CHALLENGES 2017
!! If you have some write-ups for the challenges, feel free to send it to us via the contact form and we will add it here to our website. !!
Thank you very much for writing some write-ups:
- Stefano Vetrini
- Daniele Linguaglossa
Qualifying Challenges
Every participant needed to solve at least one qualifying challenges. They can be downloaded from here.
Main Event Challenges
One flag per challenge!
Standard Flag-format: AHE17{<FLAG>}
There are also challenges with a different flag format. Please check the Description.
There are also some challenges that can not be solved after the event, they were only available for local hackers.
| Challenge | Difficulty | Description | Write-Up | |||
|---|---|---|---|---|---|---|
| Native | ||||||
| AES-Decrypt | 400 | It’s right in front of you, just decrypt it! | ||||
| Token-Generator | 500 | If you enter a flag in the app it will validate if it is the correct flag. To find the correct flag, which the validator will accept, just reverse the app. Attention: Token format is AHE17-THEFLAG | ||||
| Exploiting | ||||||
| 100 | Only for local hackers during the event. | NONE | ||||
| Communication | ||||||
| 200 | Only for local hackers during the event. | NONE | ||||
| 300 | This challenge includes an app and a server. The token is stored on the server, various hints are hidden in both, app and server. Use HTTP GET requests to find the hints on the server. Only GET requests are required to solve this challenge!Requires a server. |
NONE | ||||
| Hardware | ||||||
| 250 | Only for local hackers during the event. | NONE | ||||
| 150 | Only for local hackers during the event. | NONE | ||||
| Reversing | ||||||
| Flag-Validator | 150 | If you enter a flag in the app it will validate if it is the correct flag. To find the correct flag, which the validator will accept, just reverse the app.
If you find the correct flag, please put the flag for submission into AHE17{THEFLAG} . |
||||
| Crypto | ||||||
| You Can Hide – But You Cannot Run | 250 | Something is going on inside this app, don’t know what its doing. I have the feeling a secret message is transmitted somehow, somewhere… can you help me find the secret message? | ||||
| 150 | Only for local hackers during the event. | NONE | ||||
| Crack-Me | ||||||
| Why Should I Pay? | 200 | This app is useluss without premium, but why would you pay for something if you can get it for free? | ||||
| Misc | ||||||
| Esoteric | 300 | So much Brainfuck… seems like there is more than you see! Please take a look at me! | ||||
| 250 | Only for local hackers during the event. | NONE | ||||