capture the flag, hacking, Uncategorized

@RealTryHackMe #AdventOfCyber Series: Challenge 20 – What’s The Worst That Can Happen? #TisTheSeasonForHacking

Another day, another challenge…

In this post, we’re starting a new series the Advent of Cyber series that is hosted by TryHackMe. This is the third year of the Advent of Cyber where a challenge is released everyday leading to Christmas. In total there will be 25 challenges. In these challenges, we’re McSkidy an elf trying to save Christmas.

In our twentieth challenge, we’re presented with a scenario where McPayroll is processing bonuses. An elf sends McPayroll a file claiming it’s their new payment information. There’s one problem. McPayroll doesn’t recognize the elf. Uh oh…

The topic explored in this challenge is malware. Malware or malicious software is where there’s hidden code inside of file. Malware can be in executables, files that execute code which usually have the .exe extensions, and Word/Excel documents if macros are enabled, for example. In this challenge there are two commands used to determine if there is malware. The first command file will give us the file type no matter the extension and strings will output printable characters from a file.

Can McSkidy determine if the elves new payment information is really malware? Find out below!

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