Escaped Characters in Signature Fixed

Dollar Sign wasn't escaped correctly.

Author: Cyanoth

YoutubeExtractor/YoutubeExtractor/Decipherer.cs

@@ -13,10 +13,17 @@ public static string DecipherWithVersion(string cipher, string cipherVersion)
             string js = HttpHelper.DownloadString(jsUrl);
 
             //Find "C" in this: var A = B.sig||C (B.s)
-            string functNamePattern = @"\.sig\s*\|\|(\w+|$)\(";
+            string functNamePattern = @"\.sig\s*\|\|([a-zA-Z0-9\$]+)\("; //Regex Formed To Find Word or DollarSign
+
             var funcName = Regex.Match(js, functNamePattern).Groups[1].Value;
+            
+            if (funcName.Contains("$")) 
+            {
+                funcName = "\\" + funcName; //Due To Dollar Sign Introduction, Need To Escape
+            }
+
             string funcBodyPattern = @"(?<brace>{([^{}]| ?(brace))*})";  //Match nested angle braces
-            string funcPattern = string.Format(@"{0}\(\w+\){1}", funcName, funcBodyPattern);
+            string funcPattern = string.Format(@"{0}\(\w+\){1}", @funcName, funcBodyPattern); //Escape funcName string
             var funcBody = Regex.Match(js, funcPattern).Groups["brace"].Value; //Entire sig function
             var lines = funcBody.Split(';'); //Each line in sig function