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GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
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func_renamer.py 0 → 100644
+ 155
− 0
View file @ 9ef40575
# Restore func names in stripped Golang binary
#@author Egor Zaytsev & QwErTy
#@category CERN.Golang
#@keybinding
#@menupath
#@toolbar
"""
Initial script for IDA by Egor Zaytsev
https://gitlab.com/zaytsevgu/goutils
ported to GHIDRA by QwErTy (QwErTyReverse on Telegram)
GNU General Public License v3.0
https://github.com/ghidraninja/ghidra_scripts/
"""
from ghidra.program.model.symbol.SourceType import *
import string
import random
addressFactory = currentProgram.getAddressFactory()
functionManager = currentProgram.getFunctionManager()
dataTypeManager = currentProgram.getDataTypeManager()
listing = currentProgram.getListing()
memory = currentProgram.getMemory()
DWORD = dataTypeManager.getDataType("/dword")
QWORD = dataTypeManager.getDataType("/qword")
CSTRING = dataTypeManager.getDataType("/TerminatedCString")
class bitZ(object):
def __init__(self, ptr, size, maker):
self.ptr = ptr
self.size = size
self.maker = maker
def addressToInt(ghidra_addr):
return int(ghidra_addr.toString(), 16)
def intToAddress(addr):
return addressFactory.getAddress(hex(addr))
def MakeDword(addr):
addr = intToAddress(addr)
listing.clearCodeUnits(addr, addr, False)
listing.createData(addr, DWORD)
return int(listing.getDataAt(addr).value.toString(), 16)
def MakeQword(addr):
addr = intToAddress(addr)
listing.clearCodeUnits(addr, addr, False)
listing.createData(addr, QWORD)
return int(listing.getDataAt(addr).value.toString(), 16)
def MakeString(addr):
addr = intToAddress(addr)
listing.clearCodeUnits(addr, addr, False)
listing.createData(addr, CSTRING)
return listing.getDataAt(addr).value
bits32 = bitZ(MakeDword, 4, MakeDword)
bits64 = bitZ(MakeDword, 8, MakeQword)
def get_bitness():
ptr = bits32
if currentProgram.defaultPointerSize == 8:
ptr = bits64
return ptr
def process_segment(handler, name=".gopclntab"):
segments = memory.getBlocks()
position = 0
for i in segments:
if i.getName() == name:
position = i
break
if position == 0:
GoRenameSectionless()
# raise Exception("Couldn't find segment")
else:
h = handler(addressToInt(position.getStart()), get_bitness())
def go_renamer(beg, ptr):
base = beg
pos = beg + 8 #skip header
size = ptr.ptr(pos)
pos += ptr.size
end = pos + (size * ptr.size * 2)
print "%x" % end
while pos < end:
offset = ptr.ptr(pos + ptr.size)
ptr.maker(pos)
ptr.maker(pos+ptr.size)
pos += ptr.size * 2
ptr.maker(base+offset)
func_addr = ptr.ptr(base+offset)
name_offset = MakeDword(base+offset+ptr.size)
name = MakeString(base + name_offset)
name += "_" + hex(func_addr)[2:].upper()
name = name.replace('.','_').replace("<-",'_chan_left_').replace('*','_ptr_').replace('-','_').replace(';','').replace('"','').replace('\\','')
name = name.replace('(','').replace(')','').replace('/','_').replace(' ','_').replace(',','comma').replace('{','').replace('}','')
func = functionManager.getFunctionAt(intToAddress(func_addr))
if func != None:
old_name = func.getName()
func.setName(name, USER_DEFINED)
print "%s renamed as %s" % (old_name, name)
else:
func = createFunction(intToAddress(func_addr), name)
print "Created function %s" % name
def tryLocateGopcltab():
addr = getFirstFunction().getBody().getMinAddress() # Get some valid address in .text segment. Returns ghidra address
while True:
possible_loc = memory.findBytes(addr, b"\xFB\xFF\xFF\xFF\x00\x00", b"\xFF\xFF\xFF\xFF\xFF\xFF", True, monitor) #header of gopclntab
if possible_loc == None:
return None
if check_is_gopclntab(addressToInt(possible_loc)):
return possible_loc
addr = possible_loc+1
return None
def check_is_gopclntab(addr):
ptr = get_bitness()
first_entry = ptr.ptr(addr+8+ptr.size)
first_entry_off = ptr.ptr(addr+8+ptr.size*2)
addr_func = addr+first_entry_off
func_loc = ptr.ptr(addr_func)
if func_loc == first_entry:
return True
return False
def GoRename():
process_segment(go_renamer)
def GoRenameSectionless():
addr = tryLocateGopcltab()
if addr is not None:
addr = addressToInt(addr)
print "Possible Gopclnab found at: %x" % addr
go_renamer(addr, get_bitness())
else:
print "Coulnd't find gopclntab. Is this a Go binary?"
GoRename()
\ No newline at end of file
string_bruteforce.py 0 → 100644
+ 60
− 0
View file @ 9ef40575
# Build strings in Golang binary
#@author Vincent Brillault, Nikolaos Filippakis
#@category CERN.Golang
#@keybinding
#@menupath
#@toolbar
from ghidra.program.model.symbol.SourceType import *
import sys
import string
memory = currentProgram.getMemory()
referenceManager = currentProgram.getReferenceManager()
dataTypeManager = currentProgram.getDataTypeManager()
listing = currentProgram.getListing()
STRING = dataTypeManager.getDataType("/string")
def get_segment(name):
segments = memory.getBlocks()
for seg in segments:
if seg.getName() == name:
return seg
print "Segment %s not found" % name
sys.exit(-1)
def get_reference_ranges(segment):
start = segment.getStart()
end = segment.getEnd()
pos = start.next()
while pos < end:
if referenceManager.getReferenceCountTo(pos) > 0:
yield (start, pos.previous())
start = pos
pos = pos.next()
yield (start, end)
def range_printable(start, end):
while start <= end:
b = memory.getByte(start)
if not (b in range(256) and chr(b) in string.printable):
return False
start = start.next()
return True
def makeString(addr, addr_to):
listing.clearCodeUnits(addr, addr_to, False)
listing.createData(addr, STRING, addr_to.subtract(addr)+1)
return listing.getDataAt(addr).value
rodata = get_segment('.rodata')
for (start, end) in get_reference_ranges(rodata):
if range_printable(start, end):
value = makeString(start, end)
print('%s-%s: %s' % (start, end, value))
string_load.py 0 → 100644
+ 108
− 0
View file @ 9ef40575
# Build strings in Golang binary
#@author Vincent Brillault
#@category CERN.Golang
#@keybinding
#@menupath
#@toolbar
from ghidra.program.model.symbol.SourceType import *
from ghidra.program.model.scalar import Scalar
import sys
import string
addressFactory = currentProgram.getAddressFactory()
memory = currentProgram.getMemory()
referenceManager = currentProgram.getReferenceManager()
dataTypeManager = currentProgram.getDataTypeManager()
listing = currentProgram.getListing()
STRING = dataTypeManager.getDataType("/string")
def get_segment(name):
segments = memory.getBlocks()
for seg in segments:
if seg.getName() == name:
return seg
print "Segment %s not found" % name
sys.exit(-1)
def range_printable(start, end):
while start <= end:
b = memory.getByte(start)
if not (b in range(256) and chr(b) in string.printable):
return False
start = start.next()
return True
def makeString(start, length, clean_end):
listing.clearCodeUnits(start, clean_end, False)
listing.createData(start, STRING, length)
return listing.getDataAt(start).value
rodata = get_segment('.rodata')
def check_string_load(lea, mov_str, mov_size):
if lea.getMnemonicString() != 'LEA':
return (None, None)
if mov_str.getMnemonicString() != 'MOV':
return (None, None)
if mov_size.getMnemonicString() != 'MOV':
return (None, None)
if lea.getOpObjects(0) != mov_str.getOpObjects(1):
return (None, None)
lea_src = lea.getOpObjects(1)
if not isinstance(lea_src[0], Scalar):
return (None, None)
lea_addr = addressFactory.getAddress(lea_src[0].toString())
if lea_addr is None or not rodata.contains(lea_addr):
return (None, None)
mov_str_dst = mov_str.getOpObjects(0)
mov_size_dst = mov_size.getOpObjects(0)
if mov_str_dst[0] != mov_size_dst[0]:
return (None, None)
if len(mov_size_dst) < 2:
return (None, None)
mov_size_dst_offset = mov_size_dst[1].getSignedValue()
mov_size_src = mov_size.getOpObjects(1)
if len(mov_str_dst) < 2:
if mov_size_dst_offset != 8:
return (None, None)
else:
mov_str_dst_offset = mov_str_dst[1].getSignedValue()
if mov_size_dst_offset - mov_str_dst_offset != 8:
return (None, None)
size = mov_size.getOpObjects(1)
if not isinstance(size[0], Scalar):
return (None, None)
return (lea_addr, size[0].getUnsignedValue())
def check_string(start, length):
end = start.add(length)
if not range_printable(start, end):
return
data = listing.getDataAt(start)
datatype = data.getDataType().getName()
if datatype != 'string':
newStr = makeString(start, length, end)
print("Found string not seen before at %s of len %s: %s" % (start, length, newStr))
return
data_len = data.getLength()
if data_len > length:
newStr = makeString(start, length, start.add(data_len))
print("Founds string of wrong length at %s: exisiting %d, real %d: %s" % (start, data_len, length, newStr))
elif data_len < length:
newStr = makeString(start, length, end)
print("Founds string of wrong length at %s: exisiting %d, real %d: %s" % (start, data_len, length, newStr))
codeIterator = listing.getCodeUnits(True)
opsa = None
opsb = codeIterator.next()
opsc = codeIterator.next()
while codeIterator.hasNext():
opsa, opsb, opsc = opsb, opsc, codeIterator.next()
(start, length) = check_string_load(opsa, opsb, opsc)
if start != None and length > 0:
check_string(start, length)
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