![]() ![]() ![]() It uses Cobalt Strike's execute-assembly function so it will inject into a sacrificial process like other post ex jobs.If using the AMSI bypass it will modify the registry by either updating or creating a registry key then setting it back to its original value or deleting.If using the AMSI bypass it will only work for WSH not PowerShell.If using SCM services will be created and deleted.If using task scheduler scheduled tasks will be created and deleted.By default these are $$PAYLOAD$$ and base64. Example for C#:īyte sc = Convert.FromBase64String(strSC) Ī change was added that allows for the defaults to update the 'Find and Replace string' and the shellcode formats in the 'Update Defaults dialog'. Second, the source code must contain the string $$PAYLOAD$$ where base64 encoded shellcode will go and be able to convert a base64 string to a byte array. First, the template must be named the technique (example: msbuild.csproj). To replace a template you must meet two requirements. Note: It is recommended not using the default templates with the project. The kit does not automatically clean up files, it is left up to the operator.Sometimes execute_assembly will be called before file movement, if this happens you can execute the payload by unchecking the Auto check box.NET assemblies (Used with dynamic payload creation, InstallUtil, and Custom-NonPreBuilt). ![]() Modify Service binpath (Existing Service has binpath updated, service is started and reset back to original state).Modify Scheduled Task (Existing Task has action updated, executes task and resets action).The kit contains different file movement techniques, execution triggers, and payload types.įile movement is considered the method used for getting a file to a remote hostĬommand trigger is considered the method used for executing a specific command on a remote host. However, if a payload is already created users can select to use the Custom (Prebuilt) option to move and execute it. However, if the file is above the 1MB file size limit then it will show an error.įor all file methods the payload will be created through the aggressor script. Finally, if the location field is a linux path or the word local then it will dynamically compile the payload into the assembly being executed. Second, if location is a Windows directory then it will upload the created file to the beacon host and the assembly will read it from the file system and store in the event sub to write to the remote host. The beacon host where the assembly will be executed from will make a web request to the URL and grab the file, which will be used in an event sub on the target host to write the file. First, it location is a URL then when the payload is created it will be hosted by Cobalt Strike's web server. When selecting WMI file movement location will be used, if SMB is selected then it will not be used (so it can be left empty). The location field is the trickiest part of the project. Move-pre-custom-file computer001.local /root/payload.exe legit.exe Move-msbuild 192.168.1.1 http move.csprojĪdditionally, the custom pre built beacon command is a little bit different. To use the beacon commands it will read the default settings and use a few command line arguments. The default settings are used for anything that can accept a default. Finally, there is a Default settings to make using GUI faster and used with beacon commands. There is Write File Only that does not do any execution, move data only. Third, the File method drops a file on the system and executes it. Second, there is the Command execution mechanism which uses download cradles to grab and execute the files. First, users can select to execute a command on a remote system through WMI, DCOM, Task Scheduler, RDP, or SCM. There are multiple selections a user can select. When loading the aggressor script there will be a selector loaded to the menubar named Move. Finally, some of the file moving requires dynamic compiling which will require Mono. Additionally, depending on actions taken the SharpMove and SharpRDP assemblies will need to be compiled and placed into the Assemblies directory. IMPORTANT: To use the script a user will only need to load the MoveKit.cna aggressor script which will load all the other necessary scripts with it. The aggressor script handles payload creation by reading the template files for a specific execution type. Movekit is an extension of built in Cobalt Strike lateral movement by leveraging the execute_assembly function with the SharpMove and SharpRDP. MoveKit - Cobalt Strike lateral movement kit
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