Fix for edge case where System.Core is not loaded

FuzzySecurity · web-flow · commit 41cad0ee9fa8 · 2017-07-18T13:08:31.000+01:00
Make sure System.Core is loaded before creating an AES object. #247
diff --git a/Exfiltration/Get-GPPPassword.ps1 b/Exfiltration/Get-GPPPassword.ps1
@@ -118,6 +118,9 @@ http://rewtdance.blogspot.com/2012/06/exploiting-windows-2008-group-policy.html
             }
 
             $Base64Decoded = [Convert]::FromBase64String($Cpassword)
+            
+            # Make sure System.Core is loaded
+            [System.Reflection.Assembly]::LoadWithPartialName("System.Core") |Out-Null
 
             #Create a new AES .NET Crypto Object
             $AesObject = New-Object System.Security.Cryptography.AesCryptoServiceProvider
@@ -345,4 +348,4 @@ http://rewtdance.blogspot.com/2012/06/exploiting-windows-2008-group-policy.html
     }
 
     catch { Write-Error $Error[0] }
-}
+}

Original file line number	Diff line number	Diff line change
`@@ -118,6 +118,9 @@ http://rewtdance.blogspot.com/2012/06/exploiting-windows-2008-group-policy.html`
`118`	`118`	`}`
`119`	`119`
`120`	`120`	`$Base64Decoded = [Convert]::FromBase64String($Cpassword)`
	`121`	`+`
	`122`	`+ # Make sure System.Core is loaded`
	`123`	`+ [System.Reflection.Assembly]::LoadWithPartialName("System.Core") \|Out-Null`
`121`	`124`
`122`	`125`	`#Create a new AES .NET Crypto Object`
`123`	`126`	`$AesObject = New-Object System.Security.Cryptography.AesCryptoServiceProvider`
`@@ -345,4 +348,4 @@ http://rewtdance.blogspot.com/2012/06/exploiting-windows-2008-group-policy.html`
`345`	`348`	`}`
`346`	`349`
`347`	`350`	`catch { Write-Error $Error[0] }`
`348`		`-}`
	`351`	`+}`