FLARE IDA Pro Script Series: Simplifying Graphs in IDA

Introduction We’re proud to release a new plug-in for IDA Pro users – SimplifyGraph – to help automate creation of groups of nodes in the IDA’s disassembly graph view. Code and binaries are available from the FireEye GitHub repo. Prior to this release we submitted it in the 2017 Hex-Rays plugin...

FLARE IDA Pro Script Series: Simplifying Graphs in IDA

Introduction We’re proud to release a new plug-in for IDA Pro users – SimplifyGraph – to help automate creation of groups of nodes in the IDA’s disassembly graph view. Code and binaries are available from the FireEye GitHub repo. Prior to this release we submitted it in the 2017 Hex-Rays plugin...

Debugging Complex Malware that Executes Code on the Heap

Introduction In this blog, I will share a simple debugging tactic for creating “save points” during iterative remote debugging of complex multi-stage samples that execute code in heap memory at non-deterministic addresses. I’ll share two examples: one contrived, and the other a complex, modular...

BootStomp - A Bootloader Vulnerability Finder

BootStomp is a boot-loader bug finder. It looks for two different class of bugs: memory corruption and state storage vulnerabilities. For more info please refer to the BootStomp paper at https://seclab.cs.ucsb.edu/academic/publishing/bootstomp-security-bootloaders-mobile-devices-2017 To run...

How to solve the Malwarebytes CrackMe: a step-by-step tutorial

The topic of this post is a Malwarebytes CrackMe—an exercise in malware analysis that I recently created. First, the challenge was created to serve internal purposes, but then it was released to the community on Twitter and triggered a lot of positive response. Thanks to all of you who sent in yo...

Disassembler and Runtime Analysis

This post was authored by Paul Rascagneres.IntroductionIn the CCleaner 64bit stage 2 previously described in our blog, we explained that the attacker modified a legitimate executable that is part of "Symantec Endpoint". This file is named EFACli64.dll. The modification is performed in the runtime...

Pharos: A Static Binary Analysis Framework

PenTestIT RSS Feed All of us know what static binary analysis means. It means that the analysis of the binary is performed without actually executing it. Almost two years ago, an open source framework - Pharos, was created by the Carnegie Mellon SEI, CERT Division in collaboration with the Lawren...

Devil's Ivy vulnerability(CVE-2017-9765)

When we began a security analysis of remote configuration services last year, we had no idea it would lead us to uncover vulnerabilities that affect so many users. We have been studying the prevalence and nature of the vulnerabilities that arise in remote configuration services, so when we...

BASS Automated Signature Synthesizer: BASS

BASS Automated Signature Synthesizer BASS pronounced “bæs” is a framework designed to automatically generate antivirus signatures from samples belonging to previously generated malware clusters. It is meant to reduce resource usage of ClamAV by producing more pattern-based signatures as opposed t...

Remote Symbol Resolution

Introduction The following blog discusses a couple of common techniques that malware uses to obscure its access to the Windows API. In both forms examined, analysts must calculate the API start address and resolve the symbol from the runtime process in order to determine functionality. After...

Remote Symbol Resolution

Introduction The following blog discusses a couple of common techniques that malware uses to obscure its access to the Windows API. In both forms examined, analysts must calculate the API start address and resolve the symbol from the runtime process in order to determine functionality. After...

Remote Symbol Resolution

Introduction The following blog discusses a couple of common techniques that malware uses to obscure its access to the Windows API. In both forms examined, analysts must calculate the API start address and resolve the symbol from the runtime process in order to determine functionality. After...

CVE-2013-2551-sample analysis and exploits and Defense-vulnerability warning-the black bar safety net

0x0 is written on the front VUPEN team in the Pwn2Own 2013 hacking contest using the vulnerability to compromise Windows 8 environment, IE10, then on their blog discloses technical details. According to VUPEN description of the vulnerability produced in the VGX. DLL module, in the VML language...

Axessh 4.2 - Denial Of Service

Axessh是一款windows下的ssh工具，使用后会开启ssh 22端口，并开启wsshed.exe服务，当wsshed.exe在接收字符串时，会调用BIGNUM相关函数进行处理，但对于BIGNUM的结构体没有进行赋初值，导致空指针引用引发拒绝服务漏洞，下面对此漏洞进行详细分析。 这里要提的一点是，Exploit-db给的PoC可以触发漏洞，但实际上，只要连接22端口，都会引发这个漏洞的发生，哪怕只发送一字节的内容。 附加wsshed.exe，执行PoC，引发中断，这边捕获到漏洞触发位置。 0:000 g f74.a68: Access violation - code c00000...

From MS16-098 see a Windows 8.1 kernel exploit-vulnerability warning-the black bar safety net

When I first started contact core vulnerability when I don't have any about the kernel of the experience, not to mention to take advantage of a kernel vulnerability, but I'm always for reverse engineering and exploit techniques are very interested. Initially, my idea was simple: find one not...

GitHub Enterprise SQL injection vulnerability

作者：Orange 前言 GitHub Enterprise 是一款 GitHub.com 所出品，可將整個 GitHub 服務架設在自身企業內網中的應用軟體。 有興趣的話你可以從 enterprise.github.com 下載到多種格式的映像檔並從網頁上取得 45 天的試用授權! 安裝完成後，你應該會看到如下的畫面: 好!現在我們有整個 GitHub 的環境了，而且是在 VM 裡面，這代表幾乎有完整的控制權可以對他做更進一步的研究，分析環境、程式碼以及架構等等... 環境 身為一個駭客，再進行入侵前的第一件事當然是 Port Scanning! 透過 Nmap 掃描後發現 VM 上一...

Open Source Malware Clusterization Toolkit: Cosa Nostra

Open Source Malware Clusterization Toolkit Cosa Nostra is an open source software clustering toolkit with a focus on malware analysis. It can create phylogenetic trees of binary malware samples that are structurally similar. It was initially released during SyScan360 Shanghai 2016. Required 3rd...

From the patch compare to the PoC to reproduce it MS16-0 3 0-vulnerability warning-the black bar safety net

MS16-0 3 0 vulnerability MS16-0 3 0 vulnerabilities Windows OLE remote code execution vulnerability, since OLE does not have the correct validation of user input, causing by the special structure of the file or the program can trigger the vulnerability, causing the user to click on after the remo...

One Click Symbolic Execution: Ponce

Ponce pronounced ‘poN θe pon-they is an IDA Pro plugin that provides users the ability to perform taint analysis and symbolic execution over binaries in an easy and intuitive fashion. With Ponce you are one click away from getting all the power from cutting edge symbolic execution. Entirely writt...

Automatically Extracting Obfuscated Strings from Malware using the FireEye Labs Obfuscated String Solver (FLOSS)

Introduction and Motivation Have you ever run strings.exe on a malware executable and its output provided you with IP addresses, file names, registry keys, and other indicators of compromise IOCs? Great! No need to run further analysis or hire expensive experts to determine if a file is malicious...