If you’re trying to find the original Xmasti 2021 collection, be cautious. Like many free content aggregators, Xmasti has been known to carry pop-up ads and external redirects. Follow these tips:
If given a ciphertext and hint “XOR with key ‘XMAS’”, script: xmasti 2021
cipher = bytes.fromhex("...")
key = b"XMAS"
flag = bytes([c ^ key[i % len(key)] for i, c in enumerate(cipher)])
print(flag)
Feeling nostalgic? You can still channel the Xmasti 2021 energy for your next holiday party: If you’re trying to find the original Xmasti
Just reply with the specific challenge name(s), and I’ll write the full detailed walkthrough for you. Feeling nostalgic