ZAP - Scan Hooks

ZAP - Scan Hooks

Scan Hooks

To make it easy to make little tweaks here and there a hook system is in place to help you. It enables you to override or modify behaviour of the script components instead of having to write a new script.

Use Cases

Modifying Args
For the AJAX crawler you may want to target a suburl with a specific hash (http://example.com vs http://example.com/#/dashboard). You can use the zap_ajax_spider hook to intercept the arguments and modify them.

Running Scripts
There may be some standalone scripts that you want to run before crawling and scanning. You can use the hook zap_started to run some scripts before the rest of the scan runs.

Changing Configs
For some applications, there are a number of active scan scanners that you may want to disable that are not applicable for that application. Configuring your policy before the active scan using zap_active_scan hook can ensure you only run the tests you want to run.

Example

Define your hooks in a python file my-hooks.py

You define all the hooks you want to integrate with using python methods that correspond with the name of the hook. By default, ZAP scans will load hooks defined in ~/.zap_hooks.py or you may specify the hooks location using a command line flag --hook=my-hooks.py.

# vim my-hooks.py
# Change the zap_ajax_spider target to hit dashboard hash 
# Change the crawl_depth to 2
def zap_ajax_spider(zap, target, max_time):
  zap.ajaxSpider.set_option_max_crawl_depth(2)
  return zap, target + '#/dashboard', max_time

Run scan with hook flag

# Run baseline directly
zap-baseline.py -t https://example.com --hook=my-hooks.py

# or using Docker 
docker run -v $(pwd):/zap/wrk/:rw -t owasp/zap2docker-stable zap-baseline.py \
    -t https://www.example.com -g gen.conf -r testreport.html --hook=/zap/wrk/my-hooks.py

Note that $(pwd) is only supported on Linux and MacOS - on Windows you will need to replace this with the full current working directory.

List of Hooks

  • cli_opts(opts)
  • zap_started(zap, target)
  • importing_openapi(target_url, target_file)
  • importing_soap(target_url, target_file)
  • load_config(config, config_dict, config_msg, out_of_scope_dict)
  • print_rules_wrap(count, inprog_count)
  • start_zap(port, extra_zap_params)
  • start_docker_zap(docker_image, port, extra_zap_params, mount_dir)
  • start_docker_zap_wrap(cid)
  • zap_access_target(zap, target)
  • zap_spider(zap, target)
  • zap_spider_wrap(unused)
  • zap_ajax_spider(zap, target, max_time)
  • zap_ajax_spider_wrap(unused)
  • zap_active_scan(zap, target, policy)
  • zap_active_scan_wrap(unused)
  • zap_get_alerts(zap, baseurl, blacklist, out_of_scope_dict)
  • zap_get_alerts_wrap(alert_dict)
  • zap_import_context(zap, context_file)
  • zap_import_context_wrap(context_id)
  • zap_pre_shutdown(zap)
  • pre_exit(fail_count, warn_count, pass_count)