Need to avoid badchar 0x00

sinn3r · sinn3r · commit 0634cb989233 · 2013-03-22T13:18:32.000-05:00
0x00 becomes double null, which functions like a terminator
diff --git a/lib/msf/core/exploit/http/server.rb b/lib/msf/core/exploit/http/server.rb
@@ -798,7 +798,7 @@ def js_base64
 	# publication on "DEPS – Precise Heap Spray on Firefox and IE10".
 	#
 	# The "sprayHeap" JavaScript function supports the following arguments:
-	#   shellcode     => The shellcode to spray in JavaScript.
+	#   shellcode     => The shellcode to spray in JavaScript.  Note: Avoid null bytes.
 	#   objId         => Optional. The ID for a <div> HTML tag.
 	#   offset        => Optional. Number of bytes to align the shellcode, default: 0x104
 	#   heapBlockSize => Optional. Allocation size, default: 0x80000

Original file line number	Diff line number	Diff line change
`@@ -798,7 +798,7 @@ def js_base64`
`798`	`798`	`# publication on "DEPS – Precise Heap Spray on Firefox and IE10".`
`799`	`799`	`#`
`800`	`800`	`# The "sprayHeap" JavaScript function supports the following arguments:`
`801`		`- # shellcode => The shellcode to spray in JavaScript.`
	`801`	`+ # shellcode => The shellcode to spray in JavaScript. Note: Avoid null bytes.`
`802`	`802`	`# objId => Optional. The ID for a <div> HTML tag.`
`803`	`803`	`# offset => Optional. Number of bytes to align the shellcode, default: 0x104`
`804`	`804`	`# heapBlockSize => Optional. Allocation size, default: 0x80000`