Jules Lewis

This is a walkthrough of an OSINT CTF set by The Seint in a GitHub repo you can find  here . So far, each subsequent step is nested inside a zip archive that is unlocked by solving the previous step. Each layer is password protected, the password being an MD5 hash of the previous stage's answer. You can see how we solved steps 1 to 3 in these earlier posts: Part 1 , Part 2 . WARNING   Obviously there are spoilers in this series; they are a walkthrough after all! STEP 4 - A Visit to Japan Opening step4.zip , we find two text files and the .zip for the next stage: - step4.txt - step4 - hint.txt - step5.zip As before, we'll try getting through this without a hint. Opening step4.txt , we find our clue: --- There is a housing estate somewhere in Japan with the same name as the first five letters of the resort in Hawaii from the previous task. Next to it, there is a dental clinic. The working hours have changed over the past years. What were the clinic’s afternoon working hours in t