In the shells & payloads module, "The live Engagement" in the hint section it is stated that: "Attempt to complete the challenges on your own. If you get stuck then view the helpful hints below and next to each challenge question:" However, the hints contain credentials that are needed to solve the lab and are not default credentials (because in the scenario they have been acquired during recon) Therefore, it is not possible to solve them without using the hints and the text is misleading as there is no way to (except bruteforcing) to obtain these credentials.