The main idea finding the flag is thinking differently to break the logic in binary file.
After pwning into the given machine: nc thekidofarcrania.com 10001, we are asked to play a betting game.
I input Y and proceed to see the game. According to given scenario, I seemed to lose every bet of 100$. So I had to do something differently.
This time I placed a bet of a hefty number like $1000000 which I didn't even possess. I spit out errors. 😟
But the main idea in pwning lies in abnormal thinking and that's where you focus. I tried out negative number this time for the bet like -100000$. I still could play, it shows there was a program logic flaw there.
Now I went wild to give all numbers (which I had to guess below 10) greater than 10. Finally it gave me flag.
Finally the flag becomes:
CTFlearn{d9029a08c55b936cbc9a30_i_wish_real_betting_games_were_like_this!}