Function at 0x403e80
Capabilities:
Encode data using xor

Disassembly:
push ebp
push edi
push esi
push ebx
mov ebx, eax
sub esp, 0x9c
fld xword [esp + 0xb0]
fxam
wait
fnstsw ax
and ax, 0x4500
cmp ax, 0x100
je 0x4041e0
fld st(0)
fstp xword [esp + 0x50]
movzx edx, word [esp + 0x58]
test dx, dx
js 0x4040a0
fxam
wait
fnstsw ax
and ax, 0x4500
cmp ax, 0x500
je 0x4043d0
and dx, 0x7fff
fstp xword [esp + 0x40]
mov edi, dword [esp + 0x40]
mov ebp, dword [esp + 0x44]
mov word [esp + 0x30], dx
jne 0x4040b0
mov edx, ebp
or edx, edi
jne 0x404278
mov eax, dword [ebx + 0xc]
mov dword [esp + 0x24], eax
cmp eax, 0xe
jbe 0x4040d8
mov eax, dword [ebx + 4]
mov dword [esp + 0x2c], eax
lea eax, [esp + 0x78]
mov dword [esp + 0x28], eax
mov edx, dword [ebx + 0xc]
test edx, edx
jle 0x404468
mov byte [esp + 0x78], 0x2e
lea eax, [esp + 0x79]
mov byte [eax], 0x30
lea esi, [eax + 1]
mov eax, dword [ebx + 8]
mov dword [esp + 0x34], eax
test eax, eax
jle 0x404392
mov edx, dword [ebx + 0xc]
mov eax, esi
sub eax, dword [esp + 0x28]
movsx edi, word [esp + 0x30]
test edx, edx
lea ecx, [eax + edx]
mov edx, dword [esp + 0x2c]
cmovg eax, ecx
mov ecx, 0x66666667
mov dword [esp + 0x24], edi
and edx, 0x1c0
cmp edx, 1
sbb eax, 0xfffffffa
mov ebp, eax
mov eax, edi
imul ecx
mov eax, edi
mov edi, ebp
sar eax, 0x1f
mov ecx, edx
sar ecx, 2
sub ecx, eax
je 0x40447f
mov dword [esp + 0x30], esi
lea esi, [esi]
nop
mov eax, 0x66666667
add edi, 1
imul ecx
mov eax, ecx
lea esi, [edi + 2]
sar eax, 0x1f
sub esi, ebp
sar edx, 2
sub edx, eax
mov ecx, edx
jne 0x403f90
movsx ebp, si
mov esi, dword [esp + 0x30]
mov eax, dword [esp + 0x34]
cmp eax, edi
jle 0x4043c0
sub eax, edi
test dword [esp + 0x2c], 0x600
je 0x404420
mov dword [ebx + 8], eax
test byte [esp + 0x2c], 0x80
jne 0x4043ab
test dword [esp + 0x2c], 0x100
jne 0x4043f0
test byte [esp + 0x2c], 0x40
jne 0x404408
mov edx, ebx
mov eax, 0x30
call fcn.004027a0
mov eax, dword [ebx + 4]
mov edx, ebx
and eax, 0x20
or eax, 0x58
call fcn.004027a0
mov eax, dword [ebx + 8]
test eax, eax
jle 0x404049
test byte [ebx + 5], 2
je 0x404049
sub eax, 1
mov dword [ebx + 8], eax
lea esi, [esi]
lea esi, [esi]
mov edx, ebx
mov eax, 0x30
call fcn.004027a0
mov eax, dword [ebx + 8]
lea edx, [eax - 1]
mov dword [ebx + 8], edx
test eax, eax
jg 0x404030
mov edi, dword [esp + 0x28]
cmp esi, dword [esp + 0x28]
ja 0x40407a
jmp 0x40420c
movzx eax, word [ebx + 0x1c]
mov word [esp + 0x68], ax
test ax, ax
jne 0x404358
cmp esi, edi
je 0x40420c
movsx eax, byte [esi - 1]
sub esi, 1
cmp eax, 0x2e
je 0x4042c8
cmp eax, 0x2c
je 0x404060
mov edx, ebx
call fcn.004027a0
jmp 0x404072
or dword [ebx + 4], 0x80
jmp 0x403eba
mov eax, dword [ebx + 0xc]
sub word [esp + 0x30], 0x3fff
mov dword [esp + 0x24], eax
cmp eax, 0xe
jbe 0x4040de
mov eax, dword [ebx + 4]
mov edx, ebp
or edx, edi
mov dword [esp + 0x2c], eax
jne 0x404148
jmp 0x403f0a
shld ebp, edi, 1
add edi, edi
test ebp, ebp
jns 0x4040d8
mov ecx, 0xe
sub ecx, dword [esp + 0x24]
mov eax, 4
xor edx, edx
shl ecx, 2
xor esi, esi
shld edx, eax, cl
shl eax, cl
test cl, 0x20
cmovne edx, eax
cmovne eax, esi
mov esi, edi
mov edi, ebp
shrd esi, ebp, 1
shr edi, 1
add esi, eax
adc edi, edx
test edi, edi
js 0x4042b8
shld edi, esi, 1
add esi, esi
mov ecx, 0xf
sub ecx, dword [esp + 0x24]
xor ebp, ebp
shl ecx, 2
shrd esi, edi, cl
shr edi, cl
and ecx, 0x20
cmovne esi, edi
cmovne edi, ebp
mov ebp, edi
mov edi, esi
mov eax, dword [ebx + 4]
mov dword [esp + 0x2c], eax
lea eax, [esp + 0x78]
mov dword [esp + 0x24], ebx
mov dword [esp + 0x28], eax
mov esi, eax
mov eax, dword [esp + 0x2c]
mov edx, eax
and eax, 0x20
and edx, 0x800
mov byte [esp + 0x34], al
mov dword [esp + 0x3c], edx
movzx edx, word [esp + 0x30]
jmp 0x40419d
xor ecx, ecx
cmp esi, dword [esp + 0x28]
ja 0x40418b
mov eax, dword [esp + 0x24]
mov ebx, dword [eax + 0xc]
test ebx, ebx
js 0x404193
lea eax, [ecx + 0x30]
mov byte [esi], al
add esi, 1
mov ecx, ebp
or ecx, edi
je 0x404370
mov ecx, edi
mov eax, edi
mov ebx, ebp
and ecx, 0xfffffff0
and eax, 0xf
or ebx, ecx
je 0x4042d8
mov ebx, dword [esp + 0x24]
shrd edi, ebp, 4
shr ebp, 4
mov ecx, dword [ebx + 0xc]
test ecx, ecx
jle 0x4041c9
sub ecx, 1
mov dword [ebx + 0xc], ecx
test eax, eax
je 0x404178
mov ecx, eax
cmp eax, 9
jbe 0x40418b
add eax, 0x37
or al, byte [esp + 0x34]
jmp 0x40418e
fstp st(0)
add esp, 0x9c
mov ecx, ebx
mov edx, 0x40a353
xor eax, eax
pop ebx
pop esi
pop edi
pop ebp
jmp fcn.00402b00
mov edx, ebx
mov eax, 0x30
call fcn.004027a0
mov eax, dword [ebx + 0xc]
lea edx, [eax - 1]
mov dword [ebx + 0xc], edx
test eax, eax
jg 0x404200
mov eax, dword [ebx + 4]
mov edx, ebx
and eax, 0x20
or eax, 0x50
call fcn.004027a0
mov eax, dword [esp + 0x24]
add dword [ebx + 8], ebp
or dword [ebx + 4], 0x1c0
cdq
mov dword [esp + 0x68], eax
mov dword [esp + 0x6c], edx
mov ecx, edx
mov dword [esp], eax
mov eax, dword [esp + 0x6c]
sar ecx, 0x1f
mov dword [esp + 0x10], ebx
mov dword [esp + 0x70], ecx
mov dword [esp + 0x74], ecx
mov dword [esp + 4], eax
mov dword [esp + 8], ecx
mov dword [esp + 0xc], ecx
call fcn.00403140
add esp, 0x9c
pop ebx
pop esi
pop edi
pop ebp
ret
test ebp, ebp
js 0x404489
mov eax, 0xffffc001
lea esi, [esi]
shld ebp, edi, 1
mov edx, eax
add edi, edi
sub eax, 1
test ebp, ebp
jns 0x404288
mov word [esp + 0x30], dx
mov eax, dword [ebx + 0xc]
mov dword [esp + 0x24], eax
cmp eax, 0xe
ja 0x404141
jmp 0x4040e2
add word [esp + 0x30], 1
jmp 0x404121
mov eax, ebx
call fcn.00403560
jmp 0x404072
cmp esi, dword [esp + 0x28]
ja 0x4042f8
mov ebx, dword [esp + 0x3c]
test ebx, ebx
jne 0x4042f8
mov ecx, dword [esp + 0x24]
mov ecx, dword [ecx + 0xc]
test ecx, ecx
jle 0x4042fe
lea esi, [esi]
mov byte [esi], 0x2e
add esi, 1
mov ecx, edi
xor ecx, 1
mov dword [esp + 0x30], ecx
lea ecx, [edx - 1]
mov word [esp + 0x3a], cx
mov ecx, dword [esp + 0x30]
or ecx, ebp
je 0x404458
movzx ecx, word [esp + 0x3a]
mov dword [esp + 0x30], esi
mov esi, eax
lea esi, [esi]
lea esi, [esi]
shrd edi, ebp, 1
shr ebp, 1
mov edx, ecx
mov ebx, edi
mov eax, ebp
lea ecx, [edx - 1]
xor ebx, 1
or eax, ebx
jne 0x404330
mov eax, esi
xor edi, edi
mov esi, dword [esp + 0x30]
xor ebp, ebp
jmp 0x4041c9
mov ecx, ebx
mov edx, 1
lea eax, [esp + 0x68]
call fcn.00402800
jmp 0x404072
mov word [esp + 0x30], dx
mov ebx, dword [esp + 0x24]
cmp esi, dword [esp + 0x28]
je 0x403f12
mov eax, dword [ebx + 8]
mov dword [esp + 0x34], eax
test eax, eax
jg 0x403f3b
movsx eax, word [esp + 0x30]
mov ebp, 2
mov dword [esp + 0x24], eax
test byte [esp + 0x2c], 0x80
je 0x403fde
mov edx, ebx
mov eax, 0x2d
call fcn.004027a0
jmp 0x403ff7
mov dword [ebx + 8], 0xffffffff
jmp 0x403fd3
fstp st(0)
add esp, 0x9c
mov eax, edx
mov ecx, ebx
mov edx, 0x40a357
pop ebx
and eax, 0x8000
pop esi
pop edi
pop ebp
jmp fcn.00402b00
mov edx, ebx
mov eax, 0x2b
call fcn.004027a0
jmp 0x403ff7
mov edx, ebx
mov eax, 0x20
call fcn.004027a0
jmp 0x403ff7
lea edx, [eax - 1]
mov dword [ebx + 8], edx
test eax, eax
jle 0x403fd3
nop
mov edx, ebx
mov eax, 0x20
call fcn.004027a0
mov eax, dword [ebx + 8]
lea edx, [eax - 1]
mov dword [ebx + 8], edx
test eax, eax
jg 0x404430
mov eax, dword [ebx + 4]
mov dword [esp + 0x2c], eax
jmp 0x403fd3
xor edi, edi
xor ebp, ebp
jmp 0x4041c9
mov eax, dword [esp + 0x28]
test dword [esp + 0x2c], 0x800
je 0x403f26
jmp 0x403f1d
mov ebp, 2
jmp 0x403fb4
mov eax, 0xffffc002
mov word [esp + 0x30], ax
jmp 0x40429c