buffer overflow - overwrite variable in stack then pass the check

void vulnerable(void){
  char local_30 [16];
  int local_20;
  int local_1c;
  int local_18;
  int local_14;
  int local_10;
  
  puts("Hey I heard you are searching for flags! Well I\'ve got one. :)");
  puts("Here you can have part of it!");
  puts("auctf{");
  puts("\nSorry that\'s all I got!\n");
  local_10 = 0;
  local_14 = 10;
  local_18 = 0x14;
  local_1c = 0x14;
  local_20 = 2;
  fgets(local_30,0x24,stdin);
  if ((((local_10 == 0x1337) && (local_14 < -0x14)) && (local_1c != 0x14)) &&
     ((local_18 == 0x667463 && (local_20 == 0x2a)))) {
    print_flag();
  }
  return;
}

Details

Original writeup (http://taqini.space/2020/04/05/AUCTF-2020-pwn-wp/#Thanksgiving-Dinner).