The question asked here is quite outdated and vague, especially considering the changes with android 7.0+ and ssl. I've primarily used burp proxy to see the traffic going in and out of my device. My android is rooted and I've exported and installed burp suites root ca certificate according to this tutorial. This allows me to see httpS and wsS traffic decrypted in clear text. The only issue with burp suite is http and websocket are the only protocols it natively supports. I have an android application that uses tcp socket and ssl. I want to use Wireshark to inspect that data. I've heard suggestions on how I might go about doing this. One of them is use something called tcpdump but I'm unfamilier and confused with that and other methods and I need to make sure I can decrypt the ssl.
You can redirect the traffic from the rooted android device to a transparent TLS proxy, which decrypts and re-encrypts the TLS traffic while leaving the WebSocket data untouched. Both PolarProxy (our tool) and SSLsplit can export the proxied traffic to a PCAP file in decrypted form. This allows you to inspect the decrypted WebSocket traffic in Wireshark without having to bother with key log files.
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I can intercept packets on a device with root with tcpdump and netcat, but I encounter problems with decrypting TLS packets with wireshark.
Is there a way in my android device to share decryption keys when an https connection is established? Do you know any apps?
Is there anything that allows me to create SSLKEYLOGFILE in android like in windows? Or something that allows me to decrypt the app data of my device. I've already tried frida and proxy for SSL pinning but it doesn't work on some apps.
Thank you so much for the help and I'm sorry for my English
the older pre-3.10 versions of Charles allow users to install a root certificate on their phones to help apps to allow SSL connections but the newer version has removed this feature. I am not sure if this is the reason why I wasn't able to POST successfully to the native app server.
For example I will get messages like SSLHandshake: Remote host closed connection during handshake
I suspect the root certificate is for the app on my phone to accept SSL connections from the server, but not for me to POST messages to the server.
Anyways, is there a method for me to set up SSL connections to POST?
P.S. I have added the server's url in my SSL list, and also enabled "transparent HTTP proxy." (I noticed that is not HTTPS, so perhaps Charles doesn't have transparent HTTPS feature?)
Update: I tried using mitmproxy and it worked. It looks like installing cer file to the phone is the right way to go but I am wondering why Charles removed this feature. I also think I might have missed something in the documentation. Perhaps Charles did generate a cer file in my system for me to download to the phone. If so, where can I find this file?
Yeah, all you need to do is to click help on the menu bar and then select save SSL or install SSL on mobile device and then browse to the url it gives you on your mobile browser to download the certificate.
I have enabled HTTPS in Fiddler4 options, and it does can capture HTTPS communications from most Android Apps on my machine(With Android simulator, via WIFI proxy settings).
But for some Apps it always failed. e.g. Kayak.
It always says "Oops! There was a problem connecting to the internet. Please try again later.".
I notice Kayak App uses TLS 1.0(See following screenshot, it's from Microsoft Network Monitor 3.4), i think maybe this has something to do with it.
I also tried to set the protocols into "tls1.0"(See following screenshot), but has no effect.
Appreciate your ideas.
Update Further investigation revealed that some Android applications will not accept wildcards inside certificates' SubjectCN field if that field is encoded as BMPString. The makecert generator uses BMPString, so you can either untick the Use wildcards box or switch to the CertEnroll generator inside Tools > Fiddler Options > HTTPS > Certificates Generated By.
The text below is still applicable for apps which implement pinning.
TLS1.0 is perhaps the best-supported HTTPS protocol in Fiddler. You haven't shown what's in Fiddler's Web Sessions list or Log tab in the event of the failure, but my guess is that the Web Sessions list probably shows just a CONNECT and the Log tab has something like:
!SecureClientPipeDirect failed: System.IO.IOException Authentication
failed because the remote party has closed the transport stream. for
pipe (CN=*.kayak.com, O=DO_NOT_TRUST, OU=Created by
http://www.fiddler2.com)
Is that correct? If so, the most likely explanation is that the Android app in question has enabled certificate pinning.
From the Fiddler book:
Certificate Pinning
A very small number of HTTPS client applications support a feature
known as “Certificate Pinning” whereby the client application is
hardcoded to accept only one specific certificate. Even if the
connection uses a certificate that chains to a root that is otherwise
fully-trusted by the operating system, such applications will refuse
to accept an unexpected certificate.
To date, some Twitter and
Dropbox apps include this feature, and Windows 8 Metro apps may opt-in
to requiring specific certificates rather than relying upon the
system’s Trusted Root store. Firefox’s automatic browser update
feature will silently fail when Fiddler is decrypting its traffic. The
Microsoft Security toolkit named EMET can enable pinning in any
application for certain “high-value” sites (including Windows Live).
The Chrome browser supports pinning, but it exempts locally-trusted
roots like Fiddler’s.
When a Certificate-Pinned application performs a
HTTPS handshake through a CONNECT tunnel to Fiddler, it will examine
the response’s certificate and refuse to send any further requests
when it discovers the Fiddler-generated certificate. Unfortunately,
there is no general-purpose workaround to resolve this; the best you
can do is to exempt that application’s traffic from decryption using
the HTTPS tab or by setting the x-no-decrypt Session flag on the
CONNECT tunnel. The flag will prevent Fiddler from decrypting the
traffic in the tunnel and it will flow through Fiddler uninterrupted.
A very small number of HTTPS client applications support a feature
known as “Certificate Pinning” whereby the client application is
hardcoded to accept only one specific certificate. Even if the
connection uses a certificate that chains to a root that is otherwise
fully-trusted by the operating system, such applications will refuse
to accept an unexpected certificate. To date, some Twitter and
Dropbox apps include this feature, and Windows 8 Metro apps may opt-in
to requiring specific certificates rather than relying upon the
system’s Trusted Root store. Firefox’s automatic browser update
feature will silently fail when Fiddler is decrypting its traffic. The
Microsoft Security toolkit named EMET can enable pinning in any
application for certain “high-value” sites (including Windows Live).
The Chrome browser supports pinning, but it exempts locally-trusted
roots like Fiddler’s. When a Certificate-Pinned application performs a
HTTPS handshake through a CONNECT tunnel to Fiddler, it will examine
the response’s certificate and refuse to send any further requests
when it discovers the Fiddler-generated certificate.
Unfortunately,
there is no general-purpose workaround to resolve this; the best you
can do is to exempt that application’s traffic from decryption using
the HTTPS tab or by setting the x-no-decrypt Session flag on the
CONNECT tunnel. The flag will prevent Fiddler from decrypting the
traffic in the tunnel and it will flow through Fiddler uninterrupted.
If you're very serious about circumventing pinning, you can jailbreak the device and use any of a number of 3rd party toolkits to disable the pinning code.
I want to monitor HTTPS traffic from my application to remote server. I am trying to follow this instruction and it works for HTTP (without s), but not for HTTPS.
What is wrong? Should I write some custom code in my application to use https-proxy ?
The easiest way to do this is to use CharlesProxy to proxy your device or emulator traffic for you. The only extra step you need to do is to install the CharlesProxy SSL certificate on your device/emulator which is very straight forward:
Download the certificate from Charles Proxy (it's in their help menu) and place it on your device, then install via security settings on your device.
You then configure your device or emulators network connection to use a manual proxy and set it to the Charles Proxy address and port. Enable SSL proxying and your SSL connections will be securely routed end-to-end via Charles and Charles will be able to show you the content of requests and responses in the clear.
I'm using WireShark for sniffing, it allow you to monitor and filter raw data. But because you using https and all transactions encrypted i suppose it can't help you. May be you can switch from https to http for debug, and later when all will be works fine change protocol back to https
Do you mean you can't see the traffic at all or do you get it encrypted? Is this a web application or native application? which Android version are you using? phone or emulator?
Normally, if you set up the proxy properly, you will get the traffic, but encrypted so you can't read it. In order to see the actual content in Fiddler you would need your device to trust Fiddler's root certificate (used to create fake certificates on the fly). See this:
http://www.fiddler2.com/fiddler/help/httpsdecryption.asp
Unfortunately, I have not found a way to add root certificates to an android device other than
rooting it and replacing the certificate store (like this)
https means http secure, so it obviously can't be sniffed so easily. what would be the point if it would be the same unsecure thing as normal http?
you have to learn a bit more about secure network comunications. or, long story short, at least you will have to learn how to use a specilly devised http proxy like charles http://www.charlesproxy.com/documentation/welcome/ so you will be able to monitor you own https traffic in a clear form.
I have an application on an Android phone(emulator) which sends a https request. How I can see that request?
That is easily possible with a software such as Fiddler or Charles. They have an inbuild SSL server that will position itself in between the app and the server. It is kind of a "Man-in-the-Middle" attack, just that you are only attacking yourself.
After installing the software on your PC you will have to set the IP adress of this PC as proxy server in Android. And secondly you will have to install the Root Certificate that the software is using on your Android device.
As you are not braking any encryption and not reverse engineering any application here, I don't think this will classify as illegal. And as you need to have physical access to the device, you also cannot spy on anyone else than yourself.
If you are communicating with your own server, and you have access to its private key, you can use Wireshark to capture packets and have it decrypt the HTTPS traffic. If you are trying to reverse engineer someone else's app, this may or may not be legal and generally cannot be done.