There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty"for details. This GDB was configured as "x86_64-linux-gnu". Type "show configuration"for configuration details. For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type"help". Type "apropos word" to search for commands related to "word"... pwndbg: loaded 175 commands. Type pwndbg [filter] for a list. pwndbg: created $rebase, $ida gdb functions (can be used with print/break) Reading symbols from hacknote...(no debugging symbols found)...done. pwndbg> r Starting program: /root/CTF-PWN/UAF/hacknote ---------------------- HackNote ---------------------- 1. Add note 2. Delete note 3. Print note 4. Exit ---------------------- Your choice :1 Note size :20 Content :note1 Success ! ---------------------- HackNote ---------------------- 1. Add note 2. Delete note 3. Print note 4. Exit ---------------------- Your choice :1 Note size :30 Content :note2 Success ! ----------------------