Jenkins

Jenkins Credentials Decryptor

if you have the Jenkins configuration files, which contain credentials.xml, config.xml, master.key, and hudson.util.secret. then you can decrypt the password from that using this https://github.com/hoto/jenkins-credentials-decryptor

./jenkins-credentials-decryptor -c ./jenkins_configuration/jobs/build/config.xml -m ./jenkins_configuration/secrets/master.key -s ./jenkins_configuration/secrets/hudson.util.Secret