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nim静态编译capstone示例代码

时间：2024-02-10 11:44:19浏览次数：20  
标签：case return X86 nim 示例 EFLAGS capstone printf x86

capstone.c代码：

/* Capstone Disassembler Engine */
/* By Nguyen Anh Quynh <[email protected]>, 2013 */

#include <stdio.h>
#include <stdlib.h>

#include <capstone/capstone.h>
#include <capstone/platform.h>

static csh handle;

struct platform
{
  cs_arch arch;
  cs_mode mode;
  unsigned char *code;
  size_t size;
  const char *comment;
  cs_opt_type opt_type;
  cs_opt_value opt_value;
};

static void print_string_hex(const char *comment, unsigned char *str,
                             size_t len)
{
  unsigned char *c;

  printf("%s", comment);
  for (c = str; c < str + len; c++)
  {
    printf("0x%02x ", *c & 0xff);
  }

  printf("\n");
}

static const char *get_eflag_name(uint64_t flag)
{
  switch (flag)
  {
  default:
    return NULL;
  case X86_EFLAGS_UNDEFINED_OF:
    return "UNDEF_OF";
  case X86_EFLAGS_UNDEFINED_SF:
    return "UNDEF_SF";
  case X86_EFLAGS_UNDEFINED_ZF:
    return "UNDEF_ZF";
  case X86_EFLAGS_MODIFY_AF:
    return "MOD_AF";
  case X86_EFLAGS_UNDEFINED_PF:
    return "UNDEF_PF";
  case X86_EFLAGS_MODIFY_CF:
    return "MOD_CF";
  case X86_EFLAGS_MODIFY_SF:
    return "MOD_SF";
  case X86_EFLAGS_MODIFY_ZF:
    return "MOD_ZF";
  case X86_EFLAGS_UNDEFINED_AF:
    return "UNDEF_AF";
  case X86_EFLAGS_MODIFY_PF:
    return "MOD_PF";
  case X86_EFLAGS_UNDEFINED_CF:
    return "UNDEF_CF";
  case X86_EFLAGS_MODIFY_OF:
    return "MOD_OF";
  case X86_EFLAGS_RESET_OF:
    return "RESET_OF";
  case X86_EFLAGS_RESET_CF:
    return "RESET_CF";
  case X86_EFLAGS_RESET_DF:
    return "RESET_DF";
  case X86_EFLAGS_RESET_IF:
    return "RESET_IF";
  case X86_EFLAGS_TEST_OF:
    return "TEST_OF";
  case X86_EFLAGS_TEST_SF:
    return "TEST_SF";
  case X86_EFLAGS_TEST_ZF:
    return "TEST_ZF";
  case X86_EFLAGS_TEST_PF:
    return "TEST_PF";
  case X86_EFLAGS_TEST_CF:
    return "TEST_CF";
  case X86_EFLAGS_RESET_SF:
    return "RESET_SF";
  case X86_EFLAGS_RESET_AF:
    return "RESET_AF";
  case X86_EFLAGS_RESET_TF:
    return "RESET_TF";
  case X86_EFLAGS_RESET_NT:
    return "RESET_NT";
  case X86_EFLAGS_PRIOR_OF:
    return "PRIOR_OF";
  case X86_EFLAGS_PRIOR_SF:
    return "PRIOR_SF";
  case X86_EFLAGS_PRIOR_ZF:
    return "PRIOR_ZF";
  case X86_EFLAGS_PRIOR_AF:
    return "PRIOR_AF";
  case X86_EFLAGS_PRIOR_PF:
    return "PRIOR_PF";
  case X86_EFLAGS_PRIOR_CF:
    return "PRIOR_CF";
  case X86_EFLAGS_PRIOR_TF:
    return "PRIOR_TF";
  case X86_EFLAGS_PRIOR_IF:
    return "PRIOR_IF";
  case X86_EFLAGS_PRIOR_DF:
    return "PRIOR_DF";
  case X86_EFLAGS_TEST_NT:
    return "TEST_NT";
  case X86_EFLAGS_TEST_DF:
    return "TEST_DF";
  case X86_EFLAGS_RESET_PF:
    return "RESET_PF";
  case X86_EFLAGS_PRIOR_NT:
    return "PRIOR_NT";
  case X86_EFLAGS_MODIFY_TF:
    return "MOD_TF";
  case X86_EFLAGS_MODIFY_IF:
    return "MOD_IF";
  case X86_EFLAGS_MODIFY_DF:
    return "MOD_DF";
  case X86_EFLAGS_MODIFY_NT:
    return "MOD_NT";
  case X86_EFLAGS_MODIFY_RF:
    return "MOD_RF";
  case X86_EFLAGS_SET_CF:
    return "SET_CF";
  case X86_EFLAGS_SET_DF:
    return "SET_DF";
  case X86_EFLAGS_SET_IF:
    return "SET_IF";
  }
}

static const char *get_fpu_flag_name(uint64_t flag)
{
  switch (flag)
  {
  default:
    return NULL;
  case X86_FPU_FLAGS_MODIFY_C0:
    return "MOD_C0";
  case X86_FPU_FLAGS_MODIFY_C1:
    return "MOD_C1";
  case X86_FPU_FLAGS_MODIFY_C2:
    return "MOD_C2";
  case X86_FPU_FLAGS_MODIFY_C3:
    return "MOD_C3";
  case X86_FPU_FLAGS_RESET_C0:
    return "RESET_C0";
  case X86_FPU_FLAGS_RESET_C1:
    return "RESET_C1";
  case X86_FPU_FLAGS_RESET_C2:
    return "RESET_C2";
  case X86_FPU_FLAGS_RESET_C3:
    return "RESET_C3";
  case X86_FPU_FLAGS_SET_C0:
    return "SET_C0";
  case X86_FPU_FLAGS_SET_C1:
    return "SET_C1";
  case X86_FPU_FLAGS_SET_C2:
    return "SET_C2";
  case X86_FPU_FLAGS_SET_C3:
    return "SET_C3";
  case X86_FPU_FLAGS_UNDEFINED_C0:
    return "UNDEF_C0";
  case X86_FPU_FLAGS_UNDEFINED_C1:
    return "UNDEF_C1";
  case X86_FPU_FLAGS_UNDEFINED_C2:
    return "UNDEF_C2";
  case X86_FPU_FLAGS_UNDEFINED_C3:
    return "UNDEF_C3";
  case X86_FPU_FLAGS_TEST_C0:
    return "TEST_C0";
  case X86_FPU_FLAGS_TEST_C1:
    return "TEST_C1";
  case X86_FPU_FLAGS_TEST_C2:
    return "TEST_C2";
  case X86_FPU_FLAGS_TEST_C3:
    return "TEST_C3";
  }
}

static void print_insn_detail(csh ud, cs_mode mode, cs_insn *ins)
{
  int count, i;
  cs_x86 *x86;
  cs_regs regs_read, regs_write;
  uint8_t regs_read_count, regs_write_count;

  // detail can be NULL on "data" instruction if SKIPDATA option is turned ON
  if (ins->detail == NULL)
    return;

  x86 = &(ins->detail->x86);

  print_string_hex("\tPrefix:", x86->prefix, 4);

  print_string_hex("\tOpcode:", x86->opcode, 4);

  printf("\trex: 0x%x\n", x86->rex);

  printf("\taddr_size: %u\n", x86->addr_size);
  printf("\tmodrm: 0x%x\n", x86->modrm);
  if (x86->encoding.modrm_offset != 0)
  {
    printf("\tmodrm_offset: 0x%x\n", x86->encoding.modrm_offset);
  }

  printf("\tdisp: 0x%" PRIx64 "\n", x86->disp);
  if (x86->encoding.disp_offset != 0)
  {
    printf("\tdisp_offset: 0x%x\n", x86->encoding.disp_offset);
  }

  if (x86->encoding.disp_size != 0)
  {
    printf("\tdisp_size: 0x%x\n", x86->encoding.disp_size);
  }

  // SIB is not available in 16-bit mode
  if ((mode & CS_MODE_16) == 0)
  {
    printf("\tsib: 0x%x\n", x86->sib);
    if (x86->sib_base != X86_REG_INVALID)
      printf("\t\tsib_base: %s\n", cs_reg_name(handle, x86->sib_base));
    if (x86->sib_index != X86_REG_INVALID)
      printf("\t\tsib_index: %s\n", cs_reg_name(handle, x86->sib_index));
    if (x86->sib_scale != 0)
      printf("\t\tsib_scale: %d\n", x86->sib_scale);
  }

  // XOP code condition
  if (x86->xop_cc != X86_XOP_CC_INVALID)
  {
    printf("\txop_cc: %u\n", x86->xop_cc);
  }

  // SSE code condition
  if (x86->sse_cc != X86_SSE_CC_INVALID)
  {
    printf("\tsse_cc: %u\n", x86->sse_cc);
  }

  // AVX code condition
  if (x86->avx_cc != X86_AVX_CC_INVALID)
  {
    printf("\tavx_cc: %u\n", x86->avx_cc);
  }

  // AVX Suppress All Exception
  if (x86->avx_sae)
  {
    printf("\tavx_sae: %u\n", x86->avx_sae);
  }

  // AVX Rounding Mode
  if (x86->avx_rm != X86_AVX_RM_INVALID)
  {
    printf("\tavx_rm: %u\n", x86->avx_rm);
  }

  // Print out all immediate operands
  count = cs_op_count(ud, ins, X86_OP_IMM);
  if (count)
  {
    printf("\timm_count: %u\n", count);
    for (i = 1; i < count + 1; i++)
    {
      int index = cs_op_index(ud, ins, X86_OP_IMM, i);
      printf("\t\timms[%u]: 0x%" PRIx64 "\n", i, x86->operands[index].imm);
      if (x86->encoding.imm_offset != 0)
      {
        printf("\timm_offset: 0x%x\n", x86->encoding.imm_offset);
      }

      if (x86->encoding.imm_size != 0)
      {
        printf("\timm_size: 0x%x\n", x86->encoding.imm_size);
      }
    }
  }

  if (x86->op_count)
    printf("\top_count: %u\n", x86->op_count);

  // Print out all operands
  for (i = 0; i < x86->op_count; i++)
  {
    cs_x86_op *op = &(x86->operands[i]);

    switch ((int)op->type)
    {
    case X86_OP_REG:
      printf("\t\toperands[%u].type: REG = %s\n", i,
             cs_reg_name(handle, op->reg));
      break;
    case X86_OP_IMM:
      printf("\t\toperands[%u].type: IMM = 0x%" PRIx64 "\n", i, op->imm);
      break;
    case X86_OP_MEM:
      printf("\t\toperands[%u].type: MEM\n", i);
      if (op->mem.segment != X86_REG_INVALID)
        printf("\t\t\toperands[%u].mem.segment: REG = %s\n", i,
               cs_reg_name(handle, op->mem.segment));
      if (op->mem.base != X86_REG_INVALID)
        printf("\t\t\toperands[%u].mem.base: REG = %s\n", i,
               cs_reg_name(handle, op->mem.base));
      if (op->mem.index != X86_REG_INVALID)
        printf("\t\t\toperands[%u].mem.index: REG = %s\n", i,
               cs_reg_name(handle, op->mem.index));
      if (op->mem.scale != 1)
        printf("\t\t\toperands[%u].mem.scale: %u\n", i, op->mem.scale);
      if (op->mem.disp != 0)
        printf("\t\t\toperands[%u].mem.disp: 0x%" PRIx64 "\n", i, op->mem.disp);
      break;
    default:
      break;
    }

    // AVX broadcast type
    if (op->avx_bcast != X86_AVX_BCAST_INVALID)
      printf("\t\toperands[%u].avx_bcast: %u\n", i, op->avx_bcast);

    // AVX zero opmask {z}
    if (op->avx_zero_opmask != false)
      printf("\t\toperands[%u].avx_zero_opmask: TRUE\n", i);

    printf("\t\toperands[%u].size: %u\n", i, op->size);

    switch (op->access)
    {
    default:
      break;
    case CS_AC_READ:
      printf("\t\toperands[%u].access: READ\n", i);
      break;
    case CS_AC_WRITE:
      printf("\t\toperands[%u].access: WRITE\n", i);
      break;
    case CS_AC_READ | CS_AC_WRITE:
      printf("\t\toperands[%u].access: READ | WRITE\n", i);
      break;
    }
  }

  // Print out all registers accessed by this instruction (either implicit or
  // explicit)
  if (!cs_regs_access(ud, ins, regs_read, &regs_read_count, regs_write,
                      &regs_write_count))
  {
    if (regs_read_count)
    {
      printf("\tRegisters read:");
      for (i = 0; i < regs_read_count; i++)
      {
        printf(" %s", cs_reg_name(handle, regs_read[i]));
      }
      printf("\n");
    }

    if (regs_write_count)
    {
      printf("\tRegisters modified:");
      for (i = 0; i < regs_write_count; i++)
      {
        printf(" %s", cs_reg_name(handle, regs_write[i]));
      }
      printf("\n");
    }
  }

  if (x86->eflags || x86->fpu_flags)
  {
    for (i = 0; i < ins->detail->groups_count; i++)
    {
      if (ins->detail->groups[i] == X86_GRP_FPU)
      {
        printf("\tFPU_FLAGS:");
        for (i = 0; i <= 63; i++)
          if (x86->fpu_flags & ((uint64_t)1 << i))
          {
            printf(" %s", get_fpu_flag_name((uint64_t)1 << i));
          }
        printf("\n");
        break;
      }
    }

    if (i == ins->detail->groups_count)
    {
      printf("\tEFLAGS:");
      for (i = 0; i <= 63; i++)
        if (x86->eflags & ((uint64_t)1 << i))
        {
          printf(" %s", get_eflag_name((uint64_t)1 << i));
        }
      printf("\n");
    }
  }

  printf("\n");
}

void test()
{
#define X86_CODE64                                                           \
  "\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"
#define X86_CODE16                                                           \
  "\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"
#define X86_CODE32                                                           \
  "\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"

  struct platform platforms[] = {
      {CS_ARCH_X86, CS_MODE_16, (unsigned char *)X86_CODE16,
       sizeof(X86_CODE16) - 1, "X86 16bit (Intel syntax)"},
      {
          CS_ARCH_X86,
          CS_MODE_32,
          (unsigned char *)X86_CODE32,
          sizeof(X86_CODE32) - 1,
          "X86 32 (AT&T syntax)",
          CS_OPT_SYNTAX,
          CS_OPT_SYNTAX_ATT,
      },
      {CS_ARCH_X86, CS_MODE_32, (unsigned char *)X86_CODE32,
       sizeof(X86_CODE32) - 1, "X86 32 (Intel syntax)"},
      {CS_ARCH_X86, CS_MODE_64, (unsigned char *)X86_CODE64,
       sizeof(X86_CODE64) - 1, "X86 64 (Intel syntax)"},
  };

  uint64_t address = 0x1000;
  cs_insn *insn;
  int i;
  size_t count;

  for (i = 0; i < sizeof(platforms) / sizeof(platforms[0]); i++)
  {
    cs_err err = cs_open(platforms[i].arch, platforms[i].mode, &handle);
    if (err)
    {
      printf("Failed on cs_open() with error returned: %u\n", err);
      abort();
    }

    if (platforms[i].opt_type)
      cs_option(handle, platforms[i].opt_type, platforms[i].opt_value);

    cs_option(handle, CS_OPT_DETAIL, CS_OPT_ON);

    count = cs_disasm(handle, platforms[i].code, platforms[i].size, address, 0,
                      &insn);
    if (count)
    {
      size_t j;

      printf("****************\n");
      printf("Platform: %s\n", platforms[i].comment);
      print_string_hex("Code:", platforms[i].code, platforms[i].size);
      printf("Disasm:\n");

      for (j = 0; j < count; j++)
      {
        printf("0x%" PRIx64 ":\t%s\t%s\n", insn[j].address, insn[j].mnemonic,
               insn[j].op_str);
        print_insn_detail(handle, platforms[i].mode, &insn[j]);
      }
      printf("0x%" PRIx64 ":\n", insn[j - 1].address + insn[j - 1].size);

      // free memory allocated by cs_disasm()
      cs_free(insn, count);
    }
    else
    {
      printf("****************\n");
      printf("Platform: %s\n", platforms[i].comment);
      print_string_hex("Code:", platforms[i].code, platforms[i].size);
      printf("ERROR: Failed to disasm given code!\n");
      abort();
    }

    printf("\n");

    cs_close(&handle);
  }
}

capstone_main.nim代码：

{.passC: "-I$HOME/src/capstone/include".}
{.passL: "-L$HOME/src/capstone -lcapstone -static".}
{.compile: "capstone.c".}
proc test(): void {.importc.}

if isMainModule:
  test()

编译：

nim c -d:release capstone_main.nim

标签：case,return,X86,nim,示例,EFLAGS,capstone,printf,x86
From： https://www.cnblogs.com/soarowl/p/18012769

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