feature: datareuse now supports multiple references -> fix change_ carriers

This commit is contained in:
Dobin Rutishauser
2024-06-22 12:59:21 +02:00
parent ae3567847c
commit de77f50f06
7 changed files with 156 additions and 191 deletions
+30
View File
@@ -246,6 +246,17 @@ class SuperPe():
# Reloc destination is probably 8 bytes
# But i add another 8 to skip over small holes (common in .rdata)
rm.add_range(reloc.rva, reloc.rva + 8 + 8)
if True: # FIXME this is a hack which is sometimes necessary?
sect_data_copy = section.pefile_section.get_data()
string_off = find_first_utf16_string_offset(sect_data_copy)
if string_off == None:
raise Exception("Strings not found in .rdata section, abort")
if string_off < 128:
logging.debug("weird: Strings in .rdata section at offset {} < 100".format(string_off))
string_off = 128
rm.add_range(section.virt_addr, section.virt_addr + string_off)
rm.merge_overlaps()
return rm
@@ -378,3 +389,22 @@ class SuperPe():
self.pe.OPTIONAL_HEADER.DATA_DIRECTORY[SuperPe.IMAGE_DIRECTORY_ENTRY_SECURITY].VirtualAddress = 0
self.pe.OPTIONAL_HEADER.DATA_DIRECTORY[SuperPe.IMAGE_DIRECTORY_ENTRY_SECURITY].Size = 0
def find_first_utf16_string_offset(data, min_len=8):
current_string = bytearray()
start_offset = None # To keep track of the start of the current string
for i in range(0, len(data) - 1, 2):
# Check if we have a valid character
if data[i] != 0 or data[i+1] != 0:
if start_offset is None: # Mark the start of a new string
start_offset = i
current_string += bytes([data[i], data[i+1]])
else:
if len(current_string) >= min_len * 2: # Check if the current string meets the minimum length
return start_offset # Return the offset where the string starts
current_string = bytearray()
start_offset = None # Reset start offset for the next string
return None # No string found that meets the criteria