Home » hacking

Tag: hacking

Venmo post logo

How to steal $2,999.99 in less than 2 minutes with Venmo and Siri

Venmo is a very popular mobile app which simplifies payments among friends. Once you link your bank account or credit card, you can start sending money to others, instantly.

With Venmo, you are not limited to just make payments. It allows you to charge others as well. Say your friend had no cash for that tasty burrito and you paid for it. You have the option to be proactive and “charge” your friend using Venmo. Charging someone does not mean that the money will be withdraw from his account, it just means that he will get a notification and see the pending payment in his account. Your friend has to accept the charge in order for the payment to happen. And this functionality is what we are going to take advantage of.

Read more

A look into LastPass

As part of the time that my company offers for research, my good friend and talented hacker Alberto Illera (@algillera) and me decided to “checkout” LastPass.

Many of you may already know (or even use) LastPass. It is a pretty well known password manager that stores all your passwords in a “vault” and keeps them secure. Additionally, it can automatically populate the credentials for you when you visit a website in which your are registered making it easy to use more secure, random and unique passwords. You will just have to remember the master password that decrypts the vault and that’s all.

LastPass comes in many forms. As a browser plugin, as a mobile app or even as Webapp.

As you may agree, a service that stores all your passwords sounds like a cool target so we decided to have “A look into LastPass”, understand how it works, check if it really keeps our passwords secure and why not? Try to find vulnerabilities.

Read more

Flywheel, Free rides and credit cards

After looking at Lyft, it was turn to check out Flywheel. Flywheel is yet another app to help you find cabs just as Uber does. During my pentest I found several serious security problems.

Ride and get paid!

Yep, just like it sounds. Flywheel lets you set a default tip that will be added to the total cost so you don’t have to bother about tipping the driver. The app gives you several options (15%, 20%, 25%). When we set a tip, the request looks like this: Read more