Reverse Engineering
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We've recently released our malware document scanner tool called Cryptam (which stands for cryptanalysis of malware) . This system scans document files such as MS Office (.doc/.ppt/.xls), PDF and other document formats for embedded executables whether encrypted or not. As most embedded malware executables use varying lengths of XOR and ROL/ROR obfuscation to evade traditional A/V detection, we focus on the detection of the embedded executable rather than the exploit itself. A typical Cryptam report visually shows three critical pieces of the cryptanalysis done. The first graph shows the count for each ascii character in the file, obvious single byte XOR keys can be seen here. The second graph is the entropy of the file, most documents other than PDFs are very light entropy on legitimate content, and only images or the embedded executables showing as red high entropy sections.
malware tracker blog: New malware document scanner tool released
Intel processors have been a major force in personal computing for more than 20 years. An understanding of low level computing mechanisms used in Intel chips as taught in this course serves as a foundation upon which to better understand other hardware, as well as many technical specialties such as reverse engineering, compiler design, operating system design, code optimization, and vulnerability exploitation. 25% of the time will be spent bootstrapping knowledge of fully OS-independent aspects of Intel architecture. 50% will be spent learning Windows tools and analysis of simple programs. The final 25% of time will be spent learning Linux tools for analysis.
Introductory Intel x86: Architecture, Assembly, Applications, Day 1, Part 3 : Xeno Kovah
Intel processors have been a major force in personal computing for more than 20 years. An understanding of low level computing mechanisms used in Intel chips as taught in this course serves as a foundation upon which to better understand other hardware, as well as many technical specialties such as reverse engineering, compiler design, operating system design, code optimization, and vulnerability exploitation. 25% of the time will be spent bootstrapping knowledge of fully OS-independent aspects of Intel architecture. 50% will be spent learning Windows tools and analysis of simple programs. The final 25% of time will be spent learning Linux tools for analysis.
Introductory Intel x86: Architecture, Assembly, Applications, Day 1, Part 4 : Xeno Kovah
Introductory Intel x86: Architecture, Assembly, Applications, Day 1, Part 5 : Xeno Kovah
Intel processors have been a major force in personal computing for more than 20 years. An understanding of low level computing mechanisms used in Intel chips as taught in this course serves as a foundation upon which to better understand other hardware, as well as many technical specialties such as reverse engineering, compiler design, operating system design, code optimization, and vulnerability exploitation. 25% of the time will be spent bootstrapping knowledge of fully OS-independent aspects of Intel architecture. 50% will be spent learning Windows tools and analysis of simple programs. The final 25% of time will be spent learning Linux tools for analysis. This class serves as a foundation for the follow on Intermediate level x86 class. It teaches the basic concepts and describes the hardware that assembly code deals with.
Intel processors have been a major force in personal computing for more than 20 years. An understanding of low level computing mechanisms used in Intel chips as taught in this course serves as a foundation upon which to better understand other hardware, as well as many technical specialties such as reverse engineering, compiler design, operating system design, code optimization, and vulnerability exploitation. 25% of the time will be spent bootstrapping knowledge of fully OS-independent aspects of Intel architecture. 50% will be spent learning Windows tools and analysis of simple programs. The final 25% of time will be spent learning Linux tools for analysis. This class serves as a foundation for the follow on Intermediate level x86 class.
Introductory Intel x86: Architecture, Assembly, Applications, Day 2, Part 1 : Xeno Kovah
Introductory Intel x86: Architecture, Assembly, Applications, Day 2, Part 2 : Xeno Kovah
Intel processors have been a major force in personal computing for more than 20 years. An understanding of low level computing mechanisms used in Intel chips as taught in this course serves as a foundation upon which to better understand other hardware, as well as many technical specialties such as reverse engineering, compiler design, operating system design, code optimization, and vulnerability exploitation. 25% of the time will be spent bootstrapping knowledge of fully OS-independent aspects of Intel architecture. 50% will be spent learning Windows tools and analysis of simple programs. The final 25% of time will be spent learning Linux tools for analysis. This class serves as a foundation for the follow on Intermediate level x86 class. It teaches the basic concepts and describes the hardware that assembly code deals with.
Intel processors have been a major force in personal computing for more than 20 years. An understanding of low level computing mechanisms used in Intel chips as taught in this course serves as a foundation upon which to better understand other hardware, as well as many technical specialties such as reverse engineering, compiler design, operating system design, code optimization, and vulnerability exploitation. 25% of the time will be spent bootstrapping knowledge of fully OS-independent aspects of Intel architecture. 50% will be spent learning Windows tools and analysis of simple programs. The final 25% of time will be spent learning Linux tools for analysis. This class serves as a foundation for the follow on Intermediate level x86 class. It teaches the basic concepts and describes the hardware that assembly code deals with.
Introductory Intel x86: Architecture, Assembly, Applications, Day 2, Part 3 : Xeno Kovah
Introductory Intel x86: Architecture, Assembly, Applications, Day 2, Part 4 : Xeno Kovah
Intel processors have been a major force in personal computing for more than 20 years. An understanding of low level computing mechanisms used in Intel chips as taught in this course serves as a foundation upon which to better understand other hardware, as well as many technical specialties such as reverse engineering, compiler design, operating system design, code optimization, and vulnerability exploitation. 25% of the time will be spent bootstrapping knowledge of fully OS-independent aspects of Intel architecture. 50% will be spent learning Windows tools and analysis of simple programs. The final 25% of time will be spent learning Linux tools for analysis.Introductory Intel x86: Architecture, Assembly, Applications, Day 2, Part 5 : Xeno Kovah
Intel processors have been a major force in personal computing for more than 20 years. An understanding of low level computing mechanisms used in Intel chips as taught in this course serves as a foundation upon which to better understand other hardware, as well as many technical specialties such as reverse engineering, compiler design, operating system design, code optimization, and vulnerability exploitation. 25% of the time will be spent bootstrapping knowledge of fully OS-independent aspects of Intel architecture. 50% will be spent learning Windows tools and analysis of simple programs.
Introductory Intel x86: Architecture, Assembly, Applications, Day 2, Part 6 : Xeno Kovah
Intel processors have been a major force in personal computing for more than 20 years. An understanding of low level computing mechanisms used in Intel chips as taught in this course serves as a foundation upon which to better understand other hardware, as well as many technical specialties such as reverse engineering, compiler design, operating system design, code optimization, and vulnerability exploitation. 25% of the time will be spent bootstrapping knowledge of fully OS-independent aspects of Intel architecture. 50% will be spent learning Windows tools and analysis of simple programs.
IntroX86
Lab Requirements : Requires a Windows system with Visual C++ Express Edition. Requires a Linux system with gcc and gdb, and the CMU binary bomb installed. Either system can be physical or virtual. Class Textbook : Professional Assembly Language by Richard Blum. This was chosen as a reference book because it provides an alternate explanation for all the instructions covered in the class. However it is Linux and AT&T syntax focused rather than Windows and Intel syntax.The current threat landscape around cyber attacks is complex and hard to understand even for IT pros. The media coverage on recent events increases the challenge by putting fundamentally different attacks into the same category, often labeled as advanced persistent threats (APTs). The resulting mix of attacks includes everything from broadly used, exploit-kit driven campaigns driven by cyber criminals, to targeted attacks that use 0-day vulnerabilities and are hard to fend off - blurring the threat landscape, causing confusion where clarity is most needed. This article analyzes a specific incident - last March’s RSA breach, explaining the techniques used by the attackers and detailing the vulnerability used to gain access to the network. It further explores the possible mitigation techniques available in current software on the OS and application level to prevent such attacks from reoccurring.
Into the Darkness: Dissecting Targeted Attacks | Qualys Security Labs | Qualys Community
.:: Phrack Magazine ::.
Thumbs up for the author and the Phrack staff.. in the description of assembly of example3.c, there is a minor typographic error in the address, though text remains still very understandable. copying the sentence here:Já está circulando há um tempo mensagens de phishing que utilizam o nome do Ministério Público Federal e do Departamento de Polícia Federal falando de uma suposta intimação para comparecer em uma audiência. Hoje recebi mais uma desse tipo e resolvi analisar, vamos ver o que conseguimos. O executável não possuia compactador e a linguagem de programação identificada foi Microsoft Visual Basic 5.0 / 6.0, assim o caminho estava livre para prosseguir. Vemos um endereço IP , várias URLs de bancos , referência ao arquivo hosts do Windows e por fim uma URL .
Crimes Cibernéticos: Análise do Malware Intimação-MPF
This webcast will introduce you to practical approaches of reverse-engineering malicious software. I cover behavioral and code analysis phases, to make this topic accessible even to individuals with a limited exposure to programming concepts. You'll learn the fundamentals and associated tools to get started with malware analysis.