Re: Is the memory map of a process different when executed in GDB?
"Kristian Erik Hermansen" <[email protected]> Tue, 23 Sep 2008 14:36:47 -0700
| Newsgroups | gmane.comp.security.vulnerabilities |
|---|---|
| Message-ID | <[email protected]> |
On Tue, Sep 23, 2008 at 3:43 AM, Florencio Cano <[email protected]> wrote: > run it inside GDB. Does GDB alter the memory map of a process when > executed inside it? In which way? Where I can read info about this? Yes, your offsets will differ. Put a break at start of main(), recompile, and use something like memfetch | hexdump -C to see... http://lcamtuf.coredump.cx/soft/memfetch.tgz You must also remember that newer Linux distros include many security features that randomize offsets and protect against other hackery. Not that you can't get around them given enough information (like a memory peek), but you should know about them. All of this stuff is well documented on places like milw0rm. Regards... -- Kristian Erik Hermansen http://friendfeed.com/khermans