S3lab http://s3lab.deusto.es S3lab Security Blog Wed, 06 May 2020 12:51:35 +0000 en-US hourly 1 https://wordpress.org/?v=5.1.5 sudo systemctl hibernate http://s3lab.deusto.es/sudo-systemctl-hibernate-en/ Wed, 09 Jan 2019 10:57:53 +0000 http://s3lab.deusto.es/?p=10129 After 5 magnificent years filled with posts, comes that moment that animals living in extremely cold conditions know, hibernation. Many heartfelt thanks to the contributors of the blog, this adventure would have been very different without the help of each…

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]]> After 5 magnificent years filled with posts, comes that moment that animals living in extremely cold conditions know, hibernation.

Many heartfelt thanks to the contributors of the blog, this adventure would have been very different without the help of each one of you. Nor do we want to forget each of the readers who have decided to use their precious time to read us post after post.

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]]> Interview with Vicente Motos (@hackplayers) http://s3lab.deusto.es/interview-vicente-motos-hackplayers/ Mon, 10 Dec 2018 10:23:14 +0000 http://s3lab.deusto.es/?p=10109 Vicente started working in security within Thales, and is currently team leader in SIA group. I’m sure many of you have read his blog more than once, Hackplayers. It has been recognized as one of the community’s reference blogs and…

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]]> Vicente started working in security within Thales, and is currently team leader in SIA group. I’m sure many of you have read his blog more than once, Hackplayers. It has been recognized as one of the community’s reference blogs and recently, it has organized its own conference (h-c0n). Although your profile has more information about, we leave you a phrase that defines:

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]]> Blockchain. ¿revolutionary technology or hype? http://s3lab.deusto.es/blockchain-revolution-or-hype/ Fri, 09 Nov 2018 13:45:32 +0000 http://s3lab.deusto.es/?p=10074 I am convinced that if  you follow the technological world, you will have heard during the last year or maybe before, about that wonderful technology known as blockchain destined according to many to revolutionize the world of cybersecurity and not…

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I am convinced that if  you follow the technological world, you will have heard during the last year or maybe before, about that wonderful technology known as blockchain destined according to many to revolutionize the world of cybersecurity and not any technological company or not. But how much is true in this?

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]]> Loading binaries in Linux http://s3lab.deusto.es/loading-binaries-linux/ Sun, 14 Oct 2018 16:36:44 +0000 http://s3lab.deusto.es/?p=10060 Executables are a static representation of a program and that at the time they are executed, the kernel uses the information included in those files to create a dynamic representation, better known as the process images. Before being able to execute…

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]]> Executables are a static representation of a program and that at the time they are executed, the kernel uses the information included in those files to create a dynamic representation, better known as the process images. Before being able to execute a binary it is necessary to load it in the memory and the one in charge to do it is the loader, that generally is part of the operative system.

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]]> Automatic Heap Layout Manipulation via #UseSec18 http://s3lab.deusto.es/heap-manipulation-usesec18-en/ Tue, 25 Sep 2018 15:36:44 +0000 http://s3lab.deusto.es/?p=10037 Automatic exploit generation is a concept that has been studied during the last years, focusing mainly on buffer overflows located in the stack. The main objective of these works is generally to develop algorithms that produce control-flow hijacking exploits based…

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]]> Automatic exploit generation is a concept that has been studied during the last years, focusing mainly on buffer overflows located in the stack. The main objective of these works is generally to develop algorithms that produce control-flow hijacking exploits based on specific input values (which could also be discovered automatically) that cause the corruption of a pointer to instruction stored in the stack. However, carrying out the same concept in the heap presents different challenges

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]]> How hacking could change history http://s3lab.deusto.es/hacking-change-history/ Thu, 06 Sep 2018 09:57:06 +0000 http://s3lab.deusto.es/?p=10018 Although hacking began as simple entertainment for a group of enthusiastic young people, much has changed since then. Today, all countries have, to a greater or lesser extent, a response or attack group of this type. The clearest examples would…

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]]> Although hacking began as simple entertainment for a group of enthusiastic young people, much has changed since then. Today, all countries have, to a greater or lesser extent, a response or attack group of this type. The clearest examples would be the NSA and the CERT / CC (in which I had the luck to be able to work temporarily) of the United States. We are living what will be remembered as the beginning of digital wars, where soldiers use keyboards instead of automatic rifles.

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