Cryptculator

With the recent CTF’s I’ve played, I thought of coding an app to calculate big numbers easily, instead of manually programming. At times playing with big numbers is painful. I have written this in MASM32 and have used biglib for big numbers.

Download:
https://github.com/OsandaMalith/Cryptculator/releases/tag/v1.33.7

A Simple API Monitor

This is a simple Windbg script to monitor common Win32 API calls and display the strings, IPs, Ports, Registry keys passed to the APIs. The Win32 API is huge and I have used common APIs used by programs and malware. I coded this for fun 🙂

Usage: ApiMon.wds run; g;

You can remove APIs as you wish to minimize the output or you can add any API you desire. For example

bp DLLName!APIName @"$$>a<${$arg0} APIName FileNamePtr

bp kernelbase!CreateFileA @"$$>a<${$arg0} CreateFileA 1";

This is a sample output that uses CreateProcess API.

This is from running netcat.

Download: https://github.com/OsandaMalith/ApiMon
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Exe2Image

This is A simple utility to convert EXE files to PNG images and vice versa. This is written using Java 8. Inspired by this article.

View post on imgur.com

Putty.exe converted to an image using green pixels.

View post on imgur.com

Download:
https://github.com/OsandaMalith/Exe2Image/releases

This tool was added to PentestBox : https://modules.pentestbox.com/#forensics

Softpedia:
http://www.softpedia.com/get/Security/Encrypting/EXE-to-Image-Converter.shtml

Other Shares:
http://www.kitploit.com/2017/09/exe2image-simple-utility-to-convert-exe.html

LFi Freak – An Automated File Inclusion Exploiter

I am sure you know about exploiting file inclusion vulnerabilities. In file inclusion situations in common we can read files arbitrarily in the system or remotely depending on the permissions. In PHP environments commonly we poison the log files or inject malicious PHP into the user agent header and load the “/proc/self/environ” file. However when we encounter file inclusion situations in PHP environments we can use the in-built PHP wrappers to make our exploitations much easier or perhaps bypass existing filters.

There are lot of LFI exploitation tools available but I’ve written this tool mainly focusing on the usage of “php://input”, “php://filter” and “data://” methods.  Even though the title explicitly conveys “LFI Freak” this can be used for RFI vulnerabilities as well. This tool is written in Python 2.7 and I have included binaries for both Windows and Linux systems. If you are running from the source or want to modify this, you need the BeautifulSoup library.

Here is a small walkthrough of the features of the tool.

To test for local or remote file inclusions you can use the option one “Automated testing”. I am using DVWA in here. To test this tool create a small vulnerable file.

<?php
	echo "File included: ".$_REQUEST["page"]."<br>";
	$file =  $_REQUEST["page"];
	include $file;
?>

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