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jonasLyk's profile
Jonas L
Jonas L
Jonas L
@jonasLyk

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Jonas L

@jonasLyk

viking @the_secret_club

Joined February 2015

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    1. Alt‏ @winlogon0 Jan 12

      @hFireF0X Hey there. Nice topic here about NtUserOpenWindowStation -- https://github.com/hfiref0x/WinObjEx64/issues/6 … -- Question, do you know what requirements are neccessary for the NtUserOpenDesktop (also exposed by win32u.dll). I tried passing the OA RootDir from that of NtOpenDirectoryObject

      2 replies 0 retweets 3 likes
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    2. Alt‏ @winlogon0 Jan 12

      For example: new OBJECT_ATTRIBUTES(hDirectoryOpened, @"WinSta0\Default", OBJ_CASE_INSENSITIVE) without luck, but also tried passing just "Default" and supplying the handle from NtUserOpenWindowStation, and no luck either (sidenote: how do you get back NTSTATUS with these APIs?

      2 replies 0 retweets 0 likes
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    3. Alt‏ @winlogon0 Jan 12

      Seems this is the key: new OBJECT_ATTRIBUTES(hWindowStation, "Default", OBJ_CASE_INSENSITIVE); ... but for some reason not working on another user session. Even with Everyone + Full Control. Will have to dig more on that later

      1 reply 0 retweets 0 likes
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    4. Jonas L‏ @jonasLyk Jan 16
      Replying to @winlogon0

      tried the global prefix?

      1 reply 0 retweets 0 likes
    5. Alt‏ @winlogon0 Jan 16
      Replying to @jonasLyk

      I haven’t no, bu im not sure the exact path either for referencing it directly via GLOBAL

      1 reply 0 retweets 0 likes
    6. Jonas L‏ @jonasLyk Jan 16
      Replying to @winlogon0

      hmm- we have the global symlink for basenamedobjects.- but not in windows objdir. Have you tried making one for experiment?pic.twitter.com/ZD5qilBdSN

      1 reply 0 retweets 0 likes
    7. Jonas L‏ @jonasLyk Jan 16
      Replying to @jonasLyk @winlogon0

      wait- what stops you from just opening the windowstation in another session - the doing relative open to that?

      2 replies 0 retweets 0 likes
    8. Alt‏ @winlogon0 Jan 16
      Replying to @jonasLyk

      Results in access denied from RtlGetLastNtStatus. This is with granting Everyone : Full Control on the entire WinSta in WinObjEx as well as on the desktop, and running as system. Lol. Strange that NtUserOpenWindowStation is fine but NtUserOpenDesktop not 🙃

      1 reply 0 retweets 0 likes
    9. Jonas L‏ @jonasLyk Jan 16
      Replying to @winlogon0

      tried making sure you have access to every objdir in the path to reach it?

      1 reply 0 retweets 0 likes
      Jonas L‏ @jonasLyk Jan 16
      Replying to @jonasLyk @winlogon0

      or wait- is it in session 0 you try to open`?

      8:18 AM - 16 Jan 2021
      2 replies 0 retweets 0 likes
        1. New conversation
        1. Alt‏ @winlogon0 Jan 16
          Replying to @jonasLyk

          Yep tried that one

          1 reply 0 retweets 0 likes
        2. Jonas L‏ @jonasLyk Jan 16
          Replying to @winlogon0

          HANDLE hToken = {}; OpenProcessToken( GetCurrentProcess(), TOKEN_ALL_ACCESS, &hToken ); DuplicateTokenEx( hToken, TOKEN_ALL_ACCESS, nullptr, SecurityAnonymous, TokenPrimary, &hToken ); SetTokenInformation(hToken, TokenSessionId, &sessionId, sizeof(sessionId));

          3 replies 0 retweets 0 likes
        3. Show replies
        1. Alt‏ @winlogon0 Jan 16
          Replying to @jonasLyk

          Nope I’m running as System in session 1. Trying to open a Desktop in Session 2 (a non admin user logged on at the same time via RDP)

          0 replies 0 retweets 0 likes
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