shared_lib_symbol

-Bsymbolic usage
bsymbolic-functions
dlopen() with RTLD_GLOBAL to add all symbols to global symbol search scope. RTLD_DEEPBIND flag, which makes the library prefer its own symbols in spite of the global ones. It does a job similar to the -Bsymbolic linker flag, but from the loading side
redirect function in shared lib by using PLT/GOT
PLT/GOT intro
hack & replace GOT address

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