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AES

import base64
from Crypto.Cipher import AES


def aes_decrypt(data, key):
    key = key.encode('utf-8') + b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
    print(key)
    cipher = AES.new(key, AES.MODE_ECB)
    decrypted = cipher.decrypt(base64.b64decode(data))
    return decrypted


if __name__ == "__main__":
    data = 'Kln/qZwlOsux+b/Gv0WsxkOec5E70dNhvczSLFs+0pkHaovEOBqUApBGBDBUrH08'
    for i in range(100000, 999999):
        key = str(i)
        res = aes_decrypt(data=data, key=key)
        res = str(res)
        if 'flag' in res or 'DASCTF' in res:
            print(f"key:{key}")
            print(f"falg:{res}")
            break

更新: 2024-11-02 11:18:41
原文: https://www.yuque.com/chaye-apqbl/vsc85q/gmsb4s5ixu9u0tgq