I'm trying to write a batch script to automatically change the password of an active directory user.
The:
net user <user> /domain <password>
where <user> & <password> are a user and password of some user on the domain.
Results in:
The request will be processed at a domain controller for
domain .
System error 5 has occurred.
Access is denied.
Edit:
I just found out that you need to be the domain controller to be able to run the command.
Is the a way to change a user's password without being the domain controller?
IT Admins with permissions to change passwords can use the QAD Powershell cmdlets to change passwords for accounts. Here’s an example of the Powershell command to run:
Set-QADUser -Identity <account_name> -Proxy -UserPassword <new_password>
For users without elevated permissions to set passwords on other accounts, there is still a Powershell option. You will need to have the Microsoft ActiveDirectory powershell module installed and know the previous password. Here’s some sample code how to accomplish this:
Set-ADAccountPassword -Identity <ADAccount>
This will then prompt for the previous password, and then ask for the new password twice.
For example if you want your process perform automatically:
Set-ADAccountPassword -Identity $username -OldPassword (ConvertTo-SecureString -AsPlainText $oldPass -Force) -NewPassword (ConvertTo-SecureString -AsPlainText $newPass -Force)
Related
I'm trying to create a command to add a domain user to the local administrator group. I already have the command to do it:
Add-LocalGroupMember -Group "Administrators" -Member domain\user
or
net localgroup Administrators Domain\user /add
But I need to ask the user to insert him credentials when run the script. How do I do this?
Get-Credential is what you want:
$cred = Get-Credential
This will prompt the user to enter their username and password in a secure fashion. However...
You can't add a user to a group you aren't a member of, or at least have permissions delegated to manage members of that group (such as local Administrators). If the running user could do this already, entering their credentials wouldn't be required.
If the running user were already in Administrators, you would not need this either, just provide the target principal name (since adding yourself to the Administrators group requires that you already be in Administrators) and make sure your session is elevated.
Honestly, just use a Restricted Groups GPO to control domain users and their local group status. You don't want local users able to manage their local admin group in most situations anyways. If someone does change the membership, the change will gracefully revert on the next gpupdate interval.
You can use:
$Credentials = Get-Credential
It will give you windows login window.
Also there is a way to extract that data like this:
$Credentials = Get-Credential
$Credentials.Password | ConvertFrom-SecureString | Set-Content C:\test\password.txt
$Username = $Credentials.Username
$Password = Get-Content “C:\test\password.txt” | ConvertTo-SecureString
$Credentials = New-Object System.Management.Automation.PSCredential $Username,$Password
There is more in here:
https://sysadminguides.org/2017/05/02/how-to-pass-credentials-in-powershell/
Hope it helps ;-)
I found several answers on the web, but not really what I was searching for.
The issue is as follows:
When restoring a file with "Networker", the ACLs of the file are the same ones as when the file was backed up, regardles of inheritance in the folder the file is restored to. Meaning the inheritence of ACL does not affect the newly restored file.
This leaves me with the problem that only 3 Accounts have the right to alter the ACL.
The user, the file belongs to
The domain Admins
The system account
To solve the issue I would like to run an automated script fixing the ACL and activating the correct inheritance.
The system user for the script has to be one of the three.
The User is changing and thefore not a valid choice, also I dont want to leave any domain admin credentials nor give domain admin rights to a service account.
This leaves me with the system account to do the job and here comes the question:
How do I execute a task in powershell under system account credentials?
I tried
$username = "NT Authority\System"
$password = ConvertTo-SecureString -String "" -AsPlainText -Force
$cred = new-object -typename System.Management.Automation.PSCredential -argumentlist #($username, $password)
Since the password is an empty I can not really create credentials with it.
The name of the account in all locales is .\LocalSystem. The name,
LocalSystem or ComputerName\LocalSystem can also be used. This account
does not have a password.
https://msdn.microsoft.com/de-de/library/windows/desktop/ms684190(v=vs.85).aspx
So now I am a little bit confused as to how I can get this to work.
Edit:
The file system runs on EMC and is not a real Windows File System, but just kinda hooked onto a Linux system. So there is no local administrator account.
TL;DR
I want to inherit ACL Permissions on files using the system account with powershell, how?
https://github.com/mkellerman/Invoke-CommandAs
Made a function to Invoke-Command against local/remote computer using provided credentials or SYSTEM. Returns PSObjects, handles network interruptions and resolves any Double-Hop issues.
Try it out let me know if this resolves your issues.
If you're ok installing a (very useful) 3rd party program, you can try the following. It's a portable .zip, no real installation.
Run as administrator:
C:\WINDOWS\system32>nircmd.exe elevatecmd runassystem c:\windows\System32\cmd.exe
starts a new cmd window:
Microsoft Windows [Version 10.0.18362.418]
(c) 2019 Microsoft Corporation. All rights reserved.
C:\WINDOWS\system32>whoami
nt authority\system
C:\WINDOWS\system32>
https://www.nirsoft.net/utils/nircmd.html
Domain Admins get access via the local Administrators group. Local Administrators can take ownership of any local object and subsequently grant new permissions to that object.
Running something like this as an administrator should do what you want:
takeown /f C:\some\file_or_folder /a /r /d:y
icacls C:\some\file_or_folder /reset /t /c /q
Never use the SYSTEM account for things like this.
Okay, so this has been bugging me for a while and I have tried too many things now.
I'm trying to run a PowerShell script - my user account is a regular one on the domain, it is however local administrator on my computer. Therefore I've created a PowerShell script prompting me for credentials (where I type the credentials of my domain administrator account) to be used to invoke another script which needs this domain administrator elevation.
This script looks like this:
Invoke-Command -FilePath "C:\Temp\script.ps1" -ComputerName localhost -Credential Get-Credential
Here the script.ps1 is the script which needs domain administrator elevation.
Executing the shown script results in a prompt for credential and then the following error:
[localhost] Connecting to remote server localhost failed with the following error message : Access is denied.
I've tried messing around with a .bat file looking like this:
SET ThisScriptsDirectory=%~dp0
SET PowerShellScriptPath=%ThisScriptsDirectory%script.ps1 PowerShell -NoProfile -ExecutionPolicy Bypass -Command "& {Start-Process PowerShell -ArgumentList '-NoProfile -ExecutionPolicy Bypass -File ""%PowerShellScriptPath%""' -Verb RunAs}";
aswell, but I can't make it work - it is not elevating the script to domain administrator level.
Lastly however, I need to mention that the script I want to run with domain elevation works if I open PowerShell with the domain administrator elevation, navigates to C:\Temp\script.ps1 and executes it by .\script.ps1.
Any suggestions?
One topic that helped me (I had a similar case) was the section "HOW TO ENABLE REMOTING FOR NON-ADMINISTRATIVE USERS" in About Remote Troubleshooting. Basically, it tells you to execute a PS Command: Set-PSSessionConfiguration Microsoft.PowerShell -ShowSecurityDescriptorUI and grant execution permission to the user that you are trying to use it.
If you have local administrative rights, run powershell as administrator and run Invoke-Command without the -Credential flag.
If you're only running the script locally, you don't need Invoke-Command. You're better off just running the script and passing arguments to it.
Enable PSRemoting Service to Start Automatic
on both host and remote machines
Set-Service winrm -StartupType Automatic
Start-Service winrm
Enable PSREmoting
On both host and remote machines
EnablePSRemoting -Force
Add computers to Trusted Hosts
On Remote machine
Set-Item wsman:\localhost\Client\TrustedHosts -Value "$(hostname),*$((Get-WmiObject Win32_ComputerSystem).Domain)"
Enable Multi Hopping in Powershell Remoting
Identify which hosts to allow passing of Creds
Enable-WSManCredSSP –Role Client –DelegateComputer "$(hostname),*$((Get-WmiObject Win32_ComputerSystem).Domain)"
On the source machine.
Enable-WSManCredSSP –Role Server
You must specify Authentication and a Credential
on Host Machine
$Cred = [System.Management.Automation.PSCredential]::new("<username>",$("<Password>" | ConvertTo-SecureString -AsPlainText -Force))
invoke-command -ComputerName localhost -ScriptBlock {Write-Host $args[0]} -ArgumentList "Hello!, It Works" -Authentication Credssp -Credential $cred
REFERENCE
https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_remote_troubleshooting?view=powershell-6
Well, you are doing it wrong if I understand it correctly.
Credential you provided is used to access localhost (which you don't need BTW). Script is still executed unelevated. There are two solutions:
You need to elevate the powershell itself and execute the script.
You need to change the script so that it itself accepts Credential parameter and use it to access things. There isn't much more I can say about it until you show the script.
You can elevate shell with:
start powershell -verb Runas
The problem here is that unless you disable UAC, it will prompt you. Unfortunately there is no easy way around this that I know. One sure way is to add the script to task scheduler and set the task to run elevated, then run it and delete the task. All of this can be automated ofc. This is a consequence of unfortunate design of UAC system (sudo on Linux that serves the same purpose will cache the response for some time so that subsequent commands do not prompt). This would go something like:
schtasks /Create /TN runner ... /TR powershell -File script.ps1 /RU username /RP password /RL HIGHEST
schtasks /run runner
schtasks /delete runner
I'm trying to write a command line script that will check if an local user account exists and create that account if it doesn't.
I have the two commands, but I want to put it together into a conditional check.
Command to check if the account exists.
Net user | find /i "Username"
Here's the command to create the account.
NET USER Username {Password} /EXPIRES: NEVER /ADD
Also, I'm having problems with the /Expires switch working. When I check the account's settings it doesn't have "Password never expires" as checked.
The /Expires switch is for the account, not the password. Try running this from PowerShell.
$user = "User3"
NET USER $user "Good1!PW" /Add
Set-LocalUser -Name $user -PasswordNeverExpires $true -UserMayChangePassword $false
Is there any single line command for Run As Different User in Windows 7.
I am using following command but then it ask for password
runas /user:USER-NAME "C:\full\path\of\Program.exe"
Is there any way to supply password also in above line ? Actually i am launching application from other application so I don't want any user interaction But in above command it ask user for PASSWORD
PsExec in the MS SysInternals suite:
psexec -user Administrator -p Passwd "xcopy a.xml \\server_over_there\c$\A.xml"
In case the local user is NOT what you need and a specific DOMAIN user is, use:
/user Username in form USER#DOMAIN or DOMAIN\USER
(USER#DOMAIN is not compatible with /netonly)