Archive for the ‘Tips & Tricks’ Category

Patching Security Holes With OllyDbg (Part 1/3)

Posted by rajivvishwa On February - 10 - 2009
This entry is part 1 of 3 in the series OllyDbg

OllyDbg is a 32-bit assembler level analyzing debugger for Microsoft Windows. This machine level debugger is created by Oleh Yuschuk for the 80×86. OllyDbg traces registers, recognizes procedures, loops, API calls, switches, tables, constants and strings. These features can be utilized to understand how an application internals.

Introduction

Ollydbg mainly has 4 windows in the default layout. CPU Window, Registers, Memory Stack and HEX Dump window. We will be working on CPU window most of the time.

ollydbgrefscreen

OllyDbg Download : Download

A set of 3 tutorials illustrated here explains on how effectively can OllyDbg be used to identify the security holes and to ensure that the code written is healthy.

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Quickly Switch Between OpenDNS And Direct Connection With NetSetMan

Posted by rajivvishwa On February - 3 - 2009

OpenDNS is a service which provides parental control solution by filtering the sites based on the URL entered by the user. OpenDNS can be easily setup by replacing the DNS nameserver provided by the ISP to the OpenDNS specific one. By changing the settings as in when required we can switch from direct connection/OpenDNS and vice versa. But this might be a tedious task to go and change the LAN settings when one might want to do it frequently. Let us find a work around for this.

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Top 15+ Firefox Sidebar Apps-No addons required

Posted by rajivvishwa On January - 17 - 2009

We access few of the sites very frequently that we tend to keep a tab in the browser for it reserved. But why keep too many tabs open? Or why should we switch our tabs frequently to check for new mails/chats. Add those sites in your firefox sidebar easily

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FileReplicator – Searches and Replaces Multiple files

Posted by rajivvishwa On January - 5 - 2009

FileReplicator is a handy tool for developers who keep multiple copies of the files in different folders, updates a single file and want to update all of them in a single stroke. This can help in updating a particular folder with the new set of files without having to search the older ones manually. This simple tool can be very much helpful and save pretty amount of time if you frequently update the files and want to maintain consistency all over.

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Compare Files With Portable App – Comparer

Posted by rajivvishwa On January - 5 - 2009

Comparer is a tool which compares properties of the two files and displays the results. The advantage of this tool is we can choose the properties used for comparing the files. It uses Total Commanders content plugins like image size, digicam exif, crypto hash calc, etc. as parameter which displaying the comparison results. This tool can help people who keep multiple versions of the edited files at different folder locations and with the same name. Read the rest of this entry »

Tricks with Notepad++

Posted by rajivvishwa On January - 3 - 2009

Notepad++ is an amazing text editor which not just gives you option to edit and save your text files, but also gives lot many features which can help you in doing magic.

Few of the useful options available are listed below. Experiment yourself and unveil the power of Notepad++

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Creating Portable Apps with UniExtract

Posted by rajivvishwa On December - 30 - 2008

We can carry our favorite portable apps in USB sticks and external harddisks which can be used anywhere without even leaving a trace in the guest PC. There are few sites which allow us to download those for free. But their repository is limited and that might not include the apps we wanted in portable version.

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Detect the Hotkeys used by various apps

Posted by rajivvishwa On December - 14 - 2008

detecthotkey iconSome of the applications registers its default hotkey globally, which means it can be invoked any time by pressing the specified key combination. Many a times different apps uses same hotkey and ultimately results in conflict. Take Launchy for instance, it registers ‘Alt+Space’ hotkey by default. But if any new application installed uses the same hotkey, Lauchy will end up in popping a warning saying that it is not able to register its hotkey so configure an alternate one. This might sometimes be annoying because you might be using that hotkey for years and suddenly you are asked to change it just because who don’t know which is the other application creating the conflict Another scenario is while writing your own AutoHotKey scripts. You might want to assign a shortcut for the application you have created but have to make sure that it is not taken by any of the others. To resolve all these we have something called as Hotkey detector. Read the rest of this entry »

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