def _searchOpcode(self, opcode):
r = Ropper()
gadgets = []
for section in self._binaries[0].executableSections:
vaddr = section.virtualAddress
gadgets.extend(r.searchOpcode(self._binaries[0],opcode=opcode,disass=True))
if len(gadgets) > 0:
return gadgets[0]
else:
raise RopChainError('Cannot create gadget for opcode: %s' % opcode)
def _searchOpcode(self, opcode):
r = Ropper()
gadgets = []
for section in self._binaries[0].executableSections:
vaddr = section.virtualAddress
gadgets.extend(r.searchOpcode(self._binaries[0],opcode=opcode,disass=True))
if len(gadgets) > 0:
return gadgets[0]
else:
raise RopChainError('Cannot create gadget for opcode: %x' % opcode)
def _searchOpcode(self, opcode):
r = Ropper()
gadgets = []
for binary in self._binaries:
for section in binary.executableSections:
vaddr = section.virtualAddress
gadgets.extend(r.searchOpcode(binary,opcode=opcode,disass=True))
if len(gadgets) > 0:
self._usedBinaries.append((gadgets[0].fileName, gadgets[0]._section))
return gadgets[0]
else:
raise RopChainError('Cannot create gadget for opcode: %s' % opcode)
def _searchOpcode(self, opcode):
r = Ropper()
gadgets = []
for binary in self._binaries:
for section in binary.executableSections:
vaddr = section.virtualAddress
gadgets.extend(
r.searchOpcode(binary, opcode=opcode, disass=True))
if len(gadgets) > 0:
self._usedBinaries.append(
(gadgets[0].fileName, gadgets[0]._section))
return gadgets[0]
else:
raise RopChainError('Cannot create gadget for opcode: %s' % opcode)
def _searchOpcode(self, opcode):
r = Ropper()
gadgets = []
for binary in self._binaries:
for section in binary.executableSections:
vaddr = section.virtualAddress
gadgets.extend(r.searchOpcode(binary,opcode=opcode,disass=True))
if len(gadgets) > 0:
for gadget in gadgets:
if not gadget:
continue
if not self.containsBadbytes(gadget.IMAGE_BASES.get(gadget.fileName,0) + gadget.lines[0][0]):
self._updateUsedBinaries(gadget)
return gadget
else:
raise RopChainError('Cannot create gadget for opcode: %s' % opcode)
def _searchOpcode(self, opcode):
r = Ropper()
gadgets = []
for binary in self._binaries:
for section in binary.executableSections:
vaddr = section.virtualAddress
gadgets.extend(r.searchOpcode(binary,opcode=opcode,disass=True))
if len(gadgets) > 0:
for gadget in gadgets:
if not gadget:
continue
if not self.containsBadbytes(gadget.IMAGE_BASES.get(gadget.fileName,0) + gadget.lines[0][0]):
self._updateUsedBinaries(gadget)
return gadget
else:
raise RopChainError('Cannot create gadget for opcode: %s' % opcode)
def test_opcode_failures(self):
r = Ropper()
if version_info.major == 3 and version_info.minor >= 2:
# Wrong question mark position
with self.assertRaisesRegex(
RopperError,
'A \? for the highest 4 bit of a byte is not supported.*'):
r.searchOpcode(self.file, 'ff?4')
# Wrong lengh
with self.assertRaisesRegex(
RopperError,
'The length of the opcode has to be a multiple of two'):
r.searchOpcode(self.file, 'ff4')
# Unallowed character
with self.assertRaisesRegex(RopperError,
'Invalid characters in opcode string'):
r.searchOpcode(self.file, 'ff4r')
else:
# Wrong question mark position
with self.assertRaisesRegexp(
RopperError,
'A \? for the highest 4 bit of a byte is not supported.*'):
r.searchOpcode(self.file, 'ff?4')
# Wrong lengh
with self.assertRaisesRegexp(
RopperError,
'The length of the opcode has to be a multiple of two'):
r.searchOpcode(self.file, 'ff4')
# Unallowed character
with self.assertRaisesRegexp(
RopperError, 'Invalid characters in opcode string'):
r.searchOpcode(self.file, 'ff4r')
def __searchOpcode(self, opcode):
r = Ropper(self.__cprinter)
gadgets = r.searchOpcode(self.binary,opcode)
self.__printGadgets(gadgets, header='Opcode')
def __searchOpcode(self, opcode):
r = Ropper(self.__searchGadgetCallback)
gadgets = r.searchOpcode(self.binary,opcode)
self.__printGadgets(gadgets, header='Opcode')
class RopperService(object):
ROPPER_FOLDER = os.path.expanduser('~') + os.path.sep + ".ropper/"
CACHE_FOLDER = os.path.expanduser('~') + os.path.sep + ".ropper/cache/"
CACHE_FILE_COUNT = 16
def __init__(self, options={}, callbacks=None):
super(RopperService, self).__init__()
self.__options = Options(options, self.__optionChanged)
if callbacks and hasattr(callbacks, '__gadgetSearchProgress__'):
self.__ropper = Ropper(callback=callbacks.__gadgetSearchProgress__)
else:
self.__ropper = Ropper()
self.__files = []
self.__callbacks = callbacks
if self.__options.color:
cstr.COLOR = self.__options.color
Gadget.DETAILED = self.__options.detailed
@property
def ropper(self):
return self.__ropper
@property
def options(self):
return self.__options
@property
def files(self):
return list(self.__files)
def __optionChanged(self, option, oldvalue, newvalue):
if hasattr(self, '_%s_changed' % option):
func = getattr(self, '_%s_changed' % option)
func(newvalue)
def __prepareGadgets(self, file, gadgets, type=None):
gadgets = self.__filterBadBytes(gadgets)
gadgets = self.__filterCfg(file, gadgets, type)
if not self.__options.all:
callback = None
if self.__callbacks and hasattr(self.__callbacks, '__deleteDoubleGadgetsProgress__'):
callback = self.__callbacks.__deleteDoubleGadgetsProgress__
gadgets = deleteDuplicates(gadgets, callback)
return gadgets
def __filterBadBytes(self, gadgets):
if self.__options.badbytes:
callback = None
if self.__callbacks and hasattr(self.__callbacks, '__filterBadBytesGadgetsProgress__'):
callback = self.__callbacks.__filterBadBytesGadgetsProgress__
gadgets = filterBadBytes(gadgets, self.options.badbytes, callback)
return gadgets
def __filterCfg(self, file, gadgets, type):
if self.__options.cfg_only and type==Type.PE:
callback = None
if self.__callbacks and hasattr(self.__callbacks, '__filterCfgGadgetsProgress__'):
callback = self.__callbacks.__filterCfgGadgetsProgress__
gadgets = cfgFilterGadgets(file.loader, gadgets, callback)
return gadgets
def __getCacheFileName(self, file):
return "%s_%s_%d_%s_%d" % (file.loader.checksum, str(file.arch), self.options.inst_count,str(self.options.type), sys.version_info.major)
def __saveCache(self, file):
cache_file = None
try:
temp = RopperService.CACHE_FOLDER
if not os.path.exists(temp):
os.makedirs(temp)
cache_file = temp + os.path.sep + self.__getCacheFileName(file)
count = RopperService.CACHE_FILE_COUNT
if len(file.allGadgets) > 1000:
if os.path.exists(cache_file):
os.remove(cache_file)
length = len(file.allGadgets)
step = int(length / count)
for i in range(count-1):
gadgets = file.allGadgets[i*step: (i+1)*step]
with open(cache_file+'_%d' % (i+1),'wb') as f:
f.write(encode(repr(gadgets).encode('ascii'),'zip'))
gadgets = file.allGadgets[(count-1)*step:]
with open(cache_file+'_%d' % (count),'wb') as f:
f.write(encode(repr(gadgets).encode('ascii'),'zip'))
return
with open(cache_file,'wb') as f:
f.write(encode(repr(file.allGadgets).encode('ascii'),'zip'))
except BaseException as e:
print(e)
if cache_file:
for i in range(1, RopperService.CACHE_FILE_COUNT+1):
if os.path.exists(cache_file+'_%d' % i):
os.remove(cache_file+'_%d' % i)
def __loadCachePerProcess(self, fqueue, gqueue):
nan=0
while True:
cacheFileName = fqueue.get()
if cacheFileName is None:
fqueue.task_done()
break
if os.path.exists(cacheFileName):
with open(cacheFileName,'rb') as f:
data = f.read()
gqueue.put(eval(decode(data,'zip')))
else:
gqueue.put([])
fqueue.task_done()
def __loadCache(self, file):
mp = False
nan= 0
processes = []
single = False
cache_file = None
try:
temp = RopperService.CACHE_FOLDER
cache_file = temp + os.path.sep + self.__getCacheFileName(file)
if not os.path.exists(cache_file):
if not os.path.exists(cache_file+'_%d' % 1):
return
else:
mp = True and multiprocessing.cpu_count()>1
else:
single = True
if self.__callbacks and hasattr(self.__callbacks, '__message__'):
self.__callbacks.__message__('Load gadgets from cache')
if self.__callbacks and hasattr(self.__callbacks, '__gadgetSearchProgress__'):
self.__callbacks.__gadgetSearchProgress__(None, [], 0)
if not mp:
all_gadgets = []
if single:
with open(cache_file,'rb') as f:
data = f.read()
all_gadgets.extend(eval(decode(data,'zip')))
if self.__callbacks and hasattr(self.__callbacks, '__gadgetSearchProgress__'):
self.__callbacks.__gadgetSearchProgress__(None, all_gadgets, 1.0)
else:
for i in range(1,RopperService.CACHE_FILE_COUNT+1):
if os.path.exists(cache_file+'_%d' % i):
with open(cache_file+'_%d' % i,'rb') as f:
data = f.read()
all_gadgets.extend(eval(decode(data,'zip')))
if self.__callbacks and hasattr(self.__callbacks, '__gadgetSearchProgress__'):
self.__callbacks.__gadgetSearchProgress__(None, all_gadgets, float(i)/RopperService.CACHE_FILE_COUNT)
return all_gadgets
else:
count = min(multiprocessing.cpu_count(),RopperService.CACHE_FILE_COUNT)
gqueue = multiprocessing.Queue()
fqueue = multiprocessing.JoinableQueue()
for i in range(1,RopperService.CACHE_FILE_COUNT+1):
fqueue.put(cache_file+'_%d' % i)
all_gadgets = []
for i in range(count):
p=multiprocessing.Process(target=self.__loadCachePerProcess, args=(fqueue, gqueue))
p.start()
processes.append(p)
for i in range(count):
fqueue.put(None)
for i in range(RopperService.CACHE_FILE_COUNT):
gadgets = gqueue.get()
all_gadgets.extend(gadgets)
if self.__callbacks and hasattr(self.__callbacks, '__gadgetSearchProgress__'):
self.__callbacks.__gadgetSearchProgress__(None, all_gadgets, float(i+1)/RopperService.CACHE_FILE_COUNT)
return sorted(all_gadgets, key=Gadget.simpleInstructionString)
except KeyboardInterrupt:
if mp:
for p in processes:
if p and p.is_alive():
p.terminate()
except BaseException as e:
if mp:
for p in processes:
if p and p.is_alive():
p.terminate()
if cache_file:
for i in range(1,RopperService.CACHE_FILE_COUNT+1):
if os.path.exists(cache_file+'_%d' % i):
os.remove(cache_file+'_%d' % i)
def _badbytes_changed(self, value):
for f in self.__files:
if f.loaded:
f.gadgets = self.__prepareGadgets(f, f.allGadgets, f.type)
def _all_changed(self, value):
for f in self.__files:
if f.loaded:
f.gadgets = self.__prepareGadgets(f, f.allGadgets, f.type)
def _color_changed(self, value):
cstr.COLOR = value
def _detailed_changed(self, value):
Gadget.DETAILED = value
def _cfg_only_changed(self, value):
for f in self.__files:
if f.loaded and f.type == Type.PE:
f.gadgets = self.__prepareGadgets(f, f.allGadgets, f.type)
def _type_changed(self, value):
for f in self.__files:
if f.loaded:
self.loadGadgetsFor(f.name)
def _inst_count_changed(self, value):
for f in self.__files:
if f.loaded:
self.loadGadgetsFor(f.name)
def _getFileFor(self, name):
for file in self.__files:
if file.loader.fileName == name:
return file
return None
def clearCache(self):
temp = RopperService.CACHE_FOLDER
if os.path.exists(temp):
import shutil
shutil.rmtree(temp)
def getFileFor(self, name):
return self._getFileFor(name)
def addFile(self, name, bytes=None, arch=None, raw=False):
if self._getFileFor(name):
raise RopperError('file is already added: %s' % name)
if arch:
arch=getArchitecture(arch)
loader = Loader.open(name, bytes=bytes, raw=raw, arch=arch)
file = FileContainer(loader)
self.__files.append(file)
def removeFile(self, name):
for idx, fc in enumerate(self.__files):
if fc.loader.fileName == name:
del self.__files[idx]
def asm(self, code, arch='x86', format='hex'):
if format not in ('hex', 'string', 'raw'):
raise RopperError('Invalid format: %s\n Valid formats are: hex, string, raw' % format)
format = Format.HEX if format=='hex' else Format.STRING if format=='string' else Format.RAW
return self.ropper.assemble(code, arch=getArchitecture(arch), format=format)
def disasm(self, opcode, arch='x86'):
return self.ropper.disassemble(opcode, arch=getArchitecture(arch))
def searchPopPopRet(self, name=None):
to_return = {}
if not name:
for file in self.__files:
to_return[file.loader.fileName] = self.__ropper.searchPopPopRet(file.loader)
else:
fc = self._getFileFor(name)
if not fc:
raise RopperError('No such file opened: %s' % name)
to_return[name] = self.__ropper.searchPopPopRet(fc.loader)
return self.__filterBadBytes(to_return)
def searchJmpReg(self, regs=['esp'],name=None):
to_return = {}
if not name:
for file in self.__files:
to_return[file.loader.fileName] = self.__ropper.searchJmpReg(file.loader, regs)
else:
fc = self._getFileFor(name)
if not fc:
raise RopperError('No such file opened: %s' % name)
to_return[name] = self.__ropper.searchJmpReg(fc.loader, regs)
return self.__filterBadBytes(to_return)
def searchOpcode(self, opcode, name=None):
to_return = {}
if not name:
for file in self.__files:
to_return[file.loader.fileName] = self.__ropper.searchOpcode(file.loader, opcode)
else:
fc = self.getFileFor(name)
if not fc:
raise RopperError('No such file opened: %s' % name)
to_return[name] = self.__ropper.searchOpcode(fc.loader, opcode)
return self.__filterBadBytes(to_return)
def searchInstructions(self, code, name=None):
to_return = {}
if not name:
for file in self.__files:
to_return[file.loader.fileName] = self.__ropper.searchInstructions(file.loader, code)
else:
fc = self.getFileFor(name)
if not fc:
raise RopperError('No such file opened: %s' % name)
to_return[name] = self.__ropper.searchInstructions(fc.loader, code)
return self.__filterBadBytes(to_return)
def analyseGadgets(self, fileObject):
gadgets = fileObject.gadgets
analyser = Analyser()
cb = None
lg = len(gadgets)
if self.__callbacks and hasattr(self.__callbacks, '__analyseGadgetsProgress__'):
cb = self.__callbacks.__analyseGadgetsProgress__
for i,g in enumerate(gadgets):
g.info = analyser.analyse(g)
if cb:
cb(g, float(i)/lg)
if cb:
cb(None, 1.0)
self.__saveCache(fileObject)
fileObject.analysed = True
def loadGadgetsFor(self, name=None):
def load_gadgets(f):
gtype = None
cache = False
Gadget.IMAGE_BASES[f.loader.checksum] = f.loader.imageBase
if self.options.type == 'rop':
gtype = GadgetType.ROP
elif self.options.type == 'jop':
gtype = GadgetType.JOP
elif self.options.type == 'sys':
gtype = GadgetType.SYS
elif self.options.type == 'all':
gtype = GadgetType.ALL
f.allGadgets = self.__loadCache(f)
if f.allGadgets == None:
cache = True
f.allGadgets = self.__ropper.searchGadgets(f.loader, instructionCount=self.options.inst_count, gtype=gtype)
if cache:
self.__saveCache(f)
f.gadgets = self.__prepareGadgets(f, f.allGadgets, f.type)
f.analysed = f.gadgets[0].info is not None if len(f.gadgets) > 0 else False
#self._analyseGadgets(f.gadgets)
if name is None:
for fc in self.__files:
load_gadgets(fc)
else:
for fc in self.__files:
if fc.loader.fileName == name:
load_gadgets(fc)
def printGadgetsFor(self, name=None):
def print_gadgets(f):
print(f.loader.fileName)
for g in f.gadgets:
if self.options.detailed:
print(g)
else:
print(g.simpleString())
if name is None:
for f in self.__files:
print_gadgets(f)
else:
for f in self.__files:
if f.loader.fileName == name:
print_gadgets(f)
def searchString(self, string='', name=None):
def search(f, string):
data = []
if not string or string == '[ -~]{2}[ -~]*':
string = '[ -~]{2}[ -~]*'
else:
string = f.arch.searcher.prepareFilter(string)
sections = list(f.dataSections)
string = string.encode('ascii') # python 3 compatibility
for section in sections:
b = bytes(bytearray(section.bytes))
for match in re.finditer(string, b):
vaddr = f.imageBase + section.offset if f.imageBase != None else section.virtualAddress
data.append( (match.start() + vaddr , match.group()))
return data
to_return = {}
if not name:
for file in self.__files:
to_return[file.loader.fileName] = search(file.loader, string)
else:
fc = self._getFileFor(name)
if not fc:
raise RopperError('No such file opened: %s' % name)
to_return[name] = search(fc.loader, string)
return to_return
def search(self, search, quality=None, name=None):
if name:
fc = self._getFileFor(name)
if not fc:
raise RopperError('No such file opened: %s' % name)
s = fc.loader.arch.searcher
for gadget in s.search(fc.gadgets, search, quality):
yield(fc.name, gadget)
else:
for fc in self.__files:
s = fc.loader.arch.searcher
for gadget in s.search(fc.gadgets, search, quality):
yield(fc.name, gadget)
def semanticSearch(self, search, stableRegs=[], name=None):
count = 0
if name:
fc = self._getFileFor(name)
if not fc:
raise RopperError('No such file opened: %s' % name)
s = fc.loader.arch.searcher
for gadget in s.semanticSearch(fc.gadgets, search, self.options.inst_count, stableRegs):
if self.options.count_of_findings == 0 or self.options.count_of_findings > count:
yield(fc.name, gadget)
else:
break
count += 1
self.__saveCache(fc)
else:
for fc in self.__files:
s = fc.loader.arch.searcher
for gadget in s.semanticSearch(fc.gadgets, search, self.options.inst_count, stableRegs):
if self.options.count_of_findings == 0 or self.options.count_of_findings > count:
yield(fc.name, gadget)
else:
break
count += 1
self.__saveCache(fc)
def searchdict(self, search, quality=None, name=None):
to_return = {}
for file, gadget in self.search(search, quality, name):
l = to_return.get(file)
if not l:
l = []
to_return[file] = l
l.append(gadget)
return to_return
def disassAddress(self, name, address, length):
fc = self.getFileFor(name)
if not fc:
raise RopperError('No such file opened: %s' % name)
eSections = fc.loader.executableSections
for section in eSections:
if section.virtualAddress <= address and section.virtualAddress + section.size > address:
ropper = Ropper()
g = ropper.disassembleAddress(section, fc.loader, address, address - (fc.loader.imageBase+section.offset), length)
if not g:
raise RopperError('Cannot disassemble address: %s' % toHex(address))
if length < 0:
length = length * -1
return g.disassemblyString()
return ''
def createRopChain(self, chain, arch, options={}):
callback = None
if self.__callbacks and hasattr(self.__callbacks, '__ropchainMessages__'):
callback = self.__callbacks.__ropchainMessages__
b = []
gadgets = {}
for binary in self.__files:
if str(binary.arch) == arch:
gadgets[binary.loader] = binary.gadgets
b.append(binary.loader)
generator = RopChain.get(b, gadgets, chain, callback, unhexlify(self.options.badbytes))
if not generator:
raise RopperError('%s does not have support for %s chain generation at the moment. Its a future feature.' % (self.files[0].loader.arch.__class__.__name__, chain))
return generator.create(options)
def setImageBaseFor(self, name, imagebase):
file = self._getFileFor(name)
if not file:
raise RopperError('No such file opened: %s' % name)
file.loader.imageBase = imagebase
Gadget.IMAGE_BASES[file.loader.checksum] = file.loader.imageBase
if file.loaded and (self.options.badbytes or self.options.cfg_only and file.type == Type.PE):
file.gadgets = self.__prepareGadgets(file, file.allGadgets, file.type)
def setArchitectureFor(self, name, arch):
file = self.getFileFor(name)
if not file:
raise RopperError('No such file opened: %s' % name)
file.loader.arch = getArchitecture(arch)
if file.loaded:
self.loadGadgetsFor(name)
def _setGadgets(self, name, gadgets):
fc = self.getFileFor(name)
if not fc:
raise RopperError('No such file opened: %s' % name)
fc.allGadgets = gadgets
fc.gadgets = self.__prepareGadgets(fc, fc.allGadgets, fc.type)
class RopperService(object):
ROPPER_FOLDER = os.path.expanduser('~') + os.path.sep + ".ropper/"
CACHE_FOLDER = os.path.expanduser('~') + os.path.sep + ".ropper/cache/"
CACHE_FILE_COUNT = 16
def __init__(self, options={}, callbacks=None):
super(RopperService, self).__init__()
self.__options = Options(options, self.__optionChanged)
if callbacks and hasattr(callbacks, '__gadgetSearchProgress__'):
self.__ropper = Ropper(callback=callbacks.__gadgetSearchProgress__)
else:
self.__ropper = Ropper()
self.__files = []
self.__callbacks = callbacks
if self.__options.color:
cstr.COLOR = self.__options.color
Gadget.DETAILED = self.__options.detailed
@property
def ropper(self):
return self.__ropper
@property
def options(self):
return self.__options
@property
def files(self):
return list(self.__files)
def __optionChanged(self, option, oldvalue, newvalue):
if hasattr(self, '_%s_changed' % option):
func = getattr(self, '_%s_changed' % option)
func(newvalue)
def __prepareGadgets(self, file, gadgets, type=None):
gadgets = self.__filterBadBytes(gadgets)
gadgets = self.__filterCfg(file, gadgets, type)
if not self.__options.all:
callback = None
if self.__callbacks and hasattr(self.__callbacks, '__deleteDoubleGadgetsProgress__'):
callback = self.__callbacks.__deleteDoubleGadgetsProgress__
gadgets = deleteDuplicates(gadgets, callback)
return gadgets
def __filterBadBytes(self, gadgets):
if self.__options.badbytes:
callback = None
if self.__callbacks and hasattr(self.__callbacks, '__filterBadBytesGadgetsProgress__'):
callback = self.__callbacks.__filterBadBytesGadgetsProgress__
gadgets = filterBadBytes(gadgets, self.options.badbytes, callback)
return gadgets
def __filterCfg(self, file, gadgets, type):
if self.__options.cfg_only and type==Type.PE:
callback = None
if self.__callbacks and hasattr(self.__callbacks, '__filterCfgGadgetsProgress__'):
callback = self.__callbacks.__filterCfgGadgetsProgress__
gadgets = cfgFilterGadgets(file.loader, gadgets, callback)
return gadgets
def __getCacheFileName(self, file):
return "%s_%s_%d_%s_%d" % (file.loader.checksum, str(file.arch), self.options.inst_count,str(self.options.type), sys.version_info.major)
def __saveCache(self, file):
cache_file = None
try:
temp = RopperService.CACHE_FOLDER
if not os.path.exists(temp):
os.makedirs(temp)
cache_file = temp + os.path.sep + self.__getCacheFileName(file)
count = RopperService.CACHE_FILE_COUNT
if not isWindows() and len(file.allGadgets) > 1000:
if os.path.exists(cache_file):
os.remove(cache_file)
length = len(file.allGadgets)
step = int(length / count)
for i in range(count-1):
gadgets = file.allGadgets[i*step: (i+1)*step]
with open(cache_file+'_%d' % (i+1),'wb') as f:
f.write(encode(repr(gadgets).encode('ascii'),'zip'))
gadgets = file.allGadgets[(count-1)*step:]
with open(cache_file+'_%d' % (count),'wb') as f:
f.write(encode(repr(gadgets).encode('ascii'),'zip'))
return
with open(cache_file,'wb') as f:
f.write(encode(repr(file.allGadgets).encode('ascii'),'zip'))
except BaseException as e:
print(e)
if cache_file:
for i in range(1, RopperService.CACHE_FILE_COUNT+1):
if os.path.exists(cache_file+'_%d' % i):
os.remove(cache_file+'_%d' % i)
def __loadCachePerProcess(self, fqueue, gqueue):
nan=0
while True:
cacheFileName = fqueue.get()
if cacheFileName is None:
fqueue.task_done()
break
if os.path.exists(cacheFileName):
with open(cacheFileName,'rb') as f:
data = f.read()
gqueue.put(eval(decode(data,'zip')))
else:
gqueue.put([])
fqueue.task_done()
def __loadCache(self, file):
mp = False
nan= 0
processes = []
single = False
cache_file = None
try:
temp = RopperService.CACHE_FOLDER
cache_file = temp + os.path.sep + self.__getCacheFileName(file)
if not os.path.exists(cache_file):
if not os.path.exists(cache_file+'_%d' % 1):
return
else:
if isWindows():
raise RopperError('Cache has to be cleared.')
mp = True and multiprocessing.cpu_count()>1
else:
single = True
if self.__callbacks and hasattr(self.__callbacks, '__message__'):
self.__callbacks.__message__('Load gadgets from cache')
if self.__callbacks and hasattr(self.__callbacks, '__gadgetSearchProgress__'):
self.__callbacks.__gadgetSearchProgress__(None, [], 0)
if not mp:
all_gadgets = []
if single:
with open(cache_file,'rb') as f:
data = f.read()
all_gadgets.extend(eval(decode(data,'zip')))
if self.__callbacks and hasattr(self.__callbacks, '__gadgetSearchProgress__'):
self.__callbacks.__gadgetSearchProgress__(None, all_gadgets, 1.0)
else:
for i in range(1,RopperService.CACHE_FILE_COUNT+1):
if os.path.exists(cache_file+'_%d' % i):
with open(cache_file+'_%d' % i,'rb') as f:
data = f.read()
all_gadgets.extend(eval(decode(data,'zip')))
if self.__callbacks and hasattr(self.__callbacks, '__gadgetSearchProgress__'):
self.__callbacks.__gadgetSearchProgress__(None, all_gadgets, float(i)/RopperService.CACHE_FILE_COUNT)
return all_gadgets
else:
count = min(multiprocessing.cpu_count(),RopperService.CACHE_FILE_COUNT)
gqueue = multiprocessing.Queue()
fqueue = multiprocessing.JoinableQueue()
for i in range(1,RopperService.CACHE_FILE_COUNT+1):
fqueue.put(cache_file+'_%d' % i)
all_gadgets = []
for i in range(count):
p=multiprocessing.Process(target=self.__loadCachePerProcess, args=(fqueue, gqueue))
p.start()
processes.append(p)
for i in range(count):
fqueue.put(None)
for i in range(RopperService.CACHE_FILE_COUNT):
gadgets = gqueue.get()
all_gadgets.extend(gadgets)
if self.__callbacks and hasattr(self.__callbacks, '__gadgetSearchProgress__'):
self.__callbacks.__gadgetSearchProgress__(None, all_gadgets, float(i+1)/RopperService.CACHE_FILE_COUNT)
return sorted(all_gadgets, key=Gadget.simpleInstructionString)
except KeyboardInterrupt:
if mp:
for p in processes:
if p and p.is_alive():
p.terminate()
except BaseException as e:
if mp:
for p in processes:
if p and p.is_alive():
p.terminate()
if cache_file:
for i in range(1,RopperService.CACHE_FILE_COUNT+1):
if os.path.exists(cache_file+'_%d' % i):
os.remove(cache_file+'_%d' % i)
def _badbytes_changed(self, value):
for f in self.__files:
if f.loaded:
f.gadgets = self.__prepareGadgets(f, f.allGadgets, f.type)
def _all_changed(self, value):
for f in self.__files:
if f.loaded:
f.gadgets = self.__prepareGadgets(f, f.allGadgets, f.type)
def _color_changed(self, value):
cstr.COLOR = value
def _detailed_changed(self, value):
Gadget.DETAILED = value
def _cfg_only_changed(self, value):
for f in self.__files:
if f.loaded and f.type == Type.PE:
f.gadgets = self.__prepareGadgets(f, f.allGadgets, f.type)
def _type_changed(self, value):
for f in self.__files:
if f.loaded:
self.loadGadgetsFor(f.name)
def _inst_count_changed(self, value):
for f in self.__files:
if f.loaded:
self.loadGadgetsFor(f.name)
def _getFileFor(self, name):
for file in self.__files:
if file.loader.fileName == name:
return file
return None
def clearCache(self):
temp = RopperService.CACHE_FOLDER
if os.path.exists(temp):
import shutil
shutil.rmtree(temp)
def getFileFor(self, name):
return self._getFileFor(name)
def addFile(self, name, bytes=None, arch=None, raw=False):
if self._getFileFor(name):
raise RopperError('file is already added: %s' % name)
if arch:
arch=getArchitecture(arch)
loader = Loader.open(name, bytes=bytes, raw=raw, arch=arch)
file = FileContainer(loader)
self.__files.append(file)
def removeFile(self, name):
for idx, fc in enumerate(self.__files):
if fc.loader.fileName == name:
del self.__files[idx]
def asm(self, code, arch='x86', format='hex'):
if format not in ('hex', 'string', 'raw'):
raise RopperError('Invalid format: %s\n Valid formats are: hex, string, raw' % format)
format = Format.HEX if format=='hex' else Format.STRING if format=='string' else Format.RAW
return self.ropper.assemble(code, arch=getArchitecture(arch), format=format)
def disasm(self, opcode, arch='x86'):
return self.ropper.disassemble(opcode, arch=getArchitecture(arch))
def searchPopPopRet(self, name=None):
to_return = {}
if not name:
for file in self.__files:
to_return[file.loader.fileName] = self.__ropper.searchPopPopRet(file.loader)
else:
fc = self._getFileFor(name)
if not fc:
raise RopperError('No such file opened: %s' % name)
to_return[name] = self.__ropper.searchPopPopRet(fc.loader)
return self.__filterBadBytes(to_return)
def searchJmpReg(self, regs=['esp'],name=None):
to_return = {}
if not name:
for file in self.__files:
to_return[file.loader.fileName] = self.__ropper.searchJmpReg(file.loader, regs)
else:
fc = self._getFileFor(name)
if not fc:
raise RopperError('No such file opened: %s' % name)
to_return[name] = self.__ropper.searchJmpReg(fc.loader, regs)
return self.__filterBadBytes(to_return)
def searchOpcode(self, opcode, name=None):
to_return = {}
if not name:
for file in self.__files:
to_return[file.loader.fileName] = self.__ropper.searchOpcode(file.loader, opcode)
else:
fc = self.getFileFor(name)
if not fc:
raise RopperError('No such file opened: %s' % name)
to_return[name] = self.__ropper.searchOpcode(fc.loader, opcode)
return self.__filterBadBytes(to_return)
def searchInstructions(self, code, name=None):
to_return = {}
if not name:
for file in self.__files:
to_return[file.loader.fileName] = self.__ropper.searchInstructions(file.loader, code)
else:
fc = self.getFileFor(name)
if not fc:
raise RopperError('No such file opened: %s' % name)
to_return[name] = self.__ropper.searchInstructions(fc.loader, code)
return self.__filterBadBytes(to_return)
def analyseGadgets(self, fileObject):
gadgets = fileObject.gadgets
analyser = Analyser()
cb = None
lg = len(gadgets)
if self.__callbacks and hasattr(self.__callbacks, '__analyseGadgetsProgress__'):
cb = self.__callbacks.__analyseGadgetsProgress__
for i,g in enumerate(gadgets):
g.info = analyser.analyse(g)
if cb:
cb(g, float(i)/lg)
if cb:
cb(None, 1.0)
self.__saveCache(fileObject)
fileObject.analysed = True
def loadGadgetsFor(self, name=None):
def load_gadgets(f):
gtype = None
cache = False
Gadget.IMAGE_BASES[f.loader.checksum] = f.loader.imageBase
if self.options.type == 'rop':
gtype = GadgetType.ROP
elif self.options.type == 'jop':
gtype = GadgetType.JOP
elif self.options.type == 'sys':
gtype = GadgetType.SYS
elif self.options.type == 'all':
gtype = GadgetType.ALL
f.allGadgets = self.__loadCache(f)
if f.allGadgets == None:
cache = True
f.allGadgets = self.__ropper.searchGadgets(f.loader, instructionCount=self.options.inst_count, gtype=gtype)
if cache:
self.__saveCache(f)
f.gadgets = self.__prepareGadgets(f, f.allGadgets, f.type)
f.analysed = f.gadgets[0].info is not None if len(f.gadgets) > 0 else False
#self._analyseGadgets(f.gadgets)
if name is None:
for fc in self.__files:
load_gadgets(fc)
else:
for fc in self.__files:
if fc.loader.fileName == name:
load_gadgets(fc)
def printGadgetsFor(self, name=None):
def print_gadgets(f):
print(f.loader.fileName)
for g in f.gadgets:
if self.options.detailed:
print(g)
else:
print(g.simpleString())
if name is None:
for f in self.__files:
print_gadgets(f)
else:
for f in self.__files:
if f.loader.fileName == name:
print_gadgets(f)
def searchString(self, string='', name=None):
def search(f, string):
data = []
if not string or string == '[ -~]{2}[ -~]*':
string = '[ -~]{2}[ -~]*'
else:
string = f.arch.searcher.prepareFilter(string)
sections = list(f.dataSections)
string = string.encode('ascii') # python 3 compatibility
for section in sections:
b = bytes(bytearray(section.bytes))
for match in re.finditer(string, b):
vaddr = f.imageBase + section.offset if f.imageBase != None else section.virtualAddress
data.append( (match.start() + vaddr , match.group()))
return data
to_return = {}
if not name:
for file in self.__files:
to_return[file.loader.fileName] = search(file.loader, string)
else:
fc = self._getFileFor(name)
if not fc:
raise RopperError('No such file opened: %s' % name)
to_return[name] = search(fc.loader, string)
return to_return
def search(self, search, quality=None, name=None):
if name:
fc = self._getFileFor(name)
if not fc:
raise RopperError('No such file opened: %s' % name)
s = fc.loader.arch.searcher
for gadget in s.search(fc.gadgets, search, quality):
yield(fc.name, gadget)
else:
for fc in self.__files:
s = fc.loader.arch.searcher
for gadget in s.search(fc.gadgets, search, quality):
yield(fc.name, gadget)
def semanticSearch(self, search, stableRegs=[], name=None):
count = 0
if name:
fc = self._getFileFor(name)
if not fc:
raise RopperError('No such file opened: %s' % name)
s = fc.loader.arch.searcher
for gadget in s.semanticSearch(fc.gadgets, search, self.options.inst_count, stableRegs):
if self.options.count_of_findings == 0 or self.options.count_of_findings > count:
yield(fc.name, gadget)
else:
break
count += 1
self.__saveCache(fc)
else:
for fc in self.__files:
s = fc.loader.arch.searcher
for gadget in s.semanticSearch(fc.gadgets, search, self.options.inst_count, stableRegs):
if self.options.count_of_findings == 0 or self.options.count_of_findings > count:
yield(fc.name, gadget)
else:
break
count += 1
self.__saveCache(fc)
def searchdict(self, search, quality=None, name=None):
to_return = {}
for file, gadget in self.search(search, quality, name):
l = to_return.get(file)
if not l:
l = []
to_return[file] = l
l.append(gadget)
return to_return
def disassAddress(self, name, address, length):
fc = self.getFileFor(name)
if not fc:
raise RopperError('No such file opened: %s' % name)
eSections = fc.loader.executableSections
for section in eSections:
if section.virtualAddress <= address and section.virtualAddress + section.size > address:
ropper = Ropper()
g = ropper.disassembleAddress(section, fc.loader, address, address - (fc.loader.imageBase+section.offset), length)
if not g:
raise RopperError('Cannot disassemble address: %s' % toHex(address))
if length < 0:
length = length * -1
return g.disassemblyString()
return ''
def createRopChain(self, chain, arch, options={}):
callback = None
if self.__callbacks and hasattr(self.__callbacks, '__ropchainMessages__'):
callback = self.__callbacks.__ropchainMessages__
b = []
gadgets = {}
for binary in self.__files:
if str(binary.arch) == arch:
gadgets[binary.loader] = binary.gadgets
b.append(binary.loader)
generator = RopChain.get(b, gadgets, chain, callback, unhexlify(self.options.badbytes))
if not generator:
raise RopperError('%s does not have support for %s chain generation at the moment. Its a future feature.' % (self.files[0].loader.arch.__class__.__name__, chain))
return generator.create(options)
def setImageBaseFor(self, name, imagebase):
file = self._getFileFor(name)
if not file:
raise RopperError('No such file opened: %s' % name)
file.loader.imageBase = imagebase
Gadget.IMAGE_BASES[file.loader.checksum] = file.loader.imageBase
if file.loaded and (self.options.badbytes or self.options.cfg_only and file.type == Type.PE):
file.gadgets = self.__prepareGadgets(file, file.allGadgets, file.type)
def setArchitectureFor(self, name, arch):
file = self.getFileFor(name)
if not file:
raise RopperError('No such file opened: %s' % name)
file.loader.arch = getArchitecture(arch)
if file.loaded:
self.loadGadgetsFor(name)
def _setGadgets(self, name, gadgets):
fc = self.getFileFor(name)
if not fc:
raise RopperError('No such file opened: %s' % name)
fc.allGadgets = gadgets
fc.gadgets = self.__prepareGadgets(fc, fc.allGadgets, fc.type)
def test_opcode_failures(self):
r = Ropper()
if version_info.major == 3 and version_info.minor >= 2:
# Wrong question mark position
with self.assertRaisesRegex(RopperError, "A \? for the highest 4 bit of a byte is not supported.*"):
r.searchOpcode(self.file, "ff?4")
# Wrong lengh
with self.assertRaisesRegex(RopperError, "The length of the opcode has to be a multiple of two"):
r.searchOpcode(self.file, "ff4")
# Unallowed character
with self.assertRaisesRegex(RopperError, "Invalid characters in opcode string"):
r.searchOpcode(self.file, "ff4r")
else:
# Wrong question mark position
with self.assertRaisesRegexp(RopperError, "A \? for the highest 4 bit of a byte is not supported.*"):
r.searchOpcode(self.file, "ff?4")
# Wrong lengh
with self.assertRaisesRegexp(RopperError, "The length of the opcode has to be a multiple of two"):
r.searchOpcode(self.file, "ff4")
# Unallowed character
with self.assertRaisesRegexp(RopperError, "Invalid characters in opcode string"):
r.searchOpcode(self.file, "ff4r")