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User enumeration

Register In /user/register just try to create a username and if the name is already taken it will be notified: The name admin is already taken.

Request new password If you request a new password for an existing username: Unable to send e-mail. Contact the site administrator if the problem persists.

If you request a new password for a non-existent username: Sorry, loremipsum is not recognized as a user name or an e-mail address

Number of users enumeration

Accessing /user/<number> you can see the number of existing users, in this case is 2 as /users/3 returns a not found error:

Hidden pages enumeration

Fuzz /node/$ where $ is a number (from 1 to 500 for example). You could find hidden pages (test, dev) which are not referenced by the search engines.

Installed modules info

#Get info on installed modules

# Download content from files exposed in the previous step

Code execution inside Drupal with admin creds

You need the plugin php to be installed (check it accessing to /modules/php and if it returns a 403 then, exists, if not found, then the plugin php isn't installed) Go to Modules -> (Check) PHP Filter -> Save configuration

Post Exploitation

Read settings.php

find / -name settings.php -exec grep "drupal_hash_salt\|'database'\|'username'\|'password'\|'host'\|'port'\|'driver'\|'prefix'" {} \; 2>/dev/null

Dump users from DB

mysql -u drupaluser --password='2r9u8hu23t532erew' -e 'use drupal; select * from users'