A tale of a kiosk escape: ‘Sricam CMS’ Stack Buffer Overflow

TL;DR: Shenzhen Sricctv Technology Sricam CMS (SricamPC.exe) <= v.1.0.0.53(4) and DeviceViewer (DeviceViewer.exe) <= v.3.10.12.0 (CVE-2019-11563) are affected by a local Stack Buffer Overflow. By creating a specially crafted "Username" and copying its value in the "User/mail" login field, an attacker will be able to gain arbitrary code execution in the context of the currently logged-in user. Please Note: by default, Sricam CMS requires elevation and runs in High Integrity mode; exploitation of the above software will result in a compromise...

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Perform a Nessus scan via port forwarding rules only

This post will be a bit different from the usual technical stuff, mostly because I was not able to find any reliable solution on Internet and I would like to help other people having the same doubt/question, it's nothing advanced, it's just something useful that I didn't see posted before. During a recent engagement I found myself in a strange network position. I had to perform a Nessus credentialed and patch checks on some Windows server, I was in a...

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SolarPuttyDecrypt

During a recent Red Team engagement, I was able to become domain admin on the client’s network; I decided to investigate further into the “sys admin” workstations and management network in order to recover more information about the network topology and assets, dumping more password and gaining access to firewalls/switches and servers’ VLANs. Enumerating the sysadmin’s workstations, I discovered a windows tool used to connect via SSH. TL;DR SolarPuttyDecrypt is a post-exploitation/forensics tool to decrypt SolarPuTTY's sessions files and retrieve plain-text credentials....

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electron

Instrumenting Electron Apps for Security Testing

This is a re-posting of the original article "Instrumenting Electron Apps for Security Testing" that I have wrote on Doyensec What is Electron? The Electron Framework is used to develop multi-platform desktop applications with nothing more than HTML, JavaScript and CSS. It was initially developed for GitHub's Atom editor and since then it was used to create applications like Discord, Ghost, GitHub, Skype, Slack, Wire and a lot more. While for the traditional desktop application various security techniques exists in order to...

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GraphQL – Security Overview and Testing Tips

This is a re-posting of the original article "GraphQL - Security Overview and Testing Tips" that I have wrote on Doyensec With the increasing popularity of GraphQL technology we are summarizing some documentation and tips about common security mistakes. What is GraphQL? GraphQL is a data query language developed by Facebook and publicly released in 2015. It is an alternative to REST API. Even if you don’t see any GraphQL out there, it is likely you’re already using it since it’s running on...

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Uncommon Phishing and Social Engineering Techniques

Sorry if you didn’t hear anything from me for a while but it was a very busy year and the new incoming one will bring a lot of news for me and for the voidsec project, I will speak about it soon in a new blog post. Today I will like to write about some uncommon techniques that I’ve used during social engineering and phishing campaign. Maybe they are not overpowered but they can be pretty useful. Behind the Scene All of...

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Analysis of the Joomla RCE (CVE-2015-8562)

Recently, during a penetration test I have found a vulnerable installation of the Joomla CMS. Yes, I already know that this vulnerability is quite old and that there is a ready to use Metasploit module but here is the catch: the module and other scripts available on internet weren’t working against my environment, furthermore, during the last year a lot of new vulnerabilities rely on the PHP Object Injection and Serialize/Unserialize. That's the reason why I thought it was a...

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Backdoored OS

Recap Nella giornata del 21 Febbraio la distribuzione Linux Mint è stata attaccata e, a seguito dell’intrusione, l’aggressore è stato in grado di modificare la ISO della versione 17.3 Cinnamon Edition, inserendo una backdoor al suo interno. "Hackers made a modified Linux Mint ISO, with a backdoor in it, and managed to hack our website to point to it," Clement Lefebvre - head of Linux Mint project Tralasciando le modalità dell’attacco a Wordpress, la successiva compromissione del sito web e del forum (password...

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Backdoored OS

Recap On February 21 Linux Mint was attacked and, as a result of the intrusion, the attacker was able to backdoor the ISO (Cinnamon Edition v17.3). "Hackers made a modified Linux Mint ISO, with a backdoor in it, and managed to hack our website to point to it," Clement Lefebvre - head of Linux Mint project Aside from the Wordpress attack, the subsequent forum dump (database password: "upMint.", seriously?) and the analysis of the malware (Tsunami/Kaiten), this incident made me think about a...

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Tecniche Evasive #2

In seguito al primo articolo relativo alle tecniche evasive mi avete scritto in tanti dandomi feedback e generando discussioni utili, ecco pertanto un “secondo capitolo”. Premessa Mi è stato fatto notare come il termine attaccante venga utilizzato nello sport mentre la traduzione corretta di “attacker” sia aggressore, ho quindi “patchato” il seguente articolo sistemando la terminologia. Un piccolo approfondimento per quanto riguarda la mia frase: “Il Social Engineering incontra una forte resistenza da parte delle singole aziende e dei sindacati, non è...

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