Techblog and Security
With my researches, described on my other post Hunting for LPEs in Gaming Software. I was curious about GOG services which run as Local System. I installed GOG on a „fresh“ Windows 11 and Windows 10 system and focused again to the Service „GalaxCommunication“. As we can see the Service is still running with SYSTEM
Continue Reading „GOG Galaxy – CVE-2022-31262“
Recently I started to dive deeper into the topic „LPE on Windows“, obviously one of the first things you will learn is to look what runs as system and does it load anything were you have write access to. The Theory I started my learning with some very educating sources about DLL Ghosting and Sideloading.
Continue Reading „Hunting for LPEs in Gaming Software“
In my last post I described how to extract the firmware, this was quite easy. But to rebuild a firmware is something different. This is a three part long story I need to be honest here, just remembering back to this process is painful, I will just describe some problems about the whole process that
Continue Reading „RE: DC-932L Reversing a Webcam Part 3 – Building the Firmware „
In my last post I described how to get a shell on the device, but my final goal was to extract the firmware, manipulate some data in it and rebuild it so that I have a custom firmware for this device. This is a three part long story There are some good resources about this
Continue Reading „RE: DC-932L Reversing a Webcam Part 2 – Extracting the Firmware“
Introduction and Story I remember, more then a year ago I watched this fantastic video from stacksmashing about reverse engineering and rebuilding a custom firmware for a webcam. I was absolutely stunned that this is possibile and thought about to try this some time on a device I have at home. As usual, time passes
Continue Reading „RE: DC-932L Reversing a Webcam Part 1 – Getting a Shell“
Metabase GeoJSON API Endpoint Back in September 2021, Metabase released a security announcement regarding its GeoJSON API endpoint: GeoJSON URL validation can expose server files and environment variables to unauthorized users We’ve discovered a potential security issue with the custom GeoJSON map (admin->settings->maps->custom maps->add a map) support and potential local file inclusion (including environment variables).
Continue Reading „NTLM Attack in Metabase CVE-2022-24853“
Doing one of the recent HTB Boxes i came across the tool https://nettools.net and learned how you can retrieve gMSA passwords with it: https://nettools.net/howto-retrieving-gmsa-password-details/ Additional to the howto from NetTools you can change the encoding for the desired attribute to only retrieve the current password this will print you only the current password as hex
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Today i just found another exploit in the PHP Voting System. The file /admin/candidates_add.php is vulnerable against unauthenticated file upload which can use for RCE. Exploit DB entry: https://www.exploit-db.com/exploits/49846 Vulnerable file candidates_add.php You just need to send a POST with multipart/form-data so you can upload any file you wish. There is no cookie or file
Continue Reading „PHP Voting System – Unauthenticated Remote Code Execution“
Today i found a new exploit in the PHP Voting System. Exploit-DB entry: https://www.exploit-db.com/exploits/49843 The /admin/login.php is vulnerable against SQL injections and so you can bypass the admin authentication. login.php As you can see the first check if($query->num_rows < 1)against the username is only checking the number of rows. With the following statement you always
Continue Reading „PHP Voting System – Admin Authentication Bypass (SQLI)“
In version 0.147.3 of valheim there is a possibility to receive and extract the passwords entered by the user. Responsible disclosure: I send an Email to the developer Team of irongatestudio, but unfortunately they didd’t respond to me. This is only possible if you control the server binaries! at this moment there was no possibility
Continue Reading „Research Valheim Server Passwords“