Powerpoint Programming Writeup (dCTF 2021)

panda1729

Type: Misc

Difficulty: Medium

Prompt:

Solution

In this challenge we are given a Powerpoint file. It is a .ppsx file and double clicking it directly opens the file in presentation mode.

First open the file from Powerpoint and analyse the objects. While playing with the keys showed that there are transparent shapes on some keys. After tweaking a little more I realised that the whole password thing is controlled by animations.

I opened the animations pane and went through the sequence of objects. Clicking on the object in animations pane will highlight that object on slide.

I noted the characters manually and it was the flag.

DCTF{PPT_1SNT_V3RY_S3CUR3_1S_1T}