picoCTF 2019 Lets Warm Up Writeup

Lets Warm Up is a General Skills challenge worth 50 points.

Description

If I told you a word started with 0x70 in hexadecimal, what would it start with in ASCII?

Solving

I solved this by referring to the ascii manual page, which provides a handy chart of ASCII characters and their associated octal, decimal, and hexadecimal representations.

You can view this chart by typing man 7 ascii in your terminal.

As you can see, 0x70 is ‘p’. Encompassing this in picoCTF{} yielded the correct flag.

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