BITS 32
global _start
section .text
; eax
; ebx
; edi
%define you esi
%define nul ebp
%define lim edx
%define meh ecx
%define ADDR(x) (x - $$)
; %1 = %2
%macro COPY 2
push %2
pop %1
%endmacro
%macro ADDI 2
%rep %2
inc %1
%endrep
%endmacro
%macro SUBI 2
%rep %2
dec %1
%endrep
%endmacro
%macro GRAB 1
pop %1
%endmacro
%macro PEEK 1
pop %1
push %1
%endmacro
%macro SWAP 2
xchg eax, %1
xchg eax, %2
xchg eax, %1
%endmacro
_start:
cld
COPY lim, esi
SUBI lim, 1
PUSH edi
;;; initialize YOU
.init_you:
PUSH nul
COPY edi, esp
SUBI nul, 1
pushf
pop eax
;;; nul is set to 1
ADDI nul, 2
ADDI meh, 1
SUBI eax, 6
stosb
ADDI edi, 2
COPY eax, meh
stosb
GRAB you
;;; END initialize YOU
GRAB edi
PUSH edi
PUSH you
;;; load jmp targets
.load_jmps:
PUSH you
PUSH edi
PUSH you
COPY edi, esp
ADDI edi, 1
COPY eax, nul
stosb
GRAB ebx
SUBI ebx, 8
GRAB edi
GRAB you
PUSH ebx
.calculate_buckets_addr:
PUSH edi
PUSH edi
COPY edi, esp
ADDI edi, 1
COPY eax, nul
stosb
GRAB ebx
GRAB edi
PUSH ebx
;;; reset nul to 0
.reset_nul:
SUBI nul, 1
.setup_count:
COPY esi, edi
PUSH nul
TIMES 0x90 - ADDR($) nop
;;; - buf
;;; - you
;;; - jmp targets
;;; - buckets
;;; - index
.count:
GRAB eax
GRAB meh
PUSH meh
PUSH eax
lodsb
pushad
PUSH meh
COPY edi, esp
stosb
GRAB esi
COPY edi, esi
lodsb
ADDI eax, 1
stosb
popad
.count_loop:
GRAB eax
GRAB edi
GRAB ebx
GRAB meh
PUSH meh
PUSH ebx
PUSH edi
pushad
PUSH lim
COPY edi, esp
PUSH eax
COPY esi, esp
cmpsb
GRAB eax
GRAB eax
salc
ADDI eax, 1
xlatb
GRAB nul
PUSH meh
COPY edi, esp
stosb
popad
ADDI eax, 1
PUSH eax
PUSH edi
ret
;;; - buf
;;; - you
;;; - jmp targets
;;; - buckets
;;; - index
times 0xc0 - ADDR($) nop
.setup:
GRAB eax
GRAB esi
GRAB meh
GRAB ebx
GRAB edi
PUSH nul
PUSH edi
PUSH ebx
ADDI meh, 2
PUSH meh
times 0xd0 - ADDR($) nop
.outer:
lodsb
COPY lim, eax
PUSH nul
;;; - index
;;; - buf
;;; - you
;;; - jmp targets+2
;;; - index
times 0xd8 - ADDR($) nop
.inner:
GRAB eax
GRAB ebx
GRAB meh
pushad
PUSH lim
COPY edi, esp
PUSH eax
COPY esi, esp
cmpsb
cmc
GRAB eax
GRAB eax
salc
ADDI eax, 1
xlatb
GRAB ebx
PUSH meh
COPY edi, esp
stosb
COPY eax, nul
ADDI eax, 1
stosb
popad
PUSH meh
PUSH ebx
ADDI eax, 1
PUSH eax
PUSH edi
ret
times 0x100 - ADDR($) nop
COPY eax, esp
GRAB ebx
GRAB ebx
GRAB meh
GRAB edi
GRAB ebx
xchg eax, esp
COPY eax, ebx
stosb
GRAB eax
GRAB ebx
GRAB meh
GRAB edi
ADDI edi, 1
PUSH edi
PUSH meh
PUSH ebx
PUSH eax
ADDI ebx, 2
COPY eax, nul
xlatb
PUSH meh
COPY edi, esp
stosb
ret
times 0x120 - ADDR($) nop
;;; - index
;;; - buf
;;; - you
;;; - jmp targets+2
;;; - index
GRAB eax
GRAB ebx
GRAB meh
GRAB edi
GRAB eax
ADDI eax, 1
PUSH eax
PUSH edi
PUSH meh
PUSH ebx
ADDI ebx, 3
pushad
PUSH eax
COPY edi, esp
PUSH nul
COPY esi, esp
cmpsb
GRAB eax
GRAB eax
salc
ADDI eax, 1
xlatb
GRAB ebx
PUSH meh
COPY edi, esp
stosb
salc
ADDI eax, 1
stosb
popad
PUSH edi
ret
times 0x150 - ADDR($) nop
GRAB eax
GRAB you
PUSH you
COPY eax, nul
ADDI eax, 1
COPY edi, esp
ADDI edi, 1
stosb
ret
times 0x188 - ADDR($) nop
db 0x90, 0xc0, 0x20, 0x00, 0xd8, 0xd0, 0x50
times 0x190 - ADDR($) nop
