justCTF 2021

Here are some challenges from justCTF 2021, not alot because I suck 😐

The interface was so nice looking, I had only done the Sanity check when I took this screenshot I got more after.

I did some others but I can’t remember them 😕

PDF Challenge - Easy

You get pdf the appears empty:

Using binwalk to extract files:

(Actually used foremost 🙂)

You get this false_flag file, and mutool elf file:

Following the command in the false flag file:

You get this, and a hint about things not matching what the file command says they are.

Find the file B5FC8 which is full of hex:

Looking up the file signature you can see it is actually an image:

Convert it from hex to binary to create the image:

xxd -r -p B5FC8 test_out.jpeg

You get the flag:

MyLittlePwny - Easy

This one was easy, it uses ponysay a version of cowsay

All you had to do was use the ` quotations to execute a command before the data is shown by ponysay

It doesn’t let you use cat, but using sort also works