linux, aslr, security research, bypass, userland — 10 February 2020 The never ending problems of local ASLR holes in Linux Introduction Address Space Layout Randomization, or simply ASLR, is a probabilistic security defense that was released by the PaX Team in 2001 and introduced into upstream kernels in 2005 (2.6.12). As the name itself indicates, it randomly arranges...
homographs, telegram, signal, security research — 01 April 2019 What you see is not what you get: when homographs attack Introduction Since the introduction of Unicode in domain names (known as Internationalized Domain Names, or simply IDN) by ICANN over two decades ago, a series of brand new security implications were also brought into light together with the possibility of...
advisory, telegram, security research, homographs — 25 March 2019 Security advisory: Telegram instant messenger IDN homograph attack Advisory information Title: Telegram instant messenger IDN homograph attacks Advisory reference: BLAZE-02-2019 (CVE-2019-10044) Product: Telegram Disclosure mode: Coordinated disclosure Product description Telegram is a messaging app with a focus on speed and security, it’s super-fast, simple and free. You...
homographs, security research, advisory, signal — 24 March 2019 Security advisory: Signal IDN homograph attack Advisory information Title: Signal IDN homograph attacks Advisory reference: BLAZE-01-2019 (CVE-2019-9970) Product: Signal Disclosure mode: Coordinated disclosure Product description Signal is an encrypted communications app for Android and iOS. A desktop version is also available for Linux, Windows, and macOS....
ntlm, security, red team — 03 July 2018 Love letters from the red team: from e-mail to NTLM hashes with Microsoft Outlook Introduction A few months ago Will Dormann of CERT/CC published a blog post [1] describing a technique where an adversary could abuse Microsoft Outlook together with OLE objects, a feature of Microsoft Windows since its early days, to force...
blockchain, solidity, smart contract, audit, security — 30 March 2018 Jury.Online smart contract security audit Introduction This blog post presents the results of a security audit of a smart contract performed by Blaze Information Security, and made public on behalf of the client Jury.Online. This post contains the very same information and findings present...
security, smart contract, blockchain, audit, solidity — 26 February 2018 ANNI tokens smart contract security audit Introduction This blog post presents the results of a security audit of a smart contract performed by Blaze Information Security, and made public on behalf of the client Array.io (formerly known as Annihilat.io). This post contains the very...
ssrf, webappsec, xss, ntlm, responder — 18 December 2017 Leveraging web application vulnerabilities to steal NTLM hashes Introduction NTLM authentication is the de-facto standard in corporate networks running Windows. There are a plethora of well-understood local attacks that take advantage of the way Windows perform automatic NTLM authentication, and abusing this feature is undoubtedly on the playbook...
security, tools, fuzzing — 10 June 2017 Fuzzing proprietary protocols with Scapy, radamsa and a handful of PCAPs Introduction As security consultants, we act as hired guns by our clients to perform black-box security testing of applications. Oftentimes we have to assess the security of applications that use their own proprietary schemes for communication, instead of relying on...
advisory, security research — 29 March 2017 Security advisory: Porteus Kiosk security restrictions bypass Advisory information Title: Porteus Kiosk security restrictions bypass Advisory reference: BLAZE-01-2017 Product: Porteus Kiosk Disclosure mode: Coordinated disclosure Product description Porteus Kiosk is a popular lightweight Linux designed to be used as a kiosk solution. It implements several restrictions with...
security, gsm, bladerf, yatebts — 12 September 2016 Practical attacks against GSM networks (Part 1/3): Impersonation Introduction The Global System for Mobile Communications (GSM) is a mobile technology and the most popular standard for mobile phones worldwide. Originally known as Groupe Spécial Mobile, the GSM came through the CEPT (Conférence des Administrations Européenes des Postes et...
tools, burp, security — 29 June 2016 Turning Burp Scanner vulnerabilities into Splunk events Introduction Splunk is a fully featured, powerful platform for collecting, searching, monitoring and analyzing machine data. It is widely used by Security Operation Centre (SOC) teams to provide advanced security event monitoring, threat analytics, incident response and cyber threat management....
survey, security, webappsec — 30 May 2016 A survey on the usage of HTTP security headers in Brazil and Estonia Introduction In the recent years a number of security-oriented client-side controls for web browsers appeared in the scene in form of security headers. These headers can be used to improve the security of the user experience when interacting with a...
postexploitation, tools, telegram — 18 May 2016 bt2: leveraging Telegram as a command & control platform Introduction At Blaze Security we are always looking for new ways to further improve our engagements. As every penetration tester knows, post-exploitation is a crucial step for successful compromise and further penetration deep inside the network. Maintaining a strong foothold...
News — 04 May 2016 printf("hello, world!"); We are strong believers in technical excellence and the entire team firmly holds as an opinion that research is the lifeblood of the information security industry. Especially in such a fast-paced industry like IT security, no innovation or no time...
