Reverse Engineering Tools in Linux – strings, nm, ltrace, strace, LD_PRELOAD

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Questions Tags Users Badges Unanswered. Tagged Questions info newest frequent votes active unanswered. Learn more… Top users Synonyms. I tried to debug the bof challenge of pwnable. It is a bit ELF, so I could not run Is it possible to create new section in executable file and save it? Scher Khan 28 3. To my knowledge, we cannot parse sections of this type to IDA creates virtual sections for this symbols. What is the rule or set of rules which IDA use How to exploit an suid root application I have to exploit an application and I have only the bit ELF excecutable, which is also stripped.

Its a suid root application and when it is executed practically run the ls -al command for a John Rewei 3 2. Its a bit ELF stripped executable no debugging options and I have problem because How to find ELF symbol table reference? In a huge ELF binary, I find some functions which use some kind of string constant. The constant itself seems to be stored inside the binary itself but I can't figure out, how to resolve IDA's Is anyone able to point me at one please?

Or a clear one for ELF32 so I can translate? How do you compile a C program with missing symbols? On Page 33, the author compiles a program with a symbol reference and no definition, Let's take a look at the source code: Evan Carroll Elf file format finding.

Having code like this. I am having a little trouble the 101 of elf binaries on linux understanding and analysis the way elfread and r2 interpret the adressing scheme from a binary. For example, r2 finds a function ELF hook function by address I used this to intercept https: Everything is simple enough, but here's the question.

Let's say I want to intercept the 101 of elf binaries on linux understanding and analysis function, not by its name, by its address, as in the How to call method from other compiled executable I want to bruteforce an application with something like serial number verification.

For performance reason, I want to call only one specific function. I see two possibilities: Zach Riggle 1, 7

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Last years I had the opportunity to present and give demos on a regular basis. My expertise is where security, business, software development, and open source meet. Below is the list of upcoming talks. Any of these talks suitable for your conference?

Do you like my presentation s? An endorsement of my speaking skills would be appreciated. Still in , security remains complicated. Why is that and how can we solve it? There is room to improve. So you got an idea, some code, and now you only need the users and contributors? A good idea is not enough to have a successful project. Open source software projects need also marketing, promotion, and optimization. We will look at the technical and non-technical level on how to enhance OSS projects.

This with the goal to get more happy users and gain more traction. I will share from personal experience what works and what not! Subjects include simplicity, the website, dealing with social media, optimize for users and search engines, and the tiny details that matter. This talk is useful for developers, contributors, and also users of open source software. No programming skills are required.

How to promote your open source project. A live ongoing demo about how Lynis can help with system hardening, compliance testing, and more.

The Arsenal is part of the Black Hat conference and consists of passionate developers who show their open source security tools. Presentation about the types of malware and the ones affecting Linux systems. We had a look on how rootkits work and some defenses we can apply to increase detection rates.

Are you really sure the security of your Linux systems is done properly? Since , Michael Boelen performs research in this field.

The answer is short: For this reason, he created several open source security tools, to help others saving time. We will look into how Lynis can help with technical security scans. In this private workshop, 14 students learned about the wide range of possibilities when it comes to Linux security.

We often hear that viruses do not affect Linux systems. If it was only true… To understand why there is malware in the first place, we look at the reasons for evildoers to create harmful software.

When that is clear, we move on by defining several types of malware, to finally focus on a very particular one, the rootkit. A quick course into the cleverness of rootkits follows, with the related challenges it offers for detection. We close the session by giving tips on detection and prevention. So you think the systems at your employer can actually use a little bit more security? Or what about your own system to gain more privacy? In this talk, we discuss the reasons for Linux server and system hardening.

First we learn why we should protect our crown jewels, and what can wrong if we ignore information security. Next is getting a better understanding of the possible resources we can use.

And since system hardening can be time-consuming, we discuss some tools to help in the system hardening quest. Malicious software now exists for more than 40 years. Linux is just another platform having to deal with that threat. But the question remains how should we act when we find a backdoor or rootkit on our system.

Linux is considered to be a secure operating system by default. Still there is a lot to learn about system hardening and technical auditing. This 1-hour presentation explains the need for hardening and auditing of your systems.

To help developers create more secure software, we have to understand the need first. This introduction talk was 2 hours, with many individual tips to know why security is important, and the possible consequences if we ignore that. We covered specific items to enhance the security posture of our applications.

Finally, we finish the presentation by sharing the need for performing regular technical audits. The killer of iptables? Behind the scenes of an open source project PDF The state of Linux security in Stories about Linux and what happened in regarding security. Getting traction for your open source projects PDF So you got an idea, some code, and now you only need the users and contributors?

Arsenal at Black Hat Europa London A live ongoing demo about how Lynis can help with system hardening, compliance testing, and more. Linux Security Workshop Date: Private session Linux Malware Presentation about the types of malware and the ones affecting Linux systems.

Dealing with Linux Malware or SlideShare Linux Hardening So you think the systems at your employer can actually use a little bit more security? Are your containers tightly secured to the ship? Check out some of the presentations.