Let's suppose we have the plaintext, 14/16 char of the key and the first 2 and the last 36 chars of encrypted data (that is 64 char long). What I want is to find the IV. The cipher algorithm is AES (I think 128).
As I said, both the Key and the IV are 16 char long, the plaintext is exactly 32 char long and the cyphertext produced is 64.
What tool / process can I use to find the IV knowing all of this stuff? Note that I don't know the full key, but I have a big part of it, so probably some bruteforce is needed.