Default Paths
/core/install.php
/core/update.php
/core/INSTALL.mysql.txt
/core/INSTALL.pgsql.txt
/core/INSTALL.sqlite.txt
/core/MAINTAINERS.txt
/core/CHANGELOG.txt
/core/INSTALL.txt
/core/UPDATE.txt
Login Page
/user
/user/login
Register Page
/user/register
Page Enumeration
/node/<number>
Module Enumeration
/modules/<plugin_name>
Other Potential Directories
These paths may help identify if the application you are testing is a Drupal or not in case all the other endpoints above fail:
/presscentre/update.php
/presscentre/install.php
/presscentre/modules/color/preview.html
/presscentre/themes/bartik/color/preview.html
/presscentre/modules/simpletest/files/html-2.html
Potential Source code disclosure
Read more about transliteration_data.php.txt as it could be useful information if this thing is used on the application!
/core/scripts/transliteration_data.php.txt