[00:02.950 --> 00:07.930]  Welcome to DIY Bypass Tools. My name is Robert Graydon and I'm one of the organizers here
[00:07.930 --> 00:12.890]  at the LBV, and today we're going to be showing you how to make bypass tools at home.
[00:16.620 --> 00:21.840]  So a lot of you may be wondering, aside from being mid-pandemic and having to do all of this
[00:21.840 --> 00:27.900]  from home, what other reasons would there be for us to be making our tools DIY? The most obvious,
[00:27.900 --> 00:32.380]  of course, is that these are specialized tools, and most of them aren't even in production. So
[00:32.380 --> 00:38.020]  if you want to get it at all, you need to be the one making it. Aside from that, when pen testing,
[00:38.500 --> 00:43.780]  it wouldn't be a fantastic look at a lot of sites to be the guy walking in with a duffel bag
[00:43.780 --> 00:49.940]  stuffed full of various tools and wire and rope and all of that. So it's handy to be able to know
[00:49.940 --> 00:55.620]  how to look around in your situation and find materials to make the tool that you need when on
[00:55.620 --> 01:02.760]  site. Today we'll be showing you how to make five different types of tools. The latch poker,
[01:02.760 --> 01:12.380]  or puller, the under the door tool, the beside the door tool, padlock shims, and the latch knife.
[01:13.580 --> 01:19.520]  First off, we'll be teaching you how to make the latch poker, or puller. The materials required
[01:19.520 --> 01:25.600]  for this is a single coat hanger, or a piece of wire. You will also need a pair of pliers.
[01:28.710 --> 01:35.170]  Welcome to the Lock Bypass Village's tools making presentation. So in this presentation,
[01:35.170 --> 01:41.070]  we're going to be going through a few different tools that you may have seen already in Bypass
[01:41.650 --> 01:47.430]  101, which is another another talk that we'll be running multiple times throughout the duration
[01:47.430 --> 01:51.570]  of DEF CON. And if you haven't already been to that, I highly recommend checking it out.
[01:51.690 --> 01:55.810]  It's somewhat of a prerequisite to this presentation, just because we won't be
[01:55.810 --> 02:00.930]  we won't be teaching you how to use these tools so much in this video, but just how to make them.
[02:01.990 --> 02:09.430]  So to begin, we're going with a pretty simple one. Some call it a latch poker, but its essential
[02:09.430 --> 02:17.030]  purpose is when the latch of a door is visible to you from from the locked side, it's basically a
[02:17.030 --> 02:24.690]  tool to just go in and push that out of the way. So this one's incredibly simple. All we need is
[02:24.690 --> 02:30.830]  just a piece of wire, really. It should be somewhat thick because it does need to be fairly
[02:30.830 --> 02:37.130]  rigid. But coat hanger wire works perfectly for this purpose. And we'll need a pair of pliers.
[02:38.490 --> 02:46.250]  So to begin with, we're going to take our pliers and we're going to bend the tip and we're going
[02:46.250 --> 02:53.910]  to take about a centimeter and a half at the front of this and bend that over at 90 degrees.
[02:53.910 --> 03:01.730]  And so then we have our sort of hook there. And then we're going to go about four inches
[03:01.730 --> 03:08.750]  back from that and cut off the rest of our wire. And at that point,
[03:09.730 --> 03:16.670]  what I like to do is put a little bit of an eyelet
[03:20.850 --> 03:33.630]  onto your poker here. And so once we have that there and we have a bit of a a hole at the end
[03:33.630 --> 03:38.370]  of it, you can just thread this onto a key ring and that works as the handle. And how this functions
[03:38.370 --> 03:45.590]  is it just reaches in and you can use it to push a latch out of the way. And so that is how to make
[03:45.830 --> 03:52.790]  a latch poker. Next, we'll be making the under the door tool. The materials required are a
[03:52.790 --> 04:02.110]  coat hanger and a piece of string. You will also need a pair of pliers. So in this video, we're
[04:02.110 --> 04:08.870]  going to be making the under the door tool. It's very similar in purpose to the beside the door
[04:08.870 --> 04:13.590]  tool, which we'll be making later in this presentation, with the key difference being
[04:13.590 --> 04:19.130]  that although both of them are trying to pull down on the handle on the other side of a door,
[04:19.130 --> 04:23.770]  the beside the door tool requires a certain amount of clearance. So if we have the door frame and we
[04:23.770 --> 04:30.750]  have the door, the gap between those two has to be great enough that the tool is actually able to
[04:31.310 --> 04:37.110]  pass through and sort of slide up that gap, otherwise it won't work. And if that isn't
[04:37.110 --> 04:42.350]  possible, if we only have enough of a gap just underneath the door, not beside it for our tool
[04:42.350 --> 04:47.690]  to go in, then we'll be having to use the under the door tool. So that's why we have these two
[04:47.690 --> 04:54.190]  different versions that accomplish the same thing. So to begin with, the materials that we have is
[04:54.190 --> 05:00.350]  we'll be needing a coat hanger, we'll need string, and if it's possible, try to get some sort of
[05:00.350 --> 05:04.610]  string that is somewhat abrasion resistant, just because we're going to be pulling it underneath
[05:04.610 --> 05:08.970]  that bottom edge of the door when we're using this tool. And so if it's something that's too
[05:08.970 --> 05:14.550]  thin or easy to cut, then it might just get actually snapped when we're using it to pull.
[05:15.070 --> 05:19.570]  And then for tools, all we need is just a pair of pliers. So to begin with, we're going to be
[05:19.570 --> 05:25.630]  taking our coat hanger and turning it into a long piece of wire, essentially, to build our tool out
[05:25.630 --> 05:31.250]  of. So how we open it up is with this twisted area on the neck here, we just take our pliers
[05:31.790 --> 05:37.850]  and we're just going to firmly grasp the top there and then we can just twist this by hand
[05:38.370 --> 05:47.010]  and that will unwrap that top portion. So now we're going to be straightening this out by hand
[05:47.010 --> 05:53.850]  just to get a straight piece to begin with.
[05:55.570 --> 06:02.210]  And so this only takes just a few seconds here.
[06:03.530 --> 06:08.930]  And some might find it helpful to use pliers for this step just because it's kind of hard to
[06:08.930 --> 06:15.190]  to grip the thin wire and bend it sometimes. So once we have our straight piece of wire here,
[06:15.190 --> 06:23.050]  so this has all been straightened out, what we want to do first is we're going to create
[06:23.490 --> 06:30.050]  a kind of loop at the end for our rope to attach to or our string. So we're going to take our
[06:30.050 --> 06:39.010]  pliers and we're just twisting that over. And so now we have this little eyelet here.
[06:39.730 --> 06:47.230]  And next what we are going to be doing is we're going to create a bend in it and we
[06:47.230 --> 06:56.130]  want to create a kind of hook here that'll go over the door handle. So
[06:58.170 --> 07:01.450]  this is the shape that we're looking for on this side of it.
[07:02.010 --> 07:04.990]  And at this point we can take our string here.
[07:06.950 --> 07:18.320]  And we will just tie that on. And so now what we want to do is, now this varies depending on the
[07:18.320 --> 07:25.700]  height that the handle is on the door that you're actually facing. So in some cases you may need to
[07:25.700 --> 07:31.840]  find a longer piece of wire or you can also, if you get two coat hangers, twist them together to
[07:31.840 --> 07:37.080]  get enough length. In this case we're just going to be making a small scale one that would work on
[07:37.080 --> 07:42.180]  the demonstration doors that we've been using throughout. So we're just going to go down and
[07:42.180 --> 07:49.180]  imagine if our handle is here and say this is where the bottom of our door is. Then we're going
[07:49.180 --> 08:00.180]  to make a bend there at 90 degrees. And we can just kind of make a little bit of a bend and then
[08:00.180 --> 08:12.520]  we have our hook here as a bit of a handle. And so at that point our under the door tool is complete.
[08:13.740 --> 08:21.220]  We'll now be making the beside the door tool. The materials required is a coat hanger and we will need a pair of pliers.
[08:24.200 --> 08:29.840]  So we're going to be making the beside the door tool in this video. So all that we need in terms
[08:29.840 --> 08:35.940]  of materials is just a regular wire coat hanger. Some coat hangers that are made out of wire,
[08:35.940 --> 08:42.660]  you'll find that they have a sort of plastic or rubbery outer sheathing on them. And while those
[08:42.660 --> 08:47.880]  will work sometimes, they're not ideal because they're thicker so they get stuck and the plastic
[08:47.880 --> 08:55.020]  actually inhibits almost how strong they can be just because it means that the wire inside is
[08:55.020 --> 09:01.040]  going to be a lot thinner. So you want to try to find one that's just wire itself, not with any
[09:01.040 --> 09:08.540]  coating. And so to begin with we're going to just unravel the twisted top here and that's going to
[09:08.540 --> 09:13.900]  let us open up the coat hanger. And the easiest way to do this is just with your pliers. You just
[09:13.900 --> 09:19.620]  grab at the top and then rotate the whole coat hanger. And so now we have our opened up coat
[09:19.620 --> 09:31.830]  hanger here. So just by hand we are going to straighten out the wire here. And this just gives
[09:31.830 --> 09:41.530]  us a nice starting place in terms of actually creating our tool. And so we have a fairly
[09:41.530 --> 09:48.510]  straight wire here now. So the part that's actually going to be reaching out to the handle on the
[09:48.510 --> 09:53.970]  other side of the door is what we're going to be creating first. So we're going to take our wire
[09:53.970 --> 10:00.930]  and we're going to bend it with about an inch and a half or two inches like so. We're going to be
[10:00.930 --> 10:10.070]  adding another bend like that and so that creates our hook that will actually be going onto the
[10:10.070 --> 10:15.550]  handle on the other side of the door. So now while keeping this flat we're going to be coming down
[10:16.210 --> 10:23.130]  about a foot and a half and we're going to be bending a 90 degree angle in there. So
[10:23.770 --> 10:31.630]  it's looking like this. And then what we're going to be doing next is about the thickness of the
[10:31.630 --> 10:37.890]  door is how much you want your piece of wire here to be. And so after that thickness you want to put
[10:37.890 --> 10:49.380]  another 90 that brings the wire coming up like this. And so now we have this basic shape and so
[10:49.380 --> 10:54.460]  this can go around the side of the door. And then we're going to come up to here and we're going to
[10:54.460 --> 10:58.500]  look where is our hook. So we have the hook that's on the handle here so what we're going to do is
[10:58.500 --> 11:04.280]  mirror that on the other side just by bending this over. And the purpose of that is that just gives
[11:04.280 --> 11:10.740]  you an indicator so when you are using this tool you can look at where this is on your side of the
[11:10.740 --> 11:16.320]  door and you can because they're bent symmetrically you can see that the the hook is in that same
[11:16.320 --> 11:22.300]  place on the other side of the door so you know where it is relative to the handle. Okay so just
[11:22.300 --> 11:27.700]  to quickly demonstrate the sort of symmetrical idea of this tool so here we have a small example
[11:27.700 --> 11:33.780]  door and you can see that it's a lot shorter than a real one so the tool that we've made here it's
[11:33.780 --> 11:39.940]  kind of built for a full-size one so it isn't going to quite actually be usable on this tiny example
[11:39.940 --> 11:46.040]  here. But the basic idea with this is that you would put it underneath the door and then sort
[11:46.040 --> 11:52.020]  of jimmy it up until you have this piece here between the actual door and the frame. And so at
[11:52.020 --> 11:57.800]  this point just from looking on this side we can see where our little bend is here and we can see
[11:57.800 --> 12:02.900]  okay well that's right next to the the handle here and what that means is that because it
[12:02.900 --> 12:07.420]  was bent symmetrically we know that that's actually where it is on the other side as well.
[12:09.000 --> 12:15.040]  And so that's that's how we make this tool and also how we use that symmetrical trick on it.
[12:18.260 --> 12:25.320]  Next we will be making padlock shims. The materials required is a soda can and you will also need a
[12:25.320 --> 12:32.180]  pair of scissors. So now I'll be showing you how to make padlock shims. These are a very simple
[12:32.180 --> 12:36.560]  thing to do at home you just need a soda can that's empty and you probably want to wash it
[12:36.560 --> 12:40.320]  out beforehand just so you don't make a mess as well as a pair of scissors and that's it.
[12:40.320 --> 12:46.440]  So to begin with what we want to do is basically get this flat wall of it out into a rectangular
[12:46.440 --> 12:52.820]  sheet so that we can more easily work with it. So to do that we're just going to cut the bottom
[12:52.820 --> 13:09.300]  off of it cut the top off of it and these edges are very sharp so be careful that you don't cut
[13:09.300 --> 13:19.280]  yourself and then we'll cut right down the middle and we can open it up and we get this flat sheet
[13:19.280 --> 13:29.760]  of very thin aluminum so you can kind of flatten it a little bit that just makes it easier to work
[13:30.220 --> 13:35.900]  with. And so next what we want to do is actually cut out our shim so the basic shape that it's
[13:35.900 --> 13:42.820]  going to be is it kind of has a curve downwards and that's the actual shim part and we're going
[13:42.820 --> 13:49.060]  to leave about a centimeter strip on top of it so that we can fold that over to create a
[13:49.060 --> 13:55.960]  handle that we won't cut ourselves on. So we'll be starting this off by just cutting that curved
[13:55.960 --> 14:03.460]  piece down there and that's the part that's actually going to go down into the padlock and
[14:03.460 --> 14:11.940]  push the latch out of the way there. And then again here we're cutting about a centimeter wide strip
[14:17.500 --> 14:25.020]  and so that leaves us with this basic shape for our shim and all that's left to do now is we take
[14:25.020 --> 14:31.460]  this strip that we made here and we want to fold that in half and what that does is first of all
[14:31.460 --> 14:36.200]  it gives us a rounded edge so we aren't going to actually cut ourselves on that because the
[14:36.200 --> 14:42.360]  the edges of these pieces are extremely sharp and also it just adds a bit of structural rigidity to
[15:07.570 --> 15:11.330]  Finally, we'll be making the latch knife.
[15:11.730 --> 15:17.990]  The materials required for this is pallet strapping. This is commonly seen in warehouses
[15:17.990 --> 15:22.650]  where it's used to secure large loads onto pallets, and is something that's recycled
[15:22.650 --> 15:30.810]  after use so very easy to find. You will also need a pair of tin snips, and a pair of pliers.
[15:34.340 --> 15:39.080]  Okay, so we're going to be making a latch knife in this video. So, what we need for
[15:39.080 --> 15:43.260]  this in terms of materials is a piece of pallet strapping, so this is a very common thing
[15:43.260 --> 15:49.020]  to see in warehouses. It's essentially a very thin piece of steel, and it's used to
[15:49.020 --> 15:54.100]  hold down materials on pallets. But because of how common it is, it's also very helpful
[15:54.100 --> 15:59.080]  for us if we're trying to DIY this. In terms of tools, scissors aren't quite going to cut
[15:59.080 --> 16:03.720]  it for this material, so we will be needing a pair of tin snips, and we'll be needing
[16:04.240 --> 16:10.700]  some pliers. So, the actual creation of this tool is fairly simple. First of all, we're
[16:10.700 --> 16:16.580]  going to want to cut a kind of knife point onto this, and what that lets us do is push
[16:16.580 --> 16:23.680]  this in and actually get it behind that latch to begin pushing it out of the way. So, now
[16:24.120 --> 16:36.620]  we're just going to cut that knife point onto our piece of material here. And so now we
[16:36.620 --> 16:42.440]  have that there. And if you wanted to, you would maybe straighten it out a little bit
[16:42.440 --> 16:47.860]  if it got bent while cutting. And then, so what's left to do is we're actually going
[16:47.860 --> 16:52.820]  to have to put a handle on this. So you want to look at your point here, and if we know
[16:52.820 --> 16:58.500]  that the latch is going to be on this side, we want to go in behind it. We want our handle
[16:58.500 --> 17:02.500]  to be facing outwards from the door, because how this tool works is it goes in between
[17:02.500 --> 17:06.480]  the door and the frame. So we're going to take our tool here, and we're going to just
[17:06.480 --> 17:14.980]  start the bend by hand. And so you can see that we have the start of a handle formed
[17:14.980 --> 17:21.100]  here. And now is when we need those pliers, because this is a fairly strong material.
[17:21.100 --> 17:30.380]  So the pliers are just going to let us take this and squish it down so that it's thin
[17:30.380 --> 17:38.300]  enough to actually go in there. And the hammer also would help out with this, if you do have
[17:38.300 --> 17:43.960]  that, but we can get it done with the pliers. And so that's how we make the, uh, the knife
[17:43.960 --> 17:49.580]  latch, or the latch knife. Thanks for coming out. You can ask us questions on Discord,
[17:49.580 --> 17:53.400]  or if you want, you can message them to us. If you haven't already, I'd highly recommend
[17:53.400 --> 17:58.320]  checking out Bypass 101, as well as some of the other talks that we'll be running. Enjoy
[17:58.320 --> 17:59.360]  the rest of DEF CON!