security tool
LinEnum - Scripted Local Linux Enumeration & Privilege Escalation Checks
Umut
August 11, 2017
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General usage:
version 0.6
- Example: ./LinEnum.sh -k keyword -r report -e /tmp/ -t
OPTIONS:
- -k Enter keyword
- -e Enter export location
- -t Include thorough (lengthy) tests
- -r Enter report name
- -h Displays this help text
Running with no options = limited scans/no output file
- -e Requires the user enters an output location i.e. /tmp/export. If this location does not exist, it will be created.
- -r Requires the user to enter a report name. The report (.txt file) will be saved to the current working directory.
- -t Performs thorough (slow) tests. Without this switch default 'quick' scans are performed.
- -k An optional switch for which the user can search for a single keyword within many files (documented below).
High-level summary of the checks/tasks performed by LinEnum:
- Kernel and distribution release details
- System Information:
- Hostname
- Networking details:
- Current IP
- Default route details
- DNS server information
- User Information:
- Current user details
- Last logged on users
- Shows users logged onto the host
- List all users including uid/gid information
- List root accounts
- Extracts password policies and hash storage method information
- Checks umask value
- Checks if password hashes are stored in /etc/passwd
- Extract full details for ‘default’ uid’s such as 0, 1000, 1001 etc
- Attempt to read restricted files i.e. /etc/shadow
- List current users history files (i.e .bash_history, .nano_history etc.)
- Basic SSH checks
- Privileged access:
- Determine if /etc/sudoers is accessible
- Determine if the current user has Sudo access without a password
- Are known ‘good’ breakout binaries available via Sudo (i.e. nmap, vim etc.)
- Is root’s home directory accessible
- List permissions for /home/
- Environmental:
- Display current $PATH
- Displays env information
- Jobs/Tasks:
- List all cron jobs
- Locate all world-writable cron jobs
- Locate cron jobs owned by other users of the system
- Services:
- List network connections (TCP & UDP)
- List running processes
- Lookup and list process binaries and associated permissions
- List inetd.conf/xined.conf contents and associated binary file permissions
- List init.d binary permissions
- Version Information (of the following):
- Sudo
- MYSQL
- Postgres
- Apache
- Checks user config
- Shows enabled modules
- Default/Weak Credentials:
- Checks for default/weak Postgres accounts
- Checks for default/weak MYSQL accounts
- Searches:
- Locate all SUID/GUID files
- Locate all world-writable SUID/GUID files
- Locate all SUID/GUID files owned by root
- Locate ‘interesting’ SUID/GUID files (i.e. nmap, vim etc)
- List all world-writable files
- Find/list all accessible *.plan files and display contents
- Find/list all accessible *.rhosts files and display contents
- Show NFS server details
- Locate *.conf and *.log files containing keyword supplied at script runtime
- List all *.conf files located in /etc
- Locate mail
- Platform/software specific tests:
- Checks to determine if we're in a Docker container
- Checks to see if the host has Docker installed
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