Powershell: Executing Base64 commands returns error?

Question

I need help with a simple test case of executing a CLI command through PowerShell which has already been encoded in Base64.

Suppose Get-ChildItem has been converted in advance to Base64 string R2V0LUNoaWxkSXRlbQ==.

Further suppose I have a DOS CLI instance open, and I want to test executing this string in powershell:

C:>\ powershell.exe -enc R2V0LUNoaWxkSXRlbQ==

However, I receive the following error:

The term '???????' is not recognized as the name of a cmdlet, function, script file, or operable program.  Check the spelling of the name, or if a path was included, verify that the path is correct and try again. 
At line:1 char:8
*??????? <<<<
    + CategoryInfo        :ObjectNotFound: (???????:String) [], CommandNotFoundException
    + FullyQualifiedErrorID: CommandNotFoundException

我知道有一种方法可以引入变量的使用，甚至包括编码过程本身。但我想知道的是，这种方法可以挽救吗？我可能做错了什么？我在 Win7 中运行 PS 2.0 版。

Answer 1

如果必须对其进行编码，请使用以下命令获取 Base64 字符串：

[Convert]::ToBase64String([System.Text.Encoding]::Unicode.GetBytes('Get-ChildItem'))

尝试这对我有用：

powershell.exe -encodedCommand RwBlAHQALQBDAGgAaQBsAGQASQB0AGUAbQA=