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 Damn Vulnerable Linux (DVL) is a Linux-based (modified Damn Small Linux) tool for IT-Security & IT-Anti- Security and Attack & Defense. [ CLICK HERE FOR MORE INFOS! ]
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Featured Conference Video
 OllyBone - Semi-Automatic Unpacking on IA-32. View the conference video here!
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Home  Articles - White Hat Methods CodeBreakers Journal Vol.3, No.2, 2006
Vol.3, No.2, 2006
 The CodeBreakers Journal deals with IT-Security & IT-Anti-Security and Attack & Defense. The CodeBreakers
Journal is publishing articles after full peer review. All articles are
published, without barriers to access, immediately upon acceptance. The
CodeBreakers Journal is published frequently.
| Writing buffer overflow exploits - a tutorial for beginners
| Writing buffer overflow exploits - a tutorial for beginners [by Mixter]
Buffer overflows in user input dependent buffers have become one of the biggest security hazards on the internet and to modern computing in general. This is because such an error can easily be made at programming level, and while invisible for the user who does not understand or cannot acquire the...
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| Portable Executable File Format – A Reverse Engineer View
| Portable Executable File Format – A Reverse Engineer View
This tutorial aims to collate information from a variety of sources and present it in a way which is accessible to beginners. Although detailed in parts, it is oriented towards reverse code engineering and superfluous information has been omitted.
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| Writing Loaders for DLLs - Theory and Techniques
| Writing Loaders for DLLs - Theory and Techniques
Generally speaking several applications have a protection implemented into one of its Dlls. This is the case for example of out-of-the-shelf protectors used by developers, such as TimeLock, for which the protection checks are implemented into protected Dlls, stored in the Windows’ system32 folder.... Read More >> |
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| Everything is Byte
| Everything is Byte
Everything is byte. Of course, this won't sound SO strange to most of you. After all, everything which resides on a computer's HD, whether it is a sound, a movie or this plain text file, must be first converted to binary format. This takes us to some less obvious considerations: if everyt...
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| Adding Imports by Hand
| Adding Imports by Hand
This is a tutorial about the imports i wrote "by the way" while solving a harder problem. It focus on 2 particular problems: Building up all the imports information and adding imports (both by hand). It does NOT touch the problem of reconstructing a dumped imports section but, hopefully,... Read More >> |
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| VX Reversing
| VX Reversing
For many years, Virus Writers and Reverse Code Engineers have independently studied common topics. As a consequence, these two subjects have grown up as, apparently, unrelated disciplines. NOT ANY LONGER. This is the first of a serie of issues dealing with one of the most interesting topics in Rev...
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| How to Write Your Own Packer
| How to Write Your Own Packer
Why write your own packer when there are so
many existing ones to choose from? Well, aside from making your
executables smaller, packing is a good way to quickly and easily
obfuscate your work. Existing well-know packers either have an
explicit 'unpack' function, or there are readily a...
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| Examining Viruses
| Examining Viruses
Is it virii,
or viruses? - Viruses. :) I have to admit, I am fascinated
with virus programming. Not sure why, but I am always reading about
them, reading up on how to defeat them, and even coding them for my
own educational purposes. I decided to write this high-level overview
of virii that m...
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| Virtual Machine Rebuilding
| Virtual Machine Rebuilding
Virtual Machines are one of the
most controversial protection methods used nowadays. I try to show
how virtual machines are created by examining the full reversed
source code of the VM used in the T2'06 challenge, worth $1'500. It
explains how to code a VM and helps those who wanted to...
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| Reverse Engineering Backdoored Binaries
| Reverse Engineering Backdoored Binaries
This paper is on reverse engineering backdoored
binaries on an x86 Linux Operating System. It is meant for the
beginner reverse engineer with some knowledge of ELF, C, x86 ASM, and
Linux. We will begin by explaining the basics of our binary from what
we can determine by disassembling and then ...
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| Self Modifying Code
| Self Modifying Code
This article takes an in depth look at self
modifying code (SMC) and how you can use it in your own applications.
There are examples in C++ using inline assembly, as well as pure
assembler. I also talk about executing code on the stack, which is
essential to successfully write and execute SMC.
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| Processless Applications - Remotethreads on Microsoft Windows 2000, XP, and 2003
| Processless Applications Remotethreads on Microsoft Windows 2000, XP and 2003
The shown technique is able to run on all Windows operation systems. In order to avoid virus creation on it's best, this technique is shown for W2K/XP/2K3 only. NT4 systems doesn’t know several of the used API's, also it is possible to rewrite them. Non NTbased systems need other techniqu...
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