macos 如何从 Mac 中的二进制文件中提取硬编码字符串？
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How to extract hardcoded strings from a binary in Mac?
提问by radj
Is there API available in any language that can run on a Mac (Perl/Python/Cocoa/etc) or command line tools you can use to load a binary (app/bundle/framework/etc) and extract the hard-coded strings used in the code?
是否有可以在 Mac（Perl/Python/Cocoa/etc）上运行的任何语言的 API 或可用于加载二进制文件（app/bundle/framework/etc）并提取使用的硬编码字符串的命令行工具在代码中？
The reason behind is we want to check if there are any hard-coded paths in our compiled binary.
背后的原因是我们想检查我们编译的二进制文件中是否有任何硬编码的路径。
回答by Paul R
Yes, you can just use the stringscommand line tool:
是的，您可以只使用strings命令行工具：
$ man strings
NAME
strings - find the printable strings in a object, or other binary, file
SYNOPSIS
strings [ - ] [ -a ] [ -o ] [ -t format ] [ -number ] [ -n number ] [--] [file ...]
DESCRIPTION
Strings looks for ASCII strings in a binary file or standard input. Strings is useful for identifying random object files and many other things. A string
is any sequence of 4 (the default) or more printing characters ending with a newline or a null. Unless the - flag is given, strings looks in all sections
of the object files except the (__TEXT,__text) section. If no files are specified standard input is read.
The file arguments may be of the form libx.a(foo.o), to request information about only that object file and not the entire library. (Typically this argu-
ment must be quoted, ``libx.a(foo.o)'', to get it past the shell.)
The options to strings(1) are:
-a This option causes strings to look for strings in all sections of the object file (including the (__TEXT,__text) section.
- This option causes strings to look for strings in all bytes of the files (the default for non-object files).
-- This option causes strings to treat all the following arguments as files.
-o Preceded each string by its offset in the file (in decimal).
-t format
Write each string preceded by its byte offset from the start of the file. The format shall be dependent on the single character used as the format
option-argument:
d The offset shall be written in decimal.
o The offset shall be written in octal.
x The offset shall be written in hexadecimal.
-number
The decimal number is used as the minimum string length rather than the default of 4.
-n number
Specify the minimum string length, where the number argument is a positive decimal integer. The default shall be 4.
-arch arch_type
Specifies the architecture, arch_type, of the file for strings(1) to operate on when the file is a universal file. (See arch(3) for the currently
know arch_types.) The arch_type can be "all" to operate on all architectures in the file, which is the default.
SEE ALSO
od(1)
BUGS
The algorithm for identifying strings is extremely primitive.
Apple Computer, Inc. September 11, 2006 STRINGS(1)
