It seems both of them can dump the contents of a binary file,
then what's the difference?
It seems both of them can dump the contents of a binary file,
then what's the difference?
There isn't much difference.
Dumpbin is a Microsoft utility for Portable Executables (PE).
Objdump is part of the GNU binutils packages and supports lots of binary formats, including COFF and PE.
Use whichever you prefer. I use objdump because I can inspect PE files from Linux. I'd say use the one that's installed on your system: Dumpbin on Windows, Objdump on the rest.
Dumpbin might give you a slight edge concerning exploring exported symbols and stuff.