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[mirrors/Programs.git] / misc / BinCracking / binpatcher.c

//BinPatcher 3.0\r
//by: Harvie 2oo7\r
\r
/* This code is very useful, if you are cracking software and you need\r
to share your cracks without whole binary (because of size or copyright).\r
This is simple way to patch binaries at users home.\r
Warning: You need to know some things about PE (probably) architecture to use this.\r
But there is still some automatic computing with addreses,\r
so you have to know only bit about yours binary...\r
*/\r
/*Note: this is patch used to crack free version of CPULower (remove NAG screen),\r
and you have to edit it for any file, that you want to patch.\r
*/\r
\r
#include <stdio.h>\r
#include <stdlib.h>\r
\r
int main(int argc, char *argv[])\r
{\r
  //Basic informations\r
  char file[] = "cpulower.exe";\r
  char this_file[] = "BinPatcher.exe";\r
  char title[] = "CPU Lower - NAG screen remover - patcher";\r
  char author[] = "<-Harvie 2oo7";\r
  //You can get these from debuger, disassembler, etc...:\r
  long int image_base = 0x400000; //ImageBase of binary\r
  long int section_rva = 0x1000; //Virtual addres of patched section\r
  long int section_offset = 0x400; //Offset of patched section\r
  long int size = 0, needed_size = 317440;  //Size in Bytes (Compressed size for PE compressors)\r
  \r
  //File declaration\r
  FILE *bin;\r
\r
  //Banner\r
  printf("%s\nby: %s\n\nThis will patch %s\n\n", title, author, file);\r
  \r
  //Arguments\r
  if(argc != 2) {\r
    printf("Incorrect number of arguments!!!\n");\r
    printf("Usage: %s %s\n", this_file, file);\r
    printf("You can simply Drag&Drop file \"%s\" on this (%s)\n\n", file, this_file);\r
    system("pause");\r
    return(0);    \r
          }\r
  \r
  //Size check\r
  int c;\r
  printf("Checking file size of %s...\n", argv[1]);\r
  bin = fopen(argv[1], "rb");\r
    if(bin == NULL) { printf("Error while opening %s\n", argv[1]); return 0; }\r
    while( (c = fgetc(bin)) != EOF ) {\r
      size++;\r
    }\r
  fclose(bin);\r
  printf("File size = %d B\n", size);\r
  if(size != needed_size) {\r
            printf("Incorrect file size (%d B) !!!\nContinue?\n", size);\r
            system("pause");\r
          } else {\r
            printf("File size OK!\n\n");       \r
          }\r
          \r
  //Backup\r
  char backup[1024];\r
  printf("Backuping to %s.crkbak\n", argv[1]);\r
  sprintf(backup, "copy /B /Y \"%s\" \"%s.crkbak\" > nul", argv[1], argv[1]);\r
  printf("Backup done.\n\n");\r
  system(backup);\r
  \r
  //UnCompress example for upx (Use this only if you know what it is)\r
  /*\r
  printf("Uncompressing...\n");\r
  char uncs[1024];\r
  sprintf(uncs, "upx -d \"%s\"", argv[1]);\r
  system(uncs); //THis needs upx binary\r
  printf("Uncompressed!\n\n");\r
  */\r
  \r
  //Patching\r
  long int virtual_addres = 0x437069; //Virtual addres from debuger - Example: 0x00437069\r
  unsigned char patch[] = "\x90\x90\x90\x90\x90"; //Patch to apply - Example: "\x90" (== NOP)\r
  bin = fopen(argv[1], "rb+");\r
    if(bin == NULL) { printf("Error while opening %s\n", argv[1]); return 0; }\r
  \r
  long int offset = virtual_addres - image_base - section_rva + section_offset; //Vypocitame offset v souboru\r
  printf("Patching code @ D: %d H: 0x%x\n", offset, offset);\r
  fseek(bin, offset, SEEK_SET); //Seek code\r
  fwrite(&patch, (sizeof(patch)-1), 1, bin); //Patch code\r
  \r
  //GO HOME ;}}\r
  fclose(bin);\r
  \r
  printf("File was successfully patched!!!\n\n");  \r
  system("PAUSE");	\r
  return 0;\r
}\r