CLI：在地址处写入字节（hexedit /从命令行修改二进制文件） [英] CLI: Write byte at address (hexedit/modify binary from the command line)

问题描述

是否有任何直接的方法从命令行修改二进制文件？
假设我知道我的二进制文件包含1234abcd，我想将其更改为12FFabcd或FFFFabcd，或者甚至可以使用FF34FFabc0（您会明白）： - ）

如何在不使用任何特殊用途的工具如 http://stahlworks.com/ dev / swiss-file-knife.html 或类似的文件。

只用标准linux工具就可以从命令行执行它。 p>

或者，甚至可能更好，而不是搜索十六进制字符串，我想直接在偏移量0x10000处写FF，在偏移量为0x100001的位置处写入FF。

任何想法？

谢谢！

PS：如下所示：

它应该可以编写脚本并直接从命令行运行。我正在寻找类似binary-which-is-in-the-distro --write AB --at-offset 100000 --file thebinary.bin的东西。我确信它可以使用dd，但我无法将自己的头部包裹在手册页中。

解决方案

  printf'\x31\xc0\xc3'| dd of = test_blob bs = 1 seek = 100 count = 3 conv = notrunc 
  

p>

• of |文件修补


• bs |请每次1个字节


• 搜寻 |转到位置100（十进制）
  
• conv = notrunc |不要在编辑后截断输出（默认为dd）

一个Josh寻找另一个;）

>

Is there any straightforward way to modify a binary from the commandline? Let's say I know that my binary contains 1234abcd and i want to change it to 12FFabcd or FFFFabcd or maybe even FF34FFabc0 (you get the idea) :-)

How might I achieve that without using any special purpose tools like http://stahlworks.com/dev/swiss-file-knife.html or similar.

It would be great to do it just from the commandline with only standard linux tools.

Or maybe even better instead for searching for the hex string i want to replace directly writing FF at Offset 0x10000, 12 at Offset 0x100001 and so on.

Any idea?

Thanks in advance!

P.S.: I should add the following:

It should be scriptable and run directly from the commandline. I am looking for something like "binary-which-is-included-in-the-distro --write AB --at-offset 100000 --file thebinary.bin". I am quite sure that it is possible with "dd", but I wasn't able to wrap my head around the man page.

解决方案

printf '\x31\xc0\xc3' | dd of=test_blob bs=1 seek=100 count=3 conv=notrunc 

dd arguments:

• of | file to patch
• bs | 1 byte at a time please
• seek | go to position 100 (decimal)
• conv=notrunc | don't truncate the output after the edit (which dd does by default)

One Josh looking out for another ;)

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