Cheatsheets that I’ve found useful over the course of my career:

• SANS---metasploit cheat sheet
• g0tmi1k---priv esc
• highon coffee---enumeration
• highon coffee---nmap
• highon coffee---reverse shell
• highon coffee---ssh and meterpreter pivoting
• highon coffee---linux commands
• highon coffee---enum4linux
• Kali---SMBMap
• metalkey---shellshock via curl
• offensive security---meterpreter pivoting
• offensive security---proxychains w/ meterpreter
• Upgrading Reverse Shells
• VI Cheat Sheet
• John The Ripper Cheat Sheet
• Linux---Find Files
• FCrackZIP---zip cracking
• Windows Priv Esc
• MySQL Cheat Sheet
• Stego Cheat Sheet
• Payatu Priv-Esc
• LaTeX Command Execution
• Breaking rBash
• OSCP Guide (Windows Priv-Esc)
• Linux Kernel Exploit List
• User Agent List (Get robots.txt)
• W3Schools JS Browser Info---Useful XSS
• Default Credentials---Cheat Sheet