I'm writing a parser for some xml scenario files. Among other cleartext info there is a node 'Scenario_Compressed' which i like to analyse. I've uploaded the content here: http://www.lunex.net/temp/compstr.txt

can anybody of you help me identifing the type of compression?

thanks in advance Lunex

1 Answer 1


As @w4rex said, it definitely looks like base64. If you try to decode it like a regular base64 string, you end up with :

37 7a bc af 27 1c 00 03 d8 a0 33 34 30 78 00 00       7z..............

You recognize the '7z' magic of a 7zip file, and it's indeed a 30Ko archive containing a single file of 363Ko named 'default'. The file is password-protected though, so you could try to either brute-force it or reverse the application generating this file to find the password.

  • It's best to try to get the password from the binary instead of brute forcing it. Commented Apr 12, 2016 at 8:20
  • thank both you very much! sadly I have absolutly no experience in disassembling and no idea how to extract the password from the binary, so i'm trying bruteforce now (thank you nvidia ;-)
    – Lunex
    Commented Apr 13, 2016 at 6:18

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