code: public static String deobfuscate(String s)
      {
          if (s.startsWith("OBF:"))
              s=s.substring(4);
          
          byte[] b=new byte[s.length()/2];
          int l=0;
          for (int i=0;i<s.length();i+=4)
          {
              String x=s.substring(i,i+4);
              int i0 = Integer.parseInt(x,36);
              int i1=(i0/256);
              int i2=(i0%256);
              b[l++]=(byte)((i1+i2-254)/2);
          }
  
          return new String(b,0,l);
      }
docs: /* ------------------------------------------------------------