wave-a-flag

Notes

THe warm file is a binary file.

Command:

file warm

Output:

warm: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 3.2.0, BuildID[sha1]=3181a501366281ab5eba1c41e54a1f40800e3966, with debug_info, not stripped

Make the binary executable:

Command:

chmod +x warm

Running it in the terminal:

Command:

./warm

Output:

Hello user! Pass me a -h to learn what I can do!

Running it with the -h flag:

Command:

./warm -h

Output:

Oh, help? I actually don't do much, but I do have this flag here: picoCTF{b1scu1ts_4nd_gr4vy_755f3544}

To get the flag directly make the binary executable and run get-flag.sh or the command below:

Command:

./warm -h | cut -d : -f2 | tr -d  " "

Output:

picoCTF{b1scu1ts_4nd_gr4vy_755f3544}