“Hmmm”

Problem Description :

🤔
Note: anime girl isn’t the flag

In this problem, we are given a file called “hmmm”. First, lets try to execute it.

Lets take a closer look into the actual file. You can open it up in text editor/notepad/etc… Once opened up, we get this program :

ELF

>
Ä @∏[email protected]@&%@@@PPP

®®
   ’’
000
∞=∞M∞M`h¿=¿M¿M

ÄÄÄ!
!
 ®®®  »»»DDSÂtd®®®  PÂtdå6å6å6LLQÂtdRÂtd∞=∞M∞MPP
/lib64/ld-linux-x86-64.so.2hexCTF{1m_s0rry_1f_y0u_r3v3r5ed_7h1s}GNU¿GNUV(=Ó’¯[àZâåæa9®
GNU
Å—eŒmD &` o "libc.so.6putsusleep__cxa_finalize__libc_start_mainGLIBC_2.2.5_ITM_deregisterTMCloneTable__gmon_start___ITM_registerTMCloneTable


ui	8∞M`!∏M !PPÿO
‡OËOO¯O»O–OÛ˙HÉÏHãŸ/HÖ¿tˇ–HɃ√ˇ5í/Úˇ%ì/Û˙hÚÈ·ˇˇˇêÛ˙h
ÚÈ—ˇˇˇêÛ˙Úˇ%ù/DÛ˙Úˇ%]/DÛ˙Úˇ%U/DÛ˙1ÌIâ—^Hâ‚HɉPTLç&Hç
ØHç=͡2/ÙêHç=Y/HçR/H9¯tHã/HÖ¿t	ˇ‡Ä√ÄHç=)/Hç5"/H)˛HâH¡Ó?H¡¯H
∆H—˛tHãÂ.HÖ¿tˇ‡fD√ÄÛ˙Ä=Â.u+UHÉ=¬.HâÂtHã=∆.Ë	ˇˇˇËdˇˇˇ∆Ω.
]√√ÄÛ˙ÈwˇˇˇÛ˙UHâÂHÉÏHâ}¯HãE¯Hâ«Ë€˛ˇˇø†Ü
Ë·˛ˇˇê…√Û˙UHâÂHÉÏ «EÏffãEÏHÖ¿xÛH*¿ÎHâ¬H—Íɇ
H	¬ÛH*¬ÛX¿ÛEHç=KËèˇˇˇ«EÙÎsãMÙãEÏ∫˜Òâ–Ö¿u\ÎãuÙãEÏ∫˜ˆâEÏãMÙãEÏ∫˜Òâ–Ö¿t›ÛZMÛ*EÙÛZ–Ú◊
Ú^¬f(–Ú«
Ú\¬ÚY¡ÚZ¿ÛEÉEÙ
ãEÙØ¿9EÏsÇHç=ò˸˛ˇˇÉ}Ï
vVÛZMãEÏHÖ¿xÛH*¿ÎHâ¬H—Íɇ
H	¬ÛH*¬ÛX¿ÛZ–Ú

*Along with other stuff but I'm not going to bother dissecting it 

Browsing through the program, we see the flag in blatant sight.

Flag :

hexCTF{1m_s0rry_1f_y0u_r3v3r5ed_7h1s}