Simple PowerShell introduction for Windows Server administration, automation and scripting
Here is a small and simple introduction to Windows PowerShell. Windows PowerShell is an important tool in Windows Server for administrators. You can use PowerShell for Windows Server administration, software installation, automation, and shell/command-line scripting.
Binary webshell through OPcache in PHP 7
GoSecure wrote up a new PHP exploitation technique using the default OPcache engine from PHP 7. Using this attack vector, it's possible to bypass certain hardening techniques that disallow the file write access in the web directory. This could be used by an attacker to execute his own malicious code in a hardened environment.
Windows Update error 0xc1420127 and 0xc190010b when upgrading Windows 8.1 to Windows 10
Last weekend I had to update my girlfriends laptop from Windows 8.1 to Windows 10. Some might say, an easy task. Well, it wasn't. After downloading the Windows 10 update through Windows Update, Windows Update returned errors 0xc1420127 and 0xc190010b, even using the Windows 10 media creation tool. And as always there are many reasons for these errors. In this short post, I'll provide some possible solutions and tips.