There’s a way you can find out yes, but it’s not 100% sure it works.
Use this tool: link
1 - Download the jar and place it in the same folder as your Keystore, then run the second command:
java -jar AndroidKeystoreBrute_v1.05.jar -m 3 -k sua-keystore.jks -d sua-lista-de-palavras.txt
I tested in a store where I had put two words and 3 numbers as password, being the first letter of the password with capital letter.
In my list of words I only provided the two words that were in the password. The uppercase letter for the first is automatically added as well as the numbers. In your list you put the words you think would be in the password (if you think you have a date, put also)
Your list can look like this:
primeiraPalavra
segundaPalavra
01032016
I received the following reply while executing:
Got Password in 12 seconds
As well as the password and alias I used. Let running and good luck!
So, I know I put a random password (hit my head on the keyboard and the result was as a password) in this case, can I put only letters in my list of words? thank you
– Thiago Luiz Domacoski
You can, it is up to you. But to figure out your password can take much longer. You can try method 1, which is in brute force. Then you don’t need to provide any kind of list. But I find it very unlikely that you will find your password that way, at least not in a timely manner.
– Luiz