Author Archives: hiddencodes

Build nwjs12 for windows

Posted on January 19, 2016 by hiddencodes

Here is the list of steps to build nwjs12 for windows: Download https://src.chromium.org/svn/trunk/tools/depot_tools.zipSet up the path for depot_toolsgclientInstall VS 2013 community editionInstall Windows 10 SDKset DEPOT_TOOLS_WIN_TOOLCHAIN=0set GYP_DEFINES=”clang=0 nwjs_sdk=0 disable_nacl=1″set GYP_MSVS_VERSION=2013mkdir -p $HOME/nwjscd $HOME/nwjsgclient config –name=src https://github.com/nwjs/chromium.src.git@origin/nw12    Add this to .gclient    … Continue reading →

Posted in browser, Chrome, Web, Windows | Tagged , , , | Leave a comment

Deobfuscate Javascript using PhantomJS (Headless browser)

Posted on June 18, 2015 by hiddencodes

Recently when i got a chance to analyze Neutrino Exploit kit capture, i noticed that Neutrino EK has a detection and check for headless browser and other JS based frameworks. One thing that is interesting about Neutrino EK is all … Continue reading →

Posted in browser, Chrome, Exploit, Exploit Kit | Tagged , , , , | 5 Comments

Angler Exploit kit breaks Referer chain using HTTPS to HTTP redirection

Posted on May 29, 2015 by hiddencodes

The author(s) behind Angler EK is known to release reliable exploit(s) for flash/IE and to use various techniques to break various logics used by analysis products for the detection. Recently a security researcher blogged about a new technique used by … Continue reading →

Posted in Exploit, Exploit Kit, Malware | Tagged , , , , | 1 Comment

Instrument Microsoft Office applications to defeat macro obfuscations

Posted on May 18, 2015 by hiddencodes

With the recent increase in documents with macros used to deliver malwares, researchers spend considerable amount of time to analyze these attached scripts to understand the inner workings. Though the macros does follow the similar pattern in file download and … Continue reading →

Posted in Document Macro malware Analysis, Exploit, Malware, Malware Analyzer | Tagged , , , , | 1 Comment

Dealing with pcaps in windows using Fiddler/FiddlerCore

Posted on April 30, 2015 by hiddencodes

Many a times when we receive a pcap(especially exploit packs pcaps) for malware analysis purpose we had to do lot of manual work to load it in Fiddler and extract the objects and analyze those. While using windows, i depend … Continue reading →

Posted in Malware, Malware Analyzer, Tools, Web, Windows | Tagged , , , , , , | Leave a comment

Extend Sulo to find the CVE of Flash exploits

Posted on February 25, 2015 by hiddencodes

In this blog, i like to discuss more about detecting the vulnerability triggered by a particular exploit using Sulo. I have extended it to detect few of the recent vulnerabilities. I have added code to detect CVE-2015-0310, CVE-2015-0311 and CVE-2015-0313. … Continue reading →

Posted in browser, Exploit, Exploit Kit, Flash, Flash Exploit Analysis | Tagged , , , , , , , | 1 Comment

Understanding CVE-2015-0310 Flash vulnerability

Posted on February 20, 2015 by hiddencodes

The Flash vulnerability CVE-2015-0310 is fixed in recent patch from Adobe. The vulnerability is in RegEx result parsing code. The vulnerability affects all the version below 16.0.0.287 and patched on January 2015. Though Adobe didn’t provide much information about the … Continue reading →

Posted in Exploit, Exploit Kit, Flash, Flash Exploit Analysis | Tagged , , , , | 2 Comments

Build and use PCRE in windows

Posted on February 18, 2015 by hiddencodes

Building PCRE(older version) source code in windows environment is quite easy with CMake build system. Once you checkout the code from their SVN server using following command:    svn co svn://vcs.exim.org/pcre/code/trunk pcre Install the CMake build system and issue the following … Continue reading →

Posted in Regex, Windows, Windows VC++ | Tagged , , | 1 Comment

Compile avmplus in windows

Posted on February 11, 2015 by hiddencodes

In this post, i like to document the process and changes needed to build the avmplus in windows environment. Though Adobe provided the solution file, it didn’t work in the first try. If you understand the vcproj file format, its … Continue reading →

Posted in C/C++, Flash | Tagged , , , | 2 Comments

Defeat initial packers used in flash exploits using Sulo

Posted on January 29, 2015 by hiddencodes

Using Sulo it is quite easy to defeat the initial packers used in the recent flash exploits. All we need is setting up one VM environment as i mentioned in my previous blog and in Sulo Github page. Once you … Continue reading →

Posted in Exploit, Exploit Kit, Flash Exploit Analysis | Tagged , , | 8 Comments