Magic Bytes & Security: When file categorisation goes wrong [Capture The Flag Fundamentals]

When presented with an unknown data blob, what process is followed for an application to determine that files type? What are the security concerns associated with this process?

In this video we are going to explore how data blobs are classified as files and some common Capture The Flag (CTF) and penetration testing tricks related to this classification process across Extension, Media type, Structure and Magic bytes.

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[CTF]

💣💣💣 Guarantee it's impossible to have too many explosions in a security video 💣💣💣

[maxrinehart]

Thank you so much dude, keep up the good work.

[zerosploit]

Wow i did this a different way im going to try it this way now thanks again mate

[joyboy]

Some day, this channel and the website will be huge

[yashgupta]

So the most secure way is to use magic bytes?

[harrywang]

I am too stupid to separate the jokes from the useful stuff. Too much going before my eyes. :(