How to rewrite this: apache change to nginx

Hello, I am trying to rewrite for joomla, some stuff from apache to
nginx, somehow I am not doing it right coz its not working… Can some
one help me to rewrite this:

RewriteEngine On

Block out any script trying to set a mosConfig value through the URL

RewriteCond %{QUERY_STRING} mosConfig_[a-zA-Z_]{1,21}(=|%3D) [OR]

Block out any script trying to base64_encode crap to send via URL

RewriteCond %{QUERY_STRING} base64_encode.(.) [OR]

Block out any script that includes a tag in URL

RewriteCond %{QUERY_STRING} (<|%3C).script.(>|%3E) [NC,OR]

Block out any script trying to set a PHP GLOBALS variable via URL

RewriteCond %{QUERY_STRING} GLOBALS(=|[|%[0-9A-Z]{0,2}) [OR]

Block out any script trying to modify a _REQUEST variable via URL

RewriteCond %{QUERY_STRING} _REQUEST(=|[|%[0-9A-Z]{0,2})

Send all blocked request to homepage with 403 Forbidden error!

RewriteRule ^(.*)$ index.php [F,L]

RewriteBase /

########## Begin - Joomla! core SEF Section

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_URI} !^/index.php
RewriteCond %{REQUEST_URI}
(/|.php|.html|.htm|.feed|.pdf|.raw|/[^.])$ [NC]
RewriteRule (.
) index.php
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization},L]

########## End - Joomla! core SEF Section