Tag P2P

InfoSec Week 32, 2018

A Comcast security flaws exposed more than 26 millions of customers’ personal information. Basically, an attacker could spoof IP address using "X-forwarded-for" header on a Comcast login page and reveal the customer’s location.

According to the Check Point Research, more than 150k computers are infected with the new variant of Ramnit botnet named Black. Botnet install second stage malware with the proxy functionality.

Malware infected Apple chip maker Taiwan Semiconductor Manufacturing. All of their factories were shut down last week, but they had already recovered from the attack.

A flaw in the Linux kernel may cause a remote denial of service [CVE-2018-5390]. Attack require less than 2 Kbps of traffic.

GDPR and other cookie consent scripts are used to distribute malware.

Interesting blog on how criminals in Iran make money by creating Android malware apps.

Let's Encrypt root CA certificate is now trusted by all major root programs. They were dependent on a cross-signing on some systems, so this is great news!

There is a really effective new attack on WPA PSK (Pre-Shared Key) passwords. Attackers can ask Access Point for the data required for offline cracking, no client traffic sniffing is needed anymore.

Innovative new research on a software implementation hardening was published with the name "Chaff Bugs: Deterring Attackers by Making Software Buggier".
The idea is simple, introduce a large number of non-exploitable bugs in the program which makes the bug discovery and exploit creation significantly harder.

Researchers from the University of Milan published padding oracle attack against Telegram Passport.
Don't roll your own cryptography schemes if other people depend on it...

A Handshake is a new experimental peer-to-peer root DNS. They have published resolver source code and have test network up and running. Looks like really promising project.

InfoSec Week 36, 2017

The security researcher Pierre Kim has discovered ten critical zero-day vulnerabilities in D-Link routers.

There is a new research paper published on a security of a Bluetooth stack named "The dangers of Bluetooth implementations: Unveiling zero day vulnerabilities and security flaws in modern Bluetooth stacks." Really alarming vulnerabilities discussed.
From a paper: "BlueBorne allows attackers to take control of devices, access corporate data and networks, penetrate secure “air-gapped” networks, and spread malware to other devices. The attack does not require the targeted device to be set on discoverable mode or to be paired to the attacker’s device."

FireEye has analyzed a malicious Microsoft Office RTF document that leveraged CVE-2017-8759, a SOAP WSDL parser code injection vulnerability leveraged by attackers to distribute notoriously known FinFisher / FINSPY malware.
I have included exploit example that is published on a GitHub.

Kaspersky Labs have analyzed the trend of malicious cryptocurrency mining practices on an infected machines.

The Android BankBot malware found on Google Play store is targeting multiple UAE banking applications.

Good analysis of how the JavaScript framework can be abused to bypass XSS mitigations, specifically NoScript’s XSS filter.

NSA had developed the capability to decrypt and decode Kazaa and eDonkey file-sharing apps traffic to determine which files are being shared, and what queries are being performed over those P2P networks.

Formally verified implementation of Curve25519 made it into Firefox 57. And it is 20% faster on 64-bit architectures.

A nice curated list of IDA plugins.

InfoSec Week 19, 2017

You have probably heard about the WannaCry/WannaCrypt/WannaWhatever worm spreading ransomware, because of the sensation created by parties profiting from the scare tactics. But also because it is using really good spreading technique - exploiting MS17-010 SMB vulnerability leaked from the NSA.
Some post-mortem analysis of the first version (with the killswich) and TheShadowBrokers blog are listed below. Crypto is working, so no trivial decrypter is probable, except if the keys are published.
https://gist.github.com/rain-1/989428fa5504f378b993ee6efbc0b168 https://steemit.com/shadowbrokers/@theshadowbrokers/oh-lordy-comey-wanna-cry-edition

Nice analysis of a P2P botnet. The researchers determined the botnet size by injecting fake nodes to the network, as well as using crawling. http://securityaffairs.co/wordpress/58931/malware/p2p-transient-rakos-botnet.html

Fatboy Ransomware-as-a-Service is using The Economist’s Big Mac Index to calculate the ransom amount.

Tor hidden service operator is analysing bots used to enumerates and attack hidden services.

Google Project Zero post about the process of discovering CVE-2017-7308 vulnerability. Found by fuzzing, with the later exploitation to escalate privileges.
https://googleprojectzero.blogspot.ch/2017/05/exploiting-linux-kernel-via-packet.html https://github.com/xairy/kernel-exploits/tree/master/CVE-2017-7308

Wikileakes released "AfterMidnight" and "Assassin " malware frameworks designed, two CIA malware frameworks for the Microsoft Windows platform. Those services allow operators to dynamically load and execute malware payloads on a target machine & exfiltrate the data.

A Security researcher Thorsten Schroeder discovered that an audio driver shipped on dozens HP laptops and tablet PCs logs keystrokes. It's actually a badly written application outputting pressed keystrokes to the debug output, so everyone is able to list them using MapViewOfFile function.

malwaresearch - A command line tool to find malware samples on the openmalware.org. It's possible to use the various hashes or common name.

Secure communication: Bitmessage

Bitmessage is a decentralized, encrypted, peer-to-peer, trustless communications protocol written in Python with Qt GUI.