mirror of https://github.com/x64dbg/zydis
107 lines
4.0 KiB
C
107 lines
4.0 KiB
C
/***************************************************************************************************
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Zyan Disassembler Engine (Zydis)
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Original Author : Florian Bernd, Joel Höner
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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***************************************************************************************************/
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#include <stddef.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <Zydis/Zydis.h>
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/* ============================================================================================== */
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/* Entry point */
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/* ============================================================================================== */
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int main(int argc, char** argv)
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{
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if (argc < 1 || argc > 2)
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{
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fprintf(stderr, "Usage: %s [input file]\n", (argc > 0 ? argv[0] : "ZydisDisasm"));
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return EXIT_FAILURE;
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}
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FILE* file = argc >= 2 ? fopen(argv[1], "rb") : stdin;
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if (!file)
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{
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fprintf(stderr, "Can not open file: %s\n", strerror(errno));
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return EXIT_FAILURE;
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}
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ZydisInstructionFormatter formatter;
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if (!ZYDIS_SUCCESS(ZydisFormatterInitInstructionFormatterEx(&formatter,
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ZYDIS_FORMATTER_STYLE_INTEL, ZYDIS_FMTFLAG_FORCE_SEGMENTS | ZYDIS_FMTFLAG_FORCE_OPERANDSIZE,
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ZYDIS_FORMATTER_ADDR_ABSOLUTE, ZYDIS_FORMATTER_DISP_DEFAULT, ZYDIS_FORMATTER_IMM_DEFAULT)))
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{
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fputs("Failed to initialized instruction-formatter\n", stderr);
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return EXIT_FAILURE;
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}
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ZydisInstructionDecoder decoder;
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if (!ZYDIS_SUCCESS(ZydisDecoderInitInstructionDecoder(&decoder, ZYDIS_DISASSEMBLER_MODE_64BIT)))
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{
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fputs("Failed to initialize instruction-decoder\n", stderr);
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return EXIT_FAILURE;
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}
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uint8_t readBuf[ZYDIS_MAX_INSTRUCTION_LENGTH * 1024];
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size_t numBytesRead;
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do
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{
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numBytesRead = fread(readBuf, 1, sizeof(readBuf), file);
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ZydisInstructionInfo info;
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ZydisStatus status;
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size_t readOffs = 0;
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while ((status = ZydisDecoderDecodeInstruction(
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&decoder, readBuf + readOffs, numBytesRead - readOffs, &info
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)) != ZYDIS_STATUS_NO_MORE_DATA)
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{
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if (!ZYDIS_SUCCESS(status))
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{
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++decoder.instructionPointer;
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++readOffs;
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printf("db %02X\n", info.data[0]);
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continue;
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}
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char printBuffer[256];
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ZydisFormatterFormatInstruction(&formatter, &info, printBuffer, sizeof(printBuffer));
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puts(printBuffer);
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readOffs += info.length;
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}
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if (readOffs < sizeof(readBuf))
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{
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memmove(readBuf, readBuf + readOffs, sizeof(readBuf) - readOffs);
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}
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} while (numBytesRead == sizeof(readBuf));
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return 0;
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}
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/* ============================================================================================== */
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