format string 2

format_string_2/vuln.c

@@ -0,0 +1,35 @@
+#include <stdio.h>
+
+int sus = 0x21737573;
+
+int main() {
+  char buf[1024];
+  char flag[64];
+
+
+  printf("You don't have what it takes. Only a true wizard could change my suspicions. What do you have to say?\n");
+  fflush(stdout);
+  scanf("%1024s", buf);
+  printf("Here's your input: ");
+  printf(buf);
+  printf("\n");
+  fflush(stdout);
+
+  if (sus == 0x67616c66) {
+    printf("I have NO clue how you did that, you must be a wizard. Here you go...\n");
+
+    // Read in the flag
+    FILE *fd = fopen("flag.txt", "r");
+    fgets(flag, 64, fd);
+
+    printf("%s", flag);
+    fflush(stdout);
+  }
+  else {
+    printf("sus = 0x%x\n", sus);
+    printf("You can do better!\n");
+    fflush(stdout);
+  }
+
+  return 0;
+}