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Checklist - Linux Privilege Escalation
Checklist for privilege escalation in Linux
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If you want to know about my latest modifications/additions or you have any suggestion for HackTricks or PEASS, join the πŸ’¬β€‹telegram group, or follow me on Twitter πŸ¦β€‹@carlospolopm. If you want to share some tricks with the community you can also submit pull requests to https://github.com/carlospolop/hacktricks that will be reflected in this book and don't forget to give ⭐ on github to motivate me to continue developing this book.

Best tool to look for Linux local privilege escalation vectors: LinPEAS​

​System Information​

​Drives​

    List mounted drives
    Any unmounted drive?
    Any creds in fstab?

​Installed Software​

​Processes​

    Is any unknown software running?
    Is any software with more privileges that it should have running?
    Search for exploits for running processes (specially if running of versions)
    Can you modify the binary of any running process?
    Monitor processes and check if any interesting process is running frequently
    Can you read some interesting process memory (where passwords could be saved)?

​Services​

    Any writable .service file?
    Any writable binary executed by a service?
    Any writable folder in systemd PATH?

​Timers​

    Any writable timer?

​Sockets​

    Any writable .socket file?
    Can you communicate with any socket?
    HTTP sockets with interesting info?

​D-Bus​

    Can you communicate with any D-Bus?

​Network​

    Enumerate the network to know where you are
    Open ports you couldn't access before getting a shell inside the machine?
    Can you sniff traffic using tcpdump?

​Users​

    Generic users/groups enumeration
    Do you have a very big UID? Is the machine vulnerable?
    Clipboard data?
    Password Policy?
    Try to use every known password that you have discovered previously to login with each possible user. Try to login also without password.

​Writable PATH​

    If you have write privileges over some folder in PATH you may be able to escalate privileges

​Capabilities​

    Has any binary any unexpected capability?

​ACLs​

    Has any file any unexpected ACL?
    screen?
    tmux?

​SSH​

​Interesting Files​

    Profile files - Read sensitive data? Write to privesc?
    passwd/shadow files - Read sensitive data? Write to privesc?
    Check commonly interesting folders for sensitive data
    Weird Localtion/Owned files, you may have access or alter executable files
    Modified in last mins
    Sqlite DB files
    Hidden files
    Script/Binaries in PATH
    Web files (passwords?)
    Backups?
    Known files that contains passwords: Use Linpeas and LaZagne
    Generic search

​Writable Files​

    Modify python library to execute arbitrary commands?
    Can you modify log files? Logtotten exploit
    Can you modify /etc/sysconfig/network-scripts/? Centos/Redhat exploit

​Other tricks​

If you want to know about my latest modifications/additions or you have any suggestion for HackTricks or PEASS, join the πŸ’¬ PEASS & HackTricks telegram group here, or follow me on Twitter πŸ¦β€‹@carlospolopm. If you want to share some tricks with the community you can also submit pull requests to https://github.com/carlospolop/hacktricks that will be reflected in this book. Don't forget to give ⭐ on the github to motivate me to continue developing this book.
Last modified 4mo ago