Securing Your API server with Approov and Cloudflare

Tue 19 November 2019 By Paulo Renato

Category: Integration, Mobile App Authentication, API

Cloudflare is famous among developers as a leading CDN to efficiently deliver customer facing Internet content for their applications, but Cloudflare can also be used to verify all incoming requests before they reach your API server, by leveraging Cloudflare workers.

Read More

How to Protect Against Certificate Pinning Bypassing

Tue 15 October 2019 By Paulo Renato

Category: Mobile App Authentication, Repackaged Apps, Reverse Engineering, Threats, API, MitM Attack, Certificate Pinning

In my previous article, we saw how to bypass certificate pinning within a device you control and, as promised, we will now see how you can protect yourself against such an attack.

In this article you will learn how to use a mobile app attestation service to protect your API server from accepting requests that come from a mobile app where certificate pinning has been bypassed. This means that even though the attacker has bypassed the certificate pinning, he will not be able to receive successful responses from the API server. Instead, the server will always return 401 responses, thus protecting your valuable data from getting into the wrong hands.

Read More

Bypassing Certificate Pinning

Sun 18 August 2019 By Paulo Renato

Category: Android, Mobile App Development, MitM Attack, Certificate Pinning

In a previous article we saw how to protect the https communication channel between a mobile app and an API server with certificate pinning, and as promised at the end of that article we will now see how to bypass certificate pinning.

To demonstrate how to bypass certificate pinning we will use the same Currency Converter Demo mobile app that was used in the previous article.

In this article you will learn how to repackage a mobile app in order to make it trust custom ssl certificates. This will allow us to bypass certificate pinning.

Read More

Improve the Security of API Keys

Wed 24 July 2019 By Skip Hovsmith

Category: API Keys, Mobile App Authentication, Reverse Engineering, API, Mobile App Development, MitM Attack

Securely identify your API Caller

Read More

SECURING HTTPS WITH CERTIFICATE PINNING ON ANDROID

Wed 26 June 2019 By Paulo Renato

Category: Android, API, Mobile App Development, MitM Attack, Certificate Pinning

 

In a previous article we saw how we could steal an API key by performing a man in the middle (MitM) attack to intercept the https traffic between the mobile app and the API server. In this article we will learn how to mitigate this type of attack by using a technique known as certificate pinning.

In order to demonstrate how to use certificate pinning for protecting the https traffic between your mobile app and your API server, we will use the same Currency Converter Demo mobile app that I used in the previous article.

In this article we will learn what certificate pinning is, when to use it, how to implement it in an Android app, and how it can prevent a MitM attack.

Read More

APPROOV INTEGRATION IN A JAVA SPRING STATELESS API

Thu 09 May 2019 By Paulo Renato

Category: Integration, Mobile App Authentication, API

This walk-through will show how simple it is to integrate Approov in a stateless API server using Java and the Spring framework.

We will see the requirements, dependencies and a step by step walk-through of the code necessary to implement Approov in a Java Spring stateless API.
Read More

Apple DeviceCheck and CriticalBlue Approov

Sat 27 April 2019 By David Stewart

Category: API Keys, Android, Mobile App Authentication, Repackaged Apps, Reverse Engineering, Threats, SafetyNet, DeviceCheck

Image credit

We are often asked by customers and prospects to compare our beloved Approov with Apple's DeviceCheck offering. Since DeviceCheck is intended to uniquely identify iOS phone instances then this is a reasonable question. However, DeviceCheck and Approov are designed to do quite different things and therefore we wrote a handy guide to help our customers appreciate when to employ each solution and why. You can download the guide from here.

Read More

Google SafetyNet and CriticalBlue Approov

Sat 27 April 2019 By David Stewart

Category: API Keys, Android, Mobile App Authentication, Repackaged Apps, Reverse Engineering, Threats, SafetyNet, DeviceCheck

Image credit

We are often asked by customers and prospects to compare our beloved Approov with Google's SafetyNet offering. Since SafetyNet is intended to identify genuine Android instances then this is a reasonable question. However, SafetyNet and Approov are designed to do quite different things and therefore we wrote a handy guide to help our customers appreciate when to employ each solution and why. You can download the guide from here.

Read More

STEAL THAT API KEY WITH A MAN IN THE MIDDLE ATTACK

Thu 04 April 2019 By Paulo Renato

Category: API Keys, Mobile App Authentication, Reverse Engineering, Third Party APIs, Mobile App Development

As I promised in my previous article, here it is the follow up article about performing a man in the middle (MitM) attack to steal an API key, and to follow this article you will need to become the man sitting in the middle of the actual channel, using mitmproxy to help you with the task of stealing the API key. Now it should be clear why MitM stands for man in the middle!

Read More

Preventing Mobile App and API Abuse

Thu 21 March 2019 By Skip Hovsmith

Category: TLS, Android, iOS, Mobile App Authentication, OAuth2, API, Mobile App Development

 
Read More

Page 1 of 8