Whenever we talk about how to find authentication vulnerabilities, first we should look at what is the meaning of authentication? Authentication is the process of verifying the identity of a given user or client. In other words, it involves making sure that they really are who they claim to be.

Challenge Category: OSINT Challenge: The author is running his own tech blog and is hiding a weird thing on its source. (Hey player, do you like copy-pasting things and throwing your waste in the bin?). Author: cybersapien

Challenge Category: OSINT Challenge: The author is a professional person and has a medium to run his own blog. He likes the white colour the most. Can you spot the flag? Author: cybersapien

To promote the upcoming Winja CTF 2021 competition which is to be held during Nullcon 2021, Winja released its 1st online quiz challenge on 19 Dec on its Twitter handle as part of its promotional events. Participants were expected to understand the regular expressions and choose the most appropriate answer.

The name of the Virtual machine is “Acid Server” that we are going to solve today. It is a Boot2Root VM. This is a web-based VM.