(* Capstone Disassembly Engine * By Nguyen Anh Quynh <aquynh@gmail.com>, 2013-2014 *) open Printf open Capstone open X86 open X86_const let print_string_hex comment str = printf "%s" comment; for i = 0 to (Array.length str - 1) do printf "0x%02x " str.(i) done; printf "\n" let _X86_CODE16 = "\x8d\x4c\x32\x08\x01\xd8\x81\xc6\x34\x12\x00\x00";; let _X86_CODE32 = "\x8d\x4c\x32\x08\x01\xd8\x81\xc6\x34\x12\x00\x00";; let _X86_CODE64 = "\x55\x48\x8b\x05\xb8\x13\x00\x00";; let all_tests = [ (CS_ARCH_X86, [CS_MODE_16], _X86_CODE16, "X86 16bit (Intel syntax)", 0L); (CS_ARCH_X86, [CS_MODE_32], _X86_CODE32, "X86 32bit (ATT syntax)", _CS_OPT_SYNTAX_ATT); (CS_ARCH_X86, [CS_MODE_32], _X86_CODE32, "X86 32 (Intel syntax)", 0L); (CS_ARCH_X86, [CS_MODE_64], _X86_CODE64, "X86 64 (Intel syntax)", 0L); ];; let print_op handle i op = ( match op.value with | X86_OP_INVALID _ -> (); (* this would never happens *) | X86_OP_REG reg -> printf "\t\top[%d]: REG = %s\n" i (cs_reg_name handle reg); | X86_OP_IMM imm -> printf "\t\top[%d]: IMM = 0x%x\n" i imm; | X86_OP_FP fp -> printf "\t\top[%d]: FP = %f\n" i fp; | X86_OP_MEM mem -> ( printf "\t\top[%d]: MEM\n" i; if mem.base != 0 then printf "\t\t\toperands[%u].mem.base: REG = %s\n" i (cs_reg_name handle mem.base); if mem.index != 0 then printf "\t\t\toperands[%u].mem.index: REG = %s\n" i (cs_reg_name handle mem.index); if mem.scale != 1 then printf "\t\t\toperands[%u].mem.scale: %d\n" i mem.scale; if mem.disp != 0 then printf "\t\t\toperands[%u].mem.disp: 0x%x\n" i mem.disp; ); ); ();; let print_detail handle mode insn = match insn.arch with | CS_INFO_X86 x86 -> ( print_string_hex "\tPrefix: " x86.prefix; (* print instruction's opcode *) print_string_hex "\tOpcode: " x86.opcode; (* print operand's size, address size, displacement size & immediate size *) printf "\taddr_size: %u\n" x86.addr_size; (* print modRM byte *) printf "\tmodrm: 0x%x\n" x86.modrm; (* print displacement value *) if x86.disp != 0 then printf "\tdisp: 0x%x\n" x86.disp; (* SIB is invalid in 16-bit mode *) if not (List.mem CS_MODE_16 mode) then ( (* print SIB byte *) printf "\tsib: 0x%x\n" x86.sib; (* print sib index/scale/base (if applicable) *) if x86.sib_index != _X86_REG_INVALID then printf "\tsib_index: %s, sib_scale: %u, sib_base: %s\n" (cs_reg_name handle x86.sib_index) x86.sib_scale (cs_reg_name handle x86.sib_base); ); (* print all operands info (type & value) *) if (Array.length x86.operands) > 0 then ( printf "\top_count: %d\n" (Array.length x86.operands); Array.iteri (print_op handle) x86.operands; ); printf "\n"; ); | _ -> (); ;; let print_insn handle mode insn = printf "0x%x\t%s\t%s\n" insn.address insn.mnemonic insn.op_str; print_detail handle mode insn let print_arch x = let (arch, mode, code, comment, syntax) = x in let handle = cs_open arch mode in ( if syntax != 0L then ( let err = cs_option handle CS_OPT_SYNTAX syntax in match err with | _ -> (); ); let err = cs_option handle CS_OPT_DETAIL _CS_OPT_ON in match err with | _ -> (); let insns = cs_disasm handle code 0x1000L 0L in ( printf "*************\n"; printf "Platform: %s\n" comment; List.iter (print_insn handle mode) insns; ); match cs_close handle with | 0 -> (); | _ -> printf "Failed to close handle"; );; List.iter print_arch all_tests;;