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#!/usr/bin/env python
# Capstone Python bindings, by Nguyen Anh Quynnh <aquynh@gmail.com>
from __future__ import print_function
from capstone import *
from capstone.x86 import *
from xprint import to_hex, to_x, to_x_32
X86_CODE64 = b"\x55\x48\x8b\x05\xb8\x13\x00\x00\xe9\xea\xbe\xad\xde\xff\x25\x23\x01\x00\x00\xe8\xdf\xbe\xad\xde\x74\xff"
X86_CODE16 = b"\x8d\x4c\x32\x08\x01\xd8\x81\xc6\x34\x12\x00\x00\x05\x23\x01\x00\x00\x36\x8b\x84\x91\x23\x01\x00\x00\x41\x8d\x84\x39\x89\x67\x00\x00\x8d\x87\x89\x67\x00\x00\xb4\xc6\x66\xe9\xb8\x00\x00\x00\x67\xff\xa0\x23\x01\x00\x00\x66\xe8\xcb\x00\x00\x00\x74\xfc"
X86_CODE32 = b"\x8d\x4c\x32\x08\x01\xd8\x81\xc6\x34\x12\x00\x00\x05\x23\x01\x00\x00\x36\x8b\x84\x91\x23\x01\x00\x00\x41\x8d\x84\x39\x89\x67\x00\x00\x8d\x87\x89\x67\x00\x00\xb4\xc6\xe9\xea\xbe\xad\xde\xff\xa0\x23\x01\x00\x00\xe8\xdf\xbe\xad\xde\x74\xff"
all_tests = (
(CS_ARCH_X86, CS_MODE_16, X86_CODE16, "X86 16bit (Intel syntax)", None),
(CS_ARCH_X86, CS_MODE_32, X86_CODE32, "X86 32 (AT&T syntax)", CS_OPT_SYNTAX_ATT),
(CS_ARCH_X86, CS_MODE_32, X86_CODE32, "X86 32 (Intel syntax)", None),
(CS_ARCH_X86, CS_MODE_64, X86_CODE64, "X86 64 (Intel syntax)", None),
)
def get_eflag_name(eflag):
if eflag == X86_EFLAGS_UNDEFINED_OF:
return "UNDEF_OF"
elif eflag == X86_EFLAGS_UNDEFINED_SF:
return "UNDEF_SF"
elif eflag == X86_EFLAGS_UNDEFINED_ZF:
return "UNDEF_ZF"
elif eflag == X86_EFLAGS_MODIFY_AF:
return "MOD_AF"
elif eflag == X86_EFLAGS_UNDEFINED_PF:
return "UNDEF_PF"
elif eflag == X86_EFLAGS_MODIFY_CF:
return "MOD_CF"
elif eflag == X86_EFLAGS_MODIFY_SF:
return "MOD_SF"
elif eflag == X86_EFLAGS_MODIFY_ZF:
return "MOD_ZF"
elif eflag == X86_EFLAGS_UNDEFINED_AF:
return "UNDEF_AF"
elif eflag == X86_EFLAGS_MODIFY_PF:
return "MOD_PF"
elif eflag == X86_EFLAGS_UNDEFINED_CF:
return "UNDEF_CF"
elif eflag == X86_EFLAGS_MODIFY_OF:
return "MOD_OF"
elif eflag == X86_EFLAGS_RESET_OF:
return "RESET_OF"
elif eflag == X86_EFLAGS_RESET_CF:
return "RESET_CF"
elif eflag == X86_EFLAGS_RESET_DF:
return "RESET_DF"
elif eflag == X86_EFLAGS_RESET_IF:
return "RESET_IF"
elif eflag == X86_EFLAGS_TEST_OF:
return "TEST_OF"
elif eflag == X86_EFLAGS_TEST_SF:
return "TEST_SF"
elif eflag == X86_EFLAGS_TEST_ZF:
return "TEST_ZF"
elif eflag == X86_EFLAGS_TEST_PF:
return "TEST_PF"
elif eflag == X86_EFLAGS_TEST_CF:
return "TEST_CF"
elif eflag == X86_EFLAGS_RESET_SF:
return "RESET_SF"
elif eflag == X86_EFLAGS_RESET_AF:
return "RESET_AF"
elif eflag == X86_EFLAGS_RESET_TF:
return "RESET_TF"
elif eflag == X86_EFLAGS_RESET_NT:
return "RESET_NT"
elif eflag == X86_EFLAGS_PRIOR_OF:
return "PRIOR_OF"
elif eflag == X86_EFLAGS_PRIOR_SF:
return "PRIOR_SF"
elif eflag == X86_EFLAGS_PRIOR_ZF:
return "PRIOR_ZF"
elif eflag == X86_EFLAGS_PRIOR_AF:
return "PRIOR_AF"
elif eflag == X86_EFLAGS_PRIOR_PF:
return "PRIOR_PF"
elif eflag == X86_EFLAGS_PRIOR_CF:
return "PRIOR_CF"
elif eflag == X86_EFLAGS_PRIOR_TF:
return "PRIOR_TF"
elif eflag == X86_EFLAGS_PRIOR_IF:
return "PRIOR_IF"
elif eflag == X86_EFLAGS_PRIOR_DF:
return "PRIOR_DF"
elif eflag == X86_EFLAGS_TEST_NT:
return "TEST_NT"
elif eflag == X86_EFLAGS_TEST_DF:
return "TEST_DF"
elif eflag == X86_EFLAGS_RESET_PF:
return "RESET_PF"
elif eflag == X86_EFLAGS_PRIOR_NT:
return "PRIOR_NT"
elif eflag == X86_EFLAGS_MODIFY_TF:
return "MOD_TF"
elif eflag == X86_EFLAGS_MODIFY_IF:
return "MOD_IF"
elif eflag == X86_EFLAGS_MODIFY_DF:
return "MOD_DF"
elif eflag == X86_EFLAGS_MODIFY_NT:
return "MOD_NT"
elif eflag == X86_EFLAGS_MODIFY_RF:
return "MOD_RF"
elif eflag == X86_EFLAGS_SET_CF:
return "SET_CF"
elif eflag == X86_EFLAGS_SET_DF:
return "SET_DF"
elif eflag == X86_EFLAGS_SET_IF:
return "SET_IF"
else:
return None
def print_insn_detail(mode, insn):
def print_string_hex(comment, str):
print(comment, end=' '),
for c in str:
print("0x%02x " % c, end=''),
print()
# print address, mnemonic and operands
print("0x%x:\t%s\t%s" % (insn.address, insn.mnemonic, insn.op_str))
# "data" instruction generated by SKIPDATA option has no detail
if insn.id == 0:
return
# print instruction prefix
print_string_hex("\tPrefix:", insn.prefix)
# print instruction's opcode
print_string_hex("\tOpcode:", insn.opcode)
# print operand's REX prefix (non-zero value is relavant for x86_64 instructions)
print("\trex: 0x%x" % (insn.rex))
# print operand's address size
print("\taddr_size: %u" % (insn.addr_size))
# print modRM byte
print("\tmodrm: 0x%x" % (insn.modrm))
# print modRM offset
if insn.encoding.modrm_offset != 0:
print("\tmodrm_offset: 0x%x" % (insn.encoding.modrm_offset))
# print displacement value
print("\tdisp: 0x%s" % to_x_32(insn.disp))
# print displacement offset (offset into instruction bytes)
if insn.encoding.disp_offset != 0:
print("\tdisp_offset: 0x%x" % (insn.encoding.disp_offset))
# print displacement size
if insn.encoding.disp_size != 0:
print("\tdisp_size: 0x%x" % (insn.encoding.disp_size))
# SIB is not available in 16-bit mode
if (mode & CS_MODE_16 == 0):
# print SIB byte
print("\tsib: 0x%x" % (insn.sib))
if (insn.sib):
if insn.sib_base != 0:
print("\t\tsib_base: %s" % (insn.reg_name(insn.sib_base)))
if insn.sib_index != 0:
print("\t\tsib_index: %s" % (insn.reg_name(insn.sib_index)))
if insn.sib_scale != 0:
print("\t\tsib_scale: %d" % (insn.sib_scale))
# XOP CC type
if insn.xop_cc != X86_XOP_CC_INVALID:
print("\txop_cc: %u" % (insn.xop_cc))
# SSE CC type
if insn.sse_cc != X86_SSE_CC_INVALID:
print("\tsse_cc: %u" % (insn.sse_cc))
# AVX CC type
if insn.avx_cc != X86_AVX_CC_INVALID:
print("\tavx_cc: %u" % (insn.avx_cc))
# AVX Suppress All Exception
if insn.avx_sae:
print("\tavx_sae: TRUE")
# AVX Rounding Mode type
if insn.avx_rm != X86_AVX_RM_INVALID:
print("\tavx_rm: %u" % (insn.avx_rm))
count = insn.op_count(X86_OP_IMM)
if count > 0:
print("\timm_count: %u" % count)
for i in range(count):
op = insn.op_find(X86_OP_IMM, i + 1)
print("\t\timms[%u]: 0x%s" % (i + 1, to_x(op.imm)))
if insn.encoding.imm_offset != 0:
print("\timm_offset: 0x%x" % (insn.encoding.imm_offset))
if insn.encoding.imm_size != 0:
print("\timm_size: 0x%x" % (insn.encoding.imm_size))
if len(insn.operands) > 0:
print("\top_count: %u" % len(insn.operands))
c = -1
for i in insn.operands:
c += 1
if i.type == X86_OP_REG:
print("\t\toperands[%u].type: REG = %s" % (c, insn.reg_name(i.reg)))
if i.type == X86_OP_IMM:
print("\t\toperands[%u].type: IMM = 0x%s" % (c, to_x(i.imm)))
if i.type == X86_OP_MEM:
print("\t\toperands[%u].type: MEM" % c)
if i.mem.segment != 0:
print("\t\t\toperands[%u].mem.segment: REG = %s" % (c, insn.reg_name(i.mem.segment)))
if i.mem.base != 0:
print("\t\t\toperands[%u].mem.base: REG = %s" % (c, insn.reg_name(i.mem.base)))
if i.mem.index != 0:
print("\t\t\toperands[%u].mem.index: REG = %s" % (c, insn.reg_name(i.mem.index)))
if i.mem.scale != 1:
print("\t\t\toperands[%u].mem.scale: %u" % (c, i.mem.scale))
if i.mem.disp != 0:
print("\t\t\toperands[%u].mem.disp: 0x%s" % (c, to_x(i.mem.disp)))
# AVX broadcast type
if i.avx_bcast != X86_AVX_BCAST_INVALID:
print("\t\toperands[%u].avx_bcast: %u" % (c, i.avx_bcast))
# AVX zero opmask {z}
if i.avx_zero_opmask:
print("\t\toperands[%u].avx_zero_opmask: TRUE" % (c))
print("\t\toperands[%u].size: %u" % (c, i.size))
if i.access == CS_AC_READ:
print("\t\toperands[%u].access: READ\n" % (c))
elif i.access == CS_AC_WRITE:
print("\t\toperands[%u].access: WRITE\n" % (c))
elif i.access == CS_AC_READ | CS_AC_WRITE:
print("\t\toperands[%u].access: READ | WRITE\n" % (c))
(regs_read, regs_write) = insn.regs_access()
if len(regs_read) > 0:
print("\tRegisters read:", end="")
for r in regs_read:
print(" %s" %(insn.reg_name(r)), end="")
print("")
if len(regs_write) > 0:
print("\tRegisters modified:", end="")
for r in regs_write:
print(" %s" %(insn.reg_name(r)), end="")
print("")
if insn.eflags:
updated_flags = []
for i in range(0,46):
if insn.eflags & (1 << i):
updated_flags.append(get_eflag_name(1 << i))
print("\tEFLAGS: %s" % (','.join(p for p in updated_flags)))
# ## Test class Cs
def test_class():
for (arch, mode, code, comment, syntax) in all_tests:
print("*" * 16)
print("Platform: %s" % comment)
print("Code: %s" % to_hex(code))
print("Disasm:")
try:
md = Cs(arch, mode)
md.detail = True
if syntax is not None:
md.syntax = syntax
for insn in md.disasm(code, 0x1000):
print_insn_detail(mode, insn)
print ()
print ("0x%x:\n" % (insn.address + insn.size))
except CsError as e:
print("ERROR: %s" % e)
if __name__ == '__main__':
test_class()
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