I've updated my previous books downloader scripts with adding images support.
Now they are located in github repo
https://github.com/onesixromcom/books-downloader
One of the other important update is the implementation of downloading books for logged in users. Since, not all books are free on booknet.ua website the user should log-in to pay and then read full book version. After some digging in the code I've found that the only thing website check if used is logged in is "_identity" cookie. So it was easy to copy it from the browser, paste in a special file and use it in CURL requests.
Please, use this script only for education. Piracy is prohibited.
Support authors - buy their books!