I'm a dump
10 points Easy

The keyword is hexadecimal, and removing an useless H.E.H.U.H.E. from the flag. The flag is in the format CTFlearn{*}

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Rating 4.11
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Discussion

single command can be used to solve!!! belive me i learnt today only that every file has strings

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use strings tool it is easy

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I used hexeditor to display the elf file and then search of specific strings

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guys im using win11 and opening the file in notepad and searching for ctf gives CTFlearnHº{fl4ggyfH‰EÐH‰UØHÇEàl4g} even if we remove the H,U,Es we get CTFlearn{fl4ggyf‰Ð‰ØÇEàl4g} but its not working

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cyberchef

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you are pretty close. maybe try extrapolating from what you already know

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