level00: done

level01: done

level00/ressources/exploit

@@ -0,0 +1 @@
+(echo 5276; cat) | ./level00

level00/source.c

@@ -0,0 +1,20 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(void)
+{
+	int buf[4];
+
+	puts("***********************************");
+	puts("* \t     -Level00 -\t\t  *");
+	puts("***********************************");
+	printf("Password:");
+	scanf("%d", buf);
+	if (buf[0] != 5276) {
+		puts("\nInvalid Password!");
+	} else {
+		puts("\nAuthenticated!");
+		system("/bin/sh");
+	}
+	return buf[0] != 5276;
+}

level00/walkthrough

@@ -0,0 +1,8 @@
+# Level00
+
+Using ghidra, we can decompile the code and see that it calls `scanf()` on an int buffer.
+It will then compare its value to 5276 and opens a shell if the value matches.
+All we have to do is input that value.
+
+Here is the command:
+`(echo 5276; cat) | ./level00`