Useful links for what we do
PowerShell
Hey, Scripting Guy! Blog
http://blogs.technet.com/b/heyscriptingguy/
Powershell for Pen Testers
https://blogs.sans.org/pen-testing/files/2012/04/PowerShellForPT-export.pdf
The NetSPI Powershell blog
https://blog.netspi.com/tag/powershell/
Extracting Windows Passwords with PowerShell
http://www.auditscripts.com/2014/01/extracting-windows-passwords-powershell/
Coding for Pen Testers
http://index-of.es/Programming/Coding%20For%20Pentester.pdf
Pillage the Village - The PowerShell version
http://www.labofapenetrationtester.com/2015/04/pillage-the-village-powershell-version.html
Python
Python Tools for Pen Testers
http://halitalptekin.tumblr.com/post/30099796541/python-tools-for-penetration-testers
Dan Miessler Blog - https://danielmiessler.com/study/
A tcpdump Tutorial and Primer
https://danielmiessler.com/study/tcpdump/
A DNS Primer
https://danielmiessler.com/study/dns/
An Encoding Primer
https://danielmiessler.com/study/encoding/
The Difference Between a Vulnerability Assessment and a Penetration Test
https://danielmiessler.com/writing/vulnerability_assessment_penetration_test/
An Information Security Metrics Primer
https://danielmiessler.com/study/information-security-metrics/
An NMAP Primer
https://danielmiessler.com/study/nmap/
A grep Tutorial and Primer
https://danielmiessler.com/study/grep/
A Subnetting Primer
https://danielmiessler.com/study/subnetting/
Misc Links
How I got root with Sudo
https://www.securusglobal.com/community/2014/03/17/how-i-got-root-with-sudo/
Basic Linux Privilege Escalation
http://blog.g0tmi1k.com/2011/08/basic-linux-privilege-escalation/
Building a Penetration Testing Lab
http://www.forensicmag.com/articles/2014/10/book-excerpt-checklist-building-penetration-testing-lab?et_cid=4235182&et_rid=454846630&type=cta
Kitsploit - the Hacker's Tools
http://www.kitploit.com/
Pass the Hash
https://www.christophertruncer.com/i-have-the-password-hashes-can-i-pass-them/
NMAP Cheat sheet
https://highon.coffee/blog/nmap-cheat-sheet/
Life of a Pen Tester Useful Tutorials
http://lifeofpentester.blogspot.com/2013/10/table-of-contents-life-of-penetration.html
Training Materials (Vulnerable VMs)
Exploit Exercises
https://exploit-exercises.com/
VulnHub
https://www.vulnhub.com/