by_gangster, можете использовать следующий код:
Код:
#include <stdio.h>
#include <Windows.h>
#include <ImageHlp.h>
#define MAX_BIN_PATCHES 100
#define MAX_LINE 17
#define CHUNK_FORMAT "%08x: %02x %02x"
typedef struct patch_chunk_s{
unsigned int offset;
unsigned char old_byte;
unsigned char new_byte;
} patch_chunk_t;
int read_chunks(char* from_file, patch_chunk_t* chunks){
char buf[MAX_LINE] = {0};
FILE* f = NULL;
int cnt = 0;
f = fopen(from_file, "r");
if ( f == NULL )
return -1;
while ( cnt < MAX_BIN_PATCHES ){
if ( fgets(buf, MAX_LINE, f) == NULL){
break;
} else if ( *buf == '\n' || buf[8] != ':' || buf[9] != ' ' || buf[12] != ' '){
continue;
} else
sscanf(buf, CHUNK_FORMAT, &chunks[cnt].offset, &chunks[cnt].old_byte, &chunks[cnt].new_byte);
cnt++;
}
return cnt;
}
void write_chunks(LOADED_IMAGE* image, patch_chunk_t* chunks, unsigned nchunks){
unsigned idx = 0;
while ( idx < nchunks )
{
if ( chunks[idx].offset > image->SizeOfImage ){
printf("0x%08X: invalid offset\n", chunks[idx].offset);
}
else if ( image->MappedAddress[chunks[idx].offset] != chunks[idx].old_byte ){
printf("0x%08X: %02X -> %02X err\n", chunks[idx].offset, chunks[idx].old_byte, chunks[idx].new_byte);
}
else {
image->MappedAddress[chunks[idx].offset] = chunks[idx].new_byte;
printf("0x%08X: %02X -> %02X ok\n", chunks[idx].offset, chunks[idx].old_byte, chunks[idx].new_byte);
}
idx++;
}
}
int main(int argc, char* argv[])
{
patch_chunk_t chunks[MAX_BIN_PATCHES] = {0};
char usage[] = {"usage: [file-to-patch] [ida-diff]\n"};
int ret = -1;
char* image_path = NULL;
char* diff_file = NULL;
unsigned nchunks = 0;
LOADED_IMAGE li;
if (argc < 3){
printf(usage);
return -1;
}
else {
image_path = argv[1];
diff_file = argv[2];
}
ret = MapAndLoad(image_path, NULL, &li, 0 /*.exe default ext.*/, 0 /*readwrite access*/ );
if ( ret == 0 ){
printf("Unable to load %s\n", image_path);
return -1;
}
else {
printf("Image %s loaded.\n",image_path);
}
ret = read_chunks(diff_file, chunks);
if ( ret > 0 ){
nchunks = ret;
printf("File %s loaded. %d chunks read.\n", diff_file, nchunks );
}
else {
printf("Unable to load %s: ", diff_file);
if ( ret == 0 )
printf("file is empty.\n");
else
printf("no access.\n");
return -1;
}
write_chunks(&li, chunks, nchunks);
ret = UnMapAndLoad(&li);
return ret;
}
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