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Why are Let's Encrypt security certificates invalidated prior to schedule on affected Android devices?

According to a well-regarded QA answer by a member of our Android community here on Stack Exchange: By the current schedule, Let's Encrypt cross signing will end on September the 30th 2024. After ...
End Antisemitic Hate's user avatar
7 votes
2 answers
768 views

HTTPS filtering breaks some apps

I have enabled HTTPS filtering in AdGuard. I installed AdGuard's certificates, and the Magisk module that moves the certificates to the system store. Nevertheless, some apps don't work. Why is this? ...
lamppost01's user avatar
1 vote
1 answer
295 views

How to inspect any android app's HTTP/HTTPS request using Requestly.io?

Requestly.io currently allows to intersect the HTTP and HTTPS packets if requests are made from google chrome as the SSL certificates can not be installed for "VPN and App". How to inspect ...
Chandan Singh's user avatar
0 votes
0 answers
214 views

How do I trust a certificate on android 11 device?

I want to setup this app called Http Toolkit and for some reason I have the warning "System Trust Disabled". My android 11 device is rooted using ksu . How do I trust a certificate on ...
Frk's user avatar
  • 1
3 votes
0 answers
112 views

How to update libssl.so on very old devices?

I tried asking this on xdaforums but did not get a useful answer so I thought I would try here. I've got some very old devices (used as wifi-only) that are starting to have issues connecting to (some ...
ILikeOldStuff's user avatar
3 votes
0 answers
2k views

Cannot add new Certificates to Android Device

Using a Pixel 6a, running Android 13. I am trying to install certificates from a private CA I have established on the internal network. I was able to install the root certificate by doing the ...
JLCarveth's user avatar
3 votes
1 answer
2k views

How to find HTTP requests in apk source code

I've extracted an apk(react native) with dex2jar and jar to java through jd-qui and also with apktool, and I can view the source code but there is no clue where are the HTTP requests in the source ...
Luor Themes's user avatar
5 votes
1 answer
2k views

Firefox for Android refuses loading any website

I wanted to give Firefox for Android a try (I'm a long-time Chrome user), but after installing it from the Play Store, I discovered it refuses to load any website, always showing this security warning ...
Master_T's user avatar
  • 293
0 votes
2 answers
827 views

Can a school wifi certificate track me at home?

At my school, when logging into wifi for the first time, we enter our ID & password into a normal wifi login page, then we download a certificate. I cannot confirm if the certificate changes ...
anonymousaga's user avatar
1 vote
0 answers
836 views

HttpCanary target app uses a non system certificate

I'm looking for a way to bypass a target app using a non-system certificate. The HttpCanary app itself does give a 'solution' however it's incredibly unclear: Goto Settings->HttpCanary root CA ...
omjnst's user avatar
  • 11
1 vote
2 answers
5k views

What can I do to upgrade an old Android 4.0.3 tablet?

I have an Asus Transformer TF101 that is running Android 4.0.3. The tablet can connect websites in HTTP without issue but not in HTTPS. Most HTTPS websites are totally unreachable. Some websites (from ...
OuzoPower's user avatar
  • 111
1 vote
1 answer
2k views

Legacy Android 4.0 CA-Certificates Update

I have two legacy Android 4.0 Garmin Monterra devices. It's not possible anymore to open the Google Play Store or some websites. When I open most of the websites with Chrome, I receive an SSL error ...
mkey's user avatar
  • 11
3 votes
1 answer
2k views

How can I import a Root CA that's trusted by Chrome on Android 11

I have a Root CA (airgapped, openssl) that I use for a lot of internal lab projects. In the past, I've just imported the CA cert into the User credentials store on Android and the system began ...
Matthew Manjos's user avatar
1 vote
1 answer
373 views

Intermitent SSL_PROTOCOL_ERROR when using Android Wi-Fi hotspot

When browsing the internet using the Wi-Fi hotspot of my Android phone (Xiaomi Redmi Note 10 Pro), some requests fail with the following error: net::ERR_SSL_PROTOCOL_ERROR Here is a screenshot of the ...
bobby's user avatar
  • 31
1 vote
0 answers
98 views

Android 7 breaks certificates on Samsung Browser and in Whatsapp

On a Samsung S6 Plus Edge running on Android 7, certain security certificates will break since September 2021: the workaround which Let's Encrypt implemented doesn't seem to work in Samsung Internet. ...
1NN's user avatar
  • 121
1 vote
0 answers
55 views

Let's Encrypt Root certificate expired on old Android tablet. How to fix? [duplicate]

I have an old Android tablet, and websites with Let's Encrypt SSL certificates no longer works. On Let's Encrypt's web site they basically just says it should still work But in my case, it doesn't, I ...
James T's user avatar
  • 41
0 votes
0 answers
77 views

Is there a way that I can "share" images by sending them to an HTTP endpoint?

I want to make some hacky prototypes where I use my phone to collect data and then process it with a regular program. For this I want to share images with an HTTP endpoint written by me to execute ...
Att Righ's user avatar
  • 101
0 votes
0 answers
2k views

Installing Charles proxy certificate on Samsung

I have a problem with Charles proxy certificate on Samsung phone. On Xiaomi everything works fine. But when I try to decrypt traffic on my Samsung device I can't do it - SSL handshake with client ...
Kosh's user avatar
  • 101
3 votes
1 answer
516 views

How can I get back lost internet access on Android 4.x or lower?

I have an Acer A500 tablet running Android 4.0.3. Trying this after not using for some time I find it can't access most websites, getting "Webpage not available" in Opera Mini browser. I ...
marcris's user avatar
  • 31
0 votes
0 answers
639 views

Sniff Android protected app HTTPS requests

I am going to capture an app's HTTPS request to get its Login API. I am using Fiddler. When inputting the username and password and pressing sign in, the app is working. But in Fiddler, I can not find ...
goofy's user avatar
  • 1
1 vote
1 answer
1k views

Is there a way to capture HTTP requests from an installed Play Store app?

I'm developing a search aggregator service so I'd like to get the endpoint of some of the stores that, currently, doesn't expose their API. So I'd like to now if there's a way to do this with my ...
Kenny Horna's user avatar
9 votes
1 answer
4k views

Let's Encrypt: Is there a workaround for the 2021 SSL "cutoff" for pre-7.1.1 Android devices?

In January 2021 all devices with Android prior to 7.1.1 will not be able to connect to HTTPS servers using Let's Encrypt certificate (Let's Encrypt blog post explaining the details) Is there any ...
Alexander M's user avatar
1 vote
1 answer
690 views

SSL error on Firebase hosting on old Android devices

I am not being able to see my Firebase Web App on old Android Devices due to SSL error. There is a question about this, but the answer doesn't say how to solve it. Is there any solution for this?
eyyo's user avatar
  • 111
0 votes
0 answers
459 views

Android 10 user CA file not being used in apps

I'm using an ISP that does internet filtering for me, I have install their CA file, and it works in the browser, and used to work in all apps. After the latest update for Xiaomi Redmi Pro 9, Youtube, ...
Sniffleh's user avatar
  • 101
0 votes
0 answers
330 views

import pem file containing multiple CA certs

Using Samsung S4, Android 5.0.1, not rooted. Recently I have found at least two websites that the Chrome browser on Android 5.0.1 reports https is not secure. This is because the phone does not have ...
Scott R's user avatar
  • 121
0 votes
0 answers
43 views

Is it possible to have shell access to Trusted Certificates

I have an Android Application that launches Python via JNI. Inside of Python I have web requets that I make, some need to be secure. I can configure the APK to be able to access a User CA certificate, ...
Brian S's user avatar
  • 101
1 vote
1 answer
4k views

Unable to install a modified apk file

I want to monitor the https traffic of an Android app downloaded from google play. This app can only be run at Android N and above. So I use Charles proxy and follow this document to modify the apk ...
Brian's user avatar
  • 133
0 votes
0 answers
71 views

Changing third-party websites on android device without browser extensions available

I'm searching a way on how to change behavior of some website in mobile browser. For example: Remove annoing Ad (specific one) Change some elements on a website, to make it easier to read on small ...
MihanEntalpo's user avatar
1 vote
1 answer
710 views

How to inspect HTTPS traffic of a third-party app on Android 9+

I want to inspect inside HTTPS-encrypted packets that an app is sending. It is not my app, I don't have its source code. My device is rooted, so I can modify /system/etc/security/cacert if needed, ...
Nicolas Raoul's user avatar
0 votes
0 answers
46 views

Montoring network traffic on Android phone (for research user study)

For context: We would like to analyze user mobile online (browsing) behavior in a user study. The study has been approved by our university's IRB, participants will have to give informed consent and ...
Christian's user avatar
  • 101
0 votes
0 answers
516 views

Connecting to own proxy with self-made CA certificate not (properly) working

I have a Squid proxy installed with HTTPS/SSL support. When I install the generated CA certificate in Firefox and set the proxy, everything looks good -- that is, I can see all the HTTP(S) requests ...
Christian's user avatar
  • 101
1 vote
0 answers
2k views

HTTP/HTTPS Transparent Proxy on Android

So on linux, I use transparent mode of mitmdump (mitmproxy without interaction) to build a websites filter and I run it as root on startup so that it cannot be killed if the user does not have sudo ...
SmartestKen's user avatar
3 votes
1 answer
622 views

How can I view a TLS 1.2 only website on an outdated tablet?

I have a tablet from 2011 (Prestigio MultiPad PMP3384B) with Android 2.3 which I use occasionally. I’ve experienced recently that I cannot view some webpages (https://www.nytimes.com/, for example) as ...
Melebius's user avatar
  • 131
2 votes
1 answer
12k views

How to set Wi-Fi HTTPS proxy, not HTTP, via adb shell?

For HTTP I found a link: How to set WIFI proxy via adb shell? But I want to setup HTTPS proxy via adb shell.
Manish's user avatar
  • 21
0 votes
0 answers
2k views

SSL certificates not updated on old Android

I have an old Android smartphones. More and more websites stop working because my chrome browser doesn't trust the root CA (Outdated or missing CA certificates). Obviously the root CA list is only ...
firendlyQuestion's user avatar
0 votes
0 answers
225 views

Why I couldn't monitor traffic from this page?

When I opened the capture log I found nothing from the page other than this when I first tried to visit it using http only, and then I get that security warning and i click proceed to unsafe anyway i ...
mina nageh's user avatar
1 vote
0 answers
2k views

Cannot connect to HTTPS sites due to device clock being ahead

I cannot access 'My Search.com' I just set as my homepage (Brave browser) and Yandex for my search engine (new install). I got an error saying that my (device) time is ahead. Your clock is ...
user avatar
1 vote
1 answer
2k views

Is there a web browser for the 1st generation Kindle Fire that uses TLS1.2 or higher?

Various websites are starting to fail to load in the built-in Silk web browser, and I've tracked the issue down to the fact that Silk uses only TLS 1.0. TLS 1.0/1.1 is outdated and insecure to such ...
Andrew Lambert's user avatar
0 votes
1 answer
139 views

HTTPS websites slow on Phone

I am trying to investigate why our Phones are experiencing slow browsing to HTTPS sites. It happens only the first time after the phone in question has been locked for a couple of minutes or more. So ...
user avatar
1 vote
0 answers
966 views

Bypassing certificate pinning with integrity checks on Android 7 (Nougat) or newer

How can I bypass Certificate Pinning, or bypass SSL verification entirely, in an Android app on Android 7 or newer that has a built-in hash 'integrity check' to rule out APK modification? Here is a ...
habs's user avatar
  • 111
1 vote
0 answers
1k views

Can't visit " https " sites with an Android device using Wi-Fi

I have a strange problem on one of my old phones. I have an old Android device running Android 2.3.4, and it works perfectly. But, I found that, it can't access to https sites with the basic browser ...
user avatar
0 votes
0 answers
67 views

Does anyone know what this android emulator call is?

I've been looking at the network traffic for an Android emulator using mitm proxy. I have noticed large amounts of traffic going to google's servers. Does anyone know what this request would carry ...
MikeSchem's user avatar
  • 253
9 votes
2 answers
1k views

How does Android handle wifi root CAs? Should they be a security concern?

My university requires me to install a custom root CA to connect to their wifi network. When I installed it on my phone, it let me specify "Wifi" or "VPN and apps". I chose wifi, and was able to ...
Alejandro Ramallo's user avatar
1 vote
0 answers
133 views

Removed trusted CA's now can't use Google.........Anything!

My boyfriend accidently hit the 'Remove all stored credentials' and now he can not access anything Google, but most importantly the Play Store. OK it might have been on purpose, don't ask, but now it'...
Keona Daugherty's user avatar
0 votes
1 answer
122 views

Watch whether an app uses TLS

I'd like to inspect the network usage of my apps (e.g., a banking app) to determine the security protocols they employ (if HTTPS: TLS layer version, encryption protocol, key size, signature algorithm, ...
Jonathan Y.'s user avatar
7 votes
0 answers
2k views

How to remember/cache a client certificate

I support a web-application that requires an https connection with client certificates as part of the authentication scheme. On most browsers (Desktop clients, iOS Safari, etc) if you are prompted for ...
Kevek's user avatar
  • 171
6 votes
1 answer
9k views

Android support for TLS

I have found that TLS1.1 and TLS1.2 is supported from API level 16 and on by default from API level 20. This corresponds to Android 4.1 (supported) and Android 4.4W (wearable) or Android 5.0 (on by ...
Silver's user avatar
  • 163
1 vote
0 answers
809 views

How are certs validated against default trust store?

Through some reading, I have a fairly rough understanding about how https works with Android apps, especially how are certificate validations done. Some of the resources that I referred to for gaining ...
qre0ct's user avatar
  • 111
0 votes
1 answer
2k views

Import/Install SSL-certificate without CA-flag

Our team has the following problem: We are developing a client-application for android and iOS using Unity + UniWebview + HTML. This app includes Ajax-requests to some servers via jQuery. For testing ...
MMauerer's user avatar
1 vote
1 answer
2k views

Using Gmail app on a public WiFi

Does official Gmail app use a secure connection? This post above discussing whatever Gmail using a secure connection, but is it relevant to a public WiFi connection? Or in public WiFi, is there a ...
user5502420's user avatar