Privilege Escalation: Linux – Demonstrate Your Skills

Question

Hello,I’m doing the Lab "Privilege Escalation: Linux – Demonstrate Your Skills".I’m stuck on the second part regarding the FILE-SRV-DEV,&nbsp;I’ve found with linPEAS a file ( /usr/bin/base64) with the SUID but I don’t know if I am on the right way, when I try to use it I get "permission denied".Am I on the right way by trying to use base64 file ?Thanks in advance,Gwenael

steven · Accepted Answer

hmm.. on FILE_SRV-DEV you should just execute base64 and the file you want to see.
with SUID rights you'll see the content (as base64) so just revert it :)

merle@file-srv-dev:/tmp$ base64 /root/escalated.txt | base64 -d

Privilege Escalation Completed -- FILE-SRV-DEV ✅

once you did this try to figure out how the server gets backuped and how you can interfere.

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