Lost Keystore password [duplicate]

Question

I want to update my Application to playstore and I lost my keystore password.Now I am trying to create a new one . Will there be any problem if I build APK with another keystore password ?

Answer 1

As @CRUSADER said, Android Keystore Password Recovery might work for you. I could retrieve my password with it. Here is how to do that. I was on Windows 7.

Run the following command,

java -jar AndroidKeystoreBrute_v1.05.jar

Then you will get the following guide,

AndroidKeystorePasswordRecoveryTool by M@xiking

Version 1.03
There are 3 Methods to recover the key for your Keystore:

1: simply bruteforce - good luck
2: dictionary attack - your password has to be in the dictionary
3: smart dictionary attack - you specify a dictionary with regular pieces you use in your passwords. Numbers are automat
icly added and first letter will tested uppercase and lowercase

args:
-m <1..3> Method
-k <path>  path to your keystore
-d <path> dictionary (for method 2 and 3)
-w saves the certificate in a new Keystore with same passwort than key

-start <String> sets start String of the word (for method 1)

-p use common replacements like '@' for 'a'(for method 3) WARNING - very slow!!

-h prints this helpscreen

Max memory: 247M

I've used method 2 because I had some guess of my password. I typed the following command,

java -jar AndroidKeystoreBrute_v1.05.jar -m 2 -k android.keystore -d dict.txt

In case you might wonder, my dict.txt was something like this,

gussedpassword1
gussedpassword2
gussedpassword3

I could successfully retrieve my password and alias.