Kubagert's dev[b]log

 
#include <stdio.h>
#include <stdlib.h>
#include <vector>
 
struct SFile
{
	int filenameLen;
	char fileName[256];
	int offset;
	int fileLen;
};
 
char cryptoTab[]=
{
	0x0C,
	0x0D,
	0x0E,
	0x0F,
 
	0x08,
	0x09,
	0x0A,
	0x0B,
 
	0x04,
	0x05,
	0x06,
	0x07,
 
	0x00,
	0x01,
	0x02,
	0x03,
};
 
 
 
void CryptoBuff( char *buff, int bufLen )
{
 
	for(int a=0; a<bufLen; a++)
	{
		char msb=(buff[a] & 0xF0)>>4;
		char lsb=(buff[a] & 0x0F);
 
		buff[a]=(cryptoTab[msb]<<4) | cryptoTab[lsb];
 
 
	}
}
 
void DepackFile( const char *fileName )
{
	FILE *f=fopen(fileName,"rb");
 
	if(!f)
		return;
 
 
	char temp[4];
	fread( temp, 1, 4, f);
 
	int filesCount=0;
	fread( &filesCount, sizeof(int), 1, f);
 
	std::vector<SFile> files;
 
	for(int a=0; a<filesCount; a++)
	{
		SFile file;
		fread( &file.filenameLen, sizeof(int), 1, f);
		fread( file.fileName, sizeof(char), file.filenameLen, f);
		file.fileName[file.filenameLen]=0;
 
		fread( &file.offset, sizeof(int), 1, f);
		fread( &file.fileLen, sizeof(int), 1, f);
 
		files.push_back(file);
	}
 
	int startOffset=ftell( f );
 
	for(int a=0; a<files.size(); a++)
	{
		fseek( f, files[a].offset+startOffset, SEEK_SET );
 
		for(int n=0; n<strlen(files[a].fileName); n++)
			if(files[a].fileName[n]=='/')
				files[a].fileName[n]='.';
 
		printf("\nProcess file: %s ", files[a].fileName );
		FILE *nf=fopen( files[a].fileName, "wb" );
		char *tempBuff=new char[files[a].fileLen];
		fread( tempBuff, 1, files[a].fileLen, f );
 
		CryptoBuff( tempBuff, files[a].fileLen );
 
		fwrite( tempBuff, 1, files[a].fileLen, nf);
		fclose(nf);
	}
 
	fclose(f);
}
 
int main(int argc, char *argv[])
{
	for(int a=1; a<argc; a++)
		DepackFile( argv[a] );
 
 
 
	printf("\n");
	system("PAUSE");
 
	return 0;
}