Can you get the flag? Reverse engineer this binary.
Category: Reverse Engineering
To solve this challenge, I used
ghidra, a popular tool for reverse-engineering.
I opened up a new project, imported the provided executable, and started looking for the main function.
Of particular interest is this:
The program asks you for a number, and if you input the correct number, it will return the flag. The number in question is “0x86187”, which is hexadecimal for “549255”, you can either convert the hex value to decimal in your converter of choice or more conveniently, hover over the value in
ghidra, which will convert it for you!