查找HEX模式和出现次数 [英] Find HEX patterns and number of occurrences

问题描述

我想找到模式，并根据HEX文件中的出现次数对它们进行排序。

我不是在寻找某种特定模式，只是为了使事件发生的事情，并整理他们的一些统计数据。

  DB0DDAEEDAF7DAF5DB1FDB1DDB20DB1BDAFCDAFBDB1FDB18DB23DB06DB21DB15DB25DB1DDB2EDB36DB43DB59DB32DB28DB2ADB46DB6FDB32DB44DB40DB50DB87DBB0DBA1DBABDBA0DB9ADBA6DBACDBA0DB96DB95DBB7DBCFDBCBDBD6DB9CDBB5DB9DDB9FDBA3DB88DB89DB93DBA5DB9CDBC1DBC1DBC6DBC3DBC9DBB3DBB8DBB6DBC8DBA8DBB6DBA2DB98DBA9DBB9DBDBDBD5DBD9DBC3DB9BDBA2DB84DB83DB7DDB6BDB58DB4EDB42DB16DB0DDB01DB02DAFCDAE9DAE5DAD9DAE2DAB7DA9BDAA6DA9EDAAADAC9DACADAC4DA92DA90DA84DA89DA93DAA9DA8CDA7FDA62DA53DA6EDA 
  

这是HEX文件的摘录，作为一个例子，我希望得到：

发生XX次BDBDBD

发生XX次B93D

是否有办法挖掘文件以生成该输出？

解决方案

当然。使用滑动窗口创建计数（链接是用于Perl的，但它似乎足以理解该算法）。你的模式被命名为 N-gram 。不过，您必须限制最大模式。

I'd like to find patterns and sort them by number of occurrences on an HEX file I have.

I am not looking for some specific pattern, just to make some statistics of the occurrences happening there and sort them.

DB0DDAEEDAF7DAF5DB1FDB1DDB20DB1BDAFCDAFBDB1FDB18DB23DB06DB21DB15DB25DB1DDB2EDB36DB43DB59DB32DB28DB2ADB46DB6FDB32DB44DB40DB50DB87DBB0DBA1DBABDBA0DB9ADBA6DBACDBA0DB96DB95DBB7DBCFDBCBDBD6DB9CDBB5DB9DDB9FDBA3DB88DB89DB93DBA5DB9CDBC1DBC1DBC6DBC3DBC9DBB3DBB8DBB6DBC8DBA8DBB6DBA2DB98DBA9DBB9DBDBDBD5DBD9DBC3DB9BDBA2DB84DB83DB7DDB6BDB58DB4EDB42DB16DB0DDB01DB02DAFCDAE9DAE5DAD9DAE2DAB7DA9BDAA6DA9EDAAADAC9DACADAC4DA92DA90DA84DA89DA93DAA9DA8CDA7FDA62DA53DA6EDA

That's an excerpt of the HEX file, and as an example I'd like to get:

XX occurrences of BDBDBD

XX occurrences of B93D

Is there a way to mine the file to generate that output?

解决方案

Sure. Use a sliding window to create the counts (The link is for Perl, but it seems general enough to understand the algorithm). Your patterns are named N-grams. You will have to limit the maximal pattern, though.

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