audit folder which group gives you access - windows

https://www.online-tech-tips.com/windows-xp/how-to-track-and-monitor-who-and-when-someone-accesses-a-folder-on-your-computer/
i followed this guide to add auditing to a specific folder. I added "Everyone" to the audit users.
When i now change something on the folder (create a folder) and see activity in the windows event log.
But where can i read which group gave me access to the specific folder?
Is see stuff like this : D:(A;OICI;FA;;;WD) on Access Reason.
Is there some kind of cryptic translation of the "EveryOne" "Group"
What i need to know basically; Which users are using a specific directory and have access because they are in "EveryOne"
We want to remove "EveryOne" from a specific folder, but need to know which users are using the "group", so we can put them in a Different Group


The above text is formatted using the Security Descriptor Definition Language (SDDL https://msdn.microsoft.com/en-us/library/windows/desktop/aa379567(v=vs.85).aspx). Refer https://msdn.microsoft.com/en-us/library/windows/desktop/aa374928(v=vs.85).aspx to decode your sddl string.
'D:' stands for DACL is changed or created.
The number of parantheses pairs denotes number of the number access control entries added or modified.(in this case 1).
OICI - This indicates that the ACE applies to this folder, its files and its subfolders.
FA denotes what permission is actually provided (All Access).
Finally WD stands for 'Everyone'.
Also refer https://blogs.technet.microsoft.com/askds/2008/05/07/the-security-descriptor-definition-language-of-love-part-2/

Related

Windows Share Permissions for Domain Admins not working

I'm setting up a new share that I've enabled enumerated access on. I'm looking to limit people access to files on a certain folder. I've setup other folders that restrict access unless your in a security group. This folder thats giving me trouble was copied over from another network share. When I create a folder from scratch everything works fine so I'm curious if thats whats giving me issues.
The folder I'm trying to access is
x:/Limerock/Projects/"Project Name"
If I go into the security tab and check my effective access it says that I have full control:
The user I'm signed into is joe.jankowiak which is part of the Domain Admins security group. Domain Admins owns all the folders in above this and has full control.
When trying to enter the folder it tells me I need to request permission. I'm an admin so it goes through and adds "joe.jankowiak" to the full control list in the security permissions.
Why is it not taking my domain admin credentials to enter this folder? I'm seeing other weird behavior such as it saying "Unable to display current owner." and "You must have read permissions to view the properties of this object". Clicking continue lets me see it.
Everything looks right, I've setup 6 other new folders in the exact same manner and they work fine. I've signed in and out many times but it hasn't fixed it. Weird enough, another computer I signed into lets me access the folder just fine. Is there a way to reload file permissions since logging in/out doesn't seem to do it. Is there a command like gpupdate that I should run?

I have seen this before andyou might need to do the following operations in order:
-Replace Ownership on the folder and replace all child object ownership too=>apply or OK
-Close the security properties and re-open it again
-Add Domain Admins as full control and Replace all child object permissions... =>apply/OK
That should do it

Add read permission for all administrators to a copied file

Problem is simple my application copies some file from one location to another.
File at destination folder should be readable by all administrators of computer without elevating privileges.
I've found an API which should do it:
SetNamedSecurityInfoW
SetKernelObjectSecurity
But I'm not fluent with Windows API and this security API is quite complex, so I need help ho to use this API.
Main problem I have is how to get psidGroup? Other stuff is obvious or I can just provide a NULL.
Or is there a better API so I can add this read permission for administrators while file is copied?

psidGroup in SetNamedSecurityInfo is used to change owner or group of the file. There is an example on msdn, get the old Security Info first, then modify(SetEntriesInAcl) and submit(SetNamedSecurityInfo). If you want to set the permission of the a group, set the EXPLICIT_ACCESS.Trustee.TrusteeType to TRUSTEE_IS_GROUP, then you can set the a permission for a group.

Create user independent logfiles in C:\ProgramData

I would like to create logfiles for my application in an user independent lactation. AFAIK C:\ProgramData is good place for that.
I've tried it this way:
if not DirectoryExists('C:\ProgramData\MyApp') then
CreateDirectory('C:\ProgramData\MyApp', nil);
LogFileStream := TFileStream.Create('C:\ProgramData\MyApp\LogFile01.txt', fmCreate, (fmOpenRead or fmShareDenyNone));
The problem with this approach is that the created filed does not have Authenticated Users nor Everyone in Properties->Security->Group or user names.
This results in other users being unable to modify the created files.
But how can I achieve this, also other users being albe to modify the created files.
I think it must be possible to have files with this permission there. Some files do have this permission e.g. C:\ProgramData\Microsoft\Windows\Ringtones\Ringtone *.wav
Maybe either in
1.) somehow creating a 'MyApp' folder in C:\ProgramData with Authenticated Users or Everyone permission which would result in TFileStream automatically creating files with the same permission or
2.) somehow telling TFileStream to create the files with the required permission or
3.) somehow changing the files permission with some API function after its creation or
4.) some other way??

The default permissions in C:\ProgramData, aka FOLDERID_ProgramData allow any user to create new files and folders. However, only the user who creates the file or folder has permission to write to it.
So, if you wish to allow any user to modify objects under FOLDERID_ProgramData then you need to add a permissive ACL to grant those rights. You would typically do that when you installed your program. Create a folder under FOLDERID_ProgramData and add an ACL to grant rights to whichever class of users you wish to allow full access.
As an aside, clearly you should not be hard coding C:\ProgramData, but instead using FOLDERID_ProgramData with the known folder API. I guess the code in the question is just for testing, and your real program code does it correctly.

Remove owner rights

I have a write-restricted folder which may only be written in if the user is in a specific group or has been explicitly given the rights to do so. I have successfully implemented that with C++ using SetNamedSecurityInfo on the folder with the specified groups and users. However, the following scenario gives me trouble:
Admin gives write-rights to user
User creates a file
Admin removes write-rights from user
User keeps writing in the file
The last point is the problem. Since the user is the owner of the file he can write in it, even though the admin removed the right (by removing group membership for example).
I want to accomplish that the ownership of a file does not grant any rights to the owner in that restricted folder.

You need to remove the CREATOR OWNER SID from the folder, and push that down to the files.

Windows / Active Directory - User / Groups

I'm looking for a way to find a the windows login associated with a specific group. I'm trying to add permissions to a tool that only allows names formatted like:
DOMAIN\USER
DOMAIN\GROUP
I have a list of users in active directory format that I need to add:
ou=group1;ou=group2;ou=group3
I have tried adding DOMAIN\Group1, but I get a 'user not found' error.
P.S. should also be noted that I'm not a Lan admin

Programatically or Manually?
Manually, i prefer AdExplorer, which is a nice Active directory Browser. You just connect to your domain controller and then you can look for the user and see all the details. Of course, you need permissions on the Domain Controller, not sure which though.
Programatically, it depends on your language of couse. On .net, the System.DirectoryServices Namespace is your friend. (I don't have any code examples here unfortunately)
For Active Directory, I'm not really an expert apart from how to query it, but here are two links I found useful:
http://www.computerperformance.co.uk/Logon/LDAP_attributes_active_directory.htm
http://en.wikipedia.org/wiki/Active_Directory (General stuff about the Structure of AD)

You need to go to the Active Directory Users Snap In after logging in as a domain admin on the machine:
Go to start --> run and type in mmc.
In the MMC console go to File -->
Add/Remove Snap-In Click Add Select
Active Directory Users and Computers and select Add.
Hit Close and then hit OK.
From here you can expand the domain tree and search (by right-clicking on the domain name).
You may not need special privileges to view the contents of the Active Directory domain, especially if you are logged in on that domain. It is worth a shot to see how far you can get.
When you search for someone, you can select the columns from View --> Choose Columns. This should help you search for the person or group you are looking for.

You do not need domain admin rights to look at the active directory. By default, any (authenticated?) user can read the information that you need from the directory.
If that wasn't the case, for example, a computer (which has an associated account as well) could not verify the account and password of its user.
You only need admin rights to change the contents of the directory.
I think it is possible to set more restricted permissions, but that's not likely the case.

OU is an Organizational Unit (sort of like a Subfolder in Explorer), not a Group, Hence group1, 2 and 3 are not actually groups.
You are looking for the DN Attribute, also called "distinguishedName". You can simply use DOMAIN\DN once you have that.
Edit: For groups, the CN (Common Name) could also work.
The full string from Active Directory normally looks like this:
cn=Username,cn=Users,dc=DomainName,dc=com
(Can be longer or shorter, but the important bit is that the "ou" part is worthless for what you're trying to achieve.

Well, AdExplorer runs on your Local Workstation (which is why I prefer it) and I believe that most users have read access to AD anyway because that's actually required for stuff to work, but I'm not sure about that.

Install the "Windows Support Tools" that is on the Windows Server CD (CD 1 if it's Windows 2003 R2). If your CD/DVD drive is D: then it will be in D:\Support\Tools\SuppTools.msi
This gives you a couple of additional tools to "get at" AD:
LDP.EXE - good for reading information in AD, but the UI kinda stinks.
ADSI Edit - another snap-in for MMC.EXE that you can both browse AD with and get to all those pesky AD attributes you're looking for.
You can install these tools on your local workstation and access AD from there without domain admin privileges. If you can log on to the domain, you can at least query/read AD for this information.

Thanks adeel825 & Michael Stum.
My problem is, though, i'm in a big corporation and do not have access to log in as the domain admin nor to view the active directory, so i guess my solution is to try and get that level of access.

Resources