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Jeff777's avatar
Jeff777
Bronze II
3 months ago

Radare2 Reverse Engineering: Ep.2 – Windows Binary Part 2; Final Question

I have managed to find the answer to Questions 1-4 of this lab, however I can't seem to identify the answer to the final question (Question 5 - What is the token?). I have run the binary and I get the “You have not met the requirements” message. I understand that there is an some type of execution error within the binary that I must correct for it to work properly however I have not been able to locate the error in order to analyze it and attempt to correct it. Any insight or guidance on what I'm missing / doing incorrectly would be greatly appreciated. Thanks in advance.

I am not getting a prompt to provide the password.

I am not seeing the prompt to use the calculator to find the answer to the calculation that is presented.

I can see that there is a reference to a token.txt file but I can’t seem to get access to the file to determine what the token value is. 

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2 Replies

  • netcat's avatar
    netcat
    Icon for Advocate rankAdvocate
    21 days ago

    There's no error in the binary. It's just...you didn't meet the requirement (to enter the password and get the token) yet. British humor.
    Since you have the screenshots of the code attached already: Look at them and learn (or just guess) how to invoke the most powerful calculator of the world.