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Consolidate libc definitions for OSX and Linux

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This commit is contained in:
Spencer McIntyre 2021-02-23 20:37:46 -05:00
parent f0b37fad91
commit 966db5f616
1 changed files with 4 additions and 9 deletions
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13
python/meterpreter/ext_server_stdapi.py
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@ -69,7 +69,11 @@ else:
long = int
unicode = lambda x: (x.decode('UTF-8') if isinstance(x, bytes) else x)
libc = None
if has_ctypes:
if sys.platform == 'darwin' or sys.platform.startswith('linux'):
libc = ctypes.CDLL(ctypes.util.find_library('c'))
size_t = getattr(ctypes, 'c_uint' + str(ctypes.sizeof(ctypes.c_void_p) * 8))
#
# Windows Structures
@ -1863,13 +1867,11 @@ def _linux_check_maps(address, size, perms=''):
return True
def _linux_if_indextoname(index):
libc = ctypes.cdll.LoadLibrary(ctypes.util.find_library('c'))
name = (ctypes.c_char * 256)()
if libc.if_indextoname(index, name):
return name.value.decode('ascii')
def _linux_memread(address, size):
libc = ctypes.cdll.LoadLibrary('libc.so.6')
if not hasattr(libc, 'process_vm_readv'):
# requires linux 3.2+ / glibc 2.15+, see:
# http://man7.org/linux/man-pages/man2/process_vm_readv.2.html#VERSIONS
@ -1892,7 +1894,6 @@ def _linux_memread(address, size):
return ctarray_to_bytes(buff)
def _linux_memwrite(address, data):
libc = ctypes.cdll.LoadLibrary('libc.so.6')
if not hasattr(libc, 'process_vm_writev'):
# requires linux 3.2+ / glibc 2.15+, see:
# http://man7.org/linux/man-pages/man2/process_vm_writev.2.html#VERSIONS
@ -1916,7 +1917,6 @@ def _linux_memwrite(address, data):
return size
def _osx_memread(address, size):
libc = ctypes.CDLL(ctypes.util.find_library('c'))
task = libc.mach_task_self()
libc.mach_vm_read.argtypes = [ctypes.c_uint32, size_t, size_t, ctypes.POINTER(ctypes.c_void_p), ctypes.POINTER(ctypes.c_uint32)]
libc.mach_vm_read.restype = ctypes.c_uint32
@ -1933,7 +1933,6 @@ def _osx_memread(address, size):
return ctarray_to_bytes(buff.contents)
def _osx_memwrite(address, data):
libc = ctypes.CDLL(ctypes.util.find_library('c'))
task = libc.mach_task_self()
libc.mach_vm_write.argtypes = [ctypes.c_uint32, size_t, ctypes.c_void_p, ctypes.c_uint32]
libc.mach_vm_write.restype = ctypes.c_uint32
@ -2036,10 +2035,6 @@ def stdapi_railgun_api(request, response):
debug_print('[*] railgun calling: ' + lib_name + '!' + func_name)
prototype = func_type(native, *func_args)
if sys.platform == 'darwin' or sys.platform.startswith('linux'):
if sys.platform == 'darwin':
libc = ctypes.CDLL(ctypes.util.find_library('c'))
else:
libc = ctypes.cdll.LoadLibrary('libc.so.6')
p_errno = ctypes.cast(libc.errno, ctypes.POINTER(ctypes.c_int))
errno = p_errno.contents
last_error = ctypes.c_int(0)