如何使静态链接的ELF文件加载LD_PRELOAD .so [英] How to make static linked ELF file to load LD_PRELOAD .so

问题描述

我有静态链接的二进制文件(ELF文件)，没有动态段，.dymsym节，并且不执行LD_PRELOAD命令等. 我该如何创建假的虚拟动态段来激活动态加载程序并执行LD_PRELOAD命令?

I have static linked binary (ELF file) it doesn't have dynamic segment, .dymsym sections and it doesn't perform LD_PRELOAD command and etc. How could i create fake dummy dynamic segment to activate dynamic loader and perform LD_PRELOAD command?

推荐答案

我如何创建假的虚拟动态段来激活动态加载程序并执行LD_PRELOAD命令?

How could i create fake dummy dynamic segment to activate dynamic loader and perform LD_PRELOAD command?

你不能.

即使可以，使LD_PRELOAD预先加载某些内容也会 没用:通常您希望在LD_PRELOAD ed库中插入一些符号，但这要求这些符号必须<主要二进制文件中的em> unresolved ，或者至少已导出到其动态符号表中.静态链接的可执行文件没有任何未解析的符号，也没有动态的符号表.

Even if you could, getting LD_PRELOAD to preload something would still be useless: usually you want to interpose some symbols in your LD_PRELOADed library, but that requires these symbols to be unresolved in the main binary, or at least exported in its dynamic symbol table. A statically linked executable doesn't have any unresolved symbols, nor a dynamic symbol table by definition.

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