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How to run powershell in constrained language mode all the time?
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<blockquote data-quote="Andy Ful" data-source="post: 1054484" data-attributes="member: 32260"><p>He removed built-in PowerShell temporarily, by removing the PowerShell folders. It can be restored after some .NET Framework update.</p><p>Different versions of PowerShell can coexist, but blocking PS scripts in one version does not apply in another. How to block PS scripts also in ver. 7 is explained in the video posted in this thread.</p><p></p><p>Edit.</p><p>Instead of messing with the PowerShell 7.0 installation files one can simply add the registry key:</p><p></p><p>[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\PowerShellCore]</p><p>"EnableScripts"=dword:00000000</p><p></p><p>This will automatically add the second key:</p><p></p><p>[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\PowerShellCore]</p><p>"EnableScripts"=dword:00000000</p><p></p><p>If the attacker would like to install & run PowerShell 7.0 (to bypass the ExecutionPolicy in Windows built-in PowerShell), then the script execution will be blocked.</p></blockquote><p></p>
[QUOTE="Andy Ful, post: 1054484, member: 32260"] He removed built-in PowerShell temporarily, by removing the PowerShell folders. It can be restored after some .NET Framework update. Different versions of PowerShell can coexist, but blocking PS scripts in one version does not apply in another. How to block PS scripts also in ver. 7 is explained in the video posted in this thread. Edit. Instead of messing with the PowerShell 7.0 installation files one can simply add the registry key: [HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\PowerShellCore] "EnableScripts"=dword:00000000 This will automatically add the second key: [HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\PowerShellCore] "EnableScripts"=dword:00000000 If the attacker would like to install & run PowerShell 7.0 (to bypass the ExecutionPolicy in Windows built-in PowerShell), then the script execution will be blocked. [/QUOTE]
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