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Read Windows Credential Manager - (Moved)


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  • Moderators

Moved to the appropriate forum.

Moderation Team

Public_Domain.png.2d871819fcb9957cf44f4514551a2935.png Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind

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I just tried and it works fine for me.

If you are looking for network passwords, then you can't read them from the credential store.  If I remember correctly, only creds stored as Legacy can return passwords.

Here is a fully working script instead of just the function that I linked to.

#include <Array.au3>
$aCredList = _Credentials_Enumerate()

_ArrayDisplay($aCredList, "Creds")

Func _Credentials_Enumerate()
    Local $sCredList
    Local $iCred = -1
    Local $aCredList[10000][2]  ;set max number of Creds initally to 10,000, will be reDimed down before returning the array

    $iPID = Run(@SystemDir & "\cmdkey.exe /list", @SystemDir, @SW_HIDE, $STDOUT_CHILD)
    ProcessWaitClose($iPID)
    $sOutput = StdoutRead($iPID)

    If StringInStr($sOutput, "Currently stored credentials:") Then

        $aSplit = StringSplit($sOutput, @CRLF)

        For $c = 1 to $aSplit[0]
            If StringInStr($aSplit[$c], "Target:") Then

                $sCredList = StringStripWS(StringRight($aSplit[$c], StringLen($aSplit[$c]) - StringInStr($aSplit[$c], "=")), 3) ;Get the Target Server name
                $iCred += 1                                                 ;Increase the Credential counter by 1
                $aCredList[$iCred][0] = $sCredList                          ;Store the credential target in the 2D array

                For $d = $c to $aSplit[0]                                   ;Continue searching the output for this credentials UserName
                    If StringInStr($aSplit[$d], "User:") Then

                        $sCredList = StringStripWS(StringRight($aSplit[$d], StringLen($aSplit[$d]) - StringInStr($aSplit[$d], ":")), 3) ;Get the UserName
                        $aCredList[$iCred][1] = $sCredList                  ;Store the credential UserName in the 2D array

                        ExitLoop                                            ;We found the UserName, so exit out of this loop to look for the next Credential Target line
                    EndIf
                Next

                $c = $d                                                     ;Set the C loop to where we found the UserName line to speed it up a little

            EndIf
        Next

    Else

        MsgBox(0, "Stored Creds", "No stored credentials were found")

    EndIf

    ReDim $aCredList[$iCred][2]

    Return  $aCredList

EndFunc ;_Credentials_Enumerate

 

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  • 3 weeks later...

I am going to try the code again tomorrow but I have included a screen shot of an example credential I am trying to pull from credential manager. Before I waste hours playing around with code, is it possible to pull the username and password?

 

image.png.4b699bac82240cdfb43f018621ba2307.png

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You should be able to run this function to get that if it's a local credential.

_Cred_Get("test", 1)

;================================================================================================
;===== Retrieve the Credentials for the specified item  =========================================
;================================================================================================
Func _Cred_Get($sTarget, $iType = 1)  ;Type: 2=Domain, 1=Local.  CAN'T RETURN DOMAIN PASSWORDS!!!
    Local $FuncRet[3]

    Local $structTarget = DllStructCreate("wchar[100]")
    DllStructSetData($structTarget,1,$sTarget)

    Local $hAdvapi32 = DllOpen("Advapi32.dll")
    If $hAdvapi32 = -1 Then
        Msgbox(0, "Error", "Failed to connect to the Credentials Store")
        Exit
    Endif

    Local $Ret = DllCall($hAdvapi32, 'bool', 'CredReadW', 'ptr', DllStructGetPtr($structTarget), 'dword', $iType, 'dword', 0, 'ptr*', 0)

    if $ret[0]=0 then Return SetError(1,0,$FuncRet)

    Local $structCREDENTIAL= "" & _
        "DWORD Flags;" & _
        "DWORD Type;"  & _
        "Ptr TargetName;" & _
        "Ptr Comment;" & _
        "UINT64 LastWritten;" & _
        "DWORD CredintialBlobSize;" & _
        "Ptr CredentialBlob;" & _
        "DWORD Persist;" & _
        "DWORD AttributeCount;" & _
        "Ptr Attributes;" & _
        "Ptr TargetAlias;" & _
        "Ptr Username"

    Local $tdata=DllStructCreate($structCREDENTIAL, $Ret[4])

    Local $userName = DllStructCreate("wchar[513]", DllStructGetData($tdata, 'Username'))
    Local $User = DllStructGetData($userName, 1)

    Local $CredentialBlobSize = DllStructGetData($tdata, 'CredintialBlobSize')
    Local $credentialBlob = DllStructCreate("wchar[512]", DllStructGetData($tdata, 'CredentialBlob'))
    Local $Password = StringLeft(DllStructGetData($credentialBlob, 1), $CredentialBlobSize/2)

    Local $Comment = DllStructCreate("wchar[256]", DllStructGetData($tdata, 'Comment'))
    Local $Comm = DllStructGetData($Comment, 1)

    Dim $FuncRet[] = [$User, $Password, $Comm]
    Return $FuncRet

EndFunc ;_Cred_Get

 

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  • Developers

Show what you have tried.... assuming you actually added the line to call the function as indicated in the previous post.

Jos

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;================================================================================================
;===== Retrieve the Credentials for the specified item  =========================================
;================================================================================================
_Cred_Get("test", 1)

Func _Cred_Get($sTarget, $iType = 1)  ;Type: 2=Domain, 1=Local.  CAN'T RETURN DOMAIN PASSWORDS!!!
    Local $FuncRet[3]

    Local $structTarget = DllStructCreate("wchar[100]")
    DllStructSetData($structTarget,1,$sTarget)

    Local $hAdvapi32 = DllOpen("Advapi32.dll")
    If $hAdvapi32 = -1 Then
        Msgbox(0, "Error", "Failed to connect to the Credentials Store")
        Exit
    Endif

    Local $Ret = DllCall($hAdvapi32, 'bool', 'CredReadW', 'ptr', DllStructGetPtr($structTarget), 'dword', $iType, 'dword', 0, 'ptr*', 0)

    if $ret[0]=0 then Return SetError(1,0,$FuncRet)

    Local $structCREDENTIAL= "" & _
        "DWORD Flags;" & _
        "DWORD Type;"  & _
        "Ptr TargetName;" & _
        "Ptr Comment;" & _
        "UINT64 LastWritten;" & _
        "DWORD CredintialBlobSize;" & _
        "Ptr CredentialBlob;" & _
        "DWORD Persist;" & _
        "DWORD AttributeCount;" & _
        "Ptr Attributes;" & _
        "Ptr TargetAlias;" & _
        "Ptr Username"

    Local $tdata=DllStructCreate($structCREDENTIAL, $Ret[4])

    Local $userName = DllStructCreate("wchar[513]", DllStructGetData($tdata, 'Username'))
    Local $User = DllStructGetData($userName, 1)

    Local $CredentialBlobSize = DllStructGetData($tdata, 'CredintialBlobSize')
    Local $credentialBlob = DllStructCreate("wchar[512]", DllStructGetData($tdata, 'CredentialBlob'))
    Local $Password = StringLeft(DllStructGetData($credentialBlob, 1), $CredentialBlobSize/2)

    Local $Comment = DllStructCreate("wchar[256]", DllStructGetData($tdata, 'Comment'))
    Local $Comm = DllStructGetData($Comment, 1)

    Dim $FuncRet[] = [$User, $Password, $Comm]
    Return $FuncRet
EndFunc ;_Cred_Get

 

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  • Developers

An array is returned and you aren't doing anything with it. Something like this might tell you something:

$retarray = _Cred_Get("test", 1)
ConsoleWrite('@@ Debug(' & @ScriptLineNumber & ') : Error code: ' & @error & @CRLF) ;### Debug Console
ConsoleWrite('@@ Debug(' & @ScriptLineNumber & ') : $retarray[0] = ' & $retarray[0] & @CRLF) ;### Debug Console
ConsoleWrite('@@ Debug(' & @ScriptLineNumber & ') : $retarray[1] = ' & $retarray[1] & @CRLF) ;### Debug Console
ConsoleWrite('@@ Debug(' & @ScriptLineNumber & ') : $retarray[2] = ' & $retarray[2] & @CRLF) ;### Debug Console

Jos

SciTE4AutoIt3 Full installer Download page   - Beta files       Read before posting     How to post scriptsource   Forum etiquette  Forum Rules 
 
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Dream of the future,
Learn from the past.
  :)

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I am still not getting anything.

 

_Cred_Get("test", 1)

Func _Cred_Get($sTarget, $iType = 1)  ;Type: 2=Domain, 1=Local.  CAN'T RETURN DOMAIN PASSWORDS!!!
    Local $FuncRet[3]

    Local $structTarget = DllStructCreate("wchar[100]")
    DllStructSetData($structTarget,1,$sTarget)

    Local $hAdvapi32 = DllOpen("Advapi32.dll")
    If $hAdvapi32 = -1 Then
        Msgbox(0, "Error", "Failed to connect to the Credentials Store")
        Exit
    Endif

    Local $Ret = DllCall($hAdvapi32, 'bool', 'CredReadW', 'ptr', DllStructGetPtr($structTarget), 'dword', $iType, 'dword', 0, 'ptr*', 0)

    if $ret[0]=0 then Return SetError(1,0,$FuncRet)

    Local $structCREDENTIAL= "" & _
        "DWORD Flags;" & _
        "DWORD Type;"  & _
        "Ptr TargetName;" & _
        "Ptr Comment;" & _
        "UINT64 LastWritten;" & _
        "DWORD CredintialBlobSize;" & _
        "Ptr CredentialBlob;" & _
        "DWORD Persist;" & _
        "DWORD AttributeCount;" & _
        "Ptr Attributes;" & _
        "Ptr TargetAlias;" & _
        "Ptr Username"

    Local $tdata=DllStructCreate($structCREDENTIAL, $Ret[4])

    Local $userName = DllStructCreate("wchar[513]", DllStructGetData($tdata, 'Username'))
    Local $User = DllStructGetData($userName, 1)

    Local $CredentialBlobSize = DllStructGetData($tdata, 'CredintialBlobSize')
    Local $credentialBlob = DllStructCreate("wchar[512]", DllStructGetData($tdata, 'CredentialBlob'))
    Local $Password = StringLeft(DllStructGetData($credentialBlob, 1), $CredentialBlobSize/2)

    Local $Comment = DllStructCreate("wchar[256]", DllStructGetData($tdata, 'Comment'))
    Local $Comm = DllStructGetData($Comment, 1)

    Dim $FuncRet[] = [$User, $Password, $Comm]
    Return $FuncRet

    $retarray = _Cred_Get("test", 1)
   ConsoleWrite('@@ Debug(' & @ScriptLineNumber & ') : Error code: ' & @error & @CRLF) ;### Debug Console
   ConsoleWrite('@@ Debug(' & @ScriptLineNumber & ') : $retarray[0] = ' & $retarray[0] & @CRLF) ;### Debug Console
   ConsoleWrite('@@ Debug(' & @ScriptLineNumber & ') : $retarray[1] = ' & $retarray[1] & @CRLF) ;### Debug Console
   ConsoleWrite('@@ Debug(' & @ScriptLineNumber & ') : $retarray[2] = ' & $retarray[2] & @CRLF) ;### Debug Console

 EndFunc ;_Cred_Get

 

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24 minutes ago, mknope said:

I am still not getting anything.

Yep, you don't get it at all.  Maybe find another job...

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  • Developers
8 hours ago, mknope said:

I am still not getting anything.

Makes sense when you don't put the code I provided at the top instead of what you already had unless you expect magic. ;) 

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Live for the present,
Dream of the future,
Learn from the past.
  :)

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