├── .gitignore ├── LICENSE ├── README.md ├── dot.go ├── dot_windows.go ├── go.mod ├── go.sum ├── intercept.go ├── intercept_default.go ├── intercept_windows.go ├── main.go ├── run_pcap.go ├── s.txt ├── saved_commands.json └── validate.go /.gitignore: -------------------------------------------------------------------------------- 1 | /geneva-cli 2 | *.exe 3 | *.log 4 | *.sys 5 | *.dll -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Windows based Geneva-cli 2 | 3 | This is a Geneva-based WinDivert tunnel, it takes a Geneva strategy and utilizes WinDivert to capture packets, modify them, and re-inject the packet to avoid censorship. One would use this tool when trying to evade censorship and can be run along side Lantern VPN to further obscure traffic. 4 | 5 | [Geneva](https://geneva.cs.umd.edu/) is a genetic algorithm based solution to censorship evasion. 6 | 7 | [WinDivert](https://www.reqrypt.org/windivert.html) is a user-mode packet capture-and-divert package for Windows 10, Windows 11, and Windows Server. 8 | 9 | ## Prerequisites 10 | 11 | - Be on a Windows machine 12 | - Have Powershell installed 13 | - Run Powershell as admin mode 14 | - All commands are ran in the project directory 15 | - Go 1.20 is installed 16 | 17 | ## How to Build 18 | 19 | First download WinDivert 2.2 [here](https://www.reqrypt.org/windivert.html) and then extract the following files and place them directly in your geneva-cli folder, the dlls will need to be renamed. 20 | - x86/WinDivert32.sys 21 | - x86/WinDivert.dll 22 | - x64/WinDivert64.sys 23 | - x64/WinDivert.dll 24 | 25 | Rename the x86 dll to WinDivert32.dll 26 | Rename the x64 dll to WinDivert64.dll 27 | 28 | `go build` 29 | 30 | ## How to run 31 | 32 | First you will need a valid Geneva strategy, one is included in s.txt. 33 | 34 | Then you can run the program using 35 | 36 | `.\geneva-cli.exe intercept --interface -strategyFile .\s.txt` 37 | 38 | You can find a list of available interfaces using 39 | 40 | `.\geneva-cli.exe list-adapters` 41 | 42 | ## Notes 43 | 44 | This was tested on a 64-bit Windows 10 machine 45 | Not tested on WSL 46 | 47 | ## Help Output 48 | ``` 49 | NAME: 50 | geneva - Genetic Evasion for windows 51 | 52 | USAGE: 53 | geneva-cli.exe [global options] command [command options] [arguments...] 54 | 55 | COMMANDS: 56 | 57 | dot (unavailable on windows) output the strategy graph 58 | as an SVG 59 | intercept Run a strategy on live network traffic 60 | list-adapters Lists the available adapters 61 | run-pcap Run a PCAP file through a strategy and output the resulting packets in a new PCAP 62 | saved-command Runs commands from config file 63 | validate validate that a strategy is well-formed 64 | help, h Shows a list of commands or help for one command 65 | 66 | GLOBAL OPTIONS: 67 | --help, -h show help (default: false)``` -------------------------------------------------------------------------------- /dot.go: -------------------------------------------------------------------------------- 1 | //go:build !windows 2 | 3 | package main 4 | 5 | import ( 6 | "bytes" 7 | gerrors "errors" 8 | "fmt" 9 | 10 | "github.com/getlantern/geneva" 11 | "github.com/getlantern/geneva/actions" 12 | "github.com/getlantern/geneva/strategy" 13 | "github.com/goccy/go-graphviz" 14 | "github.com/goccy/go-graphviz/cgraph" 15 | "github.com/urfave/cli/v2" 16 | ) 17 | 18 | var ErrUnhandledAction = gerrors.New("unhandled action") 19 | 20 | func init() { 21 | app.Commands = append(app.Commands, 22 | &cli.Command{ 23 | Name: "dot", 24 | Usage: "output the strategy graph as an SVG", 25 | Flags: []cli.Flag{ 26 | &cli.BoolFlag{ 27 | Name: "verbose", 28 | Aliases: []string{"v"}, 29 | }, 30 | &cli.StringFlag{ 31 | Name: "output", 32 | Aliases: []string{"o"}, 33 | Value: "output.svg", 34 | }, 35 | }, 36 | ArgsUsage: "STRATEGY", 37 | Action: dot, 38 | } 39 | ) 40 | } 41 | 42 | func dot(c *cli.Context) error { //nolint:cyclop 43 | input := c.Args().First() 44 | 45 | if input == "" { 46 | return cli.Exit("no strategy given", 1) 47 | } 48 | 49 | output := c.String("output") 50 | if output == "" { 51 | return cli.Exit(fmt.Sprintf("invalid output filename: %q", output), 1) 52 | } 53 | 54 | strategy, err := geneva.NewStrategy(input) 55 | if err != nil { 56 | return cli.Exit(fmt.Sprintf("invalid strategy: %v", err), 1) 57 | } 58 | 59 | g := graphviz.New() 60 | 61 | graph, err := g.Graph() 62 | if err != nil { 63 | return cli.Exit(err, 1) 64 | } 65 | 66 | defer func() { 67 | if err := graph.Close(); err != nil { 68 | fmt.Fprintf(cli.ErrWriter, "error closing graph: %v\n", err) 69 | } 70 | 71 | g.Close() 72 | }() 73 | 74 | err = parse(graph, strategy) 75 | if err != nil { 76 | return cli.Exit(fmt.Sprintf("failed to graph strategy: %v\n", err), 1) 77 | } 78 | 79 | if c.Bool("verbose") { 80 | var buf2 bytes.Buffer 81 | if err := g.Render(graph, "dot", &buf2); err != nil { 82 | return cli.Exit(err, 1) 83 | } 84 | 85 | fmt.Println(buf2.String()) 86 | } 87 | 88 | var buf bytes.Buffer 89 | if err = g.Render(graph, graphviz.SVG, &buf); err != nil { 90 | return cli.Exit(err, 1) 91 | } 92 | 93 | fmt.Printf("writing SVG to %s", output) 94 | 95 | if err := g.RenderFilename(graph, graphviz.SVG, output); err != nil { 96 | return cli.Exit(err, 1) 97 | } 98 | 99 | return nil 100 | } 101 | 102 | func parse(graph *cgraph.Graph, st *strategy.Strategy) error { 103 | inbound, err := graph.CreateNode("inbound") 104 | if err != nil { 105 | return fmt.Errorf("error creating node: %w", err) 106 | } 107 | 108 | for _, at := range st.Inbound { 109 | node, err := parseActionTree(graph, at) 110 | if err != nil { 111 | return err 112 | } 113 | 114 | _, err = graph.CreateEdge(name("e"), inbound, node) 115 | if err != nil { 116 | return fmt.Errorf("error creating edge to action: %w", err) 117 | } 118 | } 119 | 120 | return nil 121 | } 122 | 123 | func parseActionTree(graph *cgraph.Graph, at *actions.ActionTree) (*cgraph.Node, error) { 124 | trigger, err := graph.CreateNode(name("trigger")) 125 | if err != nil { 126 | return nil, fmt.Errorf("error creating node: %w", err) 127 | } 128 | 129 | trigger.SetShape("Mrecord") 130 | trigger.SetLabel(fmt.Sprintf("trigger|{%s}", at.Trigger.String())) 131 | 132 | node, err := parseAction(graph, at.RootAction) 133 | if err != nil { 134 | return nil, err 135 | } 136 | 137 | if _, err := graph.CreateEdge("e", trigger, node); err != nil { 138 | return nil, fmt.Errorf("error creating edge to first action: %w", err) 139 | } 140 | 141 | return trigger, nil 142 | } 143 | 144 | func parseAction(graph *cgraph.Graph, action actions.Action) (*cgraph.Node, error) { 145 | switch t := action.(type) { 146 | case *actions.SendAction: 147 | node, err := graph.CreateNode(name("send")) 148 | if err != nil { 149 | return nil, fmt.Errorf("error creating node: %w", err) 150 | } 151 | 152 | node.SetLabel("send") 153 | 154 | return node, nil 155 | case *actions.DropAction: 156 | node, err := graph.CreateNode(name("drop")) 157 | if err != nil { 158 | return nil, fmt.Errorf("error creating node: %w", err) 159 | } 160 | 161 | node.SetLabel("drop") 162 | 163 | return node, nil 164 | case *actions.DuplicateAction: 165 | return parseDuplicateAction(graph, t) 166 | case *actions.FragmentAction: 167 | return parseFragmentAction(graph, t) 168 | default: 169 | return nil, ErrUnhandledAction 170 | } 171 | } 172 | 173 | func parseDuplicateAction( 174 | graph *cgraph.Graph, 175 | action *actions.DuplicateAction, 176 | ) (*cgraph.Node, error) { 177 | node, err := graph.CreateNode(name("duplicate")) 178 | if err != nil { 179 | return nil, fmt.Errorf("error creating node: %w", err) 180 | } 181 | 182 | node.SetLabel("duplicate") 183 | 184 | lnode, err := parseAction(graph, action.Left) 185 | if err != nil { 186 | return nil, err 187 | } 188 | 189 | rnode, err := parseAction(graph, action.Right) 190 | if err != nil { 191 | return nil, err 192 | } 193 | 194 | _, err = graph.CreateEdge(name("e"), node, lnode) 195 | if err != nil { 196 | return nil, fmt.Errorf("error creating edge to first action: %w", err) 197 | } 198 | 199 | _, err = graph.CreateEdge(name("e"), node, rnode) 200 | if err != nil { 201 | return nil, fmt.Errorf("error creating edge to first action: %w", err) 202 | } 203 | 204 | return node, nil 205 | } 206 | 207 | func parseFragmentAction( 208 | graph *cgraph.Graph, 209 | action *actions.FragmentAction, 210 | ) (*cgraph.Node, error) { 211 | node, err := graph.CreateNode(name("fragment")) 212 | if err != nil { 213 | return nil, fmt.Errorf("error creating node: %w", err) 214 | } 215 | 216 | node.SetShape("record") 217 | node.SetLabel( 218 | fmt.Sprintf("fragment|{proto:%s|offset:%d|inOrder:%v}", 219 | action.Proto(), action.FragSize, action.InOrder)) 220 | 221 | lnode, err := parseAction(graph, action.FirstFragmentAction) 222 | if err != nil { 223 | return nil, err 224 | } 225 | 226 | rnode, err := parseAction(graph, action.SecondFragmentAction) 227 | if err != nil { 228 | return nil, err 229 | } 230 | 231 | _, err = graph.CreateEdge(name("e"), node, lnode) 232 | if err != nil { 233 | return nil, fmt.Errorf("error creating edge to first action: %w", err) 234 | } 235 | 236 | _, err = graph.CreateEdge(name("e"), node, rnode) 237 | if err != nil { 238 | return nil, fmt.Errorf("error creating edge to second action: %w", err) 239 | } 240 | 241 | return node, nil 242 | } 243 | 244 | var counter int 245 | 246 | func name(base string) string { 247 | counter++ 248 | 249 | return fmt.Sprintf("%s_%d", base, counter) 250 | } 251 | -------------------------------------------------------------------------------- /dot_windows.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "fmt" 5 | "runtime" 6 | 7 | "github.com/urfave/cli/v2" 8 | ) 9 | 10 | func init() { 11 | app.Commands = append(app.Commands, 12 | &cli.Command{ 13 | Name: "dot", 14 | Usage: fmt.Sprintf("(unavailable on %s) output the strategy graph as an SVG", runtime.GOOS), 15 | Flags: []cli.Flag{ 16 | &cli.BoolFlag{ 17 | Name: "verbose", 18 | Aliases: []string{"v"}, 19 | }, 20 | &cli.StringFlag{ 21 | Name: "output", 22 | Aliases: []string{"o"}, 23 | Value: "output.svg", 24 | }, 25 | }, 26 | ArgsUsage: "STRATEGY", 27 | Action: dot, 28 | }, 29 | ) 30 | } 31 | 32 | func dot(c *cli.Context) error { 33 | return cli.Exit(fmt.Sprintf("The 'dot' subcommand is not supported on %s.", runtime.GOOS), 1) 34 | } 35 | -------------------------------------------------------------------------------- /go.mod: -------------------------------------------------------------------------------- 1 | module github.com/getlantern/geneva-cli 2 | 3 | go 1.20 4 | 5 | require ( 6 | github.com/Crosse/godivert v0.0.0-20220114171035-c28a0cd613c8 7 | github.com/getlantern/appdir v0.0.0-20200615192800-a0ef1968f4da 8 | github.com/getlantern/common v1.1.1 9 | github.com/getlantern/geneva v0.0.0-20220118172914-bae4eeb57760 10 | github.com/getlantern/rot13 v0.0.0-20210901200056-01bce62cb8bb 11 | github.com/getlantern/yaml v0.0.0-20140912054538-97d86b60f57e 12 | github.com/goccy/go-graphviz v0.0.9 13 | github.com/google/gopacket v1.1.19 14 | github.com/kardianos/service v1.2.1 15 | github.com/urfave/cli/v2 v2.3.0 16 | golang.org/x/sys v0.0.0-20220114195835-da31bd327af9 17 | ) 18 | 19 | require ( 20 | github.com/cpuguy83/go-md2man/v2 v2.0.1 // indirect 21 | github.com/fogleman/gg v1.3.0 // indirect 22 | github.com/getlantern/context v0.0.0-20190109183933-c447772a6520 // indirect 23 | github.com/getlantern/errors v1.0.1 // indirect 24 | github.com/getlantern/hex v0.0.0-20220104173244-ad7e4b9194dc // indirect 25 | github.com/getlantern/hidden v0.0.0-20220104173330-f221c5a24770 // indirect 26 | github.com/getlantern/ops v0.0.0-20200403153110-8476b16edcd6 // indirect 27 | github.com/go-stack/stack v1.8.1 // indirect 28 | github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 // indirect 29 | github.com/mitchellh/go-homedir v1.1.0 // indirect 30 | github.com/pkg/errors v0.9.1 // indirect 31 | github.com/russross/blackfriday/v2 v2.1.0 // indirect 32 | golang.org/x/image v0.0.0-20211028202545-6944b10bf410 // indirect 33 | golang.org/x/net v0.0.0-20220114011407-0dd24b26b47d // indirect 34 | gopkg.in/getlantern/yaml.v1 v1.0.0-20140912054538-97d86b60f57e // indirect 35 | gopkg.in/yaml.v1 v1.0.0-20140924161607-9f9df34309c0 // indirect 36 | ) 37 | -------------------------------------------------------------------------------- /go.sum: -------------------------------------------------------------------------------- 1 | github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= 2 | github.com/Crosse/godivert v0.0.0-20220114171035-c28a0cd613c8 h1:cM4VqKja02zMAjILb8EX+KtIre0peWOvNsPERPxCMh0= 3 | github.com/Crosse/godivert v0.0.0-20220114171035-c28a0cd613c8/go.mod h1:SS0NMIXz52+h3PfdteYbLuSIKHCHvvpKxFoBOnT//k0= 4 | github.com/corona10/goimagehash v1.0.2 h1:pUfB0LnsJASMPGEZLj7tGY251vF+qLGqOgEP4rUs6kA= 5 | github.com/corona10/goimagehash v1.0.2/go.mod h1:/l9umBhvcHQXVtQO1V6Gp1yD20STawkhRnnX0D1bvVI= 6 | github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU= 7 | github.com/cpuguy83/go-md2man/v2 v2.0.1 h1:r/myEWzV9lfsM1tFLgDyu0atFtJ1fXn261LKYj/3DxU= 8 | github.com/cpuguy83/go-md2man/v2 v2.0.1/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o= 9 | github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= 10 | github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= 11 | github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= 12 | github.com/fogleman/gg v1.3.0 h1:/7zJX8F6AaYQc57WQCyN9cAIz+4bCJGO9B+dyW29am8= 13 | github.com/fogleman/gg v1.3.0/go.mod h1:R/bRT+9gY/C5z7JzPU0zXsXHKM4/ayA+zqcVNZzPa1k= 14 | github.com/getlantern/appdir v0.0.0-20200615192800-a0ef1968f4da h1:T/pxF37Z9SIQCHhMMUITZ3rhKRL0Noi9XxNwxKdBNw0= 15 | github.com/getlantern/appdir v0.0.0-20200615192800-a0ef1968f4da/go.mod h1:3vR6+jQdWfWojZ77w+htCqEF5MO/Y2twJOpAvFuM9po= 16 | github.com/getlantern/common v1.1.1 h1:fnWqYlrXbsI4T7xPr79tGx74p8Oz/vPO4iJLbHRGaUE= 17 | github.com/getlantern/common v1.1.1/go.mod h1:UTgpUrzCbisgRr4N5FkJubou6LsSpbrFjHcVM+1iF4w= 18 | github.com/getlantern/context v0.0.0-20190109183933-c447772a6520 h1:NRUJuo3v3WGC/g5YiyF790gut6oQr5f3FBI88Wv0dx4= 19 | github.com/getlantern/context v0.0.0-20190109183933-c447772a6520/go.mod h1:L+mq6/vvYHKjCX2oez0CgEAJmbq1fbb/oNJIWQkBybY= 20 | github.com/getlantern/errors v1.0.1 h1:XukU2whlh7OdpxnkXhNH9VTLVz0EVPGKDV5K0oWhvzw= 21 | github.com/getlantern/errors v1.0.1/go.mod h1:l+xpFBrCtDLpK9qNjxs+cHU6+BAdlBaxHqikB6Lku3A= 22 | github.com/getlantern/geneva v0.0.0-20220118172914-bae4eeb57760 h1:FyfzAEH6mV/NUx5bQZC/gb7b2Zy8EGi6s3Uk0VQyPGE= 23 | github.com/getlantern/geneva v0.0.0-20220118172914-bae4eeb57760/go.mod h1:Euj59VSTVff3AwctYBMZc9LBms03mtSulAteJKL8luY= 24 | github.com/getlantern/hex v0.0.0-20220104173244-ad7e4b9194dc h1:sue+aeVx7JF5v36H1HfvcGFImLpSD5goj8d+MitovDU= 25 | github.com/getlantern/hex v0.0.0-20220104173244-ad7e4b9194dc/go.mod h1:D9RWpXy/EFPYxiKUURo2TB8UBosbqkiLhttRrZYtvqM= 26 | github.com/getlantern/hidden v0.0.0-20220104173330-f221c5a24770 h1:cSrD9ryDfTV2yaur9Qk3rHYD414j3Q1rl7+L0AylxrE= 27 | github.com/getlantern/hidden v0.0.0-20220104173330-f221c5a24770/go.mod h1:GOQsoDnEHl6ZmNIL+5uVo+JWRFWozMEp18Izcb++H+A= 28 | github.com/getlantern/ops v0.0.0-20200403153110-8476b16edcd6 h1:QthAQCekS1YOeYWSvoHI6ZatlG4B+GBDLxV/2ZkBsTA= 29 | github.com/getlantern/ops v0.0.0-20200403153110-8476b16edcd6/go.mod h1:D5ao98qkA6pxftxoqzibIBBrLSUli+kYnJqrgBf9cIA= 30 | github.com/getlantern/rot13 v0.0.0-20210901200056-01bce62cb8bb h1:2GJMhsjopXkytAkhHFCsss8s2o21v9FNUw0evfbTCjI= 31 | github.com/getlantern/rot13 v0.0.0-20210901200056-01bce62cb8bb/go.mod h1:O0dNqH9hbXlOa9OpVdbACmTBfDPD+ENjbY0cPkzBd9g= 32 | github.com/getlantern/yaml v0.0.0-20140912054538-97d86b60f57e h1:tMFqZ7fjEhZ/DwXdODpaMZldTdLT8KrdTkZxwsZivOs= 33 | github.com/getlantern/yaml v0.0.0-20140912054538-97d86b60f57e/go.mod h1:SoTXbOvaDC1bH3QrlkU5kz/h12tU/hN54wSMUCdgEXs= 34 | github.com/go-stack/stack v1.8.1 h1:ntEHSVwIt7PNXNpgPmVfMrNhLtgjlmnZha2kOpuRiDw= 35 | github.com/go-stack/stack v1.8.1/go.mod h1:dcoOX6HbPZSZptuspn9bctJ+N/CnF5gGygcUP3XYfe4= 36 | github.com/goccy/go-graphviz v0.0.9 h1:s/FMMJ1Joj6La3S5ApO3Jk2cwM4LpXECC2muFx3IPQQ= 37 | github.com/goccy/go-graphviz v0.0.9/go.mod h1:wXVsXxmyMQU6TN3zGRttjNn3h+iCAS7xQFC6TlNvLhk= 38 | github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 h1:DACJavvAHhabrF08vX0COfcOBJRhZ8lUbR+ZWIs0Y5g= 39 | github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0/go.mod h1:E/TSTwGwJL78qG/PmXZO1EjYhfJinVAhrmmHX6Z8B9k= 40 | github.com/google/gopacket v1.1.19 h1:ves8RnFZPGiFnTS0uPQStjwru6uO6h+nlr9j6fL7kF8= 41 | github.com/google/gopacket v1.1.19/go.mod h1:iJ8V8n6KS+z2U1A8pUwu8bW5SyEMkXJB8Yo/Vo+TKTo= 42 | github.com/jessevdk/go-flags v1.4.0/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI= 43 | github.com/kardianos/service v1.2.1 h1:AYndMsehS+ywIS6RB9KOlcXzteWUzxgMgBymJD7+BYk= 44 | github.com/kardianos/service v1.2.1/go.mod h1:CIMRFEJVL+0DS1a3Nx06NaMn4Dz63Ng6O7dl0qH0zVM= 45 | github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y= 46 | github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0= 47 | github.com/nfnt/resize v0.0.0-20160724205520-891127d8d1b5 h1:BvoENQQU+fZ9uukda/RzCAL/191HHwJA5b13R6diVlY= 48 | github.com/nfnt/resize v0.0.0-20160724205520-891127d8d1b5/go.mod h1:jpp1/29i3P1S/RLdc7JQKbRpFeM1dOBd8T9ki5s+AY8= 49 | github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4= 50 | github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0= 51 | github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM= 52 | github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= 53 | github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM= 54 | github.com/russross/blackfriday/v2 v2.1.0 h1:JIOH55/0cWyOuilr9/qlrm0BSXldqnqwMsf35Ld67mk= 55 | github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM= 56 | github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc= 57 | github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME= 58 | github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY= 59 | github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg= 60 | github.com/urfave/cli/v2 v2.3.0 h1:qph92Y649prgesehzOrQjdWyxFOp/QVM+6imKHad91M= 61 | github.com/urfave/cli/v2 v2.3.0/go.mod h1:LJmUH05zAU44vOAcrfzZQKsZbVcdbOG8rtL3/XcUArI= 62 | golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= 63 | golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI= 64 | golang.org/x/crypto v0.0.0-20200204104054-c9f3fb736b72/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto= 65 | golang.org/x/image v0.0.0-20200119044424-58c23975cae1/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0= 66 | golang.org/x/image v0.0.0-20211028202545-6944b10bf410 h1:hTftEOvwiOq2+O8k2D5/Q7COC7k5Qcrgc2TFURJYnvQ= 67 | golang.org/x/image v0.0.0-20211028202545-6944b10bf410/go.mod h1:023OzeP/+EPmXeapQh35lcL3II3LrY8Ic+EFFKVhULM= 68 | golang.org/x/lint v0.0.0-20200302205851-738671d3881b/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY= 69 | golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg= 70 | golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg= 71 | golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s= 72 | golang.org/x/net v0.0.0-20220114011407-0dd24b26b47d h1:1n1fc535VhN8SYtD4cDUyNlfpAF2ROMM9+11equK3hs= 73 | golang.org/x/net v0.0.0-20220114011407-0dd24b26b47d/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y= 74 | golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= 75 | golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= 76 | golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 77 | golang.org/x/sys v0.0.0-20201015000850-e3ed0017c211/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 78 | golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 79 | golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 80 | golang.org/x/sys v0.0.0-20211210111614-af8b64212486/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= 81 | golang.org/x/sys v0.0.0-20220114195835-da31bd327af9 h1:XfKQ4OlFl8okEOr5UvAqFRVj8pY/4yfcXrddB8qAbU0= 82 | golang.org/x/sys v0.0.0-20220114195835-da31bd327af9/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= 83 | golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo= 84 | golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= 85 | golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ= 86 | golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= 87 | golang.org/x/tools v0.0.0-20200130002326-2f3ba24bd6e7/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28= 88 | golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= 89 | gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM= 90 | gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= 91 | gopkg.in/getlantern/yaml.v1 v1.0.0-20140912054538-97d86b60f57e h1:Kj/lj/x8ND00gJH5pR381Hws/N1GhQQHD/sqstm+tX0= 92 | gopkg.in/getlantern/yaml.v1 v1.0.0-20140912054538-97d86b60f57e/go.mod h1:QLMVhmQbZYZI9Ctc9MVAXEPxAbYCPub4mBuhAf6kPWE= 93 | gopkg.in/yaml.v1 v1.0.0-20140924161607-9f9df34309c0 h1:POO/ycCATvegFmVuPpQzZFJ+pGZeX22Ufu6fibxDVjU= 94 | gopkg.in/yaml.v1 v1.0.0-20140924161607-9f9df34309c0/go.mod h1:WDnlLJ4WF5VGsH/HVa3CI79GS0ol3YnhVnKP89i0kNg= 95 | gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= 96 | gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= 97 | gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo= 98 | gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= 99 | -------------------------------------------------------------------------------- /intercept.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "fmt" 5 | "io" 6 | "log" 7 | "net" 8 | "os" 9 | "path/filepath" 10 | "strings" 11 | "sync" 12 | "time" 13 | 14 | "github.com/getlantern/appdir" 15 | "github.com/getlantern/common" 16 | "github.com/getlantern/geneva" 17 | "github.com/getlantern/geneva/strategy" 18 | "github.com/getlantern/rot13" 19 | "github.com/getlantern/yaml" 20 | "github.com/kardianos/service" 21 | "github.com/urfave/cli/v2" 22 | ) 23 | 24 | type myLog struct { 25 | svcLogger service.Logger 26 | genericLogger *log.Logger 27 | logFile *os.File 28 | } 29 | 30 | func newLogger(svc service.Service) *myLog { 31 | svcLogger, err := svc.Logger(nil) 32 | if err != nil { 33 | log.Fatal(err) 34 | } 35 | 36 | logFile, err := os.OpenFile(LOG_FILE, os.O_APPEND|os.O_WRONLY|os.O_CREATE, 0o644) 37 | if err != nil { 38 | log.Fatal(err) 39 | } 40 | fileLogger := log.Default() 41 | fileLogger.SetOutput(logFile) 42 | 43 | return &myLog{svcLogger, fileLogger, logFile} 44 | } 45 | 46 | func (l *myLog) Info(v ...interface{}) { 47 | l.svcLogger.Info(v...) 48 | l.genericLogger.Print(v...) 49 | } 50 | 51 | func (l *myLog) Infof(format string, a ...interface{}) { 52 | l.svcLogger.Infof(format, a...) 53 | l.genericLogger.Printf(format, a...) 54 | } 55 | 56 | func (l *myLog) Warning(v ...interface{}) { 57 | l.svcLogger.Warning(v...) 58 | l.genericLogger.Print(v...) 59 | } 60 | 61 | func (l *myLog) Warningf(format string, a ...interface{}) { 62 | l.svcLogger.Warningf(format, a...) 63 | l.genericLogger.Printf(format, a...) 64 | } 65 | 66 | func (l *myLog) Error(v ...interface{}) { 67 | l.svcLogger.Error(v...) 68 | l.genericLogger.Print(v...) 69 | } 70 | 71 | func (l *myLog) Errorf(format string, a ...interface{}) { 72 | l.svcLogger.Errorf(format, a...) 73 | l.genericLogger.Printf(format, a...) 74 | } 75 | 76 | var logger *myLog 77 | 78 | const ( 79 | LOG_FILE = `geneva-proxy.log` 80 | STATISTICS_INTERVAL_CLI = 5 81 | STATISTICS_INTERVAL_SVC = 300 82 | ) 83 | 84 | type StatisticsType int 85 | 86 | const ( 87 | Intercepted = iota 88 | Injected 89 | Errors 90 | ) 91 | 92 | type Statistics struct { 93 | InterceptedPackets [2]uint64 94 | InjectedPackets [2]uint64 95 | Errors uint64 96 | } 97 | 98 | func (s *Statistics) Increment(st StatisticsType, dir strategy.Direction) { 99 | switch st { 100 | case Intercepted: 101 | s.InterceptedPackets[dir]++ 102 | case Injected: 103 | s.InjectedPackets[dir]++ 104 | case Errors: 105 | s.Errors++ 106 | } 107 | } 108 | 109 | func (s *Statistics) Print() { 110 | logger.Infof("intercepted/injected packets: %d/%d inbound, %d/%d outbound; %d errors\n", 111 | s.InterceptedPackets[strategy.DirectionInbound], 112 | s.InjectedPackets[strategy.DirectionInbound], 113 | s.InterceptedPackets[strategy.DirectionOutbound], 114 | s.InjectedPackets[strategy.DirectionOutbound], 115 | s.Errors, 116 | ) 117 | } 118 | 119 | type Interceptor interface { 120 | Intercept() error 121 | SetProxyIPs([]net.IP) 122 | SetStrategy(strategy string) error 123 | Strategy() strategy.Strategy 124 | 125 | service.Interface 126 | } 127 | 128 | type interceptor struct { 129 | wg sync.WaitGroup 130 | quit chan struct{} 131 | 132 | strategy *strategy.Strategy 133 | iface string 134 | ips []net.IP 135 | statistics Statistics 136 | } 137 | 138 | func (i *interceptor) SetProxyIPs(ips []net.IP) { 139 | i.ips = ips 140 | } 141 | 142 | func (i *interceptor) SetStrategy(strat string) error { 143 | s, err := geneva.NewStrategy(strat) 144 | if err != nil { 145 | return err 146 | } 147 | i.strategy = s 148 | return nil 149 | } 150 | 151 | func (i *interceptor) Strategy() strategy.Strategy { 152 | return *i.strategy 153 | } 154 | 155 | func (i *interceptor) Start(s service.Service) error { 156 | logger.Info("starting up") 157 | 158 | i.wg.Add(1) 159 | go func() { 160 | logger.Info("starting statistics thread") 161 | period := STATISTICS_INTERVAL_SVC * time.Second 162 | if service.Interactive() { 163 | period = STATISTICS_INTERVAL_CLI * time.Second 164 | } 165 | timer := time.NewTicker(period) 166 | for { 167 | select { 168 | case <-i.quit: 169 | i.wg.Done() 170 | return 171 | case <-timer.C: 172 | i.statistics.Print() 173 | } 174 | } 175 | }() 176 | 177 | i.wg.Add(1) 178 | go func() { 179 | if err := i.Intercept(); err != nil { 180 | logger.Error(err) 181 | } 182 | 183 | i.wg.Done() 184 | 185 | if !service.Interactive() { 186 | s.Stop() 187 | } 188 | }() 189 | 190 | return nil 191 | } 192 | 193 | func (i *interceptor) Stop(s service.Service) error { 194 | logger.Info("stopping all threads") 195 | close(i.quit) 196 | i.wg.Wait() 197 | i.statistics.Print() 198 | 199 | logger.logFile.Close() 200 | 201 | if service.Interactive() { 202 | os.Exit(0) 203 | } 204 | 205 | return nil 206 | } 207 | 208 | func init() { 209 | app.Commands = append(app.Commands, 210 | &cli.Command{ 211 | Name: "intercept", 212 | Usage: "Run a strategy on live network traffic", 213 | Flags: []cli.Flag{ 214 | &cli.StringFlag{ 215 | Name: "strategy", 216 | Aliases: []string{"s"}, 217 | Usage: "A Geneva `STRATEGY` to run", 218 | }, 219 | &cli.StringFlag{ 220 | Name: "strategyFile", 221 | Usage: "Load Geneva strategy from `FILE`", 222 | }, 223 | &cli.BoolFlag{ 224 | Name: "fromFlashlight", 225 | Usage: "Load strategy and endpoint information from flashlight's proxies.yaml file (overrides other options)", 226 | }, 227 | &cli.StringFlag{ 228 | Name: "interface", 229 | Aliases: []string{"i"}, 230 | Usage: "Network interface on which to intercept traffic", 231 | }, 232 | &cli.StringFlag{ 233 | Name: "ips", 234 | Usage: "comma-separated list of IP:port tuples to proxy", 235 | }, 236 | &cli.StringFlag{ 237 | Name: "service", 238 | Usage: "Control the system service", 239 | }, 240 | }, 241 | Action: intercept, 242 | }) 243 | 244 | } 245 | 246 | func intercept(c *cli.Context) error { 247 | interceptor, err := NewInterceptor(c.String("interface")) 248 | if err != nil { 249 | return err 250 | } 251 | 252 | svcConfig := service.Config{ 253 | Name: "geneva-proxy", 254 | DisplayName: "Geneva proxy", 255 | Description: "Geneva proxy", 256 | Arguments: []string{"intercept", "--strategyFile", `strategy.txt`, "--fromFlashlight"}, 257 | } 258 | 259 | svc, err := service.New(interceptor, &svcConfig) 260 | if err != nil { 261 | return cli.Exit(err, 1) 262 | } 263 | 264 | if cmd := c.String("service"); cmd != "" { 265 | if err := service.Control(svc, cmd); err != nil { 266 | // logger.Errorf("valid actions: %q\n", service.ControlAction) 267 | return cli.Exit(err, 1) 268 | } 269 | return nil 270 | } 271 | 272 | logger = newLogger(svc) 273 | 274 | var ips []net.IP 275 | var strat string 276 | 277 | if c.Bool("fromFlashlight") { 278 | ips, strat, err = parseProxyFile() 279 | if err != nil { 280 | logger.Errorf("error parsing proxies.yaml: %v\n", err) 281 | return cli.Exit(err, 1) 282 | } 283 | interceptor.SetProxyIPs(ips) 284 | 285 | logger.Info("parsed proxies.yaml\n") 286 | } 287 | 288 | // command-line options can override some of flashlight's config 289 | if c.String("strategy") != "" && c.String("strategyFile") != "" { 290 | return cli.Exit("only one of -strategy and -strategyFile should be used", 1) 291 | } 292 | 293 | s := c.String("strategy") 294 | if s == "" { 295 | strategyFile := c.String("strategyFile") 296 | if strategyFile == "" { 297 | return cli.Exit("must provide one of -strategy or -strategyFile", 1) 298 | } 299 | 300 | in, err := os.ReadFile(strategyFile) 301 | if err != nil { 302 | return cli.Exit(fmt.Sprintf("cannot open %s: %v", strategyFile, err), 1) 303 | } 304 | s = string(in) 305 | } 306 | 307 | if s != "" { 308 | if strat != "" && c.Bool("fromFlashlight") { 309 | logger.Info("overriding strategy from proxies.yaml with command-line argument") 310 | } 311 | strat = s 312 | } 313 | 314 | interceptor.SetStrategy(strat) 315 | if err != nil { 316 | return cli.Exit(err, 1) 317 | } 318 | 319 | ipsFromArgs := strings.Split(c.String("ips"), ",") 320 | if len(ipsFromArgs) > 0 { 321 | if c.Bool("fromFlashlight") { 322 | logger.Info("appending IPs from command line to list from proxies.yaml") 323 | } 324 | 325 | for _, ip := range ipsFromArgs { 326 | ips = append(ips, net.ParseIP(strings.Split(ip, ":")[0])) 327 | } 328 | interceptor.SetProxyIPs(ips) 329 | } 330 | 331 | logger.Infof(`outbound \/ inbound %q`, interceptor.Strategy()) 332 | 333 | err = svc.Run() 334 | 335 | return err 336 | } 337 | 338 | func parseProxyFile() ([]net.IP, string, error) { 339 | ips := make([]net.IP, 0, 4) 340 | 341 | // get the values from proxies.yaml 342 | configDir := appdir.General("Lantern") 343 | proxiesFile, err := os.Open(filepath.Join(configDir, "proxies.yaml")) 344 | if err != nil { 345 | return nil, "", cli.Exit(fmt.Sprintf("cannot open proxies.yaml: %v", err), 1) 346 | } 347 | defer proxiesFile.Close() 348 | 349 | wrapped := rot13.NewReader(proxiesFile) 350 | data, err := io.ReadAll(wrapped) 351 | if err != nil { 352 | return nil, "", cli.Exit(fmt.Sprintf("cannot read proxies.yaml: %v", err), 1) 353 | } 354 | 355 | config := make(map[string]common.ChainedServerInfo, 2) 356 | err = yaml.Unmarshal(data, &config) 357 | if err != nil { 358 | return nil, "", cli.Exit(fmt.Sprintf("cannot parse proxies.yaml: %v", err), 1) 359 | } 360 | 361 | for _, v := range config { 362 | switch v.Addr { 363 | case "multiplexed": 364 | ips = append(ips, net.ParseIP(v.MultiplexedAddr)) 365 | default: 366 | logger.Warningf("unhandled transport %q\n", v.Addr) 367 | } 368 | } 369 | 370 | // TODO: actually get strategy from proxies.yaml 371 | // s, err := strategy.ParseStrategy(strat) 372 | // if err != nil { 373 | // return nil, "", err 374 | // } 375 | 376 | return ips, "", nil 377 | } 378 | -------------------------------------------------------------------------------- /intercept_default.go: -------------------------------------------------------------------------------- 1 | //go:build !windows 2 | 3 | package main 4 | 5 | import ( 6 | "fmt" 7 | "runtime" 8 | ) 9 | 10 | func NewInterceptor(_ string) (Interceptor, error) { 11 | return nil, fmt.Errorf("intercept not supported on %s", runtime.GOOS) 12 | } 13 | 14 | func (p *interceptor) Intercept() error { 15 | return fmt.Errorf("intercept not supported on %s", runtime.GOOS) 16 | } 17 | -------------------------------------------------------------------------------- /intercept_windows.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "fmt" 5 | "net/http" 6 | _ "net/http/pprof" 7 | "os" 8 | "path/filepath" 9 | "strings" 10 | "syscall" 11 | "unsafe" 12 | 13 | "github.com/Crosse/godivert" 14 | "github.com/getlantern/geneva/strategy" 15 | "github.com/google/gopacket" 16 | "github.com/google/gopacket/layers" 17 | "github.com/urfave/cli/v2" 18 | "golang.org/x/sys/windows" 19 | ) 20 | 21 | var ( 22 | qpc uintptr 23 | iphlpapi *windows.LazyDLL 24 | ) 25 | 26 | func init() { 27 | dll := windows.NewLazySystemDLL("kernel32.dll") 28 | if err := dll.Load(); err != nil { 29 | panic(fmt.Errorf("error loading kernel32.dll: %v", err)) 30 | } 31 | 32 | _qpc := dll.NewProc("QueryPerformanceCounter") 33 | if err := _qpc.Find(); err != nil { 34 | panic(fmt.Errorf("error finding QueryPerformanceCounter: %v", err)) 35 | } 36 | 37 | qpc = _qpc.Addr() 38 | 39 | iphlpapi = windows.NewLazySystemDLL("Iphlpapi.dll") 40 | if err := iphlpapi.Load(); err != nil { 41 | panic(fmt.Errorf("error loading Iphlpapi.dll")) 42 | } 43 | } 44 | 45 | func NewInterceptor(iface string) (Interceptor, error) { 46 | return &interceptor{ 47 | quit: make(chan struct{}), 48 | iface: iface, 49 | }, nil 50 | } 51 | 52 | func (p *interceptor) Intercept() error { 53 | go func() { 54 | logger.Info(http.ListenAndServe("localhost:6060", nil)) 55 | }() 56 | 57 | filter := "ip and !loopback" 58 | if p.iface != "" { 59 | idx, err := getAdapter(p.iface) 60 | if err != nil { 61 | return err 62 | } 63 | filter = fmt.Sprintf("%s and ifIdx == %d", filter, idx) 64 | 65 | logger.Infof("intercepting traffic on %s (idx %d)\n", p.iface, idx) 66 | } else { 67 | logger.Info("intercepting traffic on all interfaces") 68 | } 69 | 70 | ips := make([]string, 0, len(p.ips)) 71 | for _, ip := range p.ips { 72 | if ip == nil { 73 | continue 74 | } 75 | 76 | ips = append(ips, fmt.Sprintf("remoteAddr == %s", ip)) 77 | } 78 | 79 | if len(ips) > 0 { 80 | ipFilter := strings.Join(ips, " or ") 81 | if filter == "" { 82 | filter = ipFilter 83 | } else { 84 | filter = fmt.Sprintf("%s and (%s)", filter, ipFilter) 85 | } 86 | } 87 | 88 | logger.Infof("using filter %q\n", filter) 89 | 90 | ex, err := os.Executable() 91 | if err != nil { 92 | return fmt.Errorf("Can't locate dll location") 93 | } 94 | exPath := filepath.Dir(ex) 95 | dll64 := filepath.Join(exPath, "WinDivert64.dll") 96 | dll32 := filepath.Join(exPath, "WinDivert32.dll") 97 | 98 | logger.Info("opening handle to WinDivert") 99 | godivert.LoadDLL(dll64, dll32) 100 | 101 | winDivert, err := godivert.OpenHandle( 102 | filter, 103 | godivert.LayerNetwork, 104 | godivert.PriorityDefault, 105 | godivert.OpenFlagFragments, 106 | ) 107 | if err != nil { 108 | return fmt.Errorf("error initializing WinDivert: %v", err) 109 | } 110 | 111 | defer func() { 112 | logger.Info("closing WinDivert handle") 113 | 114 | if err := winDivert.Close(); err != nil { 115 | logger.Infof("error closing WinDivert handle: %v\n", err) 116 | } 117 | }() 118 | 119 | packetChan, err := winDivert.Packets() 120 | if err != nil { 121 | return fmt.Errorf("error getting packets: %v\n", err) 122 | } 123 | 124 | for { 125 | select { 126 | case pkt := <-packetChan: 127 | if err = p.processPacket(winDivert, pkt); err != nil { 128 | logger.Error(err) 129 | } 130 | case <-p.quit: 131 | return nil 132 | } 133 | } 134 | } 135 | 136 | func (p *interceptor) processPacket(winDivert *godivert.WinDivertHandle, pkt *godivert.Packet) error { 137 | pkt.VerifyParsed() 138 | 139 | var dir strategy.Direction 140 | if pkt.Direction() == godivert.WinDivertDirectionInbound { 141 | dir = strategy.DirectionInbound 142 | } else { 143 | dir = strategy.DirectionOutbound 144 | } 145 | 146 | p.statistics.Increment(Intercepted, dir) 147 | 148 | var firstLayer gopacket.LayerType 149 | 150 | switch pkt.IpVersion() { 151 | case 4: 152 | firstLayer = layers.LayerTypeIPv4 153 | case 6: 154 | firstLayer = layers.LayerTypeIPv6 155 | default: 156 | logger.Info("bypassing Geneva for non-IP packet") 157 | p.statistics.Increment(Injected, dir) 158 | return sendPacket(winDivert, pkt, dir, &p.statistics) 159 | } 160 | 161 | gopkt := gopacket.NewPacket(pkt.Raw, firstLayer, gopacket.Default) 162 | 163 | results, err := p.strategy.Apply(gopkt, dir) 164 | if err != nil { 165 | p.statistics.Increment(Errors, dir) 166 | p.statistics.Increment(Injected, dir) 167 | if err2 := sendPacket(winDivert, pkt, dir, &p.statistics); err != nil { 168 | return fmt.Errorf("failed to send packet after error applying strategy: %w", err2) 169 | } 170 | 171 | return fmt.Errorf("error applying strategy: %v\n", err) 172 | } 173 | 174 | for i, packet := range results { 175 | newPkt := godivert.Packet{ 176 | Raw: packet.Data(), 177 | Addr: &godivert.WinDivertAddress{ 178 | Timestamp: pkt.Addr.Timestamp + int64(i), 179 | Flags: pkt.Addr.Flags, 180 | Data: pkt.Addr.Data, 181 | }, 182 | PacketLen: uint(len(packet.Data())), 183 | } 184 | 185 | newPkt.VerifyParsed() 186 | 187 | if err = sendPacket(winDivert, &newPkt, dir, &p.statistics); err != nil { 188 | return err 189 | } 190 | } 191 | 192 | return nil 193 | } 194 | 195 | func sendPacket(handle *godivert.WinDivertHandle, pkt *godivert.Packet, dir strategy.Direction, stats *Statistics) error { 196 | if sent, err := handle.Send(pkt); err != nil { 197 | stats.Increment(Errors, dir) 198 | return fmt.Errorf("error sending packet: %v", err) 199 | } else if sent != pkt.PacketLen { 200 | stats.Increment(Errors, dir) 201 | return fmt.Errorf("sent %d bytes, but expected %d", sent, pkt.PacketLen) 202 | } 203 | 204 | stats.Increment(Injected, dir) 205 | return nil 206 | } 207 | 208 | func now() int64 { 209 | var now uint64 210 | 211 | _, _, _ = syscall.Syscall(qpc, 1, uintptr(unsafe.Pointer(&now)), 0, 0) 212 | 213 | return int64(now) 214 | } 215 | 216 | func getAdapter(iface string) (uint32, error) { 217 | // https://docs.microsoft.com/en-us/windows/win32/api/iphlpapi/nf-iphlpapi-getadaptersaddresses 218 | // "The recommended method of calling the GetAi daptersAddresses function is to pre-allocate a 219 | // 15KB working buffer pointed to by the AdapterAddresses parameter. On typical computers, 220 | // this dramatically reduces the chances that the GetAdaptersAddresses function returns 221 | // ERROR_BUFFER_OVERFLOW, which would require calling GetAdaptersAddresses function multiple 222 | // times." 223 | bufLenBytes := 15 * 1024 224 | info := make( 225 | []windows.IpAdapterAddresses, 226 | bufLenBytes/int(unsafe.Sizeof(windows.IpAdapterAddresses{})), 227 | ) 228 | ol := uint32(bufLenBytes) 229 | 230 | err := windows.GetAdaptersAddresses(windows.AF_UNSPEC, 0, 0, &info[0], &ol) 231 | if err != nil { 232 | return 0, err 233 | } 234 | 235 | a := &info[0] 236 | for a != nil { 237 | // fmt.Println(windows.BytePtrToString(a.AdapterName)) 238 | // fmt.Println(windows.UTF16PtrToString(a.FriendlyName)) 239 | if windows.BytePtrToString(a.AdapterName) == iface || 240 | windows.UTF16PtrToString(a.FriendlyName) == iface { 241 | return a.IfIndex, nil 242 | } 243 | 244 | a = a.Next 245 | } 246 | 247 | return 0, fmt.Errorf("no adapter found") 248 | } 249 | 250 | func listAdaptersWrapper(c *cli.Context) error { 251 | return ListAdapters() 252 | } 253 | 254 | func ListAdapters() error { 255 | bufLenBytes := 15 * 1024 256 | info := make( 257 | []windows.IpAdapterAddresses, 258 | bufLenBytes/int(unsafe.Sizeof(windows.IpAdapterAddresses{})), 259 | ) 260 | ol := uint32(bufLenBytes) 261 | 262 | err := windows.GetAdaptersAddresses(windows.AF_UNSPEC, 0, 0, &info[0], &ol) 263 | if err != nil { 264 | return err 265 | } 266 | 267 | fmt.Println("Found Adapters") 268 | a := &info[0] 269 | for a != nil { 270 | fmt.Printf("%s, id=%v\n", windows.UTF16PtrToString(a.FriendlyName), a.IfIndex) 271 | fmt.Printf("\t%s\n", windows.BytePtrToString(a.AdapterName)) 272 | 273 | a = a.Next 274 | } 275 | 276 | return nil 277 | 278 | } 279 | -------------------------------------------------------------------------------- /main.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "encoding/json" 5 | "fmt" 6 | "os" 7 | "path/filepath" 8 | 9 | "sort" 10 | 11 | "github.com/urfave/cli/v2" 12 | ) 13 | 14 | var app = &cli.App{ 15 | Name: "geneva", 16 | Usage: "Genetic Evasion for windows", 17 | UseShortOptionHandling: true, 18 | Commands: make([]*cli.Command, 0, 4), 19 | } 20 | 21 | type Command struct { 22 | Name string `json:"name"` 23 | CmdStr string `json:"command"` 24 | Args []string `json:"args"` 25 | } 26 | 27 | type savedCommands struct { 28 | Items []Command `json:"saved commands"` 29 | } 30 | 31 | func init() { 32 | fromFile := func(c *cli.Context) error { 33 | fmt.Println(app.Name) 34 | fmt.Println(c.String("command")) 35 | 36 | ex, err := os.Executable() 37 | if err != nil { 38 | fmt.Println(err) 39 | return err 40 | } 41 | exPath := filepath.Dir(ex) 42 | 43 | var savedComs savedCommands 44 | data, err := os.ReadFile(filepath.Join(exPath, "saved_commands.json")) 45 | if err != nil { 46 | fmt.Println(err) 47 | return err 48 | } 49 | 50 | err = json.Unmarshal(data, &savedComs) 51 | 52 | if err != nil { 53 | // print out if error is not nil 54 | fmt.Println(err) 55 | } 56 | 57 | index := -1 58 | desiredCom := c.String("command") 59 | 60 | for i, s := range savedComs.Items { 61 | fmt.Println(i) 62 | fmt.Println(s.Name) 63 | if s.Name == desiredCom { 64 | index = i 65 | } 66 | } 67 | 68 | if index < 0 { 69 | fmt.Printf("Stored command named %s is not found", desiredCom) 70 | return nil 71 | } 72 | 73 | chosenCommand := savedComs.Items[index] 74 | 75 | // fmt.Println(commands) 76 | realArgs := append([]string{os.Args[0], chosenCommand.CmdStr}, chosenCommand.Args...) 77 | fmt.Println(realArgs) 78 | 79 | _ = app.Run(realArgs) 80 | 81 | return nil 82 | } 83 | 84 | app.Commands = append(app.Commands, &cli.Command{ 85 | Name: "list-adapters", 86 | Usage: "Lists the available adapters", 87 | Action: listAdaptersWrapper, 88 | Flags: []cli.Flag{}, 89 | }) 90 | 91 | app.Commands = append(app.Commands, &cli.Command{ 92 | Name: "saved-command", 93 | Usage: "Runs commands from config file", 94 | Action: fromFile, 95 | Flags: []cli.Flag{ 96 | &cli.StringFlag{ 97 | Name: "command", 98 | Aliases: []string{"c"}, 99 | Value: "default", 100 | Required: true, 101 | }, 102 | }, 103 | }) 104 | 105 | } 106 | 107 | func main() { 108 | sort.Sort(cli.FlagsByName(app.Flags)) 109 | sort.Sort(cli.CommandsByName(app.Commands)) 110 | 111 | for _, c := range app.Commands { 112 | sort.Sort(cli.FlagsByName(c.Flags)) 113 | } 114 | 115 | err := app.Run(os.Args) 116 | if err != nil { 117 | fmt.Fprintf(os.Stderr, "%v\n", err) 118 | } 119 | } 120 | -------------------------------------------------------------------------------- /run_pcap.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "encoding/binary" 5 | "fmt" 6 | "net" 7 | "os" 8 | 9 | "github.com/getlantern/geneva" 10 | "github.com/getlantern/geneva/strategy" 11 | "github.com/google/gopacket" 12 | "github.com/google/gopacket/layers" 13 | "github.com/google/gopacket/pcapgo" 14 | "github.com/urfave/cli/v2" 15 | ) 16 | 17 | func init() { 18 | app.Commands = append(app.Commands, 19 | &cli.Command{ 20 | Name: "run-pcap", 21 | Usage: "Run a PCAP file through a strategy and output the resulting packets in a new PCAP", 22 | Flags: []cli.Flag{ 23 | &cli.BoolFlag{ 24 | Name: "force", 25 | Usage: "Overwrite destination file if it exists", 26 | Aliases: []string{"f"}, 27 | }, 28 | &cli.StringFlag{ 29 | Name: "input", 30 | Aliases: []string{"i"}, 31 | Value: "input.pcap", 32 | Required: true, 33 | }, 34 | &cli.StringFlag{ 35 | Name: "output", 36 | Aliases: []string{"o"}, 37 | Value: "output.pcap", 38 | Required: true, 39 | }, 40 | }, 41 | Action: runPcap, 42 | }) 43 | } 44 | 45 | type FlowTable map[uint32]*Flow 46 | 47 | type Flow struct { 48 | srcIP net.IP 49 | dstIP net.IP 50 | srcPort uint16 51 | dstPort uint16 52 | checksum uint32 53 | } 54 | 55 | func (f *Flow) DirectionEqual(flow *Flow) bool { 56 | return f.srcIP.Equal(flow.srcIP) && 57 | f.dstIP.Equal(flow.dstIP) && 58 | f.srcPort == flow.srcPort && 59 | f.dstPort == flow.dstPort 60 | } 61 | 62 | func NewFlow(pkt gopacket.Packet) *Flow { 63 | flow := &Flow{} 64 | 65 | if ipv4, ok := pkt.NetworkLayer().(*layers.IPv4); ok && ipv4 != nil { 66 | flow.srcIP = ipv4.SrcIP 67 | flow.dstIP = ipv4.DstIP 68 | 69 | flow.checksum ^= binary.BigEndian.Uint32(ipv4.SrcIP) 70 | flow.checksum ^= binary.BigEndian.Uint32(ipv4.DstIP) 71 | } else if ipv6, ok := pkt.NetworkLayer().(*layers.IPv6); ok && ipv6 != nil { 72 | flow.srcIP = ipv6.SrcIP 73 | flow.dstIP = ipv6.DstIP 74 | 75 | flow.checksum ^= binary.BigEndian.Uint32(ipv6.SrcIP[0:4]) 76 | flow.checksum ^= binary.BigEndian.Uint32(ipv6.SrcIP[4:8]) 77 | flow.checksum ^= binary.BigEndian.Uint32(ipv6.SrcIP[8:12]) 78 | flow.checksum ^= binary.BigEndian.Uint32(ipv6.SrcIP[12:]) 79 | 80 | flow.checksum ^= binary.BigEndian.Uint32(ipv6.DstIP[0:4]) 81 | flow.checksum ^= binary.BigEndian.Uint32(ipv6.DstIP[4:8]) 82 | flow.checksum ^= binary.BigEndian.Uint32(ipv6.DstIP[8:12]) 83 | flow.checksum ^= binary.BigEndian.Uint32(ipv6.DstIP[12:]) 84 | } 85 | 86 | if tcp, ok := pkt.TransportLayer().(*layers.TCP); ok && tcp != nil { 87 | flow.srcPort = uint16(tcp.SrcPort) 88 | flow.dstPort = uint16(tcp.DstPort) 89 | 90 | flow.checksum ^= uint32(tcp.SrcPort) 91 | flow.checksum ^= uint32(tcp.DstPort) 92 | } else if udp, ok := pkt.TransportLayer().(*layers.UDP); ok && udp != nil { 93 | flow.srcPort = uint16(udp.SrcPort) 94 | flow.dstPort = uint16(udp.DstPort) 95 | 96 | flow.checksum ^= uint32(udp.SrcPort) 97 | flow.checksum ^= uint32(udp.DstPort) 98 | } 99 | 100 | return flow 101 | } 102 | 103 | func runPcap(c *cli.Context) error { 104 | input := c.String("input") 105 | output := c.String("output") 106 | strat := c.Args().First() 107 | 108 | s, err := geneva.NewStrategy(strat) 109 | if err != nil { 110 | return cli.Exit("invalid strategy", 1) 111 | } 112 | 113 | i, err := os.Open(input) 114 | if err != nil { 115 | return cli.Exit(fmt.Sprintf("error opening %s: %v", input, err), 1) 116 | } 117 | defer i.Close() 118 | 119 | r, err := pcapgo.NewReader(i) 120 | if err != nil { 121 | return cli.Exit(fmt.Sprintf("error reading %s: %v", input, err), 1) 122 | } 123 | 124 | source := gopacket.NewPacketSource(r, r.LinkType()) 125 | 126 | flags := os.O_CREATE | os.O_WRONLY 127 | if !c.Bool("force") { 128 | flags |= os.O_EXCL 129 | } 130 | 131 | o, err := os.OpenFile(output, flags, 0o644) 132 | if err != nil { 133 | return cli.Exit(fmt.Sprintf("error opening %s: %v", input, err), 1) 134 | } 135 | defer o.Close() 136 | 137 | w := pcapgo.NewWriter(o) 138 | if err = w.WriteFileHeader(65536, layers.LinkTypeEthernet); err != nil { 139 | return cli.Exit(fmt.Sprintf("while writing file header: %v", err), 1) 140 | } 141 | 142 | // Set up the world's worst flow tracker 143 | flows := make(FlowTable) 144 | 145 | count := 0 146 | outputCount := 0 147 | 148 | for pkt := range source.Packets() { 149 | flow := NewFlow(pkt) 150 | 151 | var ( 152 | found *Flow 153 | dir strategy.Direction 154 | dirString string 155 | ok bool 156 | ) 157 | 158 | if found, ok = flows[flow.checksum]; !ok { 159 | flows[flow.checksum] = flow 160 | found = flow 161 | } 162 | 163 | if flow.DirectionEqual(found) { 164 | dir = strategy.DirectionOutbound 165 | dirString = "outbound" 166 | } else { 167 | dir = strategy.DirectionInbound 168 | dirString = " inbound" 169 | } 170 | 171 | fmt.Printf("[%4d] %s:%d -> %s:%d (%s): ", 172 | count, 173 | pkt.NetworkLayer().(*layers.IPv4).SrcIP, 174 | pkt.TransportLayer().(*layers.TCP).SrcPort, 175 | pkt.NetworkLayer().(*layers.IPv4).DstIP, 176 | pkt.TransportLayer().(*layers.TCP).DstPort, 177 | dirString) 178 | 179 | result, err := s.Apply(pkt, dir) 180 | if err != nil { 181 | return cli.Exit(fmt.Sprintf("error applying strategy: %v", err), 1) 182 | } 183 | 184 | fmt.Printf("=> %d packet(s)\n", len(result)) 185 | 186 | for i, p := range result { 187 | fmt.Printf("\toutput %d: [caplen: %d, len: %d, datalen: %d]\n", 188 | i, 189 | pkt.Metadata().CaptureLength, 190 | pkt.Metadata().Length, len(p.Data())) 191 | 192 | if err = w.WritePacket(pkt.Metadata().CaptureInfo, p.Data()); err != nil { 193 | fmt.Fprintf(os.Stderr, "error writing packet: %v", err) 194 | } 195 | outputCount++ 196 | } 197 | count++ 198 | } 199 | 200 | fmt.Printf("Summary: read %d packets, wrote %d packets\n", count, outputCount) 201 | 202 | return nil 203 | } 204 | -------------------------------------------------------------------------------- /s.txt: -------------------------------------------------------------------------------- 1 | [TCP:flags:PA]-fragment{tcp:-1:True}-| \/ 2 | -------------------------------------------------------------------------------- /saved_commands.json: -------------------------------------------------------------------------------- 1 | { "saved commands":[ 2 | { 3 | "name" : "base", 4 | "command" : "intercept", 5 | "args" : ["-strategyFile", "s.txt", "-interface", "Mullvad"] 6 | },{ 7 | "name" : "ethernet_interface", 8 | "command" : "intercept", 9 | "args" : ["-strategyFile", "s.txt", "-interface", "Ethernet"] 10 | },{ 11 | "name" : "another", 12 | "command" : "run-pcap", 13 | "args" : ["strategyFile", "s.txt", "output", "output.pcap"] 14 | } 15 | ] 16 | } 17 | -------------------------------------------------------------------------------- /validate.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "fmt" 5 | 6 | "github.com/getlantern/geneva" 7 | "github.com/urfave/cli/v2" 8 | ) 9 | 10 | func init() { 11 | app.Commands = append(app.Commands, 12 | &cli.Command{ 13 | Name: "validate", 14 | Usage: "validate that a strategy is well-formed", 15 | Action: func(c *cli.Context) error { 16 | return validate(c.Args().First()) 17 | }, 18 | }) 19 | } 20 | 21 | func validate(s string) error { 22 | strategy, err := geneva.NewStrategy(s) 23 | if err != nil { 24 | return cli.Exit(fmt.Sprintf("invalid strategy: %v\n", err), 1) 25 | } 26 | 27 | fmt.Println(strategy) 28 | 29 | return nil 30 | } 31 | --------------------------------------------------------------------------------