Show Information from several SharePoint in a single Report

Hello,

i need to show some SharePoint-Informations in a Single SSRS-Report.

I´ve got an entry-Point:

http://sharepoint/entry  (The report will be placed here)

Under the entry-point, there are several subsites with a cloned list (MyListEntries)

- http://sharepoint/entry/information/A

- http://sharepoint/entry/information/B

- http://sharepoint/entry/information/C

I need to show the merged content from all "MyListEntries"-Lists i a single report.

Is this possible without using 3rd-party tools?

kind regards,
Kai