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zeventig.c
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zeventig.c
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// Copyright 2007,2008 Segher Boessenkool <segher@kernel.crashing.org>
// Licensed under the terms of the GNU GPL, version 2
// http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include "tools.h"
#define ERROR(s) do { fprintf(stderr, s "\n"); exit(1); } while (0)
static FILE *fp;
static u8 *get_wad(u32 len)
{
u32 rounded_len;
u8 *p;
rounded_len = round_up(len, 0x40);
p = malloc(rounded_len);
if (p == 0)
fatal("malloc");
if (len)
if (fread(p, rounded_len, 1, fp) != 1)
fatal("get_wad read, len = %x", len);
return p;
}
//static void do_backup_header(void)
//{
// u8 header[0x80];
//
// fread(header, 1, sizeof header, fp);
//
// if (be32(header + 4) != 0x426b0001)
// ERROR("no Bk header");
// if (be32(header) != 0x70)
// ERROR("wrong Bk header size");
//
// fprintf(stderr, "NG id: %08x\n", be32(header + 8));
//
// n_files = be32(header + 0x0c);
// files_size = be32(header + 0x10);
// total_size = be32(header + 0x1c);
//
// fprintf(stderr, "%d files\n", n_files);
//}
static void do_app_file(u8 *app, u32 app_len, u8 *tik, u8 *tmd)
{
u8 title_key[16];
u8 iv[16];
u32 i;
u8 *p;
u32 len;
u32 rounded_len;
u32 num_contents;
u32 cid;
u16 index;
u16 type;
char name[17];
FILE *fp;
decrypt_title_key(tik, title_key);
sprintf(name, "%016llx", be64(tmd + 0x018c));
if (mkdir(name, 0777))
fatal("mkdir %s", name);
if (chdir(name))
fatal("chdir %s", name);
num_contents = be16(tmd + 0x01de);
p = app;
for (i = 0; i < num_contents; i++) {
cid = be32(tmd + 0x01e4 + 0x24*i);
index = be16(tmd + 0x01e8 + 0x24*i);
type = be16(tmd + 0x01ea + 0x24*i);
len = be64(tmd + 0x01ec + 0x24*i);
rounded_len = round_up(len, 0x40);
fprintf(stderr, "--- cid=%08x index=%04x type=%04x len=%08x\n",
cid, index, type, len);
memset(iv, 0, sizeof iv);
memcpy(iv, tmd + 0x01e8 + 0x24*i, 2);
aes_cbc_dec(title_key, iv, p, rounded_len, p);
sprintf(name, "%08x.app", index);
fp = fopen(name, "wb");
if (fp == 0)
fatal("open %s", name);
if (fwrite(p, len, 1, fp) != 1)
fatal("write %s", name);
fclose(fp);
p += rounded_len;
}
if (chdir(".."))
fatal("chdir ..");
}
static void do_install_wad(u8 *header)
{
u32 header_len;
u32 cert_len;
u32 tik_len;
u32 tmd_len;
u32 app_len;
u32 trailer_len;
u8 *cert;
u8 *tik;
u8 *tmd;
u8 *app;
u8 *trailer;
u32 ret;
header_len = be32(header);
if (header_len != 0x20)
fatal("bad install header length (%x)", header_len);
cert_len = be32(header + 8);
// 0 = be32(header + 0x0c);
tik_len = be32(header + 0x10);
tmd_len = be32(header + 0x14);
app_len = be32(header + 0x18);
trailer_len = be32(header + 0x1c);
cert = get_wad(cert_len);
tik = get_wad(tik_len);
tmd = get_wad(tmd_len);
app = get_wad(app_len);
trailer = get_wad(trailer_len);
fprintf(stderr, "ticket:\n");
hexdump(tik, tik_len);
fprintf(stderr, "tmd:\n");
dump_tmd(tmd);
fprintf(stderr, "cert chain:\n");
hexdump(cert, cert_len);
ret = check_cert_chain(tik, tik_len, cert, cert_len);
if (ret)
fprintf(stderr, "ticket cert failure (%d)\n", ret);
ret = check_cert_chain(tmd, tmd_len, cert, cert_len);
if (ret)
fprintf(stderr, "tmd cert failure (%d)\n", ret);
do_app_file(app, app_len, tik, tmd);
}
static void do_wad(void)
{
u8 header[0x80];
u32 header_len;
u32 header_type;
if (fread(header, 0x40, 1, fp) != 1) {
if (!feof(fp))
fatal("reading wad header");
else
return;
}
header_len = be32(header);
if (header_len >= 0x80)
ERROR("wad header too big\n");
if (header_len >= 0x40)
if (fread(header + 0x40, 0x40, 1, fp) != 1)
fatal("reading wad header (2)");
fprintf(stderr, "wad header:\n");
hexdump(header, header_len);
header_type = be32(header + 4);
switch (header_type) {
case 0x49730000:
do_install_wad(header);
break;
case 0x69620000:
do_install_wad(header);
break;
default:
fatal("unknown header type %08x", header_type);
}
}
int main(int argc, char **argv)
{
fp = fopen(argv[1], "rb");
while (!feof(fp))
do_wad();
fclose(fp);
return 0;
}