1(* Capstone Disassembly Engine 2* By Nguyen Anh Quynh <aquynh@gmail.com>, 2013-2014 *) 3 4open Printf 5open Capstone 6open X86 7open X86_const 8 9 10let print_string_hex comment str = 11 printf "%s" comment; 12 for i = 0 to (Array.length str - 1) do 13 printf "0x%02x " str.(i) 14 done; 15 printf "\n" 16 17 18let _X86_CODE16 = "\x8d\x4c\x32\x08\x01\xd8\x81\xc6\x34\x12\x00\x00";; 19let _X86_CODE32 = "\x8d\x4c\x32\x08\x01\xd8\x81\xc6\x34\x12\x00\x00";; 20let _X86_CODE64 = "\x55\x48\x8b\x05\xb8\x13\x00\x00";; 21 22 23let all_tests = [ 24 (CS_ARCH_X86, [CS_MODE_16], _X86_CODE16, "X86 16bit (Intel syntax)", 0L); 25 (CS_ARCH_X86, [CS_MODE_32], _X86_CODE32, "X86 32bit (ATT syntax)", _CS_OPT_SYNTAX_ATT); 26 (CS_ARCH_X86, [CS_MODE_32], _X86_CODE32, "X86 32 (Intel syntax)", 0L); 27 (CS_ARCH_X86, [CS_MODE_64], _X86_CODE64, "X86 64 (Intel syntax)", 0L); 28];; 29 30let print_op handle i op = 31 ( match op.value with 32 | X86_OP_INVALID _ -> (); (* this would never happens *) 33 | X86_OP_REG reg -> printf "\t\top[%d]: REG = %s [sz=%d]\n" i (cs_reg_name handle reg) op.size; 34 | X86_OP_IMM imm -> printf "\t\top[%d]: IMM = 0x%x [sz=%d]\n" i imm op.size; 35 | X86_OP_MEM mem -> ( printf "\t\top[%d]: MEM [sz=%d]\n" i op.size; 36 if mem.base != 0 then 37 printf "\t\t\toperands[%u].mem.base: REG = %s\n" i (cs_reg_name handle mem.base); 38 if mem.index != 0 then 39 printf "\t\t\toperands[%u].mem.index: REG = %s\n" i (cs_reg_name handle mem.index); 40 if mem.scale != 1 then 41 printf "\t\t\toperands[%u].mem.scale: %d\n" i mem.scale; 42 if mem.disp != 0 then 43 printf "\t\t\toperands[%u].mem.disp: 0x%x\n" i mem.disp; 44 ); 45 ); 46 ();; 47 48 49let print_detail handle mode insn = 50 match insn.arch with 51 | CS_INFO_X86 x86 -> ( 52 print_string_hex "\tPrefix: " x86.prefix; 53 54 (* print instruction's opcode *) 55 print_string_hex "\tOpcode: " x86.opcode; 56 57 (* print operand's size, address size, displacement size & immediate size *) 58 printf "\taddr_size: %u\n" x86.addr_size; 59 60 (* print modRM byte *) 61 printf "\tmodrm: 0x%x\n" x86.modrm; 62 63 (* print displacement value *) 64 if x86.disp != 0 then 65 printf "\tdisp: 0x%x\n" x86.disp; 66 67 (* SIB is invalid in 16-bit mode *) 68 if not (List.mem CS_MODE_16 mode) then ( 69 (* print SIB byte *) 70 printf "\tsib: 0x%x\n" x86.sib; 71 72 (* print sib index/scale/base (if applicable) *) 73 if x86.sib_index != _X86_REG_INVALID then 74 printf "\tsib_index: %s, sib_scale: %u, sib_base: %s\n" 75 (cs_reg_name handle x86.sib_index) 76 x86.sib_scale 77 (cs_reg_name handle x86.sib_base); 78 ); 79 80 (* print all operands info (type & value) *) 81 if (Array.length x86.operands) > 0 then ( 82 printf "\top_count: %d\n" (Array.length x86.operands); 83 Array.iteri (print_op handle) x86.operands; 84 ); 85 printf "\n"; 86 ); 87 | _ -> (); 88 ;; 89 90 91let print_insn handle mode insn = 92 printf "0x%x\t%s\t%s\n" insn.address insn.mnemonic insn.op_str; 93 print_detail handle mode insn 94 95 96let print_arch x = 97 let (arch, mode, code, comment, syntax) = x in 98 let handle = cs_open arch mode in ( 99 if syntax != 0L then ( 100 let err = cs_option handle CS_OPT_SYNTAX syntax in 101 match err with 102 | _ -> (); 103 ); 104 let err = cs_option handle CS_OPT_DETAIL _CS_OPT_ON in 105 match err with 106 | _ -> (); 107 let insns = cs_disasm handle code 0x1000L 0L in ( 108 printf "*************\n"; 109 printf "Platform: %s\n" comment; 110 List.iter (print_insn handle mode) insns; 111 ); 112 match cs_close handle with 113 | 0 -> (); 114 | _ -> printf "Failed to close handle"; 115 );; 116 117List.iter print_arch all_tests;; 118