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mitm-scripts

A collection of some handy mitmproxy inline scripts.

Table of Contents

Precondition

  1. Install mitmproxy

  2. Configure client browser or device: configure proxy settings and install CA on client.

List of Scripts

All the scripts above can be used with mitmproxy and mitmdump command:

$ mitmproxy -s <script-name>.py

OR

$ mitmdump -s <script-name>.py

mitm-rewrite

./mitm-rewrite.py can return mock JSON response for certain target URLs.

  1. Run mitmdump:
$ mitmdump -s mitm-rewrite.py
  1. Check rewrite-router.yaml, to link response JSON file, for e.g:
http://example.com/pass: test_pass
http://example.com/fail: test_fail

It means that the response of "http://exmaple.com/pass" will be overwritten by the content in ./response/test_pass.json file and the response of "http://exmaple.com/fail" will be overwritten by the content in ./response/test_fail.json file.

  1. Edit response JSON file to put mock data you want:
{
  "status": 200,
  "header": { ... },
  "content": ...
}
  • status: http status code, an INT number
  • header: http response headers
  • content: response body

The changes in router yaml file and json response files will be applied on the fly, no need to restart proxy. Here is an example how it looks like:

mitm-rewrite-example

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mitm-replace

./mitm-replace.py can replace the specific string to another one. replace-router.yaml is used to link URL and yaml file in response folder. In the response yaml file, the matching string and result strings can be defined as a pair. Don't forget to uncomment URLs in replace-router.yaml and make it work on the fly!

$ mitmdump -s mitm-replace.py

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mitm-redirect-host

./mitm-redirect-host.py can redirect the request host of URL request to another host. The matching URL and redirect host can be defined in redirect-requenst.yaml. Attention: only the host part of request URL will be replaced.

$ mitmdump -s mitm-redirect-host.py

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mitm-redirect-url

./mitm-redirect-url.py can redirect the whole request to another URL. The matching URL and redirect URL can be defined in redirect-request.yaml.

$ mitmdump -s mitm-redirect-url.py

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mitm-delay-request

./mitm-delay-request.py can delay HTTP/HTTPS request time and response time, in order to simulate the slow network. To configure matching URL and delay time, edit delay-request.yaml.

$ mitmdump -s mitm-delay-request.py

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mitm-kill-request

./mitm-kill-request.py can kill all matching requests. The matching request methods and URls can be defined in kill-request.yaml.

$ mitmdump -s mitm-kill-request.py

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mitm-show-header

./mitm-show-header.py can print out matched request header and response header, with its value. The matching URL and header can be defined in show-header.yaml.

$ mitmdump -s mitm-show-header.py | grep '>>\|->'

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mitm-check-analytics

./mitm-check-analytics.py can display real-time analytics key and value, in order to help checking analytics efficiently. To configure URL and keywords, edit check-analytics.yaml.

  1. Run mitmdump:
$ mitmdump -s mitm-check_analytics.py
  1. Visit target web page in clients: browsers or apps. The matched analytics keyword and value will show up in terminal.

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mitm-dump-curl

./mitm-dump-curl can find matching request URL and dump the request to a file in as cURL format. The matching URL and dump folder can be defined in dump-curl.yaml.

$ mitmdump -s mitm-dump-curl.py

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mitm-record

./mitm-record.py can save matching request details (request headers, request body, response headers and response body) to a specific file. The matching URl and dump folder can be defined in record-request.yaml.

$ mitmdump -s mitm-record.py

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mitm-random-outage

./mitm-random-outage.py can simulate sever outage and return 503 code. It will pick randomly the requests to make it 503. The percentage of outage can be changed as the variable percentage inside the script.

$ mitmdump -s mitm-random-outage.py

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