Function at 0x40fd40
Capabilities:
Authenticate hmac
Encode data using base64
Manually build aes constants
Parse pe header
Resolve function by parsing pe exports

Disassembly:
push ebp
push ebx
push edi
push esi
sub esp, 0x108
mov esi, ecx
test edx, edx
je 0x410231
movaps xmm0, xmmword [str._b_b_b_b_b_b_b_b_b_b_b_b_b_b_b_b_t_t_t_t_t_t_t_t_t_t_t_t_t_t_t_t_a_a_a_a_a_a_a_a_a_a_a_a_a_a_a_aUUUUUUUUUUUUUUUU3333333333333333]
movups xmmword [esi + 0x8f92], xmm0
movups xmmword [esi + 0x8f82], xmm0
movups xmmword [esi + 0x8f72], xmm0
movups xmmword [esi + 0x8f62], xmm0
movups xmmword [esi + 0x8f52], xmm0
movups xmmword [esi + 0x8f42], xmm0
movups xmmword [esi + 0x8f32], xmm0
movups xmmword [esi + 0x8f22], xmm0
movups xmmword [esi + 0x8f12], xmm0
movaps xmm0, xmmword [0x463230]
movups xmmword [esi + 0x8fa2], xmm0
movups xmmword [esi + 0x8fb2], xmm0
movups xmmword [esi + 0x8fc2], xmm0
movups xmmword [esi + 0x8fd2], xmm0
movups xmmword [esi + 0x8fe2], xmm0
movups xmmword [esi + 0x8ff2], xmm0
movups xmmword [esi + 0x9002], xmm0
movaps xmm0, xmmword [0x463240]
movups xmmword [esi + 0x9012], xmm0
mov dword [esi + 0x9026], 0x7070707
mov dword [esi + 0x9022], 0x7070707
mov dword [esi + 0x902e], 0x8080808
mov dword [esi + 0x902a], 0x8080808
movaps xmm0, xmmword [0x463210]
movups xmmword [esi + 0x9032], xmm0
movups xmmword [esi + 0x9042], xmm0
xorps xmm0, xmm0
movups xmmword [esp], xmm0
movups xmmword [esp + 0x10], xmm0
movups xmmword [esp + 0x20], xmm0
movups xmmword [esp + 0x30], xmm0
movups xmmword [esp + 0x40], xmm0
movups xmmword [esp + 0x50], xmm0
movups xmmword [esp + 0x60], xmm0
movups xmmword [esp + 0x70], xmm0
mov dword [esp + 0x80], 0
xor eax, eax
nop word cs:[eax + eax]
movzx ecx, byte [esi + eax + 0x8f12]
inc dword [esp + ecx*4]
movzx ecx, byte [esi + eax + 0x8f13]
inc dword [esp + ecx*4]
movzx ecx, byte [esi + eax + 0x8f14]
inc dword [esp + ecx*4]
movzx ecx, byte [esi + eax + 0x8f15]
inc dword [esp + ecx*4]
add eax, 4
cmp eax, 0x120
jne 0x40fe60
mov dword [esp + 0x88], 0
mov eax, dword [esp + 4]
add eax, eax
mov dword [esp + 0x8c], eax
add eax, dword [esp + 8]
add eax, eax
mov dword [esp + 0x90], eax
add eax, dword [esp + 0xc]
add eax, eax
mov dword [esp + 0x94], eax
add eax, dword [esp + 0x10]
add eax, eax
mov dword [esp + 0x98], eax
add eax, dword [esp + 0x14]
add eax, eax
mov dword [esp + 0x9c], eax
add eax, dword [esp + 0x18]
add eax, eax
mov dword [esp + 0xa0], eax
add eax, dword [esp + 0x1c]
add eax, eax
mov dword [esp + 0xa4], eax
add eax, dword [esp + 0x20]
add eax, eax
mov dword [esp + 0xa8], eax
add eax, dword [esp + 0x24]
add eax, eax
mov dword [esp + 0xac], eax
add eax, dword [esp + 0x28]
add eax, eax
mov dword [esp + 0xb0], eax
add eax, dword [esp + 0x2c]
add eax, eax
mov dword [esp + 0xb4], eax
add eax, dword [esp + 0x30]
add eax, eax
mov dword [esp + 0xb8], eax
add eax, dword [esp + 0x34]
add eax, eax
mov dword [esp + 0xbc], eax
add eax, dword [esp + 0x38]
add eax, eax
mov dword [esp + 0xc0], eax
xor eax, eax
jmp 0x40ff74
mov word [esi + eax*2 + 0x8852], di
inc eax
cmp eax, 0x120
je 0x410012
movzx ebx, byte [esi + eax + 0x8f12]
test ebx, ebx
je 0x40ff68
mov ecx, dword [esp + ebx*4 + 0x84]
lea edx, [ecx + 1]
mov dword [esp + ebx*4 + 0x84], edx
mov edx, ebx
and edx, 3
xor edi, edi
cmp bl, 4
jb 0x40ffeb
and ebx, 0xfffffffc
xor edi, edi
nop word cs:[eax + eax]
mov ebp, ecx
and ebp, 1
shl ebp, 2
lea edi, [edi*8]
add edi, ebp
mov ebp, ecx
and ebp, 2
or ebp, edi
mov edi, ecx
shr edi, 2
and edi, 1
or edi, ebp
mov ebp, ecx
shr ebp, 3
and ebp, 1
lea edi, [edi*2]
add edi, ebp
shr ecx, 4
add ebx, 0xfffffffc
jne 0x40ffb0
test edx, edx
je 0x40ff60
nop word cs:[eax + eax]
mov ebx, ecx
and ebx, 1
lea edi, [ebx + edi*2]
shr ecx, 1
dec edx
jne 0x410000
jmp 0x40ff60
xorps xmm0, xmm0
movups xmmword [esp], xmm0
movups xmmword [esp + 0x10], xmm0
movups xmmword [esp + 0x20], xmm0
movups xmmword [esp + 0x30], xmm0
movups xmmword [esp + 0x40], xmm0
movups xmmword [esp + 0x50], xmm0
movups xmmword [esp + 0x60], xmm0
movups xmmword [esp + 0x70], xmm0
mov dword [esp + 0x80], 0
xor eax, eax
nop dword [eax]
movzx ecx, byte [esi + eax + 0x9032]
inc dword [esp + ecx*4]
movzx ecx, byte [esi + eax + 0x9033]
inc dword [esp + ecx*4]
movzx ecx, byte [esi + eax + 0x9034]
inc dword [esp + ecx*4]
movzx ecx, byte [esi + eax + 0x9035]
inc dword [esp + ecx*4]
add eax, 4
cmp eax, 0x20
jne 0x410050
mov dword [esp + 0x88], 0
mov eax, dword [esp + 4]
add eax, eax
mov dword [esp + 0x8c], eax
add eax, dword [esp + 8]
add eax, eax
mov dword [esp + 0x90], eax
add eax, dword [esp + 0xc]
add eax, eax
mov dword [esp + 0x94], eax
add eax, dword [esp + 0x10]
add eax, eax
mov dword [esp + 0x98], eax
add eax, dword [esp + 0x14]
add eax, eax
mov dword [esp + 0x9c], eax
add eax, dword [esp + 0x18]
add eax, eax
mov dword [esp + 0xa0], eax
add eax, dword [esp + 0x1c]
add eax, eax
mov dword [esp + 0xa4], eax
add eax, dword [esp + 0x20]
add eax, eax
mov dword [esp + 0xa8], eax
add eax, dword [esp + 0x24]
add eax, eax
mov dword [esp + 0xac], eax
add eax, dword [esp + 0x28]
add eax, eax
mov dword [esp + 0xb0], eax
add eax, dword [esp + 0x2c]
add eax, eax
mov dword [esp + 0xb4], eax
add eax, dword [esp + 0x30]
add eax, eax
mov dword [esp + 0xb8], eax
add eax, dword [esp + 0x34]
add eax, eax
mov dword [esp + 0xbc], eax
add eax, dword [esp + 0x38]
add eax, eax
mov dword [esp + 0xc0], eax
xor eax, eax
jmp 0x410162
mov word [esi + eax*2 + 0x8a92], di
inc eax
cmp eax, 0x20
je 0x4101e2
movzx ebx, byte [esi + eax + 0x9032]
test ebx, ebx
je 0x410158
mov ecx, dword [esp + ebx*4 + 0x84]
lea edx, [ecx + 1]
mov dword [esp + ebx*4 + 0x84], edx
mov edx, ebx
and edx, 3
xor edi, edi
cmp bl, 4
jb 0x4101cb
and ebx, 0xfffffffc
xor edi, edi
mov ebp, ecx
and ebp, 1
shl ebp, 2
lea edi, [edi*8]
add edi, ebp
mov ebp, ecx
and ebp, 2
or ebp, edi
mov edi, ecx
shr edi, 2
and edi, 1
or edi, ebp
mov ebp, ecx
shr ebp, 3
and ebp, 1
lea edi, [edi*2]
add edi, ebp
shr ecx, 4
add ebx, 0xfffffffc
jne 0x410190
test edx, edx
je 0x410150
nop
mov ebx, ecx
and ebx, 1
lea edi, [ebx + edi*2]
shr ecx, 1
dec edx
jne 0x4101d0
jmp 0x410150
mov ecx, dword [esi + 0x44]
mov eax, dword [esi + 0x48]
bts eax, ecx
mov dword [esi + 0x48], eax
add ecx, 2
mov dword [esi + 0x44], ecx
cmp ecx, 8
jae 0x410219
jmp 0x410238
shr eax, 8
mov dword [esi + 0x48], eax
mov edx, ecx
or edx, 0xfffffff7
and ecx, 0xfffffff7
add ecx, edx
inc ecx
mov dword [esi + 0x44], ecx
cmp ecx, 7
jbe 0x410238
mov edx, dword [esi + 0x30]
cmp edx, dword [esi + 0x34]
jae 0x410200
lea ecx, [edx + 1]
mov dword [esi + 0x30], ecx
mov byte [edx], al
mov ecx, dword [esi + 0x44]
mov eax, dword [esi + 0x48]
jmp 0x410200
mov ecx, esi
call fcn.00410250
mov ecx, esi
add esp, 0x108
pop esi
pop edi
pop ebx
pop ebp
jmp fcn.00410ef0