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Tuesday, December 13, 2016

[Pwnable.kr/Toddler's Bottle] BlackJack ( Solved 16.12.13 )


# Problem.

  : This problem is blackjack game. If player earn more than $1 million through BlackJack game, Player can see the flag.


# How To solve.

 : When I first solved this problem, I solved it without reference to the source code. The vulnerability of this program is that if player enter more money than player own, player will be prompted to re-enter it, but only once. So, when player re-enter more than $1 million and win the game, player can easily see the flag. I did the following.

And, If player win this game, player can check the flag as follows.




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