This task required unpack, and crack password to zip, gzip, tar files.Here is a script in bash to detect file with bash (tar can return application/gzip type, so is defined checking gzip returned status).
Required avalible commands (for this script):* zip2john* john* wget* python* file
Decode.sh```#!/bin/bash
mkdir -p new/mkdir -p old/
if [ ! -f wordlist.txt ]; then	wget https://raw.githubusercontent.com/danielmiessler/SecLists/master/Passwords/xato-net-10-million-passwords-100.txt	mv xato-net-10-million-passwords-100.txt wordlist.txtfi
File="$1"
function DisPies { # Delete it source Paste incoming extended sources	mv $File old/	File="$( ls new/ )"	mv new/* .}
while [[ 1 -eq 1 ]]; do	MimeType="$( file --mime-type -b ./$File )"	echo $MimeType	if [ "$MimeType" == "application/zip" ]; then		zip2john $File > o		mv $File $File.gz		File="$File.gz"		john --wordlist=wordlist.txt o > /dev/null		cd new/		$( ../Password.py "../$File" )		cd ..		DisPies	fi	if [ "$MimeType" == "application/gzip" ]; then		gzip -dkc $File > new/$File	       	if [ $? == 0 ]; then			DisPies		else			MimeType="application/x-tar"		fi	fi	if [ "$MimeType" == "application/x-tar" ]; then		cd new/		tar -xf ../$File		cd ..		DisPies	fidone```
Password.py```#!/usr/bin/python3
import zipfileimport osimport sys
with zipfile.ZipFile(sys.argv[1]) as f:    f.setpassword(os.popen('john --show ../o').read().split(':')[1].encode())    f.extractall('./')    f.close()```This file is required becouse we can't insert password to unzip with pipe.
FLAG: rtcp{z1pPeD_4_c0uPl3_t00_M4Ny_t1m3s_a1b8c687}