newbie_guide
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newbie_guide [2010/06/17 15:45] – Fixed typo darkaudax | newbie_guide [2018/11/21 23:14] – Updated information and removed outdated information mister_x | ||
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Idea and initial work: ASPj\\ | Idea and initial work: ASPj\\ | ||
Additions by: a number of good souls\\ | Additions by: a number of good souls\\ | ||
- | Last updated: | + | Last updated: |
\\ | \\ | ||
- | This tutorial will give you the basics to get started using the aircrack-ng suite. | + | This tutorial will give you the basics to get started using the aircrack-ng suite. |
Although it does not cover all the steps from start to finish like this tutorial, the [[simple_wep_crack|Simple WEP Crack]] tutorial covers the actual aircrack-ng steps in much more detail. | Although it does not cover all the steps from start to finish like this tutorial, the [[simple_wep_crack|Simple WEP Crack]] tutorial covers the actual aircrack-ng steps in much more detail. | ||
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To determine to which category your card belongs to, see [[compatibility_drivers|hardware compatibility page]]. Read [[compatible_cards|Tutorial: | To determine to which category your card belongs to, see [[compatibility_drivers|hardware compatibility page]]. Read [[compatible_cards|Tutorial: | ||
- | First, you need to know which chipset is used in your wireless card and which driver you need for it. You will have determined this using the information in the previous paragraph. | + | First, you need to know which chipset is used in your wireless card and which driver you need for it. You will have determined this using the information in the previous paragraph. |
- | As I own a Ralink USB device, I am providing the steps to get it working with Aircrack-ng. | ||
- | |||
- | If you own another type of card, check the [[install_drivers|installing drivers page]] for instructions about other drivers. | ||
- | |||
- | |||
- | ===== RaLink USB rt2570 Setup guide ===== | ||
- | |||
- | If you own a rt2570 USB device (like D-Link DWL-G122 rev. B1 or Linksys WUSB54G v4) you should use the drivers from http:// | ||
- | |||
- | Lets unpack, compile and install the drivers: | ||
- | |||
- | tar xfj rt2570-k2wrlz-1.3.0.tar.bz2 | ||
- | cd rt2570-k2wrlz-1.3.0/ | ||
- | make | ||
- | make install | ||
- | |||
- | The last step has to be performed as root. Use su to change to root. | ||
- | Now we can load the module into the kernel: | ||
- | modprobe rt2570 | ||
- | |||
- | Plug in your card, it should be recognized as rausb0 now. Run iwconfig to list your wireless devices and check if everything is working. | ||
===== Aircrack-ng installation ===== | ===== Aircrack-ng installation ===== | ||
- | ==== Source ==== | + | Get the latest copy of aircrack-ng from the [[main|homepage]], use our packages |
- | + | ||
- | Get the latest copy of aircrack-ng from the homepage: http:// | + | |
- | The following commands would have to be changed if you use a newer version of the software. | + | |
- | + | ||
- | Unpacking, compiling, installing: | + | |
- | + | ||
- | tar xfz aircrack-ng-1.0-rc1.tar.gz | + | |
- | cd aircrack-ng-1.0-rc1 | + | |
- | make | + | |
- | make install | + | |
- | + | ||
- | As usual, the last step needs to be performed as root, use **su** | + | |
- | + | ||
- | ==== YUM ==== | + | |
- | + | ||
- | **WARNING!!!** Currently, neither of the repositories hosts the latest version of Aircrack-ng. It's recommended that you use the first method instead. | + | |
- | + | ||
- | If you are using a system like Redhat | + | |
- | + | ||
- | su | + | |
- | yum -y install aircrack-ng | + | |
- | + | ||
- | ==== RPM ==== | + | |
- | + | ||
- | **WARNING!!!** Currently, neither of the repositories hosts the latest version of Aircrack-ng. It's recommended that you use the first method instead. | + | |
- | + | ||
- | If you are using a system which is rpm-based then you can take the easy way to install aircrack-ng. (Example for Redhat Linux 4) | + | |
- | + | ||
- | su | + | |
- | rpm -ihv http:// | + | |
- | IMPORTANT: Check http:// | + | To install |
====== IEEE 802.11 basics ====== | ====== IEEE 802.11 basics ====== | ||
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If airodump-ng could connect to the WLAN device, you'll see a screen like this: | If airodump-ng could connect to the WLAN device, you'll see a screen like this: | ||
- | {{http:// | + | {{https:// |
[[airodump-ng]] hops from channel to channel and shows all access points it can receive beacons from. Channels 1 to 14 are used for 802.11b and g (in US, they only are allowed to use 1 to 11; 1 to 13 in Europe with some special cases; 1-14 in Japan). Channels between 36 and 149 are used for 802.11a. The current channel is shown in the top left corner. | [[airodump-ng]] hops from channel to channel and shows all access points it can receive beacons from. Channels 1 to 14 are used for 802.11b and g (in US, they only are allowed to use 1 to 11; 1 to 13 in Europe with some special cases; 1-14 in Japan). Channels between 36 and 149 are used for 802.11a. The current channel is shown in the top left corner. | ||
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^ STATION | ^ STATION | ||
^ PWR | Signal strength. Some drivers don't report it | | ^ PWR | Signal strength. Some drivers don't report it | | ||
- | ^ Packets | + | ^ Packets |
^ Probes | ^ Probes | ||
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For more information about [[aircrack-ng]] parameters, description of the output and usage see the [[aircrack-ng|manual]]. | For more information about [[aircrack-ng]] parameters, description of the output and usage see the [[aircrack-ng|manual]]. | ||
- | The number of IVs you need to crack a key is not fixed. This is because some IVs are weaker and leak more information about the key than others. Usually these weak IVs are randomly mixed in between the stonger | + | The number of IVs you need to crack a key is not fixed. This is because some IVs are weaker and leak more information about the key than others. Usually these weak IVs are randomly mixed in between the stronger |
- | There are some more advanced APs out there that use an algorithm to filter out weak IVs. The result is either that you can't get more than " | + | There are some more advanced APs out there that use an algorithm to filter out weak IVs. The result is either that you can't get more than " |
====== Active attacks ====== | ====== Active attacks ====== | ||
===== Injection support ===== | ===== Injection support ===== | ||
- | Most devices don't support injection - at least not without patched drivers. Some only support certain attacks. Take a look at the [[compatibility_drivers|compatibility page]], column aireplay. | + | Most devices don't support injection - at least not without patched drivers. Some only support certain attacks. Take a look at the [[compatibility_drivers|compatibility page]], column aireplay. |
The first step is to make sure packet injection really works with your card and driver. The easiest way to test it is the [[injection_test|injection test]] attack. | The first step is to make sure packet injection really works with your card and driver. The easiest way to test it is the [[injection_test|injection test]] attack. | ||
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==== The idea ==== | ==== The idea ==== | ||
- | [[http:// | + | [[https:// |
sends back an answer. Because WEP does not protect against replay, you can sniff a packet, send it out again and again and it is still valid. | sends back an answer. Because WEP does not protect against replay, you can sniff a packet, send it out again and again and it is still valid. | ||
So you just have to capture and replay an ARP-request targeted at the AP to create lots of traffic (and sniff IVs). | So you just have to capture and replay an ARP-request targeted at the AP to create lots of traffic (and sniff IVs). | ||
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====== Further tools and information ====== | ====== Further tools and information ====== | ||
- | [[http:// | + | [[https:// |
newbie_guide.txt · Last modified: 2018/11/21 23:31 by mister_x