Difference between revisions of "SceKernelModulemgr"

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<source lang="C">int sceKernelMountBootfsForKernel(const char *bootImagePath);</source>
  
 
=== sceKernelUmountBootfsForKernel ===
 
=== sceKernelUmountBootfsForKernel ===

Revision as of 00:53, 4 October 2019

SceKernelModulemgr is in charge of loading both user modules and kernel modules. SceSblAuthMgr facilitates the SELF decryption process and this library loads the ELF programs into memory along with linking with NIDs and relocation of ELF in position independent executables.

Module

This module exists only in non-secure world. The SELF can be found in os0:kd/modulemgr.skprx.

Known NIDs

Version Name World Privilege NID
1.69 SceKernelModulemgr Non-secure Kernel 0xAFDA75C2
3.57 SceKernelModulemgr Non-secure Kernel 0x8FDDA3C0
3.60 SceKernelModulemgr Non-secure Kernel 0x726C6635
3.65 SceKernelModulemgr Non-secure Kernel 0x781C6F50

Libraries

This module exports kernel and user libraries.

Known NIDs

Version Name World Visibility NID
1.69-3.60 SceModulemgrForKernel Non-secure Kernel 0xC445FA63
3.65 SceModulemgrForKernel Non-secure Kernel 0x92C9FFC2
1.69-3.65 SceModulemgrForDriver Non-secure Kernel 0xD4A60A52
1.69-3.65 SceModulemgr Non-secure User 0xEAED1616
3.57-3.60 SceBacktraceForDriver Non-secure Kernel 0x77CB3DD6
3.57-3.60 SceBacktrace Non-secure User 0xB07B6A3F

Types

//these types are defined in elfutils
typedef Elf32_Ehdr Elf32_Ehdr;
typedef Elf32_Phdr Elf32_Phdr;

typedef struct SCE_header
{
	uint32_t magic;                 /* 53434500 = SCE\0 */
	uint32_t version;               /* header version 3*/
	uint16_t sdk_type;              /* */
	uint16_t header_type;           /* 1 self, 2 unknown, 3 pkg */
	uint32_t metadata_offset;       /* metadata offset */
	uint64_t header_len;            /* self header length */
	uint64_t elf_filesize;          /* ELF file length */
	uint64_t self_filesize;         /* SELF file length */
	uint64_t unknown;               /* UNKNOWN */
	uint64_t self_offset;           /* SELF offset */
	uint64_t appinfo_offset;        /* app info offset */
	uint64_t elf_offset;            /* ELF #1 offset */
	uint64_t phdr_offset;           /* program header offset */
	uint64_t shdr_offset;           /* section header offset */
	uint64_t section_info_offset;   /* section info offset */
	uint64_t sceversion_offset;     /* version offset */
	uint64_t controlinfo_offset;    /* control info offset */
	uint64_t controlinfo_size;      /* control info size */
	uint64_t padding;
} SCE_header;

typedef struct SCE_appinfo
{
   uint64_t program_authority_id;                /* program authority id */
   uint32_t vendor_id;             /* vendor id */
   uint32_t self_type;             /* app type */
   uint64_t version;               /* app version */
   uint64_t padding;               /* UNKNOWN */
} SCE_appinfo;

typedef struct segment_info
{
   uint64_t offset;
   uint64_t length;
   uint64_t compression; // 1 = uncompressed, 2 = compressed
   uint64_t encryption; // 1 = encrypted, 2 = plain
} segment_info;

typedef struct self_data_buffer
{
   SCE_header sce_header;
   SCE_appinfo sce_appinfo;
   Elf32_Ehdr elf_hdr;
   
   //... data goes
   
} self_data_buffer;

typedef struct SceDecryptCtx //size is 0x30
{
   self_data_buffer* self_header; // aligned buffer - based on (buffer_unaligned). 
                                  // points at SCE_header followed by SCE_appinfo
                                  // size is usually 0x1000
   int self_header_length;
   Elf32_Ehdr* elf_ptr; // pointer constructed with elf_offset
   Elf32_Phdr* phdr_ptr; // pointer constructed with phdr_offset

   uint8_t type; // ex: 2
   uint8_t init_completed;
   uint8_t unk_12;
   uint8_t unk_13;
   
   segment_info* section_info_ptr; // pointer constructed with section_info_offset
   void* buffer_unaligned; // SELF header data - size 0x103F - raw data read from file
   int sm_ctx; // obtained with sceSblAuthMgrSmStartForKernel

   SceSblSmCommContext130* context_130;
   SceUID fd; // file descriptor of SELF file - obtained with sceIoOpenForDriver
   SceUID pid;
   uint32_t max_size;
} SceDecryptCtx;

typedef struct SceDecryptCtxGlobal // size is 0x4C
{
	uint32_t unk_0;
	uint32_t unk_4;		// ex:3
	void *module_decrypt_buff_ptr1;
	int decrypt_size;	// max 0x10000

	int unk_10;		// 0 or 1 or 2
	int unk_14;		// ex:-1
	void *module_decrypt_buff_ptr2;
	int unk_1C;		// some size

	SceDecryptCtx *decrypt_ctx;
	SceUID evid;		// SceModuleMgrSelfDecryptComm event flag
	SceUID tid;		// SceModuleMgrSelfDecrypter   thread uid
	void *unk_2C;		// ksceDeflateDecompressPartial out. memblock

	int compressed_seg_size;
	uint32_t unk_34;	// unk_2C out size?
	uint16_t segment_number;
	uint16_t unk_3A;	// ex:0xFFFF

	SceDeflatePartialInputParam cbinfo;
} SceDecryptCtxGlobal;

typedef struct SceKernelModuleName {
  char module_name[0x1C];
} SceKernelModuleName;

typedef struct {
  SceSize size;
  char versionString[0x1C];
  SceUInt version;
  SceUInt unk_24;
} SceKernelFwInfo;

typedef struct SceKernelSegmentInfo {
  SceUInt size;   //!< this structure size (0x18)
  SceUInt perms;  //!< probably rwx in low bits
  void *vaddr;    //!< address in memory
  SceUInt memsz;  //!< size in memory
  SceUInt flags;  //!< meaning unknown
  SceUInt res;    //!< unused?
} SceKernelSegmentInfo;

typedef struct SceKernelModuleInfo { // size is 0x1B8
	uint32_t size;                    //0
	SceUID UID;                       //4
	uint32_t attributes;              //8
	char name[0x1C];                  //0xC
	uint32_t unk28;                   //0x28
	void *module_start;               //0x2C
	void *module_stop;                //0x30
	void *module_exit;                //0x34
	void *exidx_start;                //0x38
	void *exidx_end;                  //0x3C
	void *unk40;                      //0x40
	void *unk44;                      //0x44
	void *tlsInit;                    //0x48
	SceSize tlsInitSize;              //0x4C
	SceSize tlsAreaSize;              //0x50
	char path[256];                   //0x54
	SceKernelSegmentInfo segments[4]; //0x58
	SceUInt type;                     //0x1B4
} SceKernelModuleInfo;

typedef struct {
  SceSize size; //!< sizeof(SceKernelSegmentInfo2) (0x14)
  int perm;
  void *vaddr;
  uint32_t memsz;
  int unk_10;
} SceKernelSegmentInfo2;

typedef struct {
  SceSize size;
  SceUID modid;
  uint32_t version;
  uint32_t module_version;
  uint32_t unk10;
  void *unk14;
  uint32_t unk18;
  void *unk1C;
  void *unk20;
  char module_name[28];
  uint32_t unk40;
  uint32_t unk44;
  uint32_t nid;
  int segments_num;
  union {
    struct {
      SceKernelSegmentInfo2 SegmentInfo[1];
      uint32_t addr[4];
    } seg1;
    struct {
      SceKernelSegmentInfo2 SegmentInfo[2];
      uint32_t addr[4];
    } seg2;
    struct {
      SceKernelSegmentInfo2 SegmentInfo[3];
      uint32_t addr[4];
    } seg3;
    struct {
      SceKernelSegmentInfo2 SegmentInfo[4];
      uint32_t addr[4];
    } seg4;
  };
} SceKernelModuleListInfo; // is for SceCoredump?

typedef struct {
  SceSize size; //!< sizeof(SceKernelModuleInfo2) : 0x120
  SceUID modid1;
  uint32_t unk_0x08;
  uint16_t unk_0x0C;
  uint16_t unk_0x0E;
  uint16_t unk_0x10;
  uint16_t unk_0x12;
  uint16_t unk_0x14;
  uint16_t unk_0x16;
  char module_name[0x100]; // offset : 0x18
  uint32_t unk_0x118;
  SceUID modid2;
} SceKernelModuleInfo2;

module decrypt threads

SceKernelModulemgr_func_8100910D

This thread keeps waiting at sceKernelWaitEventFlagForDriver until a module decrypt request comes.

bits of ksceKernelWaitEventFlag is 3.

common functions

int SceKernelModulemgr_func_81009309(SceDecryptCtx *ctx, int seg_idx, void *membase, int arg4);

Decrypt module to membase with current ctx.

Data segment layout

Offsets are for FW 3.60.

data section size is 0x203C0.

Offset Size Description
0x0000 0x34 unknown, all zero
0x0034 0x4 SceKernelFwInfo data Initialize flag
0x0038 0x4 pointer of SceClass. The first class obtained with sceKernelSysrootGetModulePrivateForKernel. used by only sceKernelFinalizeKblForKernel.
0x003C 0x4 pointer of SceClass. The third class obtained with sceKernelSysrootGetModulePrivateForKernel. SceUIDLibStubClass
0x0040 0x4 pointer of SceClass. The second class obtained with sceKernelSysrootGetModulePrivateForKernel. SceUIDLibraryClass
0x0044 0x4 Return value of SceThreadmgrForDriver_B645C7EF
0x0048 0x4 pointer of SceClass. The first class obtained with sceKernelSysrootGetModulePrivateForKernel. SceUIDModuleClass
0x004C 0x4 SceModuleMgr Mutex uid
0x0050 0x280 unknown
0x02D0 0x28 SceKernelFwInfo data
0x02F8 0x4 some thread id, check SceModulemgrForKernel_2A69385E
0x02FC 0x4 some kernel module uid, check SceModulemgrForKernel_2A69385E
0x0300 0x4 unk, used by SceModulemgrForKernel_3AD26B43
0x0304 0x4 some storage ptr. used by sceKernelMountBootfsForKernel, sceKernelUmountBootfsForKernel
0x0308 0x4 unk, used by SceModulemgrForKernel_60E176C8, SceModulemgrForKernel_9D20C9BB
0x030C 0x4 unk
0x0310 0x4 cpu_addr out (ksceKernelCpuSuspendIntr arg1)
0x0314 0x4 unk, some flag
0x0318 0x4 sceKernelGetMemBlockBaseForDriver membase out
0x031C 0x4 sceKernelAllocMemBlockForDriver ret
0x0320 0xC unk
0x032C 0x4 unk, used by SceModulemgrForKernel_F3CD647F
0x0330 0x4 unk, used by SceModulemgrForKernel_F3CD647F
0x0334 0x4 syscall table vaddr
0x0338 0x4 unk, related to syscall. used by SceKernelUtilsForDriver_875B2A1C
0x033C 0x4 unk
0x0340 0x4C SceDecryptCtxGlobal data
0x038C 0x34 unk, all zero
0x03C0 0x10000 module decrypt buff 1
0x103C0 0x10000 module decrypt buff 2 
typedef struct SceKernelModulemgr_data_t { // size is 0x203C0
	char unk_00[0x2D0]; //	unknown
	SceKernelFwInfo FwInfo;
	SceUID some_threadid;
	SceUID some_kernel_module_id;
	int unk_0x0300;
	void *bootfs_info;
	int unk_0x0308;
	int unk_0x030C;
	int cpu_addr;
	int some_flag;
	void *membase;
	SceUID memuid;
	int unk_0x0320[3];
	int unk_0x032C;
	int unk_0x0330;
	void *syscall_table;
	int some_syscall_info;
	int unk_0x033C;
	SceDecryptCtxGlobal g_decrypt_ctx;
	char unk_0x038C[0x34];
	char module_decrypt_buff1[0x10000];
	char module_decrypt_buff2[0x10000];
} SceKernelModulemgr_data_t;

Loading Sequence

When loading a module the sequence creates a SceModule structure to represent it. 

typedef struct SceModule { // ?size is 0x3EC?
    u8 unk0[0x64];          // 0x0
    const char *filename;   // 0x64
    u8 unk1[0xC];           // 0x68
    Elf32_Ehdr ehdr;        // 0x74
    Elf32_Phdr phdr;        // 0xA8
    void *text_addr;        // 0x108
    SceUID text_uid;        // 0x10C
    u32 text_size;          // 0x110
    void *kernel_addr;      // 0x114
    SceUID kernel_uid;      // 0x118
    u8 unk2[0x2C8];         // 0x11C
    SceUID parent_pid;      // 0x3E4
    SceSblSmCommContext130* context_130; // 0x3E8
} SceModule;

SELF Decryption

The following code can decrypt a SELF located at path. Set user to 1 if decrypting a user module else 0 for kernel. Set pathid to 0 if you're decrypting the SELF at the right location (for example decrypting sysmem.skprx located in os0:). If you have copied the SELF elsewhere, you need to set the pathid to the right value for where the real path was. usecdram is for modules that are too large and won't fit in contiguous regular memory. 

int decrypt_self(const char *path, const char *outprefix, int pathid, int usecdram, int user)
{
    char outpath[256];
    int ctx;
    int ret;
    int pid;
    int fd = 0, wfd = 0;
    char *somebuf = NULL;
    char *hdr_buf = NULL, *hdr_buf_aligned;
    char *data_buf = NULL, *data_buf_aligned;
    int phdr;

    unsigned int hdr_size;

    // set up SBL decrypt context
    ret = SceSblAuthMgrForKernel_0xA9CD2A09(&ctx);
    printf("SceSblAuthMgrForKernel_0xA9CD2A09: 0x%08X, CTX: 0x%08X\n", ret, ctx);
    if (ret < 0)
        return 1;

    // set up this weird buffer
    somebuf = sceKernelLoadcoreKallocForKernel(0x10005, 0x130);
    printf("Weird buffer: 0x%08X\n", somebuf);
    if (somebuf == NULL)
        goto fail;
    memset(somebuf, 0, 0x130);
    if (ret < 0)
        goto fail;
    *(int *)(somebuf + 0x4) = user;
    *(u64_t *)(somebuf + 0x8) = 0x2808000000000001LL;
    *(u64_t *)(somebuf + 0x10) = 0xF000C000000080LL;
    *(u64_t *)(somebuf + 0x18) = 0xFFFFFFFF00000000LL;
    *(u64_t *)(somebuf + 0x30) = 0xC300003800980LL;
    *(u64_t *)(somebuf + 0x38) = 0x8009800000LL;
    *(u64_t *)(somebuf + 0x48) = 0xFFFFFFFF00000000LL;

    if (pathid)
    {
        *(int *)(somebuf + 0x128) = pathid;
    }
    else
    {
        ret = SceIofilemgrForDriver_0x9C220246(0x10005, path, 1, somebuf + 0x128);
        printf("SceIofilemgrForDriver_0x9C220246: 0x%08X\n", ret);
        if (ret < 0)
            goto fail;
    }

    // read header
    fd = sceIoOpenForDriver(path, 1, 0);
    printf("sceIoOpenForDriver: 0x%08X\n", fd);
    if (fd < 0)
        goto fail;
    hdr_buf = sceKernelLoadcoreKallocForKernel(0x10005, 0x1000+63);
    hdr_buf_aligned = (char *)(((int)hdr_buf + 63) & 0xFFFFFFC0);
    printf("Header buffer: 0x%08X, aligned: 0x%08X\n", hdr_buf, hdr_buf_aligned);
    if (hdr_buf == NULL)
        goto fail;
    ret = sceIoReadForDriver(fd, hdr_buf_aligned, 0x1000);
    printf("Header read: 0x%08X\n", ret);
    hdr_size = *(unsigned int *)(hdr_buf_aligned + 0x10);
    if (hdr_size > 0x1000)
    {
        printf("Header too large: 0x%08X\n", hdr_size);
        goto fail;
    }
    ret = sceIoLseekForDriver(fd, 0LL, 0);
    printf("Header rewind: 0x%08X\n", ret);

    // set up SBL decryption for this SELF
    ret = SceSblAuthMgrForKernel_0xF3411881(ctx, hdr_buf_aligned, hdr_size, somebuf);
    printf("SceSblAuthMgrForKernel_0xF3411881: 0x%08X\n", ret);
    if (ret < 0)
    {
        goto fail;
    }

    // set up read buffer
    data_buf = sceKernelLoadcoreKallocForKernel(0x10005, 0x10000+63);
    data_buf_aligned = (char *)(((int)data_buf + 63) & 0xFFFFFFC0);
    printf("Data buffer: 0x%08X, aligned: 0x%08X\n", data_buf, data_buf_aligned);
    if (data_buf == NULL)
        goto fail;

    // get sections
    int elf_offset = *(int*)(hdr_buf_aligned + 0x40);
    int num_segs = *(short*)(hdr_buf_aligned + elf_offset + 0x2C);
    printf("Number of segments to read: 0x%04X\n", num_segs);
    int info_offset = *(int*)(hdr_buf_aligned + 0x58);
    struct seg_info *segs = (struct seg_info *)(hdr_buf_aligned + info_offset);
    int phdr_offset = *(int*)(hdr_buf_aligned + 0x48);
    struct e_phdr *phdrs = (struct e_phdr *)(hdr_buf_aligned + phdr_offset);

    // decrypt sections
    int i;
    int total, to_read, num_read, off;
    int aligned_size;
    int blkid = 0;
    void *pgr_buf;
    for (i = 0; i < num_segs; i++)
    {
        sprintf(outpath, "%s.seg%u", outprefix, i);
        sceIoCloseForDriver(wfd);
        wfd = sceIoOpenForDriver(outpath, 0x602, 6);
        printf("sceIoOpenForDriver(%s): 0x%08X\n", outpath, wfd);
        if (wfd < 0)
            break;

        if (blkid)
            sceKernelFreeMemBlockForKernel(blkid);
        aligned_size = (phdrs[i].p_filesz + 4095) & 0xFFFFF000;
        if (usecdram)
            blkid = sceKernelAllocMemBlockForKernel("self_decrypt_buffer", 0x40404006, 0x4000000, NULL);
        else
            blkid = sceKernelAllocMemBlockForKernel("self_decrypt_buffer", 0x1020D006, aligned_size, NULL);
        printf("sceKernelAllocMemBlockForKernel: 0x%08X, size: 0x%08X\n", blkid, aligned_size);
        ret = sceKernelGetMemBlockBaseForKernel(blkid, &pgr_buf);
        printf("sceKernelGetMemBlockBaseForKernel: 0x%08X, base: 0x%08X\n", ret, pgr_buf);
        if (ret < 0)
            break;

        // setup buffer for output
        ret = SceSblAuthMgrForKernel_0x89CCDA2C(ctx, i, (u32_t)segs[i].length, pgr_buf, phdrs[i].p_filesz);
        printf("SceSblAuthMgrForKernel_0x89CCDA2C: 0x%08X\n", ret);
        if (ret < 0)
        {
            break;
        }

        ret = sceIoLseekForDriver(fd, segs[i].offset, 0);
        printf("sceIoLseekForDriver(0x%08X): 0x%08X\n", (u32_t)segs[i].offset, ret);
        if (ret < 0)
            break;
        total = (u32_t)segs[i].length;
        to_read = total > 0x10000 ? 0x10000 : total;
        off = 0;
        while (total > 0 && (num_read = sceIoReadForDriver(fd, data_buf_aligned+off, to_read)) > 0)
        {
            off += num_read;
            total -= num_read;
            if (num_read < to_read)
            {
                to_read -= num_read;
                continue;
            }

            ret = SceSblAuthMgrForKernel_0xBC422443(ctx, data_buf_aligned, off); // decrypt buffer
            printf("SceSblAuthMgrForKernel_0xBC422443: 0x%08X\n", ret);
            if (ret < 0)
                printf("!!! ERROR !!!\n");
            ret = SceSblAuthMgrForKernel_0x15248FB4(ctx, data_buf_aligned, off); // copy buffer to output
            printf("SceSblAuthMgrForKernel_0x15248FB4: 0x%08X\n", ret);
            if (ret < 0)
            {
                printf("!!! ERROR !!!\n");
            }

            off = 0;
            to_read = total > 0x10000 ? 0x10000 : total;
        }

        // write buffer
        off = 0;
        while ((off += sceIoWriteForDriver(wfd, pgr_buf+off, phdrs[i].p_filesz-off)) < phdrs[i].p_filesz);
    }
    if (blkid)
        sceKernelFreeMemBlockForKernel(blkid);
    sceIoCloseForDriver(wfd);

fail:
    SceSblAuthMgrForKernel_0x026ACBAD(ctx);
    if (fd)
        sceIoCloseForDriver(fd);
    if (somebuf)
        SceModulemgrForKernel_0xF4B2D8B8_free(somebuf);
    if (hdr_buf)
        SceModulemgrForKernel_0xF4B2D8B8_free(hdr_buf);
    if (data_buf)
        SceModulemgrForKernel_0xF4B2D8B8_free(data_buf);
    return 1;
}

Module decryption and signature checks ("HENkaku patches" on 1.60)

See also SELF_Loading to see how these SceSblAuthMgr functions are used to decrypt SELFs.

The code below will patch signature checks and bypass module decryption and allow homebrews to run. The idea is to hook SceSblAuthMgr* calls that are imported to SceKernelModulemgr. The offsets are from 1.60, you will probably need to modify functions defines (set to addresses of functions) and INSTALL_HOOK second arguments (set to addresses of imports in SceKernelModulemgr). For old FWs like 1.60, as there is no kASLR, you can set hardcoded addresses, else take HENkaku code. As a bonus there's also patch_npdrm functions that patches SceNpDrm to bypass some DRM checks and allow unsigned packages to be installed, which you also need to modify addresses. See SceNpDrm#Package_integrity_checks. 

// hardcoded addresses for 1.60
#define G_OUR_EBOOT *(unsigned*)(0x01E60000 - 0x14)
#define G_BUF *(unsigned*)(0x01E60000 - 0xC)
#define G_WRITTEN *(unsigned*)(0x01E60000 - 0x10)

#define Func(addr) ((unsigned(*)())(addr))

// Hardcoded addresses for 1.60
#define sceSblAuthMgrAuthHeaderForKernel Func(0x4BC6C9)
#define sceSblAuthMgrLoadSegmentForKernel Func(0x4BC851)
#define sceSblAuthMgrLoadBlockForKernel Func(0x4BC909)
#define sceSblAuthMgrLoadSegmentInternalForKernel Func(0x4BCA89)


// setup file decryption
unsigned sceSblAuthMgrAuthHeaderForKernel_patched(unsigned a1, unsigned a2, unsigned a3, unsigned a4) {
    unsigned res = sceSblAuthMgrAuthHeaderForKernel(a1, a2, a3, a4);

    if (res == 0x800f0624 || res == 0x800f0616 || res == 0x800f0024) {
        G_OUR_EBOOT = 1;

        // patch somebuf so our module actually runs
        unsigned *somebuf = (unsigned*)a4;
        somebuf[42] = 0x40;

        return 0;
    } else {
        G_OUR_EBOOT = 0;
    }
    return res;
}

// setup output buffer
unsigned sceSblAuthMgrLoadSegmentForKernel_patched(unsigned a1, unsigned a2, unsigned a3, unsigned a4, unsigned a5) {
    G_BUF = a4;
    G_WRITTEN = 0;
    if (G_OUR_EBOOT == 1) {
        return 0;
    }
    return sceSblAuthMgrLoadSegmentForKernel(a1, a2, a3, a4, a5);
}

// decrypt
unsigned sceSblAuthMgrLoadBlockForKernel_patched(unsigned a1, unsigned a2, unsigned a3) {
    if (G_OUR_EBOOT == 1) {
        return 0;
    }
    return sceSblAuthMgrLoadBlockForKernel(a1, a2, a3);
}

// copy to output - not present on 3.60
unsigned sceSblAuthMgrLoadSegmentInternalForKernel_patched(unsigned a1, unsigned a2, unsigned a3) {
    if (G_OUR_EBOOT == 1) {
        memcpy((void*)(G_BUF + G_WRITTEN), (void*)a2, a3);
        G_WRITTEN += a3;
        return 0;
    }
    return sceSblAuthMgrLoadSegmentInternalForKernel(a1, a2, a3);
}

#define INSTALL_HOOK(func, addr) \
    { unsigned *target; \
    target = (unsigned*)addr; \
    *target++ = 0xE59FF000; /* ldr pc, [pc, #0] */ \
    *target++; /* doesn't matter */ \
    *target = (unsigned)func; \
    }

// hardcoded addresses for 1.60
void hook_install(void) {
    INSTALL_HOOK(sceSblAuthMgrLoadBlockForKernel_patched, 0x5BAA0C);
    INSTALL_HOOK(sceSblAuthMgrLoadSegmentInternalForKernel_patched, 0x5BA9CC);
    INSTALL_HOOK(sceSblAuthMgrAuthHeaderForKernel_patched, 0x5BAA1C);
    INSTALL_HOOK(sceSblAuthMgrLoadSegmentForKernel_patched, 0x5BA9DC);
}

unsigned get_module_base(const char *name) {
    int * modlist[MOD_LIST_SIZE];
    int modlist_records;
    int res;
    SceKernelModuleInfo modinfo;

    memset(modlist, 0, sizeof(modlist));
    modlist_records = MOD_LIST_SIZE;
    sceKernelGetModuleListForKernel(0x10005, 0x7FFFFFFF, 1, modlist, &modlist_records);

    for(int j = 0; j < modlist_records; j++) {
        memset(&modinfo, 0, sizeof(modinfo));
        res=sceKernelGetModuleInfoForKernel(modlist[j], &modinfo);
        if (strcmp(modinfo.name, name) == 0)
            return (unsigned)modinfo.module_top;
    }
    return 0;
}

// Hardcoded addresses for 1.60
void patch_npdrm(unsigned base) {
    unsigned *patch;
    // check where check_func[0] is called
    patch = (unsigned*)(base + 0x310);
    *patch = 0x47702001;
    // check where check_func[1] is called
    patch = (unsigned*)(base + 0xaa4);
    *patch = 0x47702001;

    // always return 1 in install_allowed
    patch = (unsigned*)(base + 0x2d64);
    *patch = 0x47702001;
    // patch error code 0x80870003
    patch = (unsigned*)(base + 0x4856);
    *patch = 0x2500;
    // second same error code
    patch = (unsigned*)(base + 0x35fe);
    *patch = 0x2600;
}

// call this from a thread
int hook(void) {
    fprintf("Hook start\n");

    unsigned prev_dacr;
    __asm__ volatile("mrc p15, 0, %0, c3, c0, 0" : "=r" (prev_dacr));
    __asm__ volatile("mcr p15, 0, %0, c3, c0, 0" : : "r" (-1));

    unsigned base_npdrm = get_module_base("SceNpDrm");
    fprintf("SceNpDrm base: 0x%08x\n", base_npdrm);
    patch_npdrm(base_npdrm);

    hook_install();

    __asm__ volatile("MCR    p15, 0, %0, c7, c5, 0" : : "r" (0)); // flush icache
    __asm__ volatile("mcr p15, 0, %0, c3, c0, 0" : : "r" (prev_dacr));

    sceKernelDelayThread(4*1000*1000);

    return 0;
}

SceModulemgrForKernel

sceModulemgrLockLibDBForKernel

Version NID
0.990 0x37C2A1A5

sceModulemgrUnlockLibDBForKernel

Version NID
0.990 0x0751F162

SceModulemgrForKernel_2C2618D9

Version NID
0.990-3.60 0x2C2618D9

Used by sceKernelPrintBacktraceForDriver. 

int SceModulemgrForKernel_2C2618D9(SceUID pid, void *a2, void *a3);

sceKernelGetModuleIdByAddrForKernel

Version NID
0.990-3.60 0x0053BA4A 
SceUID sceKernelGetModuleIdByAddrForKernel(SceUID pid, const void *module_addr);

sceKernelGetProcessEntryPointForKernel

Version NID
0.990 0xC72CA412
3.60 not present

sceKernelLoadcoreKallocForKernel

Version NID
0.990 0xB4A1DE31 
uint32_t sceKernelLoadcoreKallocForKernel(SceUID pid, uint32_t size);

sceKernelFinalizeKblForKernel

Version NID
0.990-3.60 0xFDD7F646 
void *sysroot_buffer = sceKernelGetSysrootBuffer;
kbl_modid = *(_DWORD *)(SceSysrootForKernel_CD70C9D7(sysroot_buffer) + 0x38);
sceKernelStopUnloadModuleForDriver(kbl_modid);
unk = *(_DWORD *)(SceSysrootForKernel_CD70C9D7(sysroot_buffer) + 0x34);
// then does other things with other sysroot functions

0.990 

void sceKernelFinalizeKblForKernel(void);

3.60 

int sceKernelFinalizeKblForKernel(void);

sceKernelRegisterSyscallForKernel

Version NID
3.60 0xB427025E
3.65-3.68 0x2E4A10A0 
void sceKernelRegisterSyscallForKernel(uint32_t num, void *function);

sceKernelLoadPtLoadSegForFwloaderForKernel

Version NID
0.990-3.60 0x448810D5

sceKernelDecryptSelfByPathForKernel

Version NID
0.990-3.60 0x448810D5
3.65 0xA07063EA 
int sceKernelDecryptSelfByPathForKernel(const char *path, int e_phnum, void *buffer, uint32_t bufsize, int zero_unk, uint32_t *bytes_read);

This is an easy way of decrypting SELFs but you are limited to the kinds of SELFs you can load in the current context (for example, you can't load user modules from kernel context). It is also susceptible to limitations of where the SELF can be loaded from. For example, you are not allowed to load SELFs found in os0: from ux0:. This is because it checks the PathId.

On 3.60, statically compiled self give an error.

sceKernelGetModuleListForKernel

Version NID
1.60-3.60 0x97CF7B4E 
int sceKernelGetModuleListForKernel(SceUID pid, int flags1, int flags2, SceUID *modids, size_t *num);

sceKernelGetModuleList2ForKernel

Version NID
3.60 0x410E1D2E

Found by Princess

sceKernelGetModuleUidForKernel

Version NID
3.60 0x3B93CF88

Found by Princess

sceKernelGetModuleUidListForKernel

Version NID
3.60 0x1FDEAE16

Found by Princess

sceKernelGetModuleInfoForKernel

Version NID
3.60 0xD269F915 
int sceKernelGetModuleInfoForKernel(SceUID pid, SceUID modid, SceKernelModuleInfo *info);

sceKernelGetModuleInfo2ForKernel

Version NID
3.60 0x6A655255 
int sceKernelGetModuleInfo2ForKernel(SceUID pid, SceUID modid, SceKernelModuleInfo2 *info);

sceKernelGetModuleCBForDebugger

Version NID
3.60 0xFE303863

Temp name was sceKernelGetModuleInternalForKernel. 

int sceKernelGetModuleInternalForKernel(SceUID modid, void **module);

sceKernelGetModuleLibraryInfoForKernel

Version NID
3.60 0xD4BF409C

Found by Princess

sceKernelGetProcessMainModuleForKernel

Version NID
3.60 0x20A27FA9 
/**
 * @brief Get the main module for a given process.
 * @param pid The process to query.
 * @return the UID of the module else < 0 for an error.
 */
SceUID sceKernelGetProcessMainModuleForKernel(SceUID pid);

sceKernelGetProcessMainModulePathForKernel

Version NID
3.60 0x779A1025 
int sceKernelGetProcessMainModulePathForKernel(SceUID pid, char *path, int pathlen);

sceKernelMountBootfsForKernel

Version NID
3.60 0x01360661
3.65 0x185FF1BC 
int sceKernelMountBootfsForKernel(const char *bootImagePath);

sceKernelUmountBootfsForKernel

Version NID
3.60 0x9C838A6B

sceKernelLoadModuleForPidForKernel

Version NID
3.60 0xFA21D8CB

sceKernelStartModuleForPidForKernel

Version NID
3.60 0x6DF745D5

sceKernelStopModuleForPidForKernel

Version NID
3.60 0x7BB4CE54

sceKernelUnloadModuleForPidForKernel

Version NID
3.60 0x5972E2CC

sceKernelLoadProcessModulesForKernel

Temp name was sceKernelLoadPreloadingModulesForKernel. Was wrongly named sceKernelLoadStartDefaultSharedModulesForPidForKernel.

Version NID
1.69-3.60 0x3AD26B43

This loads the default shared modules for a process (only the ones that are actually imported). This includes, for example, SceLibKernel. Modules are loaded with flags 0x10000000 meaning that text pages can be shared. If dipsw 210 is set, then flag 0x1000 is set, meaning that if the existing page is found, do not share it but instead make a copy. 

int sceKernelLoadProcessModulesForKernel(int pid, void *unk_buf, int flags);

sceKernelLoadProcessImageForKernel

Version NID
0.990-3.60 0xAC4EABDB

sceKernelUnloadProcessModulesForKernel

Temp name was sceKernelStopUnloadPreloadingModulesForKernel.

Version NID
0.990-3.60 0x0E33258E

sceKernelLoadcoreKfreeForKernel

Version NID
0.990-1.60 0xF4B2D8B8

Calls sceKernelFreeHeapMemoryForDriver.

sceKernelCallModuleSuspendEntryForKernel

Version NID
0.990 0x829E1C94

sceKernelLoadcoreRegisterSyscallsAfterBootForKernel

Version NID
0.990 0x1100A1B8

SceModulemgrForDriver

sceKernelGetModuleInfoByAddrForDriver

Version NID
0.990-3.60 0x1D9E0F7E

note : kernel only. 

int sceKernelGetModuleInfoByAddrForDriver(const void *module_addr, SceKernelModuleInfo *info);

sceKernelRegisterLibaryForDriver

Version NID
0.990-3.60 0x861638AD

note : kernel only. 

int sceKernelRegisterLibaryForDriver(const void *module_addr);

sceKernelReleaseLibaryForDriver

Version NID
0.990-3.60 0x0975B104

note : kernel only. 

int sceKernelReleaseLibaryForDriver(const void *module_addr);

sceKernelGetModuleInfoForDriver

Version NID
1.69 0x36585DAF
3.60 moved to SceModulemgrForKernel

sceKernelSearchModuleByNameForDriver

Version NID
3.60 0xBBE1771C 
SceUID sceKernelSearchModuleByNameForDriver(const char *module_name);

sceKernelGetSystemSwVersionForDriver

Version NID
0.940-3.60 0x5182E212 
int sceKernelGetSystemSwVersionForDriver(SceKernelFwInfo *data);

sceKernelSetSystemSwVersionForDriver

Version NID
1.69 0x912AEB73
3.60 non existent. Integrated with sceKernelGetSystemSwVersionForDriver

sceKernelLoadStartModuleForDriver

Version NID
1.69-3.60 0x189BFBBB 
SceUID sceKernelLoadStartModuleForDriver(const char *path, SceSize args, void *argp, int flags, SceKernelLMOption *option, int *status);

sceKernelLoadStartModuleForPidForDriver

Version NID
3.60 0x9D953C22 
SceUID sceKernelLoadStartModuleForPidForDriver(SceUID pid, const char *path, SceSize args, void *argp, int flags, SceKernelLMOption *option, int *status);

sceKernelLoadStartSharedModuleForPidForDriver

Version NID
3.60 0xE2ADEF8D 
SceUID sceKernelLoadStartSharedModuleForPidForDriver(SceUID pid, const char *path, SceSize args, void *argp, int flags, SceKernelLMOption *option, int *status);

sceKernelLoadModuleWithoutStartForDriver / sceKernelLoadModuleForDriver

Version NID
1.69-3.60 0x86D8D634 
int opt = 4; // must be set
SceUID sceKernelLoadModuleForDriver(const char *path, int flags, SceKernelLMOption *option);

Returns int modid (to use with sceKernelStartModuleForDriver).

sceKernelStartModuleForDriver

Version NID
1.69-3.60 0x0675B682 
// flags must be 0
// opt can be null
int sceKernelStartModuleForDriver(SceUID modid, SceSize args, void *argp, int flags, SceKernelLMOption *option, int *status);

sceKernelStopUnloadModuleForDriver

Version NID
1.69-3.60 0x03B30B7E 
// flags must be 0
// opt can be null
int sceKernelStopUnloadModuleForDriver(SceUID modid, SceSize args, void *argp, int flags, SceKernelULMOption *option, int *status);

sceKernelStopUnloadModuleForPidForDriver

Version NID
3.60 0x49A3EDC7 
int sceKernelStopUnloadModuleForPidForDriver(SceUID pid, SceUID modid, SceSize args, void *argp, int flags, SceKernelULMOption *option, int *status);

sceKernelStopUnloadSharedModuleForPidForDriver

Version NID
3.60 0x02D3D0C1 
int sceKernelStopUnloadSharedModuleForPidForDriver(SceUID pid, SceUID modid, SceSize args, void *argp, int flags, SceKernelULMOption *option, int *status);

sceKernelStopModuleForDriver

Version NID
1.69-3.60 0x100DAEB9 
int sceKernelStopModuleForDriver(SceUID modid, SceSize args, void *argp, int flags, SceKernelULMOption *option, int *status);

sceKernelUnloadModuleForDriver

Version NID
1.69-3.60 0x728E72A6 
// flags must be 0
int sceKernelUnloadModuleForDriver(SceUID modid, int flags, SceKernelULMOption *option);

SceModulemgr

__sceKernelLoadModuleWithoutStart

Version NID
1.69 0xA4E6DA4D
3.60 non existent

_sceKernelLoadModule

Version NID
1.69 non existent
3.60 0xB4C5EF9E

_sceKernelLoadStartModule

Version NID
1.69 non existent
3.60 0x60647592

__sceKernelStartModule

Version NID
1.69 0x1FD99C9F
3.60 non existent

_sceKernelStartModule

Version NID
1.69 non existent
3.60 0x72CD301F

__sceKernelStopModule

Version NID
1.69 0xBA49EA5C
3.60 non existent

_sceKernelStopModule

Version NID
1.69 non existent
3.60 0x086867A8

_sceKernelStopUnloadModule

Version NID
1.69 non existent
3.60 0x86EAEA0A

__sceKernelUnloadModuleWithoutStop

Version NID
1.69 0xE439E26B
3.60 non existent

_sceKernelUnloadModule

Version NID
1.69 non existent
3.60 0x8E4A7716

__sceKernelOpenModule

Version NID
0.990-1.69 0x9C2A9A49
3.60 non existent

_sceKernelOpenModule

Version NID
1.69 non existent
3.60 0x9D674F45

__sceKernelCloseModule

Version NID
1.69 0x5303C52F
3.60 non existent

_sceKernelCloseModule

Version NID
1.69 non existent
3.60 0x849E78BE

sceKernelKttyWrite

Version NID
0.940-1.69 0x4D76CF9E
3.60 non existent

sceKernelPutc

Version NID
1.69 0x9D2FE122
3.60 non existent

sceKernelGetSystemSwVersion

Version NID
0.940-3.60 0x5182E212

sceKernelSetSystemSwVersion

Version NID
1.69 0x912AEB73
3.60 non existent

sceKernelGetAllowedSdkVersionOnSystem

Version NID
1.69-3.60 0x4397FC4E

sceKernelGetModuleList

Version NID
1.69-3.60 0x2EF2581F

sceKernelGetModuleIdByAddr

Version NID
1.69-3.60 0xF5798C7C

sceKernelGetModuleInfo

Version NID
1.69-3.60 0x36585DAF

sceKernelGetLibraryInfoByNID

Version NID
1.69-3.60 0xEAEB1312

sceKernelIsCalledFromSysModule

Version NID
1.69 non existent
3.60 0x85E6D2BB

sceKernelInhibitLoadingModule

Version NID
1.69 non existent
3.60 0x6CED1F63

Added somewhere between 3.30 an 3.60 to prevent loading Sysmodules from webbrowser (see Vitasploit 2.00-3.36 and h-encore 3.65-3.68 writeup).

SceBacktraceForDriver

sceKernelBacktraceForDriver

Version NID
0.990-3.60 0x166B9C8C 
// a4 size = 0x10
int sceKernelBacktraceForDriver(int a1, int a2, int a3, char* a4);

sceKernelPrintBacktraceForDriver

Version NID
0.990 0xC5608386
3.60 0x7C878F90

sceKernelBacktraceInternalForDriver

Version NID
0.990 0xCECD5584
3.60 0x888E99B8

SceBacktrace

_sceKernelBacktrace

Version NID
3.60 0xBF371A98

Calls sceKernelBacktraceForDriver. 

// a4 size = 0x10
int _sceKernelBacktrace(int a1, int a2, int a3, char* a4);

_sceKernelPrintBacktrace

Version NID
0.990 0x21F00CF2

Calls sceKernelPrintBacktraceForDriver.

Retrieved from "http://wiki.henkaku.xyz/vita/index.php?title=SceKernelModulemgr&oldid=11654"