Source code for angr.state_plugins.libc

from .plugin import SimStatePlugin


[docs] class SimStateLibc(SimStatePlugin): """ This state plugin keeps track of various libc stuff: """ # __slots__ = [ 'heap_location', 'max_str_symbolic_bytes' ] LOCALE_ARRAY = [ b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0x80 b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0x86 b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0x8c b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0x92 b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0x98 b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0x9e b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xa4 b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xaa b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xb0 b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xb6 b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xbc b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xc2 b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xc8 b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xce b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xd4 b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xda b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xe0 b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xe6 b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xec b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xf2 b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xf8 b"\000\000", b"\000\000", b"\002\000", b"\002\000", b"\002\000", b"\002\000", # 0xfe b"\002\000", b"\002\000", b"\002\000", b"\002\000", b"\002\000", b"\003\040", # 0x04 b"\002\040", b"\002\040", b"\002\040", b"\002\040", b"\002\000", b"\002\000", # 0x0a b"\002\000", b"\002\000", b"\002\000", b"\002\000", b"\002\000", b"\002\000", # 0x10 b"\002\000", b"\002\000", b"\002\000", b"\002\000", b"\002\000", b"\002\000", # 0x16 b"\002\000", b"\002\000", b"\002\000", b"\002\000", b"\001\140", b"\004\300", # 0x1c b"\004\300", b"\004\300", b"\004\300", b"\004\300", b"\004\300", b"\004\300", # 0x22 b"\004\300", b"\004\300", b"\004\300", b"\004\300", b"\004\300", b"\004\300", # 0x28 b"\004\300", b"\004\300", b"\010\330", b"\010\330", b"\010\330", b"\010\330", # 0x2e b"\010\330", b"\010\330", b"\010\330", b"\010\330", b"\010\330", b"\010\330", # 0x34 b"\004\300", b"\004\300", b"\004\300", b"\004\300", b"\004\300", b"\004\300", # 0x3a b"\004\300", b"\010\325", b"\010\325", b"\010\325", b"\010\325", b"\010\325", # 0x40 b"\010\325", b"\010\305", b"\010\305", b"\010\305", b"\010\305", b"\010\305", # 0x46 b"\010\305", b"\010\305", b"\010\305", b"\010\305", b"\010\305", b"\010\305", # 0x4c b"\010\305", b"\010\305", b"\010\305", b"\010\305", b"\010\305", b"\010\305", # 0x52 b"\010\305", b"\010\305", b"\010\305", b"\004\300", b"\004\300", b"\004\300", # 0x58 b"\004\300", b"\004\300", b"\004\300", b"\010\326", b"\010\326", b"\010\326", # 0x5e b"\010\326", b"\010\326", b"\010\326", b"\010\306", b"\010\306", b"\010\306", # 0x64 b"\010\306", b"\010\306", b"\010\306", b"\010\306", b"\010\306", b"\010\306", # 0x6a b"\010\306", b"\010\306", b"\010\306", b"\010\306", b"\010\306", b"\010\306", # 0x70 b"\010\306", b"\010\306", b"\010\306", b"\010\306", b"\010\306", b"\004\300", # 0x76 b"\004\300", b"\004\300", b"\004\300", b"\002\000", b"\000\000", b"\000\000", # 0x7c b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0x82 b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0x88 b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0x8e b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0x94 b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0x9a b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xa0 b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xa6 b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xac b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xb2 b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xb8 b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xbe b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xc4 b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xca b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xd0 b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xd6 b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xdc b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xe2 b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xe8 b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xee b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xf4 b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", b"\000\000", # 0xfa ] TOLOWER_LOC_ARRAY = [ 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, # 0x80 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, # 0x88 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, # 0x90 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F, # 0x98 0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, # 0xa0 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF, # 0xa8 0xB0, 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, # 0xb0 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF, # 0xb8 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, # 0xc0 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF, # 0xc8 0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, # 0xd0 0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF, # 0xd8 0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, # 0xe0 0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF, # 0xe8 0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, # 0xf0 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFFFFFFFF, # 0xf8 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, # 0x00 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, # 0x08 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, # 0x10 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, # 0x18 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, # 0x20 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, # 0x28 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, # 0x30 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F, # 0x38 0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, # 0x40 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, # 0x48 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, # 0x50 0x78, 0x79, 0x7A, 0x5B, 0x5C, 0x5D, 0x5E, 0x5F, # 0x58 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, # 0x60 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, # 0x68 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, # 0x70 0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F, # 0x78 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, # 0x80 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, # 0x88 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, # 0x90 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F, # 0x98 0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, # 0xa0 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF, # 0xa8 0xB0, 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, # 0xb0 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF, # 0xb8 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, # 0xc0 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF, # 0xc8 0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, # 0xd0 0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF, # 0xd8 0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, # 0xe0 0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF, # 0xe8 0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, # 0xf0 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF, # 0xf8 ] TOUPPER_LOC_ARRAY = [ 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, # 0x80 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, # 0x88 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, # 0x90 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F, # 0x98 0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, # 0xa0 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF, # 0xa8 0xB0, 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, # 0xb0 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF, # 0xb8 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, # 0xc0 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF, # 0xc8 0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, # 0xd0 0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF, # 0xd8 0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, # 0xe0 0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF, # 0xe8 0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, # 0xf0 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFFFFFFFF, # 0xf8 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, # 0x00 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, # 0x08 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, # 0x10 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, # 0x18 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, # 0x20 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, # 0x28 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, # 0x30 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F, # 0x38 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, # 0x40 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, # 0x48 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, # 0x50 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E, 0x5F, # 0x58 0x60, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, # 0x60 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, # 0x68 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, # 0x70 0x58, 0x59, 0x5A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F, # 0x78 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, # 0x80 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, # 0x88 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, # 0x90 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F, # 0x98 0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, # 0xa0 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF, # 0xa8 0xB0, 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, # 0xb0 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF, # 0xb8 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, # 0xc0 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF, # 0xc8 0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, # 0xd0 0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF, # 0xd8 0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, # 0xe0 0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF, # 0xe8 0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, # 0xf0 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF, # 0xf8 ]
[docs] def __init__(self): SimStatePlugin.__init__(self) # various thresholds self.buf_symbolic_bytes = 60 self.max_symbolic_strstr = 1 self.max_symbolic_strchr = 16 self.max_variable_size = 128 self.max_str_len = 128 self.max_buffer_size = 48 self.max_strtol_len = 11 # len(str(2**31)) + 1 self.max_memcpy_size = 4096 self.max_packet_size = 256 self.max_gets_size = 256 # strtok self.strtok_heap = [] self.simple_strtok = True self.strtok_token_size = 1024 # helpful stuff self.strdup_stack = [] # as per Audrey: # the idea is that there's two abi versions, and for one of them, the # address passed to libc_start_main isn't actually the address of the # function, but the address of a pointer to a struct containing the # actual function address and the table of contents address self.ppc64_abiv = None # It will be initialized in __libc_start_main SimProcedure self.ctype_b_loc_table_ptr = None self.ctype_tolower_loc_table_ptr = None self.ctype_toupper_loc_table_ptr = None self.errno_location = None
@SimStatePlugin.memo def copy(self, memo): # pylint: disable=unused-argument o = super().copy(memo) o.buf_symbolic_bytes = self.buf_symbolic_bytes o.max_symbolic_strstr = self.max_symbolic_strstr o.max_symbolic_strchr = self.max_symbolic_strchr o.max_variable_size = self.max_variable_size o.max_str_len = self.max_str_len o.max_buffer_size = self.max_buffer_size o.max_strtol_len = self.max_strtol_len o.max_memcpy_size = self.max_memcpy_size o.max_packet_size = self.max_packet_size o.max_gets_size = self.max_gets_size o.strtok_heap = self.strtok_heap[:] o.simple_strtok = self.simple_strtok o.strtok_token_size = self.strtok_token_size o.strdup_stack = self.strdup_stack[:] o.ppc64_abiv = self.ppc64_abiv o.ctype_b_loc_table_ptr = self.ctype_b_loc_table_ptr o.ctype_tolower_loc_table_ptr = self.ctype_tolower_loc_table_ptr o.ctype_toupper_loc_table_ptr = self.ctype_toupper_loc_table_ptr o.errno_location = self.errno_location return o
[docs] def merge(self, others, merge_conditions, common_ancestor=None): # pylint: disable=unused-argument return False
[docs] def widen(self, others): return False
@property def errno(self): return self.state.mem[self.errno_location].int.resolved @errno.setter def errno(self, val): self.state.mem[self.errno_location].int = val
[docs] def ret_errno(self, val): try: ival = getattr(self.state.posix, val) except AttributeError as e: raise ValueError("Invalid errno constant %s" % val) from e if self.state.scratch.sim_procedure.is_syscall: return -ival else: self.errno = ival return -1
from angr.sim_state import SimState SimState.register_default("libc", SimStateLibc)