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Easy challenges

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0 / 10 challenges completed

  • A wild vorlon appears

    Opens on 12-03-2025 14:00
    Ends on 30-04-2025 23:59

    Completed by 45 users

    You are running a space station. An alien hands you a picture of a cat. Can you figure out what he is trying to say?

  • Password checker

    Opens on 12-03-2025 14:20
    Ends on 30-04-2025 23:59

    Completed by 43 users

    Your doctor has forgotten his password to the medlab. The password is stored in a proprietary software. Can you help him out?

  • Psi Corps

    Opens on 12-03-2025 14:40
    Ends on 30-04-2025 23:59

    Completed by 38 users

    You have lost your key to the Psi Corps software, and your supervisor, Alfred, is refusing to help to you. He says that you should try to figure out what your key was. You can use his key validation service that is available here.

  • Morden's DMs

    Opens on 12-03-2025 15:00
    Ends on 30-04-2025 23:59

    Completed by 35 users

    Mr. Morden sends a message to his associates using XOR and a one-time pad. You find out that the plain text message 'shadow' encrypted is [23, 29, 12, 30, 7, 22]. Mr. Morden being not the shapest pike in the shed sends a new message [13, 22, 89, 8, 29, 18] and reuses the pad. Decrypt the message.

  • Ivanova's secret

    Opens on 12-03-2025 15:20
    Ends on 30-04-2025 23:59

    Completed by 31 users

    Ivanova has chosen her RSA modulus n=899, and a public key e=11. She receives a cipher 20 that has been encrypted with her public key. What is the plaintext?

  • Blast from the past

    Opens on 12-03-2025 15:40
    Ends on 30-04-2025 23:59

    Completed by 37 users

    You detain an alien that speaks gibberish. Can you decipher what he is saying: Ewctlv'b bits. Kiv'b bits. Vwb bpm Wvm. Bpmg bwtl um, bpmg lql bpib bpm xiaaewzl qa Hibpzia.

  • Logs logs logs

    Opens on 12-03-2025 16:00
    Ends on 30-04-2025 23:59

    Completed by 34 users

    Garibaldi maintains a website to keep tabs on all the smugglers. He asks you to find any leaks in his web site the. You noticed that he wrote ...< form > < input type=text name=pwd >... So to prove a point you started searching the logs.

  • Centauri Bank I

    Opens on 12-03-2025 16:20
    Ends on 30-04-2025 23:59

    Completed by 23 users

    Your boss, Londo, decided to open a bank. You decide to check it's security. Rumour has it they had some issues with negative transfers but they patched it in the frontend.

  • Centauri Bank II

    Opens on 12-03-2025 16:40
    Ends on 30-04-2025 23:59

    Completed by 30 users

    Mollari Bank does some curious AJAX calls. Can you find the key?

  • Zack's salary

    Opens on 12-03-2025 17:00
    Ends on 30-04-2025 23:59

    Completed by 25 users

    Zack needs his salary. Normally, Garibaldi would be doing this but he is missing. Luckily, Garibaldi kept a database of security expenses.

Medium challenges

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0 / 10 challenges completed

  • Bester's malcontent

    Opens on 13-03-2025 14:00
    Ends on 30-04-2025 23:59

    Completed by 25 users

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  • Cole

    Opens on 13-03-2025 14:20
    Ends on 30-04-2025 23:59

    Completed by 25 users

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  • Number game

    Opens on 13-03-2025 14:40
    Ends on 30-04-2025 23:59

    Completed by 26 users

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  • Based talk

    Opens on 13-03-2025 15:00
    Ends on 30-04-2025 23:59

    Completed by 25 users

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  • Marcus message

    Opens on 13-03-2025 15:20
    Ends on 30-04-2025 23:59

    Completed by 21 users

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  • Password

    Opens on 13-03-2025 15:40
    Ends on 30-04-2025 23:59

    Completed by 29 users

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  • Secret meeting

    Opens on 13-03-2025 16:00
    Ends on 30-04-2025 23:59

    Completed by 25 users

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  • Information costs money

    Opens on 13-03-2025 16:20
    Ends on 30-04-2025 23:59

    Completed by 15 users

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  • Caught in the middle

    Opens on 13-03-2025 16:40
    Ends on 30-04-2025 23:59

    Completed by 20 users

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  • HR

    Opens on 13-03-2025 17:00
    Ends on 30-04-2025 23:59

    Completed by 18 users

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Hard challenges

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0 / 3 challenges completed

  • Fan club

    Opens on 14-03-2025 14:00
    Ends on 30-04-2025 23:59

    Completed by 2 users

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  • A wild fox appears

    Opens on 14-03-2025 14:20
    Ends on 30-04-2025 23:59

    Completed by 11 users

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  • Bureau

    Opens on 14-03-2025 14:40
    Ends on 30-04-2025 23:59

    Completed by 5 users

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