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Defend ASP.NET and WCF from Various Attacks using Nginx

by Omar Al Zabir

Protect ASP.NET and WCF from various brute force and Denial of Service attacks and speed up response time using nginx.

Basic x86-64bit Buffer Overflows in Linux

by Oscar-Tark

If you are looking into white hat hacking, it's good to know old school tactics used for overflows.

A Simple 32bit Ret2libc Attack in Linux

by Oscar-Tark

In this article, we will be looking at a more advanced version of a buffer overflow attack.

Develop Your Own Language Translation System

by anshulskywalker

Understanding of Example Based Machine Translation (EBMT) system and how to create your own using exisiting tools

Latest Articles

On How to Mix Two Signals by using Spectral Forecast

by Paul Aurelian Gagniuc

This article shows how to mix two signals into a third, in variable proportions.

A Simple 32bit Ret2libc Attack in Linux

by Oscar-Tark

In this article, we will be looking at a more advanced version of a buffer overflow attack.

Basic x86-32bit Formatted String Exploits in Linux - Part 1

by Oscar-Tark

A basic formatted string exploit shows you how small errors in programming with the printf function can be a lethal weapon for hackers looking to compromise a system.

Migrating your SQL Server Workloads to PostgreSQL – Part 2

by Shameel

Part 2 of this multi-part article series compares SQL Server and PostgreSQL article, database structure, language differences, data type mappings, functions and operators and other important considerations for migration..

All Articles

Perl

Defend ASP.NET and WCF from Various Attacks using Nginx

28 Jul 2016 by Omar Al Zabir

Protect ASP.NET and WCF from various brute force and Denial of Service attacks and speed up response time using nginx.

Basic x86-64bit Buffer Overflows in Linux

30 Aug 2019 by Oscar-Tark

If you are looking into white hat hacking, it's good to know old school tactics used for overflows.

A Simple 32bit Ret2libc Attack in Linux

27 May 2021 by Oscar-Tark

In this article, we will be looking at a more advanced version of a buffer overflow attack.

Develop Your Own Language Translation System

10 Aug 2010 by anshulskywalker

Understanding of Example Based Machine Translation (EBMT) system and how to create your own using exisiting tools

On How to Mix Two Signals by using Spectral Forecast

20 Mar 2022 by Paul Aurelian Gagniuc

This article shows how to mix two signals into a third, in variable proportions.

Retrieve an HTML Page from Within Your (ASP-)Scripts Without Any Components

28 Aug 2001 by Uwe Keim

Tiny little Perl library to retrieve an arbitrary URL as a string

Extracting hydrophilic regions

20 May 2010 by Sauro Viti

This looks like homework... Why don't you try doing it by yourself? After that if you have problems with some specific issue you can ask here: post a code snippet of what you have done, and a description of what doesn't work like you expected.

Is there any English dictionary including pronunciations?

4 Apr 2011 by eh.azimi

You can use "Lingoes" dictionary. It is a free powerful dictionary. Follow link:http://www.lingoes.net

How to choose a language for begining your career as a developer?

8 Oct 2011 by Mehdi Gholam

Career language choices usually involve what jobs are out there in the market place.The best advise is to learn as much as you can and see where that takes you, and which language you prefer and is easier for you.What is important is not the language itself but the logical problem...

How to choose a language for begining your career as a developer?

8 Oct 2011 by Sander Rossel

What do you mean with "a background in C, Java, COBOL, Perl and Python"? That does not sound like you are a starter. Anyway, it's a nice point to start. Pick up any of those languages. Isn't Java the most popular programming language in the world and aren't Java programmers paid the best as well...

Parsing a file in Perl

19 Oct 2011 by fjdiewornncalwe

You could do this in a couple of different ways.The best would be to create the appropriate regular expression to clean the data as you want it, but another solution could be to do the following and then just add in a check for non-numeric characters in each column: I found this...

Is there any tool which converts .bat file into .pl file?

14 Oct 2015 by Jochen Arndt

You won't be able to find a batch file to Perl converter or vice versa. pl2bat is not a converter. It is a tool that creates a batch file that is executing perl and passes the perl code contained in the same file (see here for an example:...

Basic x86-32bit Formatted String Exploits in Linux - Part 1

29 Feb 2020 by Oscar-Tark

A basic formatted string exploit shows you how small errors in programming with the printf function can be a lethal weapon for hackers looking to compromise a system.

How to handle UTF8 format characters?

12 Feb 2010 by Kythen

Ten seconds with our friend Google gave me this: http://perldoc.perl.org/utf8.html[^]

View and operate program from inisde a program or presentation on Mac

16 Jan 2011 by Dan_Sc

I am working on a thesis project and would like to run the program X-Plane for Mac from within a presentation (the presentation could be it's own program if necessary). At one point in the presentation, I would like X-Plane to be framed inside a slide and be able to operate the program with...

order of elements in hash , perl . i am not getting the values in order in which i defined in hash

16 Feb 2011 by jswolf19

Hashes in perl are called hashes because they store the data in a hash table. Hash tables use a hash function to calculate a key based on the value you give it and allow for fast searches at the expense of memory.Using your example, say the hash table has 26 entries, and the hash function...

Get results to write to CSV using Perl

19 Jul 2011 by Uilleam

I believe your error is rooted in not really understanding the meaning of my. You are using it all over the place, but when you do that you are creating a new variable in the enclosing block. You should really go back and check every instance of my to see if that is what you really want to...

How to choose a language for begining your career as a developer?

16 Oct 2011 by Espen Harlinn

If you have a background in COBOL – recruiters for insurance companies have been looking for you for a while – if you can translate COBOL to java and/or c#, and that seems likely, they’ll probably be even happier to have a chat with you ...Best regardsEspen Harlinn

Novel curves generation project

24 Mar 2012 by Sergey Alexandrovich Kryukov

I'm really afraid my help could be not very useful. I'm presenting a complete solution based on .NET and C#. The problem is way too simple: just a combination of two rotations. If you did not know how to calculate that, I would afraid just using the code would also be a problem. Anyway, let's...

an algoritm to create FSA for strings

17 Mar 2013 by Matthew Faithfull

Right now you probably know more about this than most people here as you're in the middle of it so you may get a better response by having a go at it and asking more specific questions when you get stuck. It's been a very long time since I looked at anything like this so don't take my word for...

Change the screen display resolution of the system

5 Jun 2014 by Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

Try Google[^] first and try yourself.Here we answer specific questions which members face during programming. We can't work on the whole source code. You need to do that yourself.If you face any difficulty while coding, feel free to come back here and ask another question with specific...

C++, bash, perl, R, python, ruby, nodejs, go, haskell

20 Aug 2014 by Richard MacCutchan

C++a programming language widely used in Windows and Unix/Linuxbasha shell used on Unix/Linux systemsperlanother scripting language. Ugh!Ra capital letterpythona snakerubya jewelAnd if you do not know what the internet is then I am quite surprised you managed to find this...

Hosting Without Limits: A Review of 1&1 Internet’s Unlimited Package

4 Mar 2015 by rjdudley

1&1 has become one of the most successful and popular hosting companies in the world by offering simple, inexpensive ($0.99/month for three months, then $8.99/month thereafter) and feature-rich hosting plans.

Extract most active IP Addresses from a file

22 Dec 2015 by Richard MacCutchan

I already gave you a suggestion yesterday in your original of this question[^].

How can I remove the particular files from all folders using Perl?

7 Mar 2017 by Jochen Arndt

Use my solution to your question How do I remove the subdirectories from the directory struture using Perl?[^] as starting point (untested EDIT: tested and fixed errors):sub DelTaskFiles{ my ($workdir) = shift; #print "Processing '$workdir'\n"; my $mask = $workdir . '/*'; #...

Extracting Images from a RESX File

6 Jul 2017 by Simon Sparkes

A simple way of extracting all images from a RESX file using a simple perl script

How to generate sequence number and append to line before pattern match in a file

17 Mar 2021 by CPallini

Try fin = open('input.txt', 'r') fout = open('output.txt', 'w') linesin = fin.read().splitlines() seqnum = 1 previous = None for lin in linesin: if previous != None: if lin == 'APPLE': previous += str(seqnum) seqnum = seqnum +...

Can I run Perl script in IIS express 10

4 Jan 2024 by Richard MacCutchan

Yes, whether it will work or not is a different matter.

HOW TO install DBI & DBD correctly on linux!

3 Mar 2010 by Graham Breach

The simplest way to install Perl modules is to use CPAN:% perl -MCPAN -eshellCPAN[1]> install DBIIn your case it looks like you are missing some headers - try installing the kernel-headers RPM (using up2date, yum, apt-get, etc.) before trying to install DBI.

Send E-mail to Muti Receipients in PHP

10 Jun 2010 by Peter_in_2780

The error message says it all:Chetrabbu wrote:verify your "SMTP" and "smtp_port" setting in php.ini or use ini_set()You need to tell your PHP environment how to contact an SMTP server. There obviously isn't a local one running, so you need to either set one up or use your ISP's one. To use...

8 queens solution via the hill climbing algorithm

17 Nov 2010 by Manfred Rudolf Bihy

Hi Matthew,this kind of smells like homework, but I'll give you a couple of hints anyhow.I hope you understand the 8 queens problem so I wont go into that."Hill Climbing" algorithms start at a randomly selected start point, andtry to do small gradual optimizations trying to obtain a...

artificial-intelligence

Reading in Large Text File

2 Dec 2010 by wizardzz

As far as using StringBuilder, it is good to be aware of its uses even if it is not the problem. You can use it instead of string but it is not an exact replacement. On a high level, it simply makes better use of memory than a string because it does not recreate a string every time you modify...

View and operate program from inisde a program or presentation on Mac

16 Jan 2011 by #realJSOP

I think the only way you could pull this off is if the application in question could be constrained in a window that your own application creates. Since X-Plane is a game, and since most game companies would never even consider running their game in a window that wasn't borderless and full...

View and operate program from inisde a program or presentation on Mac

16 Jan 2011 by Espen Harlinn

One alternative could be to use VNC.Here is an osx compatible product:OSXVNC[^].You should be able to embed a VNC client inside your presentation program.RegardsEspen Harlinn

Perl/soap lite script

2 Feb 2011 by Manfred Rudolf Bihy

If I'm not completely mistaken I think that the backslash is an escape character in Perl. So if you really mean to use it will have to escaped as well:{\\rtf1\\ansi\\ansicpg1252\\deff0\\deflang1033{\\fonttbl{\\f0\\fswiss\\fcharset0 Arial;}}From the look of the start of your file it...

Perl script convert to C#

30 Mar 2011 by OriginalGriff

AFAIK, there is no such tool: the possibility of eval($string) makes it unlikely! If it is that small, I would suggest you will find it quicker to do it manually.

Is there any English dictionary including pronunciations?

2 Apr 2011 by Hans Dietrich

I don't know if these meet all your requirements, but there are some free dictionaries available here: http://www.dict.org/w/databases/dict[^]

Is there any English dictionary including pronunciations?

11 Dec 2011 by Sergey Alexandrovich Kryukov

Well, this is a problem. And the problem is not just the dictionary, but the dictionary format.The only open format I know is XDXF, see http://xdxf.sourceforge.net/[^]. This standard supports Unicode (of course, as it is XML-based); and one important point of using Unicode was support of...

Learning Perl - Perl Tutorial

12 Jul 2011 by Uilleam

It would be good if you would show what you have tried, but in absence of that, I think all you likely need to do is look up printf, and use a format like %03d. Assuming you have a decent Perl installation, you should be able to find out all you need at the command line with perldoc -f sprintf....

Learning Perl - Perl Tutorial

12 Jul 2011 by mla154

Here is a program that prints line numbers:$file = 'results.log';open(INFO, $file);$count = 0;while ($line = ){ $count++; print "$count $line";}close(INFO);According to the tutorial, to solve the second part, one only needs to change one line by inserting an extra four...

How to choose a language for begining your career as a developer?

16 Oct 2011 by Abhinav S

It would depend a lot on the area where you are located and what opportunities you have around you.Java would probably be the right choice in terms of number of opportunities.However, if you can carve a niche for yourself in C and Cobol, you are likely to get paid more as there is less...

find and replace in perl

16 Oct 2011 by RaviRanjanKr

This link-[Search and replace across many files with a perl one-liner][^] might help you.

How can i do some simple matrix operations in Perl

4 Nov 2011 by E.F. Nijboer

You might want to add this first:use PDL;If it still can't find the library. You need to specify the path to it or add it to the environment.use lib "./PDL-2.4.3";Check out this link for more info:http://docstore.mik.ua/orelly/perl/prog3/ch31_13.htm[^]Good luck!

Can a semi-continuously running Perl script call a javascript return protocol?

12 Nov 2011 by Oliver Bleckmann

Are you talking about a voice chat? This may be a hard task and the hosting well be even harder (a lot of traffic). For a text chat see this example here http://sourceforge.net/projects/ajaxperlchat/[^] using perl and ajax. But be aware, most hosting companies limit the execution time and...

want to learn about "perl" for me

8 Dec 2011 by #realJSOP

296 MILLION google results regarding "perl"[^]...and you couldn't find the info you seek?

Concatenation of two verialbes in perl

23 Dec 2011 by Graham Breach

Your $baseStream variable is including the newline character(s). Try this:print "Enter the name";$baseStream = ;chomp $baseStream;$b = 1;$strName = "${baseStream}_Strm_${b}";print $strName;"chomp" is a function that removes the line separator from the end of a string.I've...

How to backup multiple databases using Perl

7 Jan 2012 by Carlos Luis Rojas Aragonés

How to backup multiple databases using Perl

Concatenation of two verialbes in perl

5 Jan 2012 by mahalatchumi

Hi, Remove the chomp and use concatenation operator(.).

Hierarchical tag closing

6 Jan 2012 by Andreas Gieriet

Classical application of XSLT: XML to XML.

Novel curves generation project

20 Mar 2012 by nv3

Ok, I think that I now know what you mean. Let me repeat it in my words, so you can cross check that I have understood your goal. We have two wheels (circles) mounted with their axels in different positions and touching each other at the 12 o'clock point. Both rotate with 1 rpm. On each wheel...

Help Choosing Programming Language!

5 Apr 2012 by nv3

In my opinion, OriginalGriff has given a very good description what awaits you with C++ and .Net. But before you decide, which programming language to pick as your first one (others will follow!) consider the following:- The programming language is most often the easiest part to master....

Move image files from one Directory to Directory in perl

10 Jul 2012 by Wes Aday

rename OLDNAME, NEWNAMEhttp://forums.devshed.com/perl-programming-6/moving-files-in-perl-7833.html[^]

Convert px to em, pt to em

11 Jul 2012 by Richard MacCutchan

Yes, and it's really quite easy to find[^].

How to pipe console apps

13 Jul 2012 by Carlos Luis Rojas Aragonés

Simulate user interaction in console apps with perl

Unable to search for a string in a file and output the line in another file

28 Jul 2012 by David Jeske

You can begin by reading some regex documentation. The trailing "\s*" does nothing. It is interpreted as zero or more occurances of a whitespace character.Here is a simple to understand regex review ...http://www.cs.tut.fi/~jkorpela/perl/regexp.html[^]As for more specific trouble.....

How to use array values as key in hash ?

15 Aug 2012 by Faez Shingeri

@func is an array containg names. I want to assign values to each name as below, but it does seem to work.for ($i=0;$i

How to use array values as key in hash ?

15 Aug 2012 by Faez Shingeri

This solved my issue :-Dfor ($i=0;$i

How to add a Perl module in eclipse ?

30 Sep 2012 by Maverick143

use following linkhttp://www.perlmonks.org/?node_id=646596[^]Thanks,-Mangesh.

Clear the Browser History using PHP

6 Oct 2012 by Manfred Rudolf Bihy

That's easy to do by adding a dummy random parameter to the image URL like this:Instead of using a random number you could just use an increasing counter that gets incremented every time you change the images.Another approach would be to...

web_development

Calling Oracle StoredProc using Win32:ODBC

18 Jan 2013 by Hasham Ahmad

try this??my $ST=$DB->prepare("call apps.package_name.proc(?, ?, ?)");my ($ST_result, $arg1, $arg2);...$ST->bind_param(1, $arg1);$ST->bind_param(2, $arg2);$ST->bind_param_inout(3, \$ST_result, 0, { ora_type=>ORA_RSET } );$ST->execute();while (my $hr =...

how i get my own web language ?

23 Feb 2013 by Pranit Kothari

Fortunately many of the languages you mentioned are open source. Download their code, try to understand it. Very first step is to able to work with these languages and technology. I am not sure weather you are able to program (professionally) using HTML and PHP etc.

Sending large data over COM interface

25 Aug 2013 by H.Brydon

What you want to learn about is "Data marshalling" and "serialization". Google should give you many links that are helpful.

Execution file exited with error code 0

30 Jan 2014 by Kornfeld Eliyahu Peter

There is no error - error code 0 means, no error!

[Not a question] Please I need a perl code for transforming relational algebra query statement (project, select, etc) to sql

16 Feb 2014 by OriginalGriff

It doesn't quite work like that.We do not do your work for you.If you want someone to write your code, you have to pay - I suggest you go to VWorker.com and ask there.But be aware: you get what you pay for. Pay peanuts, get monkeys

Change the screen display resolution of the system

5 Jun 2014 by johannesnestler

Hi Prakash,Have a look at Dynamic Screen Resolution[^]In short, the Windows-API function[DllImport("user32.dll")] static extern int ChangeDisplaySettings(ref DEVMODE devMode, int flags);does the trick. I see you are a quite new member here on CP, so some "advice"...

How do I manage large databases and create displays based on the data?

31 Jul 2014 by KarstenK

Thats a lot of questions. You can stay on the Mac because it has the power of C++ in its language Objective C. Register by Apple to access the online documentation: it is fine and has some sample. Tip: Consider NOT using the new language Swift, because the web is full of objective C...

Add + 1 after every 100 loops in Perl

10 Aug 2014 by Groulien

Inside your 'for' loop:if (i % 100 == 0) { $nr += 1;}

Can I Make Same Software Like Tally Into C# / Java / any other

27 Oct 2014 by Prasad Khandekar

Hello,Have a look at following Open Source Projects, They should help you get started. Please note that these projects are not developed in C# though.GnuCashSQL LedgerTurbo CASHRegards,

I Have A Store Procedure To Update A Table Against Parametrised Variable Then How Can I Execute

14 Aug 2015 by Wendelius

Based on the tag you're using Perl. In that case you can use a question mark (?) as a place holder for the parameter and then use bind_param to set the value for the parameter before execute.Have a look at:- A Short Guide to DBI[^]- 5.3. Binding Parameters to Statements [^]

How should I restrict direct url access to a form mail script in perl-cgi?

23 Oct 2015 by Sergey Alexandrovich Kryukov

As a first line of defense, you can check up the HTTP referral, which is one of the HTTP header fields of an HTTP request:https://en.wikipedia.org/wiki/List_of_HTTP_header_fields#Request_fields[^],https://en.wikipedia.org/wiki/HTTP_referer[^].All scripting modules for all non-nonsense...

How to enable perl in apache 2.2 under RedHat?

25 Oct 2015 by Andreas Gieriet

Google?E.g. enable perl apache?E.g. http://www.perlmonks.org/?node_id=9060[^].RegardsAndi

Point Inside 3D Convex Polygon in Perl

6 Feb 2016 by John Jiyang Hou

An algorithm to determine if a point is inside a 3D convex polygon for a given polygon vertices in Perl

Generate all combinations with restrictions

20 Apr 2016 by Richard MacCutchan

Try some research: perl split string - Google Search[^].

Is it possible to write into and generate "(not execute)" a Perl script from VBA ?

9 May 2016 by AnvilRanger

A perl script is just another text file with a pl extension. You can use VB or VBA to write to a text file.You tagged the question VBA, but then as VB in the actual question. Which are you really using? Because writing to a file is different between the two.VBA:VBA - Text...

Why my filehandle $fh2 not prints its statement using Perl?

21 Feb 2017 by Jochen Arndt

That is because the file result_file.txt is still opened for writing and the content has not yet been written physically (flushed) when you are opening it again for reading.While you can force flushing using $fh1->flush(), a better solution is closing file handles when not needed...

How to read the directories and sub directories using Perl variable?

21 Feb 2017 by Jochen Arndt

See the file test operations at perlfunc - Perl builtin functions - metacpan.org[^].use Cwd;my $curdir = cwd();if (-e $dir && -d $dir){ print "$dir is an existing directory at $curdir\n";}

How do I remove the subdirectories from the directory struture using Perl?

1 Mar 2017 by Jochen Arndt

You have to iterate over the directories.A possible solution:use File::Basename;sub ProcessDirectory{ my ($workdir) = shift; print "Processing '$workdir'\n"; my $mask = $workdir . '/*'; # glob: Return list of filename expansions for search mask # grep -d:...

Why my command line arguments throw an error?

5 Mar 2017 by Jochen Arndt

You are using GetOptions at one place and access command line arguments via $ARGV at other places. When using GetOptions, all matching arguments are removed from $ARGV[].So when executing the script with./generate.pl -prjroot "/home/rpsa/EMO/ct_space" -outdir "/home/rpsa/output" -mapfile...

Regular expression to remove the lines which have equal to sign in my file using Perl?

9 Mar 2017 by Jochen Arndt

Your expression looks for optional white spaces (\s*) followed by an equal sign. Change it to match any characters before the equal sign:$href=/^.*=.*\n//g; Or if there is alway text (letter, digit, or underscore) without spaces:$href=/^\w+=.*\n//g;

How do i...how to remove underscore from each line using Perl regular expression?

15 Mar 2017 by Jochen Arndt

You can't use a transliteration for this because those operate on characters from a list but you want to match the substring _..So you have to use a regular expression:$str =~ s/_\././g;s: Search and replacepattern _\.: underscore and dot (dot must be escaped)replace with .: dot...

Loop with break or without

27 Oct 2017 by CPallini

I usually go with the first option (even with return, if appropriate) because of less code to type and see. However it is just personal taste.

Loop with break or without

27 Oct 2017 by W∴ Balboos, GHB

I would prefer the internal break - it's absolutely clear and makes it easier to follow if one has, for example, multiple handlers for a desired value and a break; Alternatively, the while() test could grow and grow, becoming more difficult to understand and easier to code with errors. Also,...

Loop with break or without

27 Oct 2017 by Patrice T

My like goes to first option. But I use both depending on situation, there is no absolute rule.

Loop with break or without

27 Oct 2017 by BillWoodruff

I don't think the two examples shown are comparable. When the loop on the second example exits, information persists in a variable 'tentatives that will tell you how many iterations occurred to find the match ... if it found the match. The first example does not persist the iteration count. The...

Developing multi-language applications?

5 Feb 2018 by CPallini

Using different programming languages makes the developer take adavantage of both (or more) language features. In a typical sceneario, you embed a scripting language (e.g. Lua or Python) into an application (written with a non-scripting one like C++, C# or Java) to make it easily customizable to...

I wanna covert this PHP code to Perl plzz help

9 Jun 2018 by Richard MacCutchan

PHP and Perl are two completely different beasts. And as it is a school project you should do your own homework, rather than expecting someone else to do it for you.

Getting started on creating a program to play craps

29 Sep 2019 by Dave Kreskowiak

If you're not familiar with Perl, what do you want from anyone answering this? Step 1: You MUST learn the language before you start writing code in it.

How can I check any particular product present in hash in Perl?

24 Aug 2020 by Sandeep Mewara

You can use exists() function. # Calling the exists() function if(exists($fruit{'apple'})) { print "Exists\n"; } else { print "Not Exists\n" } Refer: Perl - Hashes - Tutorialspoint[^]

How can I check any particular product present in hash in Perl?

24 Aug 2020 by Garth J Lancaster

For the first part, you could think about using the 'exists' Perl keyword, as in : if (exists($fruit($praticular_product)) { print "Found Apple in fruit\n"; } else { print "Apple not found in fruit\n" } you can use 'for' to iterate (loop...

A state is divided into R*C cities.the government has launched an initiative to find the cities which are dominated by coders.

25 Nov 2020 by OriginalGriff

You're running late - the rest of your class was trying to get us to do this homework last week ... But I'll tell you what we told them: Quote: We are more than willing to help those that are stuck: but that doesn't mean that we are here to do it...

How do I make this script read same user and password ?

28 Sep 2021 by OriginalGriff

We do not condone, support, or assist in the production of malicious code in any way, form, or manner. This is a professional site for professional developers. If you want to know how to create such things, you need to visit a hacking site: but...