Blackjack#
This is a simple challenge, no memory corruption needed here, we receive a program witha source code in c that implements blackjack the goal here is to reach 1,000,000 points.
however playing the game manually is way too slow and nighly impossible to reach such goal, however when looking at the source code we see
int betting() //Asks user amount to bet
{
printf("\n\nEnter Bet: $");
scanf("%d", &bet);
if (bet > cash) //If player tries to bet more money than player has
{
printf("\nYou cannot bet more money than you have.");
printf("\nEnter Bet: ");
scanf("%d", &bet);
return bet;
}
else return bet;
}
There is no check for negative values , and in the main game loop there is this code snippet
if(p>21) //If player total is over 21, loss
{
printf("\nWoah Buddy, You Went WAY over.\n");
loss = loss+1;
cash = cash - bet;
printf("\nYou have %d Wins and %d Losses. Awesome!\n", won, loss);
dealer_total=0;
askover();
}
So if we bet a negative value larger than 1,000,000 and we lose we can win instantly because cash - (-100000000) is cash + 100000000 which is exactly what we need
