[GH-ISSUE #897] Unresponsive Client #614

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opened 2026-02-27 15:51:07 +03:00 by kerem · 7 comments
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Originally created by @assadi49 on GitHub (Dec 22, 2020).
Original GitHub issue: https://github.com/quasar/Quasar/issues/897

I tested my payload on multiple devices and performed perfectly except for the device I am targeting,
what are the possible causes of such a problem knowing that I have disabled the antivirus, the firewall and the .NET framework is installed on the client side (Windows 10)?

Originally created by @assadi49 on GitHub (Dec 22, 2020). Original GitHub issue: https://github.com/quasar/Quasar/issues/897 **I tested my payload on multiple devices and performed perfectly except for the device I am targeting, what are the possible causes of such a problem knowing that I have disabled the antivirus, the firewall and the .NET framework is installed on the client side (Windows 10)?**
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@BurntDog commented on GitHub (Dec 24, 2020):

Is the client running at all? Download cports from https://www.nirsoft.net/utils/cports.html confirm if it is trying to connect at all.

<!-- gh-comment-id:751129426 --> @BurntDog commented on GitHub (Dec 24, 2020): Is the client running at all? Download cports from https://www.nirsoft.net/utils/cports.html confirm if it is trying to connect at all.
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@assadi49 commented on GitHub (Dec 26, 2020):

Is the client running at all? Download cports from https://www.nirsoft.net/utils/cports.html confirm if it is trying to connect at all.

I just checked, it is listening, but not connected!

<!-- gh-comment-id:751385943 --> @assadi49 commented on GitHub (Dec 26, 2020): > Is the client running at all? Download cports from https://www.nirsoft.net/utils/cports.html confirm if it is trying to connect at all. I just checked, it is listening, but not connected!
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@BurntDog commented on GitHub (Dec 26, 2020):

So, client trying to connect and server waiting for connection? If so Try this,
Reset Network TCP/IP stack
If your TCP/IP stack is corrupted it can be reseted with the following commands.

Windows XP:

  1. Search for Command Prompt > Run As Administrator
  2. netsh winsock reset
  3. netsh int ip reset
  4. ipconfig /flushdns
  5. Restart computer

Windows Vista, 7, 8, 10:

  1. Search for Command Prompt > Run As Administrator
  2. netsh winsock reset catalog
  3. netsh int ipv4 reset reset.log
  4. netsh int ipv6 reset reset.log
  5. Restart computer
    Reminder: Windows 10 Defender will automatically re-enable itself after a short while..
<!-- gh-comment-id:751406199 --> @BurntDog commented on GitHub (Dec 26, 2020): So, client trying to connect and server waiting for connection? If so Try this, Reset Network TCP/IP stack If your TCP/IP stack is corrupted it can be reseted with the following commands. Windows XP: 1. Search for Command Prompt > Run As Administrator 2. netsh winsock reset 3. netsh int ip reset 4. ipconfig /flushdns 5. Restart computer Windows Vista, 7, 8, 10: 1. Search for Command Prompt > Run As Administrator 2. netsh winsock reset catalog 3. netsh int ipv4 reset reset.log 4. netsh int ipv6 reset reset.log 5. Restart computer Reminder: Windows 10 Defender will automatically re-enable itself after a short while..
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@assadi49 commented on GitHub (Dec 31, 2020):

Sorry that didn't resolve the issue, I think the server requires elements that are not installed on the client device.

<!-- gh-comment-id:752947047 --> @assadi49 commented on GitHub (Dec 31, 2020): Sorry that didn't resolve the issue, I think the server requires elements that are not installed on the client device.
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@MaxXor commented on GitHub (Jan 1, 2021):

Is the device you're running the client on fully updated with latest .NET framework and Windows updates?

<!-- gh-comment-id:753359811 --> @MaxXor commented on GitHub (Jan 1, 2021): Is the device you're running the client on fully updated with latest .NET framework and Windows updates?
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@assadi49 commented on GitHub (Jan 2, 2021):

Is the device you're running the client on fully updated with latest .NET framework and Windows updates?

Oddly yes!

<!-- gh-comment-id:753478312 --> @assadi49 commented on GitHub (Jan 2, 2021): > Is the device you're running the client on fully updated with latest .NET framework and Windows updates? Oddly yes!
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@BurntDog commented on GitHub (Jan 6, 2021):

Just to confirm. What antivirus is installed, Windows Defender only? Remember that Defender will not stay off, it will turn back on automatically (part of recent security updates) after a short time. To be safe make a exclusion for your client.

<!-- gh-comment-id:755050624 --> @BurntDog commented on GitHub (Jan 6, 2021): Just to confirm. What antivirus is installed, Windows Defender only? Remember that Defender will not stay off, it will turn back on automatically (part of recent security updates) after a short time. To be safe make a exclusion for your client.
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