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7 Minute Security

7MS #610: DIY Pentest Dropbox Tips – Part 9

Feb 9, 2024 · 20 min · 19.7 MB
0:00-20:25

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Hey friends, today we cover a funstrating (that's fun + frustrating) issue we had with our DIY pentest dropboxes. TLDL:

  • The preseed file got jacked because I had a bad Kali metapackage in it.
  • While I was tinkering around with preseed files, I decided it would be more efficient to have the Kali ISO call that preseed file directly over HTTP (rather than make a new ISO every time I made a preseed change). To accomplish that:
    • Mount the Kali ISO
    • Explore to isolinux > txt.cfg
    • Modify the txt.cfg to include a custom boot option that calls your preseed over HTTP. For example:
label install menu label ^Install Yermaum kernel /install.amd/vmlinuz append net.ifnames=0 preseed/url=https://somewebsite/kali.preseed locale=en_US keymap=us hostname=kali777 domain=7min.sec simple-cdd/profiles=kali desktop=xfce vga=788 initrd=/install.amd/initrd.gz --- quiet