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- Bitsadmin Util And Setieproxy | Microsoft Docs
- Bitsadmin.exe /transfer
Windows 7 introduced Branch Cache Method for the BITS Transfer. When BITS downloads a file, the actual download is done behind the svchost.exe service. BITSAdmin is used to download files from or upload files to HTTP web servers and SMB file shares. Bitsadmin.exe BITS administration utility the service is designed to download files and is a standard component of all currently supported Windows operating systems. Bitsadmin.exe BITS administration utility. Background Intelligent Transfer Service (BITS) is used in Windows to download security updates. 0x80070005 bits bitsadmin cancel jobs other Remove-BitsTransfer User windows Post navigation Previous Post Windows: Cleanup Permissions from deleted Active Directory Objects Next Post Powershell: Encode and decode Base64 strings. FakeLogonScreen is a utility to fake the Windows logon screen in order to obtain the user's password. The password entered is validated against the Active Directory or local machine to make sure it is correct and is then displayed to the console or saved to disk. I also tried using BitsAdmin to cancel the jobs. I can't remove, cancel, retry, resume jobs created by NT Authority System. I can't start a command prompt as System using AT like I used to in XP, so I got tricky and downloaded PSExec and started an interactive copy of cmd.exe running in the System security context.
In this post I am just highlighting some of the ways that I know of where we can download and execute code via the commandline which could be used in command injection vulnerabilities or exploiting buffer overflows using the classic ret-to-libc method. Most of you would most probably know these methods but I thought I’d post it anyway for my own reference.
FTP method
FTP can be used to download a binary and then get executed with the start command. The downside to this method is that we’ll need to have a FTP server hosting the binary file. Nevertheless the command string length can be reasonably small.
FTP can be used to download a binary and then get executed with the start command. The downside to this method is that we’ll need to have a FTP server hosting the binary file. Nevertheless the command string length can be reasonably small.
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Here the ftp commands which are first echoed to create a script, then run the script by ftp.exe to download the binary and finally executing the binary.
![Bitsadmin.exe /reset /allusers Bitsadmin.exe /reset /allusers](https://i.imgur.com/2how0oa.jpg)
We can make the command string smaller by using o for open and b for binary. Also our script file can also be represented as a single character.
Dynamark 836 manual. WSH method
Windows Scripting Host can also be used to download and execute code. For this we again need to echo out the scripting code to a file and then run our script by cscript.exe.
Windows Scripting Host can also be used to download and execute code. For this we again need to echo out the scripting code to a file and then run our script by cscript.exe.
Below is the code that is chained up and then using cscript.exe to run our script.
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BITSadmin method
Windows 7 comes with a console tool called bitsadmin.exe which can be used to download and upload files. The cool thing about bitsadmin is that it suspends the transfer if a network connection is lost. After reconnection the transfer continues where it left off and executes our code.
Windows 7 comes with a console tool called bitsadmin.exe which can be used to download and upload files. The cool thing about bitsadmin is that it suspends the transfer if a network connection is lost. After reconnection the transfer continues where it left off and executes our code.
PowerShell method
Powershell is a scripting language which comes as standard in Windows 7. Below is a script which downloads and executes mess.exe.
Powershell is a scripting language which comes as standard in Windows 7. Below is a script which downloads and executes mess.exe.
We can echo this script to a file and then run the script using Powershell with the “bypass” parameter as by default the Powershell policy is set to “restricted”.
Bitsadmin Util And Setieproxy | Microsoft Docs
Another elegant way to run our code without any scripts is by chaining our code in one line as shown below
References:
Bitsadmin.exe /transfer
http://technet.microsoft.com/en-us/library/dd347628.aspx
http://msdn.microsoft.com/en-us/library/aa362812.aspx
http://msdn.microsoft.com/en-us/library/windows/desktop/aa362813(v=vs.85).aspx
http://msdn.microsoft.com/en-us/library/aa362812.aspx
http://msdn.microsoft.com/en-us/library/windows/desktop/aa362813(v=vs.85).aspx