The wp-content folder contains all user-uploaded data and is again divided into three sub-folders:

• themes
• plugins
• uploads

The themes directory contains all of the themes that are installed on our WordPress website. By default, WordPress comes with two themes: Twenty Twelve and Twenty Thirteen.

Similarly, the plugins folder is used to store all of the plugins installed on our WordPress website. All of the images (and other media files) that we've uploaded since the time we launched our website will be stored in the uploads directory. These are categorized by day, month, and year.

Now that you have a basic understanding of the architecture and the file/directory structure in WordPress, let's start pen-testing.