找到配置文件位置

SecureCRT配置文件位置.png

找到密码密文

密码密文.png

解密代码

# ! /usr/bin/env python
# -*- coding: utf-8 -*-

from Crypto.Hash import SHA256
from Crypto.Cipher import AES

def Decrypt(Ciphertext : str):
    """
    解密密文并返回相应的明文.
    Args: Ciphertext: 将被解密的十六进制字符串.
    Returns: 纯文本字符串.
    """
    IV = b'\x00' * AES.block_size
    Key = SHA256.new(''.encode('utf-8')).digest()
    cipher = AES.new(Key, AES.MODE_CBC, iv = IV)
    padded_plain_bytes = cipher.decrypt(bytes.fromhex(Ciphertext))
    
    plain_bytes_length = int.from_bytes(padded_plain_bytes[0:4], 'little')
    plain_bytes = padded_plain_bytes[4:4 + plain_bytes_length]
    if len(plain_bytes) != plain_bytes_length:
        raise ValueError('Invalid Ciphertext.')

    plain_bytes_digest = padded_plain_bytes[4 + plain_bytes_length:4 + plain_bytes_length + SHA256.digest_size]
    if len(plain_bytes_digest) != SHA256.digest_size:
        raise ValueError('Invalid Ciphertext.')

    if SHA256.new(plain_bytes).digest() != plain_bytes_digest:
        raise ValueError('Invalid Ciphertext.')

    return plain_bytes.decode('utf-8')

# AES-CBC解密
result = Decrypt('e6905d7f3c8ce60a2b06353ec4f5ec1f9d3e9f9c8965dd92e03995f5ec8ff67e37cbe8ef95b075b6e748ae23274d4bd8ddba0d9313f011b4d5d9e98a6468bcb2')
print(result)