Wildcards Spare tricks
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You can indicate which file owner and permissions you want to copy for the rest of the files
You can exploit this using (combined attack) More info in
Execute arbitrary commands:
You can exploit this using (tar attack) More info in
Execute arbitrary commands:
In 7z even using --
before *
(note that --
means that the following input cannot treated as parameters, so just file paths in this case) you can cause an arbitrary error to read a file, so if a command like the following one is being executed by root:
And you can create files in the folder were this is being executed, you could create the file @root.txt
and the file root.txt
being a symlink to the file you want to read:
Then, when 7z is execute, it will treat root.txt
as a file containing the list of files it should compress (thats what the existence of @root.txt
indicates) and when it 7z read root.txt
it will read /file/you/want/to/read
and as the content of this file isn't a list of files, it will throw and error showing the content.
More info in Write-ups of the box CTF from HackTheBox.
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You can exploit this using (_rsync _attack) More info in