soal_pwn_ksl_seleksi/service-diary/buffer64.c

#include <stdio.h>
#include <string.h>
#include <limits.h>
 
void not_even_called(){
 printf("\nwelcome garuda muda\n");
 system("/bin/sh");
}

void tulisan(){
puts("██████╗ ██╗ █████╗ ██████╗ ██╗   ██╗    ███████╗███████╗██████╗ ██╗   ██╗██╗ ██████╗███████╗");
puts("██╔══██╗██║██╔══██╗██╔══██╗╚██╗ ██╔╝    ██╔════╝██╔════╝██╔══██╗██║   ██║██║██╔════╝██╔════╝");
puts("██║  ██║██║███████║██████╔╝ ╚████╔╝     ███████╗█████╗  ██████╔╝██║   ██║██║██║     █████╗  ");
puts("██║  ██║██║██╔══██║██╔══██╗  ╚██╔╝      ╚════██║██╔══╝  ██╔══██╗╚██╗ ██╔╝██║██║     ██╔══╝  ");
puts("██████╔╝██║██║  ██║██║  ██║   ██║       ███████║███████╗██║  ██║ ╚████╔╝ ██║╚██████╗███████╗");
puts("╚═════╝ ╚═╝╚═╝  ╚═╝╚═╝  ╚═╝   ╚═╝       ╚══════╝╚══════╝╚═╝  ╚═╝  ╚═══╝  ╚═╝ ╚═════╝╚══════╝\n");
}

int main()
{
 char a[4];
 int b;
 char c[64];

 strcpy(a,"KSL");
 b = 14045;

 tulisan();
 printf("Welcome to Diary Application \n");
 printf("write something : ");
 gets(c);
 if(strlen(c) > 20){
   printf("karakter gak boleh lebih dari 20\n");
 } else{
   if(b == 0x67616c66) not_even_called();
   else printf("isi diary kamu : %s\n",c);
 }
 exit(0);
}