ALPHASE

Aku ingin menjadi cukup kuat. Kemarin aku telah menjadi kuat, tetapi itu tidak cukup.

picoCTf - Binary Search


  • URL: https://play.picoctf.org/practice/challenge/442

  • Title: Binary Search

  • Tags: Easy, General Skills, picoCTF 2024, shell, browser_webshell_solvable, ls

  • Author: Jeffery John

  • Started: 9 July 2025

  • Solved: 9 July 2025

  • Description: Want to play a game? As you use more of the shell, you might be interested in how they work! Binary search is a classic algorithm used to quickly find an item in a sorted list. Can you find the flag? You’ll have 1000 possibilities and only 10 guesses. Cyber security often has a huge amount of data to look through - from logs, vulnerability reports, and forensics. Practicing the fundamentals manually might help you in the future when you have to write your own tools! You can download the challenge files here:

    …
Read more ⟶

picoCTF - Vigenere


  • URL: https://play.picoctf.org/practice/challenge/316
  • Title: Vigenere
  • Tags: Medium, Cryptography, picoCTF 2022
  • Author: Mubarak Mikail
  • Started: 21 July 2025
  • Solved: 21 July 2025
  • Description: Can you decrypt this message? Decrypt this message using this key “CYLAB”.

The text file contains

rgnoDVD{O0NU_WQ3_G1G3O3T3_A1AH3S_f85729e7}

The method is the same as easy1

alt text

picoCTF{D0NT_US3_V1G3N3R3_C1PH3R_d85729g7}

…
Read more ⟶