Linux file read

Linux/x86 File Reader Shellcode https://packetstormsecurity.com/files/141698/linuxx86filereader-shellcode.txt

Create File Shellcode

CreateFile Shellcode https://packetstormsecurity.com/files/141707/createfile-shellcode.c

Directory search shellcode

Windows x86 Executable Directory Search Shellcode

https://packetstormsecurity.com/files/141333/win86execdirsearch-shellcode.txt

Random Linux Shellcode

Linux x86_64 Random Listener Shellcode https://packetstormsecurity.com/files/141332/linuxrandom-shellcode.txt

Explain 'getsystem'

https://blog.cobaltstrike.com/2014/04/02/what-happens-when-i-type-getsystem/

https://www.offensive-security.com/metasploit-unleashed/privilege-escalation/

http://carnal0wnage.attackresearch.com/2010/01/metasploit-getsystem-command.html?m=1

http://www.khromozome.com/windows-privilege-escalation-bypassuac/

https://www.redspin.com/it-security-blog/2010/02/getsystem-privilege-escalation-via-metasploit/