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refactor: fix a bug and cleanup

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This commit is contained in:
Dobin
2024-03-16 14:16:39 +00:00
parent 057f85e2bc
commit 2e491272c9
4 changed files with 18 additions and 6 deletions
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phases/injector.py
+8 -5
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@@ -112,7 +112,8 @@ def injected_fix_data(superpe: SuperPe, carrier: Carrier, exe_host: ExeHost):
raise Exception("No .rdata section found, abort")
rm = exe_host.get_rdata_relocmanager()
if False: # seems i dont need this, even tho i dont understand why
if True:
sect_data_copy = peSection.pefile_section.get_data()
string_off = find_first_utf16_string_offset(sect_data_copy)
if string_off == None:
@@ -126,7 +127,9 @@ def injected_fix_data(superpe: SuperPe, carrier: Carrier, exe_host: ExeHost):
# get a hole in the .rdata section to put our data
hole = rm.find_hole(len(datareuse_fixup.data))
if hole == None:
raise Exception("No hole found in .rdata section, abort")
raise Exception("No suitable hole with size {} found in .rdata section, abort".format(
len(datareuse_fixup.data)
))
fixup_offset_rdata = hole[0] # the start address of the hole (from start of .rdata)
rm.add_range(hole[0], hole[1]) # mark it as used
var_data = datareuse_fixup.data
@@ -141,14 +144,14 @@ def injected_fix_data(superpe: SuperPe, carrier: Carrier, exe_host: ExeHost):
code = superpe.get_code_section_data()
for datareuse_fixup in reusedata_fixups:
if not datareuse_fixup.randbytes in code:
raise Exception("DataResuse: ID {} not found, abort".format(
raise Exception("DataReuse: ID {} not found, abort".format(
datareuse_fixup.randbytes))
offset_from_datasection = code.index(datareuse_fixup.randbytes)
instruction_virtual_address = offset_from_datasection + exe_host.image_base + exe_host.code_section.VirtualAddress
destination_virtual_address = datareuse_fixup.addr
logger.info(" Replace {} at VA 0x{:X} with .rdata LEA at VA 0x{:X}".format(
datareuse_fixup.randbytes.hex(), instruction_virtual_address, destination_virtual_address
logger.info(" Replace {} at VA 0x{:X} with LEA {} .rdata 0x{:X}".format(
datareuse_fixup.randbytes.hex(), instruction_virtual_address, datareuse_fixup.register, destination_virtual_address
))
lea = assemble_lea(
instruction_virtual_address, destination_virtual_address, datareuse_fixup.register