- Flipping `exit` to `_start`
- Flipping `welcome_str` to `setvbuf.got`
- Filpping `exit` to `main`
- Flipping `localtime` to onegadget
- Flipping `exit` back to `_start`
- Enjoy shell

https://kileak.github.io/ctf/2019/tghack-flippin/