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unpacking patch pkg files

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This commit is contained in:
Martins Mozeiko
2017-10-26 01:04:21 -07:00
parent 6a880595cc
commit cb087b8130
2 changed files with 70 additions and 19 deletions
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pkg2zip.c
+67 -16
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@@ -20,7 +20,7 @@ static const uint8_t pkg_vita_4[] = { 0xaf, 0x07, 0xfd, 0x59, 0x65, 0x25, 0x27,
// 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, char* min_version)
static void parse_sfo(sys_file f, uint64_t sfo_offset, uint32_t sfo_size, int* patch, char* title, char* content, char* min_version, char* pkg_version)
{
uint8_t sfo[16 * 1024];
if (sfo_size < 16)
@@ -44,15 +44,17 @@ static void parse_sfo(sys_file f, uint64_t sfo_offset, uint32_t sfo_size, char*
int title_index = -1;
int content_index = -1;
int category_index = -1;
int minver_index = -1;
for (uint32_t i=0; i<count; i++)
int pkgver_index = -1;
for (uint32_t i = 0; i < count; i++)
{
if (i*16 + 20 + 2 > sfo_size)
if (i * 16 + 20 + 2 > sfo_size)
{
fatal("ERROR: sfo information is too small\n");
}
char* key = (char*)sfo + keys + get16le(sfo + i*16 + 20);
char* key = (char*)sfo + keys + get16le(sfo + i * 16 + 20);
if (strcmp(key, "TITLE") == 0)
{
if (title_index < 0)
@@ -68,18 +70,26 @@ static void parse_sfo(sys_file f, uint64_t sfo_offset, uint32_t sfo_size, char*
{
content_index = (int)i;
}
else if (strcmp(key, "CATEGORY") == 0)
{
category_index = (int)i;
}
else if (strcmp(key, "PSP2_DISP_VER") == 0)
{
minver_index = (int)i;
}
else if (strcmp(key, "APP_VER") == 0)
{
pkgver_index = (int)i;
}
}
if (title_index < 0 || content_index < 0)
if (title_index < 0 || content_index < 0 || category_index < 0)
{
fatal("ERROR: sfo information doesn't have game title or content id, pkg is probably corrupted\n");
}
const char* value = (char*)sfo + values + get32le(sfo + title_index*16 + 20 + 12);
char* value = (char*)sfo + values + get32le(sfo + title_index*16 + 20 + 12);
size_t i;
size_t max = 255;
for (i=0; i<max && *value; i++, value++)
@@ -111,6 +121,17 @@ static void parse_sfo(sys_file f, uint64_t sfo_offset, uint32_t sfo_size, char*
}
*content = 0;
char* category = value = (char*)sfo + values + get32le(sfo + category_index * 16 + 20 + 12);
while (*value++)
{
}
*value = 0;
if (strcmp(category, "gp") == 0)
{
*patch = 1;
}
value = (char*)sfo + values + get32le(sfo + minver_index * 16 + 20 + 12);
if (*value == '0')
{
@@ -128,6 +149,17 @@ static void parse_sfo(sys_file f, uint64_t sfo_offset, uint32_t sfo_size, char*
{
*min_version = 0;
}
value = (char*)sfo + values + get32le(sfo + pkgver_index * 16 + 20 + 12);
if (*value == '0')
{
value++;
}
while (*value)
{
*pkg_version++ = *value++;
}
*pkg_version = 0;
}
static const char* get_region(const char* id)
@@ -257,7 +289,10 @@ int main(int argc, char* argv[])
char content[256];
char title[256];
char min_version[256];
parse_sfo(pkg, sfo_offset, sfo_size, title, content, min_version);
char pkg_version[256];
int patch = 0;
parse_sfo(pkg, sfo_offset, sfo_size, &patch, title, content, min_version, pkg_version);
const char* id = content + 7;
const char* id2 = id + 13;
@@ -278,6 +313,11 @@ int main(int argc, char* argv[])
snprintf(path, sizeof(path), "%s [%.9s] [%s] [DLC].zip", title, id, get_region(id));
printf("[*] unpacking DLC\n");
}
else if (patch)
{
snprintf(path, sizeof(path), "%s [%.9s] [%s] [PATCH] [v%s].zip", title, id, get_region(id), pkg_version);
printf("[*] unpacking PATCH\n");
}
else
{
snprintf(path, sizeof(path), "%s [%.9s] [%s].zip", title, id, get_region(id));
@@ -300,6 +340,14 @@ int main(int argc, char* argv[])
snprintf(path, sizeof(path), "addcont/%.9s/%s/", id, id2);
zip_add_folder(&z, path);
}
else if (patch)
{
snprintf(path, sizeof(path), "patch/");
zip_add_folder(&z, path);
snprintf(path, sizeof(path), "patch/%.9s/", id);
zip_add_folder(&z, path);
}
else
{
snprintf(path, sizeof(path), "app/");
@@ -314,6 +362,10 @@ int main(int argc, char* argv[])
{
snprintf(root, sizeof(root), "addcont/%.9s/%s", id, id2);
}
else if (patch)
{
snprintf(root, sizeof(root), "patch/%.9s", id);
}
else
{
snprintf(root, sizeof(root), "app/%.9s", id);
@@ -350,14 +402,6 @@ int main(int argc, char* argv[])
aes128_ctr_xor(&key, iv, name_offset / 16, (uint8_t*)name, name_size);
name[name_size] = 0;
int decrypt = 1;
if (strcmp("sce_sys/package/digs.bin", name) == 0)
{
snprintf(name, sizeof(name), "%s", "sce_sys/package/body.bin");
decrypt = 0;
}
printf("[%u/%u] %s\n", item_index + 1, item_count, name);
if (flags == 4 || flags == 18)
@@ -368,6 +412,13 @@ int main(int argc, char* argv[])
}
else
{
int decrypt = 1;
if (strcmp("sce_sys/package/digs.bin", name) == 0)
{
snprintf(name, sizeof(name), "%s", "sce_sys/package/body.bin");
decrypt = 0;
}
snprintf(path, sizeof(path), "%s/%s", root, name);
uint64_t offset = data_offset;
@@ -433,7 +484,7 @@ int main(int argc, char* argv[])
zip_end_file(&z);
}
if (argc == 3)
if (argc == 3 && !patch)
{
printf("[*] creating fake rif license\n");
snprintf(path, sizeof(path), "%s/sce_sys/package/work.bin", root);