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scanner.py
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scanner.py
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import re
import bisect
from sortedcontainers import SortedList
import traceback
import api
import util
import asyncio
def add_spaces(s):
return " ".join([s[i : i + 2] for i in range(0, len(s), 2)])
def index(a, x):
i = bisect.bisect_left(a, x)
if i != len(a) and a[i] == x:
return i
return -1
def NumbersWithinRange(items, lower, upper):
start = items.bisect(lower)
end = items.bisect_right(upper)
return items[start:end]
class Scanner:
scan_complete = True
progress = None
add_note = None
datatable = None
def __init__(self, frida_api, config):
self.frida_api = frida_api
self.frida = api.FRIDA(frida_api, config)
self.custom_read_memory = config["extended_function"]["custom_read_memory"]
self.addresses = []
self.address_list = []
self.rpm_max_size = 524288
self.scan_type = "int32"
self.scan_value = None
self.protect = "rw-"
self.start_address = 0
self.end_address = 0x7FFFFFFFFFFFFFFF
self.near_front = 0
self.near_back = 0
self.max_list_num = 10000
async def find(self, value, _type):
try:
self.progress.update("find start!")
await asyncio.sleep(0)
self.scan_complete = False
self.scan_value = value
self.scan_type = _type
self.addresses = []
self.address_list = []
regions = self.frida.virtualqueryexfull(self.protect)
tmp_regions = []
self.datatable.clear()
for region in regions:
start_address = max(region[0], self.start_address)
end_address = min(region[0] + region[1], self.end_address)
if start_address < end_address:
size = end_address - start_address + 1
tmp_regions.append([start_address, size])
regions = tmp_regions
regions_size = sum([region[1] for region in regions])
readed_size = 0
for i, region in enumerate(regions):
await asyncio.sleep(0)
start = region[0]
size = region[1]
tmp = start
remain_size = size
ret = b""
if _type == "regex":
while remain_size > 0:
read_size = min(remain_size, self.rpm_max_size)
result = self.frida.readprocessmemory(tmp, read_size)
if result:
ret = result
if _type != "regex":
sp = util.StructPack(value, _type)
bytecode = sp.pack()
bytecode = re.escape(bytecode)
elif _type == "regex":
bytecode = value.encode()
for match in re.finditer(bytecode, ret):
self.addresses.append(tmp + match.start())
self.address_list.append(
{
"address": tmp + match.start(),
"size": len(match.group(0)),
"value": match.group(0).decode(),
}
)
tmp += read_size
readed_size += read_size
remain_size -= read_size
self.progress.update(f"{int(readed_size/regions_size*100)}%")
else:
if _type == "aob":
bytecode = add_spaces(value.replace(" ", ""))
else:
sp = util.StructPack(value, _type)
bytecode = sp.pack().hex()
addresses = self.frida.memoryscan(start, size, bytecode)
if addresses is not None:
for address in addresses:
ad = int(address["address"], 16)
sz = address["size"]
self.addresses.append(ad)
self.address_list.append(
{"address": ad, "size": sz, "value": value}
)
readed_size += size
self.progress.update(f"{int(readed_size/regions_size*100)}%")
for i, address in enumerate(self.address_list):
if i >= self.max_list_num:
break
self.datatable.add_row(
*[i + 1, hex(address["address"]), address["value"]]
)
self.progress.update(f"complete => founds:{len(self.addresses)}")
self.scan_complete = True
except Exception:
self.scan_complete = True
self.progress.update("an error occured")
self.datatable.clear()
self.add_note(traceback.format_exc())
async def filter(self, value):
try:
if self.near_back != 0 or self.near_front != 0:
self.progress.update("nearby start!")
else:
self.progress.update("filter start!")
await asyncio.sleep(0.05)
self.scan_complete = False
_type = self.scan_type
filterd_list = []
filterd_addresses = []
regions = self.frida.virtualqueryexfull(self.protect)
tmp_regions = []
self.datatable.clear()
for region in regions:
start_address = max(region[0], self.start_address)
end_address = min(region[0] + region[1], self.end_address)
if start_address < end_address:
size = end_address - start_address + 1
tmp_regions.append([start_address, size])
regions = tmp_regions
regions_size = sum([region[1] for region in regions])
readed_size = 0
# nearby search
if self.near_back != 0 or self.near_front != 0:
self.addresses = list(
set(
[
x + n
for x in self.addresses
for n in range(-1 * self.near_back, self.near_front + 1)
]
)
)
for i, region in enumerate(regions):
await asyncio.sleep(0)
start = region[0]
size = region[1]
tmp = start
remain_size = size
ret = b""
data = SortedList(self.addresses)
addresses_in_region = NumbersWithinRange(data, start, start + size)
if len(addresses_in_region) > 0:
if _type == "regex":
while remain_size > 0:
read_size = min(remain_size, self.rpm_max_size)
result = self.frida.readprocessmemory(tmp, read_size)
if result:
ret = result
if _type != "regex":
sp = util.StructPack(value, _type, self.arch)
bytecode = sp.pack()
bytecode = re.escape(bytecode)
elif _type == "regex":
bytecode = value.encode()
for match in re.finditer(bytecode, ret):
address = tmp + match.start()
if index(addresses_in_region, address) != -1:
filterd_list.append(
{
"address": address,
"size": len(match.group(0)),
"value": match.group(0).decode(),
}
)
filterd_addresses.append(address)
tmp += read_size
readed_size += read_size
remain_size -= read_size
self.progress.update(
f"{int(readed_size/regions_size*100)}%"
)
else:
if _type == "aob":
bytecode = add_spaces(value.replace(" ", ""))
bytecode_size = int((len(bytecode) + 1) / 3)
else:
sp = util.StructPack(value, _type)
bytecode = sp.pack().hex().zfill(sp.size() * 2)
bytecode_size = int(len(bytecode) / 2)
if len(addresses_in_region) < 1000000:
address_infos = [
[x, bytecode_size, bytecode]
for x in addresses_in_region
]
addresses = self.frida.memoryfilter(address_infos)
else:
addresses = self.frida.memoryscan(start, size, bytecode)
if addresses is not None:
r = [
{
"address": int(x["address"], 16),
"size": x["size"],
"value": value,
}
for x in addresses
if index(addresses_in_region, int(x["address"], 16))
!= -1
]
if len(r) > 0:
filterd_list.extend(r)
filterd_addresses.extend([x["address"] for x in r])
readed_size += size
self.progress.update(f"{int(readed_size/regions_size*100)}%")
else:
readed_size += size
self.progress.update(f"{int(readed_size/regions_size*100)}%")
self.address_list = filterd_list
self.addresses = filterd_addresses
for i, address in enumerate(self.address_list):
if i >= self.max_list_num:
break
self.datatable.add_row(
*[i + 1, hex(address["address"]), address["value"]]
)
self.progress.update(f"complete => founds:{len(self.addresses)}")
self.scan_complete = True
except Exception:
self.scan_complete = True
self.progress.update("an error occured")
self.datatable.clear()
self.add_note(traceback.format_exc())
class MSScanner(Scanner):
def __init__(self, frida_api, config, scan_id):
super().__init__(frida_api, config)
self.custom_read_memory = config["extended_function"]["custom_read_memory"]
self.base_url = config["ipconfig"]["memory_server_ip"]
self.memory_server = api.MEMORY_SERVER(frida_api, config)
self.scan_id = scan_id
async def find(self, value, _type):
try:
self.progress.update("find start!")
await asyncio.sleep(0.05)
self.scan_complete = False
self.scan_value = value
self.scan_type = _type
self.addresses = []
self.address_list = []
regions = self.frida.virtualqueryexfull(self.protect)
address_ranges = []
self.datatable.clear()
for region in regions:
start_address = max(region[0], self.start_address)
end_address = min(region[0] + region[1], self.end_address)
if start_address < end_address:
address_ranges.append([start_address, end_address])
if _type == "aob":
bytecode = value.replace(" ", "")
elif _type == "regex":
bytecode = value
else:
sp = util.StructPack(value, _type)
bytecode = sp.pack().hex()
result = self.memory_server.memoryscan(
bytecode, address_ranges, self.scan_type, self.scan_id, True
)
if result:
for r in result["matched_addresses"]:
ad = r["address"]
if _type == "regex":
v = bytes.fromhex(r["value"]).decode()
sz = len(v)
else:
sz = int(len(r["value"]) / 2)
byte_data = bytes.fromhex(r["value"])
v = util.StructUnpack(byte_data, _type).unpack()
self.addresses.append(ad)
self.address_list.append({"address": ad, "size": sz, "value": v})
else:
pass
for i, address in enumerate(self.address_list):
if i >= self.max_list_num:
break
self.datatable.add_row(
*[i + 1, hex(address["address"]), address["value"]]
)
self.progress.update(f"complete => founds:{len(self.addresses)}")
self.scan_complete = True
except Exception:
self.scan_complete = True
self.progress.update("an error occured")
self.datatable.clear()
self.add_note(traceback.format_exc())
async def filter(self, value, filter_method):
try:
if self.near_back != 0 or self.near_front != 0:
await super().filter(value)
return
else:
self.progress.update("filter start!")
await asyncio.sleep(0.05)
self.datatable.clear()
self.addresses = []
self.address_list = []
if self.scan_type == "aob":
bytecode = value.replace(" ", "")
elif self.scan_type == "regex":
bytecode = value
else:
sp = util.StructPack(value, self.scan_type)
bytecode = sp.pack().hex()
result = self.memory_server.memoryfilter(
bytecode, self.scan_type, self.scan_id, filter_method, True
)
if result:
for r in result["matched_addresses"]:
ad = r["address"]
if self.scan_type == "regex":
v = bytes.fromhex(r["value"]).decode()
sz = len(v)
else:
sz = int(len(r["value"]) / 2)
byte_data = bytes.fromhex(r["value"])
v = util.StructUnpack(byte_data, self.scan_type).unpack()
self.addresses.append(ad)
self.address_list.append({"address": ad, "size": sz, "value": v})
else:
pass
for i, address in enumerate(self.address_list):
if i >= self.max_list_num:
break
self.datatable.add_row(
*[i + 1, hex(address["address"]), address["value"]]
)
self.progress.update(f"complete => founds:{len(self.addresses)}")
self.scan_complete = True
except Exception:
self.scan_complete = True
self.progress.update("an error occured")
self.datatable.clear()
self.add_note(traceback.format_exc())