Archiver

reverse FCSC 2024 solved on

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Description

Our SIGINT team has intercepted an e-mail containing a result.fcsc attachment. Given the extension, it must be an archive in the proprietary FCSC format. We were able to retrieve the utility in its Windows version, archiver.exe.

Given the body of the e-mail, it looks pretty important. Any chance of finding out what’s inside?

Your predecessor, after successfully completing a similar analysis, sank into madness and now resides in a psychiatric asylum. He muttered strange words like “TTD” and talked incessantly about hardware breakpoint.

Note: The string you’ll find must be enclosed in FCSC{} to get the flag.

Files

  • result.fcsc
    104 B – ee7da9940bc24c0fde63003467a765066a4cb1ce9f1b23e58a4627885a617ff5
  • archiver.exe
    1.24 MiB – 2801053cbfe1852b2e5f1fcfe48efdbc6843d7673913b899c98cb1fac1a5751c

Authors

commial
YoMama

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Writeups

I've been looking for a long time and I still can't find the flag!

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DateAuthor Language Tags Vote
2024-05-23
celi0n
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