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When trying to run this binary on a 64 bit Debian system, I get an error: echo 'f0VMRgIBAQAAAAAAAAAAAAIAPgABAAAA+ABAAAAAAAAAAQAAAAAAAEAAAAAAAAAAAAAAAEAAOAA
by johndough 3y ago
When trying to run this binary on a 64 bit Debian system, I get an error:
echo 'f0VMRgIBAQAAAAAAAAAAAAIAPgABAAAA+ABAAAAAAAAAAQAAAAAAAEAAAAAAAAAAAAAAAEAAOAABAEAAAgABAAEAAAABAAAABgAAAAAAAAD4AEAAAAAAAPgAAAAAAAAADgAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAHAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAGAQAAAAAAABEAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAAAAAAAAAAAAQAAAAUAAAD4AAAAAAAAAPgAQAAAAAAA+ABAAAAAAAAOAAAAAAAAAA4AAAAAAAAAABAAAAAAAABIx8A8AAAAvyoAAAAPBQAudGV4dAAuc2hzdHJ0YWIA' | base64 -d > main
chmod +x main
./main
# bash: ./main: cannot execute binary file: Exec format error
Am I doing it incorrectly? I hope I copied the bytes correctly since copy & pasting from the website is a bit challenging.
- johndough 3y agoFound the mistake. The offset for the program header table should be c0 00 instead of 00 01 (third row on the website, starting at byte 0020). Here is the correct code. echo 'f0VMRgIBAQAAAAAAAAAAAAIAPgABAAAA+ABAAAAAAADAAAAAAAAAAEAAAAAAAAAAAAAAAEAAOAABAEAAAgABAAEAAAABAAAABgAAAAAAAAD4AEAAAAAAAPgAAAAAAAAADgAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAHAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAGAQAAAAAAABEAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAAAAAAAAAAAAQAAAAUAAAD4AAAAAAAAAPgAQAAAAAAA+ABAAAAAAAAOAAAAAAAAAA4AAAAAAAAAABAAAAAAAABIx8A8AAAAvyoAAAAPBQAudGV4dAAuc2hzdHJ0YWIA' | base64 -d > main ./main echo $? # should print 42