Function at 0x405940
Capabilities:
Encode data using xor

Disassembly:
push ebp
push edi
mov ebp, eax
push esi
push ebx
sub esp, 0x5c
fld xword [esp + 0x70]
fld st(0)
fstp xword [esp + 0x28]
fxam
wait
fnstsw ax
and ax, 0x4500
cmp ax, 0x100
je 0x405e61
movzx edx, word [esp + 0x30]
test dx, dx
js 0x405da0
fxam
wait
fnstsw ax
fstp st(0)
and ax, 0x4500
cmp ax, 0x500
je 0x405e76
and dx, 0x7fff
mov word [esp + 8], dx
jne 0x405b20
mov eax, dword [esp + 0x28]
mov edx, dword [esp + 0x2c]
mov edi, edx
mov dword [esp + 4], edx
or edx, eax
mov esi, eax
mov dword [esp], eax
je 0x405dc3
test edi, edi
js 0x405eba
mov eax, 0xffffc001
shld edi, esi, 1
mov edx, eax
add esi, esi
sub eax, 1
test edi, edi
jns 0x4059c1
mov ebx, dword [ebp + 0xc]
mov word [esp + 8], dx
mov dword [esp], esi
mov dword [esp + 4], edi
cmp ebx, 0xe
jbe 0x405b4a
mov eax, dword [ebp + 4]
lea ebx, [esp + 0x3e]
mov dword [esp + 0xc], ebp
mov esi, dword [esp]
mov dword [esp + 0x10], ebx
mov ebp, ebx
movzx ebx, word [esp + 8]
mov edi, eax
mov dword [esp + 0x14], eax
and eax, 0x20
and edi, 0x800
mov byte [esp + 0x1b], al
mov dword [esp + 0x1c], edi
mov edi, dword [esp + 4]
jmp 0x405a6f
mov eax, dword [esp + 0xc]
mov eax, dword [eax + 0xc]
test eax, eax
jle 0x405a35
mov edx, dword [esp + 0xc]
sub eax, 1
mov dword [edx + 0xc], eax
shrd esi, edi, 4
shr edi, 4
test ecx, ecx
mov dword [esp + 8], ebp
je 0x405af2
mov eax, dword [esp + 8]
cmp ecx, 9
lea ebp, [eax + 1]
jle 0x405b12
add ecx, 0x37
or cl, byte [esp + 0x1b]
mov eax, dword [esp + 8]
mov byte [eax], cl
mov edx, edi
or edx, esi
je 0x405bd0
mov ecx, esi
and ecx, 0xf
mov eax, ecx
mov dword [esp], ecx
cdq
mov eax, ecx
mov dword [esp + 4], edx
mov edx, dword [esp + 4]
xor eax, esi
xor edx, edi
or edx, eax
jne 0x405a20
cmp ebp, dword [esp + 0x10]
ja 0x405ab0
mov eax, dword [esp + 0x1c]
test eax, eax
jne 0x405ab0
mov eax, dword [esp + 0xc]
mov dword [esp + 8], ebp
mov eax, dword [eax + 0xc]
test eax, eax
jle 0x405abb
lea esi, [esi]
lea eax, [ebp + 1]
mov byte [ebp], 0x2e
mov dword [esp + 8], eax
mov ebp, esi
mov esi, edi
xor ebp, 1
or esi, ebp
je 0x405ae6
mov eax, dword [esp]
mov edx, dword [esp + 4]
lea esi, [ebx - 1]
shrd eax, edx, 1
shr edx, 1
mov ebx, esi
mov edi, eax
mov ebp, edx
lea esi, [ebx - 1]
xor edi, 1
or ebp, edi
jne 0x405ad0
xor esi, esi
xor edi, edi
test ecx, ecx
jne 0x405a48
mov edx, dword [esp + 0x10]
cmp dword [esp + 8], edx
ja 0x405b0b
mov eax, dword [esp + 0xc]
mov ebp, dword [eax + 0xc]
test ebp, ebp
js 0x405e40
mov eax, dword [esp + 8]
lea ebp, [eax + 1]
add ecx, 0x30
jmp 0x405a5f
mov eax, dword [esp + 0x28]
mov edx, dword [esp + 0x2c]
sub word [esp + 8], 0x3fff
mov dword [esp + 4], edx
or edx, eax
mov dword [esp], eax
je 0x405dc3
mov ebx, dword [ebp + 0xc]
cmp ebx, 0xe
ja 0x4059e8
mov edi, dword [esp + 4]
mov esi, dword [esp]
test edi, edi
js 0x405b66
shld edi, esi, 1
add esi, esi
test edi, edi
jns 0x405b55
mov dword [esp], esi
mov dword [esp + 4], edi
mov ecx, 0xe
mov eax, 4
xor edx, edx
sub ecx, ebx
shl ecx, 2
shld edx, eax, cl
shl eax, cl
test cl, 0x20
je 0x405b85
mov edx, eax
xor eax, eax
mov edi, dword [esp + 4]
mov esi, dword [esp]
shrd esi, edi, 1
shr edi, 1
add eax, esi
adc edx, edi
test edx, edx
js 0x405e8e
shld edx, eax, 1
add eax, eax
mov ecx, 0xf
sub ecx, ebx
shl ecx, 2
shrd eax, edx, cl
shr edx, cl
test cl, 0x20
je 0x405bbc
mov eax, edx
xor edx, edx
mov dword [esp], eax
mov dword [esp + 4], edx
jmp 0x4059e8
mov word [esp + 8], bx
mov ebx, ebp
cmp ebx, dword [esp + 0x10]
mov ebp, dword [esp + 0xc]
je 0x405dd2
mov eax, dword [ebp + 8]
test eax, eax
mov dword [esp], eax
jle 0x405db0
movsx edi, word [esp + 8]
mov edx, dword [ebp + 0xc]
mov eax, ebx
sub eax, dword [esp + 0x10]
test edx, edx
mov dword [esp + 8], edi
jle 0x405c0b
add eax, edx
xor edx, edx
test dword [esp + 0x14], 0x1c0
mov ecx, 0x66666667
setne dl
lea edi, [eax + edx + 5]
mov eax, dword [esp + 8]
imul ecx
mov eax, dword [esp + 8]
mov ecx, edx
sar eax, 0x1f
sar ecx, 2
sub ecx, eax
je 0x405e99
mov esi, 2
mov eax, 0x66666667
add edi, 1
add esi, 1
imul ecx
sar ecx, 0x1f
sar edx, 2
sub edx, ecx
mov ecx, edx
jne 0x405c40
movsx esi, si
mov eax, dword [esp]
cmp eax, edi
jle 0x405cc0
sub eax, edi
test dword [esp + 0x14], 0x600
jne 0x405df1
sub eax, 1
mov dword [ebp + 8], eax
lea esi, [esi]
mov edx, ebp
mov eax, 0x20
call fcn.00404960
mov eax, dword [ebp + 8]
lea edx, [eax - 1]
test eax, eax
mov dword [ebp + 8], edx
jg 0x405c80
mov eax, dword [ebp + 4]
mov dword [esp + 0x14], eax
test byte [esp + 0x14], 0x80
je 0x405cce
mov esi, esi
lea edi, [edi]
mov edx, ebp
mov eax, 0x2d
call fcn.00404960
jmp 0x405ce7
mov dword [ebp + 8], 0xffffffff
test byte [esp + 0x14], 0x80
jne 0x405cb0
test dword [esp + 0x14], 0x100
jne 0x405e00
test byte [esp + 0x14], 0x40
jne 0x405e50
mov edx, ebp
mov eax, 0x30
call fcn.00404960
mov eax, dword [ebp + 4]
mov edx, ebp
and eax, 0x20
or eax, 0x58
call fcn.00404960
mov edx, dword [ebp + 8]
test edx, edx
jle 0x405d1d
mov eax, dword [ebp + 4]
and eax, 0x600
cmp eax, 0x200
je 0x405e11
cmp ebx, dword [esp + 0x10]
mov edi, dword [esp + 0x10]
jbe 0x405d5c
mov esi, esi
lea edi, [edi]
sub ebx, 1
movsx eax, byte [ebx]
mov edx, ebp
call fcn.00404eb0
cmp ebx, edi
jne 0x405d30
mov eax, dword [ebp + 0xc]
lea edx, [eax - 1]
test eax, eax
mov dword [ebp + 0xc], edx
jle 0x405d69
nop
mov edx, ebp
mov eax, 0x30
call fcn.00404960
mov eax, dword [ebp + 0xc]
lea edx, [eax - 1]
test eax, eax
mov dword [ebp + 0xc], edx
jg 0x405d50
mov eax, dword [ebp + 4]
mov edx, ebp
and eax, 0x20
or eax, 0x50
call fcn.00404960
mov eax, dword [esp + 8]
add dword [ebp + 8], esi
mov ecx, ebp
or dword [ebp + 4], 0x1c0
cdq
call fcn.00404ef0
add esp, 0x5c
pop ebx
pop esi
pop edi
pop ebp
ret
or dword [ebp + 4], 0x80
jmp 0x405974
movsx eax, word [esp + 8]
mov esi, 2
mov dword [esp + 8], eax
jmp 0x405cc7
mov eax, dword [ebp + 4]
mov dword [esp + 0x14], eax
lea eax, [esp + 0x3e]
mov dword [esp + 0x10], eax
mov edx, dword [ebp + 0xc]
test edx, edx
jle 0x405ea3
lea eax, [esp + 0x3f]
mov byte [esp + 0x3e], 0x2e
lea ebx, [eax + 1]
mov byte [eax], 0x30
jmp 0x405be5
mov dword [ebp + 8], eax
jmp 0x405cc7
mov edx, ebp
mov eax, 0x2b
call fcn.00404960
jmp 0x405ce7
sub edx, 1
mov dword [ebp + 8], edx
mov esi, esi
lea edi, [edi]
mov edx, ebp
mov eax, 0x30
call fcn.00404960
mov eax, dword [ebp + 8]
lea edx, [eax - 1]
test eax, eax
mov dword [ebp + 8], edx
jg 0x405e20
jmp 0x405d1d
mov ebp, dword [esp + 8]
jmp 0x405a65
mov edx, ebp
mov eax, 0x20
call fcn.00404960
jmp 0x405ce7
fstp st(0)
mov ecx, ebp
mov edx, 0x40c2dd
xor eax, eax
call fcn.00404bc0
jmp 0x405d8f
mov eax, edx
mov ecx, ebp
mov edx, 0x40c2e1
and eax, 0x8000
call fcn.00404bc0
jmp 0x405d8f
add word [esp + 8], 1
jmp 0x405ba4
mov esi, 2
jmp 0x405c5c
test dword [esp + 0x14], 0x800
mov eax, dword [esp + 0x10]
je 0x405de6
jmp 0x405ddd
mov ebx, dword [ebp + 0xc]
mov eax, 0xffffc002
mov word [esp + 8], ax
cmp ebx, 0xe
jbe 0x405b66
jmp 0x4059e8