AES-128 and Integer overflow detected in keyspace of mask

[penguinkeeper]

In your example, you have 32 hexadecimal characters, which makes your mask half the size it should be, which blows it up into the same 3.4e38, which also makes it unsearchable. Even if you have the first 2 bytes, it doesn't matter and is still far, far, far from searchable but you can just replace the "?h"es with your known character, like "b3?h?h?h..."