SecurityXploded Blog

F-Secure RE Challenge Conquered

F-Secure has announced new Reverse Engineering Challenge for the summer assembly event. The challenge is very interesting and neither easy nor difficult. It has 3 levels, at each level you have to find out email address which will take you to the next level.

The challenge was announced a day back and already 18 people including me have completed it. Though I could not make up to top 3 spot, I am happy that I have completed the challenge in between busy office schedule…

Once the challenge is over, I will post the answers here.

—- Update : 14th August 2007 —-

Since the website is offline and automated email system is not working anymore, its difficult to know if the answer is correct or not. Here are the final email addresses for different levels of challenge

Level 1
Level 2
Level 3

You can find complete solution with detailed analysis at zairon’s blog…


You can find the current stats and details of the challenge here

So give it a try and see where do you stand….!

– Nagareshwar




  1. August 13, 2007    

    hi & Congratulations on solving 😀
    i’ll be looking forward for you answers to the challenge.

  2. August 13, 2007    

    Thanks azmo..I will post the answers soon, just did not want to spoil the fun for others.
    By the way I found your blog interesting as well…

    Have a great day

  3. OJ OJ
    August 14, 2007    

    Unfortunately someone else has already posted the solution to the F-Secure challenge, and hence the challenge will be flooded with bogus solutions from people who don’t know what they’re doing. What a shame.

    The challenge was a lot of fun though wasn’t it 😉

    Nice site!

  4. August 14, 2007    

    It was indeed. However now it does not matter as automated email system is taken off. That’s why F-Secure have posted all the binaries on the net directly. Now it will help the others to verify if their solution is correct or wrong…


  5. August 14, 2007    

    The website is still down and i didn’t download the challenge, if any one has a working link that would be great, just to have a look.

    OJ my friend, its nice to see you here 😀

  6. August 14, 2007    

    hi again, i found a mirror to download the challenge,

  7. August 14, 2007    

    Since the challenge is over, they have taken down the server and also automated email system won’t work. So you need to verify the answers with some one who has already finished.

    I think its time to post the answers…

  8. August 14, 2007    

    Well…a geek named Zairon has already posted the complete solution along with steps required to solve all the levels…..You can find it here

  9. OJ OJ
    September 12, 2007    

    Hey Azmo, I followed the link from your blog 🙂

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