Beef up the default values for precise alloc size and consistency

Author: sinn3r

lib/msf/core/exploit/http/server.rb

@@ -829,8 +829,8 @@ def js_property_spray
 			if (shellcode     == undefined)  { throw "Missing argument: shellcode"; }
 			if (objId         == undefined)  { throw "Missing argument: objId"; }
 			if (offset        == undefined)  { offset        = 0x104; }
-			if (heapBlockSize == undefined)  { heapBlockSize = 0x40000; }
-			if (maxAllocs     == undefined)  { maxAllocs     = 0x250; }
+			if (heapBlockSize == undefined)  { heapBlockSize = 0x80000; }
+			if (maxAllocs     == undefined)  { maxAllocs     = 0x350; }
 			if (browser       == undefined)  { browser       = 'generic'; }
 
 			if (offset > 0x800) { throw "Bad alignment"; }