Importing images from Posts

I understand how to import a featured image from a post, but is it also possible to automatically import other images (img tags) found in the post? My use case is that I\\\’m trying to migrate from HubSpot to WordPress. All images (featured or otherwise) are stored in HubSpot and will need to be ported over. Ideallyl, it would import the image into the WordPress media and then update the img src to point to this new URL. Maybe that\\\’s asking too much, though. Thank you in advance.