Configuration

HawkScan Configuration

HawkScan depends on the stackhawk.yml configuration file. See YAML configuration for more information.

Write the base stackhawk.yml configuration to the current directory.

stackhawk.yml

app:
  applicationId: kkAAAKAW-kAWW-kkAA-WWwW-kAAkkAAAAwWW
  env: Test
  host: http://localhost:port

Configuration Options

HawkScan configuration shape. The stackhawk.yml file follows this structure. A run of HawkScan will use this configuration to inform the scanner how to operate.

hawk

Configuration preferences for HawkScan, independent of the scanned application.

hawk.spider

Configuration block for the application crawling and Discovery Phase aka Spider. See the Scan Discovery page for more details.

hawk.spider.custom

Configuration for custom scan discovery. See the Custom Scan Discovery section for more details.

hawk.spider.har

Configuration for using a HAR file as the discovery for a scan. HAR files often contain urls from many hosts but only URLs matching the app.host or replaceHost will be included in the scan.

hawk.spider.har.file

hawk.spider.har.dir

hawk.scan

Configuration block for HawkScan runtime.

hawk.outboundProxy

Configuration block for a proxy. This enables HawkScan to traffic scanner requests through an outbound network proxy.

hawk.outboundProxy.credentials

Credential details for the outbound proxy behavior.

app

Configuration parameters for the scanned application, independent of the scanner.

app.authentication

Configuration block for application authentication to enable scanning as the provided user of your application. If provided, HawkScan will first attempt to sign into your web application with the provided login credentials. Only after successfully verifying will scanning occur. For more information, see the Authenticated Scanning section.

app.authentication.usernamePassword

Optional configuration specifying a username and password based authentication configuration. Currently POSTing the credentials via FORM or JSON type is supported. Use in conjunction cookieAuthorization or tokenAuthorization to maintain authorized access to your application.

app.authentication.usernamePassword.otherParams

Generic name=value param.

app.authentication.external

Optional configuration block for specifying an externally supplied authorization token, HawkScan will attempt to access a protected path in your web application with the supplied token before scanning. For more information, see the Authenticated Scanning section.

app.authentication.external.values

Configuration for Token Authentication.

app.authentication.external.values.value

Generic name=value param.

app.authentication.script

Configure a custom script for authentication

app.authentication.externalCommand

Optional configuration block allowing HawkScan to run a specified command line process. HawkScan will attempt to access a protected path in your web application with the supplied headers or cookies before scanning. For more information, see the Authenticated Scanning section.

app.authentication.oauth

app.authentication.oauth.credentials

app.authentication.oauth.parameters

app.authentication.tokenExtraction

Token extraction is optional unless you’re using the tokenAuthorization in combination with usernamePassword authentication. This configuration specifies how to extract the authorization token from the authentication response.

app.authentication.cookieAuthorization

An optional configuration specifying if authorization is maintained via a cookie session.

app.authentication.tokenAuthorization

An optional configuration telling HawkScan how to pass the authorization token to your application on each request to maintain authorized access.

app.authentication.sessionScript

Optional configuration block for specifying a custom session management script. To learn more about session scripts, reference the HawkScan Examples repository.

app.authentication.testPath

A configuration specifying how to verify if Scan authentication and authorization is working before running a scan.

An example configuration of app.authentication.testPath:

...
  testPath:
    type: HEADER
    path: /user/profile
    success: ".*200.*"
    requestMethod: POST
    requestBody: '{"feeling": "KaaKaww!"}'
    requestHeaders:
      Content-Type: "application/json"

This uses either success or fail criteria to determine if authorized access is working correctly.

app.graphqlConf

GraphQL scanner parameters. See the StackHawk graphQL configuration docs for more details.

app.graphqlConf.excludeOperations

A GraphQL operation to exclude from the spider by name and type.

app.graphqlConf.customVariables

Custom variable data specific to OpenAPI schemas.

app.openApiConf

OpenApi scanner parameters. See the StackHawk OpenAPI configuration docs for more details.

app.openApiConf.deprecatedCustomVariables

Generic custom variable for different API types.

app.openApiConf.customVariables

Custom variable data specific to OpenAPI schemas.

app.soapConf

SOAP API scanner parameters. See the StackHawk SOAP configuration docs for more details.

app.grpcConf

gRPC API scanner parameters. See the gRPC configuration docs for more details.

app.grpcConf.customVariables

Generic custom variable for different API types.

app.inputVectors

Input vector configuration.

app.inputVectors.injectableParam

app.inputVectors.enabledRpcParam

app.waitForAppTarget

A configuration specifying how to determine if app is up and ready or scanning.

app.redact

Redaction policy of scan logs and stdout when scanning this application.

HawkScan maintains a list of redacted tokens; strings that are sensitive and should be scrubbed preemptively from logs and collected messages. By default, HawkScan redacts app.authentication credentials, and any provided script / discovery credentials.

hawkAddOn

Configuration block for HawkScan add-ons and custom scripts.

hawkAddOn.replacer

Configuration block for the Replacer add-on.

hawkAddOn.replacer.rules

A list of configuration blocks for the Replacer add-on rules. Each configuration block in the list is made up of the following elements. See Configuration Examples for more information.

hawkAddOn.scripts

Configuration block for custom scripts.

hawkAddOn.scripts.vars

Generic name=value param.

tags

Scan tags are name value pairs that represent metadata of the scan, capturing additional state or context around a scan.

Examples could include adding commit SHAs, branch names, or project management issue titles.

Tag names can use any combination of the following characters: a-zA-Z-_, and their values can be any string. Tag entries can also be interpolated from the environment.

ℹ️ NOTE: Tag names beginning with _STACKHAWK are in a reserved tag name space.

The following selection of YAML is an example of how you can configure your stackhawk.yml file to include scan tags:

stackhawk.yml

app:
applicationId: <application-uuid>
env: localhost
host: http://localhost:8080
tags:
- name: category
value: hawksome
- name: Another-Value
value: ${SOMETHING_FROM_ENV:default}
- name: _GIT_COMMIT_SHA
value: ${MY_COMMIT_SHA_ENV:HEAD}
...

hawkAddon.replacerRules.initiators

ReplacerRule Initiators.

hawkAddon.scripts.type

One of the following custom script types : active, authentication, httpsender, passive, proxy, standalone, targeted, session.

hawkAddon.scripts.language

A supported scripting language interpreter for custom scripts.

nameValParam

Generic name=value param.

hawk.config

The hawk.config setting accepts strings that can be accepted and used by Zap plugins as advanced configuration. Because plugins may accept and define their own configuration, this list is not exhaustive or up-to-date, and settings may change between released versions of HawkScan.

This list may improve or change over time.

Environment Variable Configuration

HawkScan also accepts certain environment variables for modifying the behavior of the runtime scanner. The presence of a nonempty value for any of these variables will enable them for the scanner at runtime:

Environment Variables are passed into the docker command line with the -e parameter:

docker run -e SHAWK_DEBUG=true -e API_KEY=hawk.xxxxxxxxxxxxxxxxxxxx.xxxxxxxxxxxxxxxxxxxx --rm -v $(pwd):/hawk:rw -t stackhawk/hawkscan:latest

Examples

Replacer Plugin Configuration

The replacer plugin allows you to either replace or inject headers on each HTTP request.

Example: Inject a New Header

Configure the replacer addOn in the following way to force a new header in every request.

Note that if the header exists in a request it will also be replaced by the replacement value.

Explanation:

• matchString is a string value to set the injected header’s key (e.g. x-requested-with)
• replacement is the injected header’s value (e.g. fetch)
• replaceOnly is set to false to enable header injection

...
hawkAddOn:
  replacer:
    rules:
      - matchString: "x-requested-with"
        replacement: "fetch"
        replaceOnly: false
...

Resulting Request Header:

POST http://localhost:9000/ws HTTP/1.1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:82.0) Gecko/20100101 Firefox/82.0
Pragma: no-cache
Cache-Control: no-cache
Content-Length: 999
Content-Type: text/xml;charset=UTF-8
x-requested-with: fetch
Host: localhost:9000

Example: Replace an Existing Header - Simple

Configure the replacer addOn in the following way to exactly match and replace an existing header in every request.

Explanation:

• matchString is a string value that exactly matches the header text to be replaced
  • In this example, matchString is an exact match of the full header pair with both the header key and value
• replacement is the replacement for matchString
  • The replacement string should include both the replacement header’s key and value if an entire header pair is to be replaced
• replaceOnly set to true to avoid injecting a new header
• isRegex set to false makes this replacement dependent on an exact string match
  • Note: partial matches of a header line will occur if, for example, only the header key is provided in matchString (e.g. User-Agent). In this case, starting at the beginning of the header line, only the matching portion will be replaced. Any text following the match on the line will remain the same.

...
hawkAddOn:
  replacer:
    rules:
      - matchString: "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:82.0) Gecko/20100101 Firefox/82.0"
        replacement: "User-Agent: HawkScan custom User Agent (v9.42)"
        replaceOnly: true
        isRegex: false
...

Resulting Request Header:

POST http://localhost:9000/ws HTTP/1.1
User-Agent: HawkScan custom User Agent (v9.42)
Pragma: no-cache
Cache-Control: no-cache
Content-Length: 999
Content-Type: text/xml;charset=UTF-8
Host: localhost:9000

Example: Replace an Existing Header - Regex

Explanation:

• matchString is a regex value matching the header text to be replaced
  • In this example, User-Agent.* matches the entire header line beginning with User-Agent
• replacement is the replacement for matchString
  • The replacement string will replace everything found within the regex match group
• replaceOnly set to true to avoid injecting a new header
• isRegex sets the matchString as a PCRE regex value rather than a simple string value
  • Note: partial matches of a header line will occur if only part of the header value or the header key is provided in matchString. In this way, any portion of a header line may be by the replacement text.

Full Line Replacement

...
hawkAddOn:
  replacer:
    rules:
      - matchString: "User-Agent.*"
        replacement: "User-Agent: HawkScan custom User Agent (v9.42)"
        replaceOnly: true
        isRegex: true
...

Resulting Request Header:

POST http://localhost:9000/ws HTTP/1.1
User-Agent: HawkScan custom User Agent (v9.42)
Pragma: no-cache
Cache-Control: no-cache
Content-Length: 999
Content-Type: text/xml;charset=UTF-8
Host: localhost:9000

Partial Line Replacement

...
hawkAddOn:
  replacer:
    rules:
      - matchString: "Gecko/20100101.*"
        replacement: "Gecko/99999999 Chrome/99.42"
        replaceOnly: true
        isRegex: true
...

Resulting Request Header:

POST http://localhost:9000/ws HTTP/1.1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:82.0) Gecko/99999999 Chrome/99.42
Pragma: no-cache
Cache-Control: no-cache
Content-Length: 999
Content-Type: text/xml;charset=UTF-8
Host: localhost:9000

Detailed Configuration Example

This is an example full-featured stackhawk.yml file with added inline documentation.

• default denotes the value when not supplied in your YAML file. Defaulted parameters must have a valid value.
• required denotes that the value is required and must be set to enable the feature of the scanner.
• optional denotes that the parameter is optional and may or may not have a default value.

# Application specific configuration
app:
  # An applicationId obtained from the StackHawk Platform.
  applicationId: kkAAAKAW-kAWW-kkAA-WWwW-kAAkkAAAAwWW # (required)
  # The environment for the applicationId defined in the StackHawk Platform.
  env: Development # (required)
  # The url of your application to scan
  # Note: Must use port range 1024..65535 when scanning localhost
  host: ${authority}://${host}:${port} # https://localhost:3000 (required)
  # Regex paths you want excluded entirely from the scan
#  excludePaths: # (optional)
#    # - "/assets/.*" (required)
#    # - "/dont-scan-this-page"
#  # The names of your session tokens aka: cookie names
#  sessionTokens: # (optional)
#    # - "_toy_app_session" (required)
#  # The name of your anti csrf parameter
#  antiCsrfParam: # authenticity_token (optional)
#
#  # Authentication configuration for scanning as a user.
#  # Enabling will force the scanner to scan as an
#  # authenticated user of your app.
#  authentication: # (optional)
#    # A regex to match against http responses to determine if the scan user is
#    # still logged in to your app
#    loggedInIndicator: # "\\QLog out\\E" (required)
#    # A regex to match against http responses to determine if the scan user is
#    # logged out of your app
#    loggedOutIndicator: # "\\QLog in\\E" (required)
#    # Username password based authentication method.
#    usernamePassword: # (optional)
#      # POST authentication credentials as application/x-www-form-urlencoded
#      # Set type to JSON to POST as application/json.
#      type: # FORM (required)
#      # The route to POST credentials to authenticate as a user
#      loginPath: # /login (required)
#      # The route that serves the login form. The anti-csrf parameter
#      # The username field name in your authentication payload.
#      usernameField: # session[email] (required)
#      # The password field name in your authentication payload.
#      passwordField: # session[password] (required)
#      # The username to authenticate as when scanning
#      scanUsername: # ${SCAN_USERNAME} (required)
#      # The password of the scanUsername
#      scanPassword: # ${SCAN_PASSWORD} (required)
#      # returned from a GET request will be extracted from the response.
#      loginPagePath: # /login (optional)
#      # Other request parameters that may be required by your log in payload
#      otherParams: # (optional)
#        # - name: utf8 (required)
#        #   val: "✓" (required)
#        # - name: "session[remember_me]"
#        #   val: "0"
#    # Maintain authorized session via cookie.
#    cookieAuthorization: # (optional)
#      # Names of cookies used to track a users session
#      cookieNames: # (required)
#        # - "_toy_app_session"
#    # A path and criteria for asserting authentication is working correctly.
#    # The path should be a protected route that can only be accesed
#    # by an authenticated user. Before running a scan this path will be
#    # requested to verify authenticated access is working correctly.
#    testPath: # (optional)
#      # Set to BODY to match against response body instead of HEADER.
#      type: # HEADER (default)
#      # Protected path to send GET/POST request validation.
#      path: # /profile (required)
#      # A regex to match against that will indicate a successful authorized
#      # request. Configure fail criteria to match against a failed
#      # authorized request. Example: fail:".*302.*Location.*/login.*"
#      success: # ".*200.*" (required)
#      # The request method for authentication validation.
#      # GET/POST/PUT
#      requestMethod: # GET (default)
#      # The request body for POST/PUT authentication validation.
#      requestBody: # foo=bar&hawk=foo  (optional)
#      # Key/value pairs containing valid arbitrary headers e.g.
#      requestHeaders:  # (optional) 
#        Content-Type: application/json
#    # Externally supplied authorization token.
#    # Use as an alternative to usernamePassword authentication
#    external: # (optional)
#       # A token type external credential.
#       # Set to COOKIE to supply an externally sourced cookie
#       type: # TOKEN (required)
#       # The value of the token passed as an environment variable at runtime.
#       # When type=COOKIE the value format should be <cookie-name>=<cookie-value>
#       value: # ${AUTH_TOKEN} (required)
#    # Describe how to extract your apps authorization token.
#    # This should only be used with tokenAuthorization
#    tokenExtraction:
#       # The type of extraction to use. TOKEN_PATH is the path to the token in
#       # the JSON payload returned from usernamePassword authentication.
#       # Set to HEADER_NAME if your authorization token is returned as a response header.
#       type: # TOKEN_PATH (required)
#       # The path to the token or name of the header.
#       value: # "auth.token" (required)
#    # Use token based authorization instead of cookie based.
#    # Tokens are passed on all requests to maintain authorized access
#    # to your application
#    tokenAuthorization: # (optional)
#      # The way to pass the token on requests. Set to QUERY_PARAM
#      # to pass your token as part of the query string instead of a header.
#      type: # HEADER (required)
#      # The name of the header or query param.
#      value: # Authorization (required)
#      # The token type which will be prepended to your authorization header.
#      # ie: Authorization: Bearer <token>
#      # Leave undefined if not applicable.
#      tokenType: # Bearer <token> (optional)
#  # Path to openapi 2 spec file or inline openapi 2 spec yaml
#  # Note: default '/' == '{app.host}/openapi.json'
#  api: # "/myopenapi.json" # (deprecated) Use app.openApiConf instead
#  # Enable GraphQL support
#  graphqlConf:
#    # GraphQL introspection path [default: /graphql]
#    schemaPath: /
#    # Request method to use for queries [POST|GET]
#    requestMethod: POST
#    # Request method to use for queries [ALL|QUERY|MUTATION]
#    operation: ALL
#    # Set the max length of URIs when generating GET queries
#    uriMaxLength: 4000
#    # Provide the relative path to a JSON formatted schema file [default: None]
#    # Note: also requires schemaPath to be set if not at the standard /graphql endpoint  
#    filePath: schema.json
#    # Set the request parameters for introspection and enumeration
#    introspection:
#      # Number of requests to make at each interval
#      requestsPerCycle: 20
#      # Delay interval for request cycles
#      requestDelay: 1000
#  soapConf:
#    # Host path to the SOAP WSDL, prefixed with a /
#    path: /ws/descriptor.wsdl
#    # Relative path to the SOAP WSDL schema definition file  
#    filePath: descriptor.xsd
#
## Parameters affecting scanner runtime.
#hawk:
#  # Web crawler / spider configuration
#  spider:
#    # Enable the base spider for discovering your app's routes
#    base: true # (default)
#    # Enable the ajax spider for discovering your single page app
#    ajax: false # (default)
#    # Maximum time for spider to discover routes in your app
#    maxDurationMinutes: 2 # (default)
#  # Maximum time to wait for the scanner to start up
#  startupTimeoutMinutes: 5 # (default)
#  # Minimum alert level for a scan fail result:
#  # LOW|MED|HIGH
#  failureThreshold: # high (optional)
#
## Parameters for addOns and custom scripts
#hawkAddOn: # (optional)
#  # Replacer addOn configuration
#  replacer: # (optional)
#    # List of rules for the Replacer addOn
#    rules: # (optional)
#      # Rules begin with _matchString_ key.
#      # - matchString: 'Referer.*' # (required)
#      #   replacement: 'Referer: banana.com' # (required)
#      #   replaceOnly: true
#      #   isRegex: true
#      # - matchString: 'Content-Type'
#      #   replaceOnly: false
#      #   isRegex: false
#      #   replacement: 'application/json'
#  # Custom scripts configurtation
#  scripts: # (optional)
#    # Scripts begin with the _name_ key.
#    # - name: # 'json-auth.js' (required)
#    #   type: # 'authentication' (required)
#    #   path: # ${PWD}/../zap_scripts (required)