How to configure SSL certificates with Charles Web Proxy and the latest Android Emulator on Windows

Question

I would like to use Charles web proxy to work with the Android emulator in Windows   I ve successfully set up charles and have started the emulator with the command line   emulator -http-proxy 127 0 0 1 8888  NexusOne   I can see traffic coming from the android emulator in Charles  but the problem is that I m developing against a live API which uses SSL and I m not sure how to configure Charles to let me play about the the data which is sent and received   I m aware of two areas where SSL is set up in Charles  Proxy -  Proxy Settings -  SSL and Proxy -  Client SSL Certificates  but I can t find any decent documentation which has let me do what I want to do   Has anyone experience with Charles  or certificates in general  who can explain how to achieve this   Maybe a primer on certificates would be good too  as I seem to be lacking knowledge as to why this is so difficult

User · Answer

For what it s worth here are the step by step instructions for doing this in an Android device  Should be the same for iOS    Open Charles Go to Proxy   Proxy Settings   SSL Check    Enable SSL Proxying    Select    Add location    and enter the host name and port  if needed  Click ok and make sure the option is checked Download the Charles cert from here  Charles cert   Send that file to yourself in an email  Open the email on your device and select the cert In    Name the certificate    enter whatever you want Click OK and you should get a message that the certificate was installed   You should then be able to see the SSL files in Charles  If you want to intercept and change the values you can use the   Map Local  tool which is really awesome    In Charles go to Tools   Map Local  Select  Add entry  Enter the values for the file you want to replace In    Local path    select the file you want the app to load instead Click OK Make sure the entry is selected and click OK Run your app You should see in    Notes    that your file loads instead of the live one

User · Answer

The certification installation step whatever mentioned here is correct https   stackoverflow com a 35200795 865220  But if you are having a pain of individually having to enable SSL Proxy for each and every new url like me  then to enable for all host names just enter   into the host and port names list in the SSL Proxying Settings like this

User · Answer

To remotely capture http or https traffic with charles you will need to do the following   HOST -  Machine running Charles and hosting the proxy CLIENT     User   s machine generating the traffic you will capture  Host Machine   Install fully licensed charles version Proxy -  Proxy Settings -  check    Enable Transparent HTTP Proxying    Proxy -  SSL Proxying Settings -  check    enable SSL Proxying    Proxy -  SSL Proxying Settings -  click Add button and input   in both fields Proxy -  Access Control Settings -  Add your local subnet  ex  192 168 2 0 24  to authorize all machines on your local network to use the proxy from another machine It might be advisable to set up the    auto save tool    in charles  this will auto save and rotate the charles logs        Client Machine    Install and permanently accept trust the charles SSL certificate http   www charlesproxy com documentation using-charles ssl-certificates  Configure IE  Firefox  and Chrome to use the socket charles is hosting the proxy on  ex  192 168 1 100 8888    When I tested this out I picked up two lines of a Facebook HTTPS chat  one was a line TO someone  and the other FROM   you can also capture android emulator traffic this way if you start the emulator with   emulator -avd  lt avd name gt  -http-proxy http   local ip 8888    Where LOCAL IP is the IP address of your computer  not 127 0 0 1 as that is the IP address of the emulated phone   Source  http   brakertech com capture-https-traffic-remotely-with-charles

User · Answer

You should also click on  Install Charles CA SSL Certificates    from the Charles Help menu  See more detailed instructions at http   blog noodlewerk com general tutorial-using-charles-proxy-to-debug-https-communication-between-server-and-ios-apps

User · Answer

Things have changed a little in the way Charles provides HTTPS proxying    First the certificates installation options have been moved to the help menu   Help - gt  SSL Proxying - gt  Install Charles Root Certificate Help - gt  SSL Proxying - gt  Install Charles Root Certificate in iOS Simulators     Second  starting in iOS 9 you must provide a NSAppTransportSecurity option in your Info plist and if you want Charles to work properly as a man in the middle  you must add     lt key gt NSTemporaryExceptionAllowsInsecureHTTPLoads lt  key gt   lt true  gt    as part of the your domains see full example    lt key gt NSExceptionDomains lt  key gt       lt dict gt           lt key gt yourdomain com lt  key gt           lt dict gt               lt key gt NSIncludesSubdomains lt  key gt               lt true  gt               lt key gt NSTemporaryExceptionAllowsInsecureHTTPLoads lt  key gt               lt true  gt               lt key gt NSTemporaryExceptionMinimumTLSVersion lt  key gt               lt string gt TLSv1 1 lt  string gt           lt  dict gt    The reason being  I guess  that Charles at some point communicates in clear http after acting as the man in the middle https server   Last step is to activate SSL Proxying for this domain in Charles  right click on domain and select Enable SSL Proxying

User · Answer

These things helped me    Go to proxy -  SSL proxy settings -  Add Add your site name here and give port number as 8888       Right click on your site name on the left panel and choose  Enable SSL Proxying     Hope this helps someone out there

User · Answer

What worked for me - should really be moved to iPhone   Charles   Enable transparent Http proxying Enable SSL proxying Right click on incoming request and select SSL proxying   Mac   Download Charles CA Certificate bundle http   www charlesproxy com ssl zip Email yourself charles-proxy-ssl-proxying-certificate crt   iPhone   Enable http proxy for Charles on port 8888 Select and install email attachment  yes trust it    Voila  you can now view encrypted traffic from the domain added in the SSL proxying

User · Answer

In Charles  go to Proxy  Proxy Settings and select the SSL tab   Add your host to the list of Locations     For example  if your secure call is going to https   secure example com  you can enter secure example com  or   example com   Once the above is in place  you may need to right-click on the call in the main Charles window and select the SSL Proxying option   Hope this helps

[android] How to configure SSL certificates with Charles Web Proxy and the latest Android Emulator on Windows?

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