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+If you have upload access to a non /cgi-bin folder - upload a httpd.conf and configure your own interpreter.
+
+Details from Busybox httpd.c
+
+https://github.com/brgl/busybox/blob/abbf17abccbf832365d9acf1c280369ba7d5f8b2/networking/httpd.c#L60
+
+> *.php:/path/php   # run xxx.php through an interpreter`
+
+>  If a sub directory contains config file, it is parsed and merged with any existing settings as if it was appended to the original configuration.
+
+Watch out for Windows CRLF line endings messing up your payload (you will just get 404 errors) - you cant see these in Burp :)