Anonymous

; void ring3_me_please(uint32_t stackbase, uint32_t userstackbase, uint32_t entry, uint32_t argc, uint32_t argv, uint32_t cs, uint32_t ds);
[global _ring3_me_please]
_ring3_me_please:
        push    ebp
        mov     ebp, esp

        mov     eax, [ebp+0x08]
        mov     esp, eax

        ; Set up the incoming stack
        push    dword[ebp+0x20] ; user ss
        push    dword[ebp+0x0C] ; user esp
        push    dword 0x0202    ; eflags
        push    dword[ebp+0x1C] ; user cs
        push    dword[ebp+0x10] ; user eip

        mov     eax, dword[ebp+0x20]
        mov     ds,  eax
        mov     es,  eax
        mov     fs,  eax
        mov     gs,  eax

        xor     eax, eax
        mov     ebx, eax
        mov     ecx, eax
        mov     edx, eax
        mov     ebp, eax
        mov     esi, eax
        mov     edi, eax
        iret