u/pm_me_your_jubblies

I have a small pin hole leak on the sewer line(circled in red) would this be a simple enough fix for me to do by myself? Ideally I would like to replace everything circled in blue with pvc. I am pretty handy with most of my stuff but I'm not too sure how to tackle this or how difficult it would be because of the connection through the foundation wall. Thank you in advance.