Solutions for these challenges using open-source tool PETEP can be found in this written tutorial and in the following video.
There is also the following YouTube playlist with separated videos for each vulnerability:
VuCSA executables for Windows, Linux and Mac can be downloaded from GitHub releases:
GitHub: VuCSA GitHub
VuCSA is licenced under the GNU General Public License v3.0 and its source code is awailable on the GitHub above.