PSVita/pkg2zip
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unpacking DLC pkg files

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This commit is contained in:
Martins Mozeiko
2017-09-24 15:36:24 -07:00
parent 7bc0c0001f
commit 71863bb7b1
1 changed files with 118 additions and 54 deletions
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pkg2zip.c
+71 -7
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@@ -19,6 +19,8 @@ static const uint8_t pkg_vita_4[] = { 0xaf, 0x07, 0xfd, 0x59, 0x65, 0x25, 0x27,
static const uint8_t rif_header[] = { 0, 1, 0, 1, 0, 1, 0, 2, 0xef, 0xcd, 0xab, 0x89, 0x67, 0x45, 0x23, 0x01 };
// http://vitadevwiki.com/vita/System_File_Object_(SFO)_(PSF)#Internal_Structure
// https://github.com/TheOfficialFloW/VitaShell/blob/1.74/sfo.h#L29
static void parse_sfo(sys_file f, uint64_t sfo_offset, uint32_t sfo_size, char* title, char* content)
{
uint8_t sfo[16 * 1024];
@@ -37,7 +39,6 @@ static void parse_sfo(sys_file f, uint64_t sfo_offset, uint32_t sfo_size, char*
fatal("ERROR: incorrect sfo signature\n");
}
// https://github.com/TheOfficialFloW/VitaShell/blob/1.74/sfo.h#L29
uint32_t keys = get32le(sfo + 8);
uint32_t values = get32le(sfo + 12);
uint32_t count = get32le(sfo + 16);
@@ -215,6 +216,8 @@ int main(int argc, char* argv[])
meta_offset += 2 * sizeof(uint32_t) + size;
}
int dlc = content_type == 0x16; // 0x15 = APP
uint8_t main_key[16];
if (key_type == 1)
{
@@ -242,7 +245,8 @@ int main(int argc, char* argv[])
char content[256];
char title[256];
parse_sfo(pkg, sfo_offset, sfo_size, title, content);
char* id = content + 7;
const char* id = content + 7;
const char* id2 = id + 13;
char path[1024];
snprintf(path, sizeof(path), ".~%.*s.zip", 9, id);
@@ -252,11 +256,22 @@ int main(int argc, char* argv[])
zip z;
zip_create(&z, path);
if (dlc)
{
snprintf(path, sizeof(path), "addcont/");
zip_add_folder(&z, path);
snprintf(path, sizeof(path), "addcont/%.9s/", id);
zip_add_folder(&z, path);
}
else
{
snprintf(path, sizeof(path), "app/");
zip_add_folder(&z, path);
snprintf(path, sizeof(path), "app/%.9s/", id);
zip_add_folder(&z, path);
}
printf("[*] decrypting...\n");
aes128_key key;
@@ -283,7 +298,7 @@ int main(int argc, char* argv[])
if (pkg_size < enc_offset + name_offset + name_size ||
pkg_size < enc_offset + data_offset + data_size)
{
fatal("ERROR: pkg file is truncated\n");
fatal("ERROR: pkg file is too short, possible corrupted\n");
}
char name[ZIP_MAX_FILENAME];
@@ -294,16 +309,40 @@ int main(int argc, char* argv[])
printf("[%u/%u] %s\n", item_index+1, item_count, name);
if (flags == 4 || flags == 18)
{
if (dlc)
{
if (memcmp("sce_sys/package", name, name_size) == 0)
{
continue;
}
snprintf(path, sizeof(path), "addcont/%.9s/%s/%s/", id, id2, name);
}
else
{
snprintf(path, sizeof(path), "app/%.9s/%s/", id, name);
}
zip_add_folder(&z, path);
}
else if (flags <= 3 || (flags >= 14 && flags <= 17) ||
flags == 19 || flags == 21 || flags == 22)
{
if (memcmp("sce_pfs/pflist", name, name_size) != 0)
if (memcmp("sce_pfs/pflist", name, name_size) == 0)
{
continue;
}
if (dlc)
{
if (strncmp("sce_sys/package/", name, 16) == 0)
{
continue;
}
snprintf(path, sizeof(path), "addcont/%.9s/%s/%s", id, id2, name);
}
else
{
snprintf(path, sizeof(path), "app/%.9s/%s", id, name);
}
uint64_t offset = data_offset;
@@ -315,10 +354,10 @@ int main(int argc, char* argv[])
sys_read(pkg, enc_offset + offset, buffer, size);
aes128_ctr_xor(&key, iv, offset / 16, buffer, size);
if (memcmp("sce_sys/package/temp.bin", name, name_size) == 0)
{
// process data at beginning of file
if (offset == data_offset)
{
if (memcmp("sce_sys/package/temp.bin", name, name_size) == 0)
{
// https://github.com/TheOfficialFloW/NoNpDrm/blob/v1.1/src/main.c#L116
uint32_t sku_flag = get32be(buffer + 252);
@@ -336,8 +375,9 @@ int main(int argc, char* argv[])
zip_end_file(&z);
}
}
}
if (!dlc)
{
printf("[*] creating head.bin\n");
snprintf(path, sizeof(path), "app/%.9s/sce_sys/package/head.bin", id);
@@ -363,9 +403,26 @@ int main(int argc, char* argv[])
sys_read(pkg, total_size - sizeof(tail), tail, sizeof(tail));
zip_write_file(&z, tail, sizeof(tail));
zip_end_file(&z);
}
printf("[*] creating work.bin\n");
if (dlc)
{
zip_add_folder(&z, "license/");
zip_add_folder(&z, "license/addcont/");
snprintf(path, sizeof(path), "license/addcont/%.9s/", id);
zip_add_folder(&z, path);
snprintf(path, sizeof(path), "license/addcont/%.9s/%s/", id, id2);
zip_add_folder(&z, path);
snprintf(path, sizeof(path), "license/addcont/%.9s/%s/6488b73b912a753a492e2714e9b38bc7.rif", id, id2);
}
else
{
snprintf(path, sizeof(path), "app/%.9s/sce_sys/package/work.bin", id);
}
// https://github.com/TheOfficialFloW/NoNpDrm/blob/v1.1/src/main.c#L42
uint8_t work[512] = { 0 };
@@ -386,7 +443,14 @@ int main(int argc, char* argv[])
snprintf(path, sizeof(path), ".~%.*s.zip", 9, id);
char target[1024];
if (dlc)
{
snprintf(target, sizeof(target), "%s [%.9s] [%s] [DLC].zip", title, id, get_region(id));
}
else
{
snprintf(target, sizeof(target), "%s [%.9s] [%s].zip", title, id, get_region(id));
}
printf("[*] renaming to '%s'\n", target);
sys_rename(path, target);