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User:Remark/dec-flipbook.c (view source)
Revision as of 00:56, 16 August 2009
, 00:56, 16 August 2009New page: <source lang="c"> // dec_flipbook // written by remark // thanks to steven & ludo #include <stdio.h> #include <stdlib.h> // misses last 5 bytes atm char key [0x40] = { 0xF7, 0x4C, 0x6A, ...
<source lang="c">
// dec_flipbook
// written by remark
// thanks to steven & ludo
#include <stdio.h>
#include <stdlib.h>
// misses last 5 bytes atm
char key [0x40] = {
0xF7, 0x4C, 0x6A, 0x3A, 0xFB, 0x82, 0xA6, 0x37, 0x6E, 0x11, 0x38, 0xCF, 0xA0, 0xDD, 0x85, 0xC0,
0xC7, 0x9B, 0xC4, 0xD8, 0xDD, 0x28, 0x8A, 0x87, 0x53, 0x20, 0xEE, 0xE0, 0x0B, 0xEB, 0x43, 0xA0,
0xDB, 0x55, 0x0F, 0x75, 0x36, 0x37, 0xEB, 0x35, 0x6A, 0x34, 0x7F, 0xB5, 0x0F, 0x99, 0xF7, 0xEF,
0x43, 0x25, 0xCE, 0xA0, 0x29, 0x46, 0xD9, 0xD4, 0x4D, 0xBB, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00
};
#define ERR(x ...) { printf(x); exit(1); }
#define PERR(x) { perror(x); exit(1); }
int fsize(FILE *f)
{
int pos = ftell (f);
fseek (f, 0, SEEK_END);
int end = ftell (f);
fseek (f, pos, SEEK_SET);
return end;
}
int main(int argc, char* argv[])
{
if(argc != 3)
{
printf("usage: %s <file_in> <file_out>\n", argv[0]);
return 0;
}
FILE* f = fopen(argv[1], "rb");
if(f == NULL)
PERR("fopen");
int len = fsize(f);
char* buf = malloc(len);
if(buf == NULL)
PERR("malloc");
if(fread(buf,len,1,f) != 1)
PERR("fread");
int i;
for(i=0; i<len; i++)
{
buf[i] ^= key[i%0x40];
}
FILE* fout = fopen(argv[2], "wb+");
if(fout == NULL)
PERR("fopen");
if(fwrite(buf, len, 1, fout) != 1)
PERR("fwrite");
free(buf);
fclose(f);
fclose(fout);
return 0;
}
</source>
// dec_flipbook
// written by remark
// thanks to steven & ludo
#include <stdio.h>
#include <stdlib.h>
// misses last 5 bytes atm
char key [0x40] = {
0xF7, 0x4C, 0x6A, 0x3A, 0xFB, 0x82, 0xA6, 0x37, 0x6E, 0x11, 0x38, 0xCF, 0xA0, 0xDD, 0x85, 0xC0,
0xC7, 0x9B, 0xC4, 0xD8, 0xDD, 0x28, 0x8A, 0x87, 0x53, 0x20, 0xEE, 0xE0, 0x0B, 0xEB, 0x43, 0xA0,
0xDB, 0x55, 0x0F, 0x75, 0x36, 0x37, 0xEB, 0x35, 0x6A, 0x34, 0x7F, 0xB5, 0x0F, 0x99, 0xF7, 0xEF,
0x43, 0x25, 0xCE, 0xA0, 0x29, 0x46, 0xD9, 0xD4, 0x4D, 0xBB, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00
};
#define ERR(x ...) { printf(x); exit(1); }
#define PERR(x) { perror(x); exit(1); }
int fsize(FILE *f)
{
int pos = ftell (f);
fseek (f, 0, SEEK_END);
int end = ftell (f);
fseek (f, pos, SEEK_SET);
return end;
}
int main(int argc, char* argv[])
{
if(argc != 3)
{
printf("usage: %s <file_in> <file_out>\n", argv[0]);
return 0;
}
FILE* f = fopen(argv[1], "rb");
if(f == NULL)
PERR("fopen");
int len = fsize(f);
char* buf = malloc(len);
if(buf == NULL)
PERR("malloc");
if(fread(buf,len,1,f) != 1)
PERR("fread");
int i;
for(i=0; i<len; i++)
{
buf[i] ^= key[i%0x40];
}
FILE* fout = fopen(argv[2], "wb+");
if(fout == NULL)
PERR("fopen");
if(fwrite(buf, len, 1, fout) != 1)
PERR("fwrite");
free(buf);
fclose(f);
fclose(fout);
return 0;
}
</source>