CHAPTER 79. “QR9”: RUBIK’S CUBE INSPIRED AMATEUR CRYPTO-ALGORITHM CHAPTER 79. “QR9”: RUBIK’S CUBE INSPIRED AMATEUR CRYPTO-ALGORITHM
.text:00541050 arg_4 = dword ptr 8
.text:00541050 arg_8 = byte ptr 0Ch
.text:00541050
.text:00541050 mov eax, [esp+arg_4]
.text:00541054 mov ecx, [esp+arg_0]
.text:00541058 mov al, cube64[eax+ecx*8]
.text:0054105F mov cl, [esp+arg_8]
.text:00541063 shr al, cl
.text:00541065 and al, 1
.text:00541067 retn
.text:00541067 get_bit endp
.text:00541067
.text:00541068 align 10h
.text:00541070
.text:00541070 ; =============== S U B R O U T I N E =======================================
.text:00541070
.text:00541070
.text:00541070 rotate1 proc near ; CODE XREF: rotate_all_with_password+8E
.text:00541070
.text:00541070 internal_array_64= byte ptr -40h
.text:00541070 arg_0 = dword ptr 4
.text:00541070
.text:00541070 sub esp, 40h
.text:00541073 push ebx
.text:00541074 push ebp
.text:00541075 mov ebp, [esp+48h+arg_0]
.text:00541079 push esi
.text:0054107A push edi
.text:0054107B xor edi, edi ; EDI is loop1 counter
.text:0054107D lea ebx, [esp+50h+internal_array_64]
.text:00541081
.text:00541081 first_loop1_begin: ; CODE XREF: rotate1+2E
.text:00541081 xor esi, esi ; ESI is loop2 counter
.text:00541083
.text:00541083 first_loop2_begin: ; CODE XREF: rotate1+25
.text:00541083 push ebp ; arg_0
.text:00541084 push esi
.text:00541085 push edi
.text:00541086 call get_bit
.text:0054108B add esp, 0Ch
.text:0054108E mov [ebx+esi], al ; store to internal array
.text:00541091 inc esi
.text:00541092 cmp esi, 8
.text:00541095 jl short first_loop2_begin
.text:00541097 inc edi
.text:00541098 add ebx, 8
.text:0054109B cmp edi, 8
.text:0054109E jl short first_loop1_begin
.text:005410A0 lea ebx, [esp+50h+internal_array_64]
.text:005410A4 mov edi, 7 ; EDI is loop1 counter, initial state is⤦
Ç 7
.text:005410A9
.text:005410A9 second_loop1_begin: ; CODE XREF: rotate1+57
.text:005410A9 xor esi, esi ; ESI is loop2 counter
.text:005410AB
.text:005410AB second_loop2_begin: ; CODE XREF: rotate1+4E
.text:005410AB mov al, [ebx+esi] ; value from internal array
.text:005410AE push eax
.text:005410AF push ebp ; arg_0
.text:005410B0 push edi
.text:005410B1 push esi
.text:005410B2 call set_bit
.text:005410B7 add esp, 10h
.text:005410BA inc esi ; increment loop2 counter
.text:005410BB cmp esi, 8
.text:005410BE jl short second_loop2_begin
.text:005410C0 dec edi ; decrement loop2 counter
.text:005410C1 add ebx, 8
.text:005410C4 cmp edi, 0FFFFFFFFh
.text:005410C7 jg short second_loop1_begin