta name="description" content="">
|
||
<meta name="viewport" content="width=device-width, initial-scale=1">
|
||
</head>
|
||
<body>
|
||
|
||
<p>
|
||
|
||
Hello! It's a site.
|
||
|
||
</p>
|
||
|
||
</body>
|
||
</html>
|
||
__EOF__
|
||
```
|
||
|
||
```bash
|
||
server> while : ; do \
|
||
(echo -ne "HTTP/1.1 200 OK\r\nContent-Length: $(wc -c <index.html)\r\n\r\n" ; cat index.html;) \
|
||
| nc -l -p 5000 \
|
||
; done
|
||
```
|
||
|
||
* `-p` - port number
|
||
|
||
###### Simple HTTP Proxy (single connection)
|
||
|
||
```bash
|
||
#!/usr/bin/env bash
|
||
|
||
if [[ $# != 2 ]] ; then
|
||
printf "%s\\n" \
|
||
"usage: ./nc-proxy listen-port bk_host:bk_port"
|
||
fi
|
||
|
||
_listen_port="$1"
|
||
_bk_host=$(echo "$2" | cut -d ":" -f1)
|
||
_bk_port=$(echo "$2" | cut -d ":" -f2)
|
||
|
||
printf " lport: %s\\nbk_host: %s\\nbk_port: %s\\n\\n" \
|
||
"$_listen_port" "$_bk_host" "$_bk_port"
|
||
|
||
_tmp=$(mktemp -d)
|
||
_back="$_tmp/pipe.back"
|
||
_sent="$_tmp/pipe.sent"
|
||
_recv="$_tmp/pipe.recv"
|
||
|
||
trap 'rm -rf "$_tmp"' EXIT
|
||
|
||
mkfifo -m 0600 "$_back" "$_sent" "$_recv"
|
||
|
||
sed "s/^/=> /" <"$_sent" &
|
||
sed "s/^/<= /" <"$_recv" &
|
||
nc -l -p "$_listen_port" <"$_back" \
|
||
| tee "$_sent" \
|
||
| nc "$_bk_host" "$_bk_port" \
|
||
| tee "$_recv" >"$_back"
|
||
```
|
||
|
||
```bash
|
||
server> chmod +x nc-proxy && ./nc-proxy 8080 192.168.252.10:8000
|
||
lport: 8080
|
||
bk_host: 192.168.252.10
|
||
bk_port: 8000
|
||
|
||
client> http -p h 10.240.30.3:8080
|
||
HTTP/1.1 200 OK
|
||
Accept-Ranges: bytes
|
||
Cache-Control: max-age=31536000
|
||
Content-Length: 2748
|
||
Content-Type: text/html; charset=utf-8
|
||
Date: Sun, 01 Jul 2018 20:12:08 GMT
|
||
Last-Modified: Sun, 01 Apr 2018 21:53:37 GMT
|
||
```
|
||
|
||
###### Create a single-use TCP or UDP proxy
|
||
|
||
```bash
|
||
### TCP -> TCP
|
||
nc -l -p 2000 -c "nc [ip|hostname] 3000"
|
||
|
||
### TCP -> UDP
|
||
nc -l -p 2000 -c "nc -u [ip|hostname] 3000"
|
||
|
||
### UDP -> UDP
|
||
nc -l -u -p 2000 -c "nc -u [ip|hostname] 3000"
|
||
|
||
### UDP -> TCP
|
||
nc -l -u -p 2000 -c "nc [ip|hostname] 3000"
|
||
```
|
||
|
||
___
|
||
|
||
##### Tool: [socat](http://www.dest-unreach.org/socat/doc/socat.html/)
|
||
|
||
###### Testing remote connection to port
|
||
|
||
```bash
|
||
socat - TCP4:10.240.30.3:22
|
||
```
|
||
|
||
* `-` - standard input (STDIO)
|
||
* `TCP4:<params>` - set tcp4 connection with specific params
|
||
* `[hostname|ip]` - set hostname/ip
|
||
* `[1-65535]` - set port number
|
||
|
||
###### Redirecting TCP-traffic to a UNIX domain socket under Linux
|
||
|
||
```bash
|
||
socat TCP-LISTEN:1234,bind=127.0.0.1,reuseaddr,fork,su=nobody,range=127.0.0.0/8 UNIX-CLIENT:/tmp/foo
|
||
```
|
||
|
||
* `TCP-LISTEN:<params>` - set tcp listen with specific params
|
||
* `[1-65535]` - set port number
|
||
* `bind=[hostname|ip]` - set bind hostname/ip
|
||
* `reuseaddr` - allows other sockets to bind to an address
|
||
* `fork` - keeps the parent process attempting to produce more connections
|
||
* `su=nobody` - set user
|
||
* `range=[ip-range]` - ip range
|
||
* `UNIX-CLIENT:<params>` - communicates with the specified peer socket
|
||
* `filename` - define socket
|
||
|
||
___
|
||
|
||
##### Tool: [lsof](https://en.wikipedia.org/wiki/Lsof)
|
||
|
||
###### Show process that use internet connection at the moment
|
||
|
||
```bash
|
||
lsof -P -i -n
|
||
```
|
||
|
||
###### Show process that use specific port number
|
||
|
||
```bash
|
||
lsof -i tcp:443
|
||
```
|
||
|
||
###### Lists all listening ports together with the PID of the associated process
|
||
|
||
```bash
|
||
lsof -Pan -i tcp -i udp
|
||
```
|
||
|
||
###### List all open ports and their owning executables
|
||
|
||
```bash
|
||
lsof -i -P | grep -i "listen"
|
||
```
|
||
|
||
###### Show open ports
|
||
|
||
```bash
|
||
lsof -Pni4 | grep LISTEN | column -t
|
||
```
|
||
|
||
###### List all files opened by a particular command
|
||
|
||
```bash
|
||
lsof -c "process"
|
||
```
|
||
|
||
###### View user activity per directory
|
||
|
||
```bash
|
||
lsof -u username -a +D /etc
|
||
```
|
||
___
|
||
|
||
**Tool: [netstat](https://en.wikipedia.org/wiki/Netstat)**
|
||
|
||
###### Graph # of connections for each hosts
|
||
|
||
```bash
|
||
netstat -an | grep ESTABLISHED | awk '{print $5}' | awk -F: '{print $1}' | grep -v -e '^[[:space:]]*$' | sort | uniq -c | awk '{ printf("%s\t%s\t",$2,$1) ; for (i = 0; i < $1; i++) {printf("*")}; print "" }'
|
||
```
|
||
|
||
###### Monitor open connections for specific port including listen, count and sort it per IP
|
||
|
||
```bash
|
||
watch "netstat -plan | grep :443 | awk {'print \$5'} | cut -d: -f 1 | sort | uniq -c | sort -nk 1"
|
||
```
|
||
|
||
___
|
||
|
||
**Tool: [rsync](https://en.wikipedia.org/wiki/Rsync)**
|
||
|
||
###### Rsync remote data as root using sudo
|
||
|
||
```bash
|
||
rsync --rsync-path 'sudo rsync' username@hostname:/path/to/dir/ /local/
|
||
```
|
||
|
||
<a name="programming"><b>Programming</b></a>
|
||
|
||
##### Tool: [awk](http://www.grymoire.com/Unix/Awk.html)
|
||
|
||
###### Remove duplicate entries in a file without sorting
|
||
|
||
```bash
|
||
awk '!x[$0]++' filename
|
||
```
|
||
|
||
###### Exclude multiple columns using AWK
|
||
|
||
```bash
|
||
awk '{$1=$3=""}1' filename
|
||
```
|
||
|
||
___
|
||
|
||
##### Tool: [sed](http://www.grymoire.com/Unix/Sed.html)
|
||
|
||
###### To print a specific line from a file
|
||
|
||
```bash
|
||
sed -n 10p /path/to/file
|
||
```
|
||
|
||
###### Remove a specific line from a file
|
||
|
||
```bash
|
||
sed -i 10d /path/to/file
|
||
```
|
||
|
||
###### Remove a range of lines from a file
|
||
|
||
```bash
|
||
sed -i <file> -re '<start>,<end>d'
|
||
```
|
||
|
||
___
|
||
|
||
##### Tool: [grep](http://www.grymoire.com/Unix/Grep.html)
|
||
|
||
###### Search for a "pattern" inside all files in the current directory
|
||
|
||
```bash
|
||
grep -RnisI "pattern" *
|
||
fgrep "pattern" * -R
|
||
```
|
||
|
||
###### Remove blank lines from a file and save output to new file
|
||
|
||
```bash
|
||
grep . filename > newfilename
|
||
```
|
||
|
||
###### Except multiple patterns
|
||
|
||
```bash
|
||
grep -vE '(error|critical|warning)' filename
|
||
```
|
||
|
||
###### Show data from file without comments
|
||
|
||
```bash
|
||
grep -v ^[[:space:]]*# filename
|
||
```
|
||
|
||
###### Show data from file without comments and new lines
|
||
|
||
```bash
|
||
egrep -v '#|^$' filename
|
||
```
|