Credentials may be found in configuration files (
.xml, etc.), shell scripts, a user's bash history file, backup (
.bak) files, within database files or even in text files.
The /var directory typically contains the web root for whatever web server is running on the host.
xyz_student@NIX02:~$ cat wp-config.php | grep 'DB_USER\|DB_PASSWORD' define( 'DB_USER', 'wordpressuser' ); define( 'DB_PASSWORD', 'WPadmin123!' );
The spool or mail directories, if accessible, may also contain valuable information or even credentials. It is common to find credentials stored in files in the web root (i.e. MySQL connection strings, WordPress configuration files).
xyz_student@NIX02:~$ find / ! -path "*/proc/*" -iname "*config*" -type f 2>/dev/null /etc/ssh/ssh_config /etc/ssh/sshd_config /etc/python3/debian_config /etc/kbd/config /etc/manpath.config /boot/config-4.4.0-116-generic /boot/grub/i386-pc/configfile.mod /sys/devices/pci0000:00/0000:00:00.0/config /sys/devices/pci0000:00/0000:00:01.0/config <SNIP>
Whenever finding SSH keys check the
known_hosts file to find targets. This file contains a list of public keys for all the hosts which the user has connected to in the past and may be useful for lateral movement or to find data on a remote host that can be used to perform privilege escalation on our target.
xyz_student@NIX02:~$ ls ~/.ssh id_rsa id_rsa.pub known_hosts