MR-ROBOT

Downloading Challenge Files

here is the executable file to download

390KB

MrRobot.rar

in this challenge we have an audio file and a zip file that is protected by a password so we have to find the password from the audio and then unzip the zip file to get the flag

first let's listen to the audio to see whether it's a morse code or DTMF tones that can be decoded, and after listening to it we can know the it's DTMF tones

DTMF tones are the sounds or tones generated by a telephone when the numbers are pressed and each number have a diffrent sound so we can capture the numbers pressed using an online DTMF Tones Decoder

• https://unframework.github.io/dtmf-detect/

the password is => 148641251456

now let's use this passoword to unzip the zip file

now let's open this pdf file, this file looks like doesn't contain anything useful

but when u start selecting text you will notice the flag is written with a white font and this is why it's hidden

Flag

DEFENSYS{PDF5_C4n_H1d3_7hin85}

Greetings from Sayonara