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commit
3cbc18db86
38
README.md
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38
README.md
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# fSSH
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fSSH is a program to crack ssh private keys passwords using a dictionary.
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Use it only as educational purpose.
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# Installation
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```sh
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git clone https://code.lacashita.com/sml/fssh
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./fssh
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```
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If you prefer, you can compile the code:
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```sh
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git clone https://code.lacashita.com/sml/fssh
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go build fssh.go
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./fssh
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```
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# Usage
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To crack a key:
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```sh
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fssh -w rockyou.txt -k id_rsa
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```
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To crack a key using 5 concurrent processes:
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```sh
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fssh -w rockyou.txt -k id_rsa -c 5
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```
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To crack a key in verbose mode:
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```sh
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fssh -w rockyou.txt -k id_rsa -v
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```
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# Notes
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This program has been built to play with Go language.
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130
fssh.go
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130
fssh.go
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/*
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Description: Tool to crack private ssh keys using a dictionary.
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Auth0r: sml@lacashita.com
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Use it only as educational purpose.
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*/
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package main
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import (
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"bufio"
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"flag"
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"fmt"
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"io/ioutil"
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"os"
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"sync"
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"golang.org/x/crypto/ssh"
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)
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func prepareWordlist(jobs chan string, wordlist *string) {
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file, _ := os.Open(*wordlist)
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scanner := bufio.NewScanner(file)
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for scanner.Scan() {
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jobs <- scanner.Text()
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}
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close(jobs)
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}
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func crackKey(jobs chan string, wg *sync.WaitGroup, b []byte, verbo *bool) ssh.AuthMethod {
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defer wg.Done()
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var key ssh.Signer
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var err error
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for {
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pazz, ok := <-jobs
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if !ok {
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break
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} else {
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key, err = ssh.ParsePrivateKeyWithPassphrase(b, []byte(pazz))
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if err != nil {
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if *verbo == true {
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fmt.Printf("Trying %v\n", pazz)
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}
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} else {
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fmt.Printf("[+] Valid key Found: %v\n", pazz)
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os.Exit(0)
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}
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}
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}
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return ssh.PublicKeys(key)
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}
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func checkKey(keyfile *string) {
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var file string
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file = *keyfile
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_, err := os.Stat(file)
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if err != nil {
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fmt.Println("Key doesnt exist")
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os.Exit(1)
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}
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}
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func checkWordlist(keyfile *string) {
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var file string
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file = *keyfile
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_, err := os.Stat(file)
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if err != nil {
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fmt.Println("Wordlist doesnt exist")
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os.Exit(1)
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}
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}
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func menu(options int) {
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if options < 5 {
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fmt.Println(`
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Parameters:
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-w Wordlist with passwords.
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-k SSH Key to crack.
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-c Number of concurrent processes.
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-v Verbose
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Examples of usage:
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fssh -w rockyou.txt -k id_rsa
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Example with 5 concurrent processes:
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fssh -w rockyou.txt -k id_rsa -c 5
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`)
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os.Exit(1)
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}
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}
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func main() {
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var b []byte
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var wordlist string
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var keyfile string
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var verbo bool
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var concurrent int
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var wg sync.WaitGroup
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jobs := make(chan string)
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flag.StringVar(&wordlist, "w", "", "Like /usr/share/wordlists/rockyou.txt")
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flag.StringVar(&keyfile, "k", "", "Like ~/.ssh/id_rsa")
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flag.IntVar(&concurrent, "c", 3, "Concurrency, by default 3")
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flag.BoolVar(&verbo, "v", false , "Enable Verbose")
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flag.Parse()
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menu(len(os.Args))
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checkKey(&keyfile)
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checkWordlist(&wordlist)
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fmt.Printf(`
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__ _____ _____ _ _
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/ _/ ____/ ____| | | |
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| || (___| (___ | |__| |
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| _\___ \\___ \| __ |
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| | ____) |___) | | | |
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|_||_____/_____/|_| |_|
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===========================
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[-] Cracking the key.... Wait.
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`)
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b, _ = ioutil.ReadFile(keyfile)
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go prepareWordlist(jobs, &wordlist)
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for i := 0; i < concurrent; i++ {
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go crackKey(jobs, &wg, b, &verbo)
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wg.Add(1)
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}
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wg.Wait()
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fmt.Printf("[x] Password not found :_(\n")
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}
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13
go.mod
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13
go.mod
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module github.com/melbahja/goph
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go 1.17
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require (
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github.com/mattn/go-runewidth v0.0.13 // indirect
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github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db // indirect
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github.com/rivo/uniseg v0.2.0 // indirect
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github.com/schollz/progressbar/v3 v3.8.6 // indirect
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golang.org/x/crypto v0.0.0-20220518034528-6f7dac969898 // indirect
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golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a // indirect
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golang.org/x/term v0.0.0-20220411215600-e5f449aeb171 // indirect
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)
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33
go.sum
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33
go.sum
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github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/k0kubun/go-ansi v0.0.0-20180517002512-3bf9e2903213/go.mod h1:vNUNkEQ1e29fT/6vq2aBdFsgNPmy8qMdSay1npru+Sw=
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github.com/mattn/go-isatty v0.0.14/go.mod h1:7GGIvUiUoEMVVmxf/4nioHXj79iQHKdU27kJ6hsGG94=
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github.com/mattn/go-runewidth v0.0.13 h1:lTGmDsbAYt5DmK6OnoV7EuIF1wEIFAcxld6ypU4OSgU=
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github.com/mattn/go-runewidth v0.0.13/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
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github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db h1:62I3jR2EmQ4l5rM/4FEfDWcRD+abF5XlKShorW5LRoQ=
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github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db/go.mod h1:l0dey0ia/Uv7NcFFVbCLtqEBQbrT4OCwCSKTEv6enCw=
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github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
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github.com/rivo/uniseg v0.2.0 h1:S1pD9weZBuJdFmowNwbpi7BJ8TNftyUImj/0WQi72jY=
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github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
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github.com/schollz/progressbar/v3 v3.8.6 h1:QruMUdzZ1TbEP++S1m73OqRJk20ON11m6Wqv4EoGg8c=
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github.com/schollz/progressbar/v3 v3.8.6/go.mod h1:W5IEwbJecncFGBvuEh4A7HT1nZZ6WNIL2i3qbnI0WKY=
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github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
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github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
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golang.org/x/crypto v0.0.0-20220131195533-30dcbda58838/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
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golang.org/x/crypto v0.0.0-20220518034528-6f7dac969898 h1:SLP7Q4Di66FONjDJbCYrCRrh97focO6sLogHO7/g8F0=
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golang.org/x/crypto v0.0.0-20220518034528-6f7dac969898/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
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golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
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golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1 h1:SrN+KX8Art/Sf4HNj6Zcz06G7VEz+7w9tdXTPOZ7+l4=
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golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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golang.org/x/sys v0.0.0-20220128215802-99c3d69c2c27/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a h1:dGzPydgVsqGcTRVwiLJ1jVbufYwmzD3LfVPLKsKg+0k=
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golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
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golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
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golang.org/x/term v0.0.0-20220411215600-e5f449aeb171 h1:EH1Deb8WZJ0xc0WK//leUHXcX9aLE5SymusoTmMZye8=
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golang.org/x/term v0.0.0-20220411215600-e5f449aeb171/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
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golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
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golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
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