Author:
Nox

Language:
C/C++

Upload:
2024-10-21 13:19

Download

Platform:
Mac OS X

Difficulty:
2.7

Quality:
4.0

Arch:
x86-64

Downloads:
11

Writeups:
0

Comments:
6

Description

4 points for cracking 10 points for a serial 20 points for a keygen

• Comments (6)
• Writeups (0)

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Natjam on 2024-12-15 00:03: Thanks for the macOS crackmes, they are really needed, keep going!

Natjam on 2024-12-15 13:11: Serial for name: natjamxd is KRACK-2368128FBC

Matimuu on 2024-12-25 02:37: Nice puzzle matimuu KRACK-8F592EFFBC

lylythechosenone on 2025-02-06 04:28: The Objective-C almost killed me. Nice challenge.

Coder_90 on 2025-10-12 11:55: For name = “Coder” MD5("Coder") (UTF-8, uppercase hex) = 14C0F98E06BCD735D89C0C6A57488CCD First 7 hex chars = 14C0F98 Therefore, any valid serial for “Coder” must be: FBC KRACK-14C0F98FBC :)

Coder_90 on 2025-10-12 12:26: import hashlib import string def md5_hex_upper(s: str) - str: return hashlib.md5(s.encode("utf-8")).hexdigest().upper() def build_serial(name: str, prefix6: str) - str: if len(prefix6) != 6 or any(ch not in string.printable[:-6] for ch in prefix6): raise ValueError("prefix6 must be exactly 6 printable ASCII chars") mid7 = md5_hex_upper(name)[:7] return prefix6 + mid7 + "FBC" if __name__ == "__main__": name = input("Enter name: ").strip() prefix = "KRACK-" try: serial = build_serial(name, prefix) print("Your Serial is:", serial) except ValueError as e: print("Error:", e)

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