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fix: data injection

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Dobin
2024-07-08 07:56:40 +01:00
parent d1f082f6f3
commit fa588beb55
1 changed files with 9 additions and 10 deletions
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phases/injector.py
+9 -10
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@@ -39,6 +39,9 @@ class Injector():
# to find space for carrier and payload
# for some combination of settings HACK
self.rdata_manager = self.superpe.get_rdata_rangemanager()
self.code_manager = self.superpe.get_code_rangemanager()
self.payload_rva = None
self.carrier_rva = None
self.init_addresses()
@@ -57,8 +60,7 @@ class Injector():
# carrier location
complete_size = len(self.carrier_shc) + 4096 + len(self.payload.payload_data)
rm = self.superpe.get_code_rangemanager()
largest_gap = rm.find_holes(complete_size)
largest_gap = self.code_manager.find_holes(complete_size)
if len(largest_gap) == 0:
raise Exception('No hole found in code section to fit payload!')
largest_gap_size = largest_gap[0][1] - largest_gap[0][0]
@@ -82,9 +84,8 @@ class Injector():
# └─────────┴─────────┴───────┘ └────────┴─────────┴───────┘
# carrier location
rm = self.superpe.get_code_rangemanager()
complete_size = len(self.carrier_shc)
largest_gap = rm.find_holes(complete_size)
largest_gap = self.code_manager.find_holes(complete_size)
if len(largest_gap) == 0:
raise Exception('No hole found in code section to fit payload!')
largest_gap_size = largest_gap[0][1] - largest_gap[0][0]
@@ -93,15 +94,14 @@ class Injector():
self.carrier_rva = self.superpe.get_code_section().VirtualAddress + offset
# payload location
rdata_rm = self.superpe.get_rdata_rangemanager()
complete_size = len(self.payload.payload_data)
largest_gap = rdata_rm.find_holes(complete_size)
largest_gap = self.rdata_manager.find_holes(complete_size)
if len(largest_gap) == 0:
raise Exception('No hole found in code section to fit payload!')
largest_gap_size = largest_gap[0][1] - largest_gap[0][0]
offset = largest_gap[0][0]
self.payload_rva = self.superpe.get_section_by_name(".rdata").virt_addr + offset
self.rdata_manager.add_range(offset, offset+len(self.payload.payload_data))
## Inject
@@ -269,14 +269,13 @@ class Injector():
datareuse_fixup.addr, payload_rva, datareuse_fixup.string_ref, len(datareuse_fixup.data)))
else: # .rdata
rdata_manager = self.superpe.get_rdata_rangemanager()
# get a hole in the .rdata section to put our data
hole_rva = rdata_manager.find_hole(len(datareuse_fixup.data))
hole_rva = self.rdata_manager.find_hole(len(datareuse_fixup.data))
if hole_rva == None:
raise Exception("No suitable hole with size {} found in .rdata section, abort".format(
len(datareuse_fixup.data)
))
rdata_manager.add_range(hole_rva[0], hole_rva[1]+1) # mark it as used
self.rdata_manager.add_range(hole_rva[0], hole_rva[1]+1) # mark it as used
var_data = datareuse_fixup.data
data_rva = hole_rva[0]