$ checksec ./chall
Warning: _curses.error: setupterm: could not find terminfo database
Terminal features will not be available. Consider setting TERM variable to your current terminal name (or xterm).
[*] '/home/peloeil/src/simpleoverwrite/chall'
Arch: amd64-64-little
RELRO: Partial RELRO
Stack: No canary found
NX: NX enabled
PIE: No PIE (0x400000)
本来は最後の5行は色がついて表示されるはず。上2つのメッセージを解消すれば色が付きそう。