Hard Live

Is it the Flag? (JAVA)

90 points

330 Solves

Programming

Hard

pedro

Community Rating: 4.62 / 5

Pedro was disappointed because he didn't speak Python well enough to capture some of the flags on CTFLearn. His plan for revenge was to create one in his native language (Java). The flag is a String of 6 alphanumeric characters. Capture it. https://mega.nz/#!SHp1xCAL!I9-Zy4kwu_JY019MiYZ6CzGey8sJ6UvqE-ML2idmkrs

First 10 Solvers

Rank Username
1 miccah
2 rafwild8
3 diana
4 landofleet
5 deathknight033
Rank Username
6 mambl
7 eiji98
8 memms
9 tyler99b
10 hanto

  • DaKeiser

    Protected

    [REDACTED] This comment is only shown to users who have solved this challenge.

    • SunTzu

      I think it is best to start from lowercase. Additionally, when you analyse hashCode function, you may limit bruteforce significantly.

      BTW it's cool challenge in my opinion.

      • DaKeiser

        Protected

        [REDACTED] This comment is only shown to users who have solved this challenge.

        • Caillou

          Did the same way. Bruteforce after reducing the field.

  • huberti

    Protected

    [REDACTED] This comment is only shown to users who have solved this challenge.

    • mrsisterfister

      make sure you read the assignment carefully, the flag consists of alphanumeric characters only :)

  • Noxtal

    Protected

    [REDACTED] This comment is only shown to users who have solved this challenge.

  • myliao2007

    The keypoint is that the hash value of x with x.hashcode() is expectable.

  • chrislinkou

    find out the capital letters first :P great challenge