Function at 0x558440
Capabilities:
Authenticate hmac
Encode data using xor
Resolve function by parsing pe exports

Disassembly:
mov eax, 0x32c
call fcn.005650a0
mov eax, dword [0x80100c]
xor eax, esp
mov dword [esp + 0x328], eax
cmp dword [esp + 0x348], 0x100000
mov eax, dword [esp + 0x334]
mov ecx, dword [esp + 0x33c]
mov edx, dword [esp + 0x340]
push ebx
mov ebx, dword [esp + 0x334]
push ebp
push esi
mov esi, dword [esp + 0x344]
mov dword [esp + 0x5c], eax
mov eax, dword [esp + 0x358]
mov ebp, 8
push edi
mov dword [esp + 0x70], ebx
mov dword [esp + 0x50], esi
mov dword [esp + 0x44], ecx
mov dword [esp + 0x48], edx
mov dword [esp + 0x4c], eax
mov edi, 0x40
mov dword [esp + 0x40], 0x28
mov dword [esp + 0x24], ebp
mov byte [esp + 0x12], 1
jb 0x5584dd
push 0x78e518
push 0x1c7
push 0x78e4cc
call fcn.004b1d10
add esp, 0xc
push ebx
call fcn.0049dc80
push eax
call fcn.0049ebf0
add esp, 8
cmp eax, 0x2a0
jg 0x5585b7
je 0x558582
cmp eax, 4
je 0x558540
cmp eax, 0x40
jne 0x5585cc
lea ecx, [esp + 0x90]
push ecx
call fcn.004d9cf0
add esp, 4
test eax, eax
jle 0x558c15
mov dword [esp + 0x28], 0x558200
mov dword [esp + 0x14], 0x4db3c0
mov dword [esp + 0x18], 0x14
jmp 0x558687
lea edx, [esp + 0x90]
push edx
call fcn.004b0eb0
add esp, 4
test eax, eax
jle 0x558c15
mov dword [esp + 0x28], 0x558170
mov dword [esp + 0x14], 0x4af030
mov dword [esp + 0x18], 0x10
mov dword [esp + 0x40], 0x30
mov byte [esp + 0x12], 0
jmp 0x558687
lea eax, [esp + 0x90]
push eax
call fcn.004af9c0
add esp, 4
test eax, eax
jle 0x558c15
mov dword [esp + 0x28], 0x5582b0
mov dword [esp + 0x14], 0x4b0bb0
mov dword [esp + 0x18], 0x20
jmp 0x558687
sub eax, 0x2a1
je 0x558646
sub eax, 1
je 0x558628
sub eax, 1
je 0x5585f6
push 0x758578
push 0x209
push 0x78e4cc
call fcn.004b1d10
add esp, 0xc
test esi, esi
je 0x558c15
mov dword [esi], 0
jmp 0x558c15
lea ecx, [esp + 0x90]
push ecx
call fcn.004af960
add esp, 4
test eax, eax
jle 0x558c15
mov dword [esp + 0x28], 0x5582b0
mov dword [esp + 0x14], 0x4b0bb0
mov dword [esp + 0x18], 0x1c
jmp 0x558687
lea edx, [esp + 0x90]
push edx
call fcn.004db5d0
add esp, 4
test eax, eax
jle 0x558c15
mov dword [esp + 0x18], edi
jmp 0x558666
lea eax, [esp + 0x90]
push eax
call fcn.004db530
add esp, 4
test eax, eax
jle 0x558c15
mov dword [esp + 0x18], 0x30
mov dword [esp + 0x24], 0x10
mov ebp, dword [esp + 0x24]
mov edi, 0x80
mov dword [esp + 0x14], 0x4dc290
mov dword [esp + 0x28], 0x5583b0
mov bl, byte [esp + 0x364]
mov dword [esp + 0x34], 0xd
test bl, bl
je 0x5586ad
mov ecx, dword [esp + 0x360]
mov edx, dword [esp + 0x40]
lea eax, [edx + ecx + 0xb]
mov dword [esp + 0x34], eax
mov eax, dword [esp + 0x358]
xor ecx, ecx
test bl, bl
sete cl
lea ecx, [ecx*4 + 2]
mov dword [esp + 0x30], ecx
mov ecx, dword [esp + 0x34]
sub ecx, dword [esp + 0x18]
lea edx, [ecx + ebp]
add edx, edi
lea eax, [edx + eax - 1]
xor edx, edx
div edi
mov edx, dword [esp + 0x354]
add ecx, edx
xor edx, edx
mov esi, eax
xor eax, eax
mov dword [esp + 0x20], eax
mov dword [esp + 0x2c], eax
mov eax, ecx
div edi
mov dword [esp + 0x38], edx
xor edx, edx
mov dword [esp + 0x54], eax
lea eax, [ecx + ebp]
div edi
xor edx, edx
test bl, bl
setne dl
mov dword [esp + 0x64], eax
mov eax, dword [esp + 0x30]
add edx, eax
cmp esi, edx
jbe 0x558729
sub esi, eax
mov eax, esi
mov dword [esp + 0x20], eax
imul eax, edi
mov dword [esp + 0x2c], eax
cmp byte [esp + 0x364], 0
lea ebx, [ecx*8]
jne 0x5587c8
push edi
lea eax, [esp + 0x1bc]
push 0
push eax
lea ebx, [ebx + edi*8]
call fcn.00563860
mov esi, dword [esp + 0x36c]
add esp, 0xc
cmp esi, 0x80
jbe 0x55877a
push 0x78e4f0
push 0x271
push 0x78e4cc
call fcn.004b1d10
add esp, 0xc
mov ecx, dword [esp + 0x4c]
push esi
push ecx
lea edx, [esp + 0x1c0]
push edx
call fcn.005645b0
add esp, 0xc
xor eax, eax
test edi, edi
jbe 0x5587ad
jmp 0x5587a0
xor byte [esp + eax + 0x1b8], 0x36
inc eax
cmp eax, edi
jb 0x5587a0
mov esi, dword [esp + 0x14]
lea eax, [esp + 0x1b8]
push eax
lea ecx, [esp + 0x94]
push ecx
call esi
add esp, 8
jmp 0x5587cc
mov esi, dword [esp + 0x14]
cmp byte [esp + 0x12], 0
je 0x55880d
lea edx, [ebp - 4]
push edx
lea eax, [esp + 0x16c]
push 0
push eax
call fcn.00563860
lea ebp, [esp + ebp + 0x174]
mov ecx, ebx
mov edx, ebx
shr ecx, 0x18
shr edx, 0x10
mov eax, ebx
add esp, 0xc
shr eax, 8
mov byte [ebp - 4], cl
mov byte [ebp - 3], dl
mov byte [ebp - 2], al
mov byte [ebp - 1], bl
jmp 0x558842
push ebp
lea ecx, [esp + 0x16c]
push 0
push ecx
call fcn.00563860
lea ebp, [esp + ebp + 0x174]
mov edx, ebx
mov eax, ebx
shr edx, 0x18
shr eax, 0x10
mov ecx, ebx
add esp, 0xc
shr ecx, 8
mov byte [ebp - 5], dl
mov byte [ebp - 6], al
mov byte [ebp - 7], cl
mov byte [ebp - 8], bl
mov ebp, dword [esp + 0x2c]
test ebp, ebp
jbe 0x55896c
cmp byte [esp + 0x364], 0
je 0x5588ef
mov esi, dword [esp + 0x34]
cmp esi, edi
jbe 0x558c15
mov ebx, dword [esp + 0x44]
mov ebp, dword [esp + 0x14]
lea edx, [esp + 0x90]
push ebx
push edx
sub esi, edi
call ebp
push esi
add ebx, edi
lea eax, [esp + 0x244]
push ebx
push eax
call fcn.005645b0
mov ebx, dword [esp + 0x5c]
mov ecx, edi
sub ecx, esi
push ecx
lea edx, [esp + esi + 0x250]
push ebx
push edx
call fcn.005645b0
lea eax, [esp + 0x258]
push eax
lea ecx, [esp + 0xb4]
push ecx
call ebp
mov eax, dword [esp + 0x54]
xor edx, edx
div edi
add esp, 0x28
dec eax
cmp eax, 1
jbe 0x55896c
sub ebx, esi
add ebx, edi
lea esi, [eax - 1]
lea edx, [esp + 0x90]
push ebx
push edx
call dword [esp + 0x1c]
add esp, 8
add ebx, edi
sub esi, 1
jne 0x5588d3
jmp 0x55896c
mov eax, dword [esp + 0x44]
mov ecx, dword [eax]
mov edx, dword [eax + 4]
mov ebx, dword [esp + 0x48]
mov dword [esp + 0x238], ecx
mov ecx, dword [eax + 8]
mov dword [esp + 0x23c], edx
mov dl, byte [eax + 0xc]
lea eax, [edi - 0xd]
push eax
mov dword [esp + 0x244], ecx
lea ecx, [esp + 0x249]
push ebx
push ecx
mov byte [esp + 0x250], dl
call fcn.005645b0
lea edx, [esp + 0x244]
push edx
lea eax, [esp + 0xa0]
push eax
call esi
xor edx, edx
mov eax, ebp
div edi
add esp, 0x14
cmp eax, 1
jbe 0x55896c
lea ebx, [ebx + edi - 0xd]
lea ebp, [eax - 1]
lea ecx, [esp + 0x90]
push ebx
push ecx
call esi
add esp, 8
add ebx, edi
sub ebp, 1
jne 0x558957
push 0x40
lea edx, [esp + 0x17c]
push 0
push edx
call fcn.00563860
mov esi, dword [esp + 0x2c]
mov eax, dword [esp + 0x3c]
mov ecx, esi
add eax, ecx
add esp, 0xc
mov dword [esp + 0x3c], esi
mov dword [esp + 0x68], eax
cmp ecx, eax
ja 0x558b58
jmp 0x5589a4
mov esi, dword [esp + 0x3c]
mov ecx, esi
xor ecx, dword [esp + 0x54]
xor esi, dword [esp + 0x64]
lea eax, [ecx - 1]
not ecx
shr ecx, 0x1f
shr eax, 0x1f
and al, cl
mov ecx, esi
lea ebx, [esi - 1]
shr ebx, 0x1f
not ecx
shr ecx, 0x1f
and bl, cl
neg al
neg bl
xor esi, esi
mov byte [esp + 0x1f], al
mov byte [esp + 0x13], bl
test edi, edi
jbe 0x558aef
mov ecx, dword [esp + 0x38]
movzx ebp, al
lea edx, [ecx + 1]
shr edx, 0x1f
not bl
or bl, al
mov dword [esp + 0x5c], ebp
mov ebp, dword [esp + 0x38]
mov dword [esp + 0x6c], edx
mov edx, dword [esp + 0x24]
mov eax, edi
sub eax, dword [esp + 0x24]
shr ecx, 0x1f
neg ebp
sub edx, edi
mov dword [esp + 0x74], eax
lea eax, [esp + edx + 0x168]
mov dword [esp + 0x30], ecx
mov byte [esp + 0x1e], bl
mov dword [esp + 0x20], eax
jmp 0x558a34
mov ecx, dword [esp + 0x30]
mov eax, dword [esp + 0x2c]
mov edx, dword [esp + 0x34]
mov byte [esp + 0x12], 0
cmp eax, edx
jae 0x558a4e
mov edx, dword [esp + 0x44]
mov dl, byte [edx + eax]
jmp 0x558a64
mov ebx, dword [esp + 0x358]
add ebx, edx
cmp eax, ebx
jae 0x558a68
mov ebx, dword [esp + 0x48]
sub ebx, edx
mov dl, byte [ebx + eax]
mov byte [esp + 0x12], dl
inc eax
mov dword [esp + 0x2c], eax
mov edx, esi
shr edx, 0x1f
mov bl, dl
xor bl, cl
mov eax, ebp
shr eax, 0x1f
xor al, cl
or al, bl
mov ebx, dword [esp + 0x38]
xor al, dl
dec al
movzx ecx, al
and ecx, dword [esp + 0x5c]
inc ebx
mov eax, esi
sub eax, ebx
mov bl, byte [esp + 0x6c]
shr eax, 0x1f
xor al, bl
xor bl, dl
or al, bl
mov bl, byte [esp + 0x13]
xor al, dl
dec al
and al, byte [esp + 0x1f]
mov dl, cl
not dl
and dl, byte [esp + 0x12]
and cl, 0x80
not al
or dl, cl
and al, dl
and al, byte [esp + 0x1e]
cmp esi, dword [esp + 0x74]
jb 0x558ada
movzx ecx, bl
mov dl, cl
not dl
and dl, al
mov eax, dword [esp + 0x20]
mov al, byte [eax]
and al, cl
or al, dl
inc dword [esp + 0x20]
mov byte [esp + esi + 0x2b8], al
inc esi
inc ebp
cmp esi, edi
jb 0x558a30
lea ecx, [esp + 0x2b8]
push ecx
lea edx, [esp + 0x94]
push edx
call dword [esp + 0x1c]
lea eax, [esp + 0x2c0]
push eax
lea ecx, [esp + 0x9c]
push ecx
call dword [esp + 0x38]
mov esi, dword [esp + 0x28]
add esp, 0x10
xor eax, eax
test esi, esi
jbe 0x558b45
jmp 0x558b30
mov dl, byte [esp + eax + 0x2b8]
and dl, bl
or byte [esp + eax + 0x178], dl
inc eax
cmp eax, esi
jb 0x558b30
mov eax, dword [esp + 0x3c]
inc eax
mov dword [esp + 0x3c], eax
cmp eax, dword [esp + 0x68]
jbe 0x5589a0
lea eax, [esp + 0x78]
push eax
call fcn.004ab460
mov ecx, dword [esp + 0x74]
mov edx, dword [ecx]
push 0
push edx
lea eax, [esp + 0x84]
push eax
call fcn.004ab4b0
add esp, 0x10
test eax, eax
jle 0x558c08
cmp byte [esp + 0x364], 0
je 0x558c30
mov esi, dword [esp + 0x40]
push esi
lea ecx, [esp + 0x1bc]
push 0x5c
push ecx
call fcn.00563860
mov edx, dword [esp + 0x36c]
mov eax, dword [esp + 0x58]
push edx
push eax
lea ecx, [esp + 0x8c]
push ecx
call fcn.004ab660
add esp, 0x18
test eax, eax
jle 0x558c08
push esi
lea edx, [esp + 0x1bc]
push edx
lea eax, [esp + 0x80]
push eax
call fcn.004ab660
add esp, 0xc
test eax, eax
jle 0x558c08
mov ecx, dword [esp + 0x18]
push ecx
lea edx, [esp + 0x17c]
push edx
lea eax, [esp + 0x80]
push eax
call fcn.004ab660
add esp, 0xc
test eax, eax
jg 0x558c8f
lea eax, [esp + 0x78]
push eax
call fcn.004ab6f0
add esp, 4
xor eax, eax
mov ecx, dword [esp + 0x338]
pop edi
pop esi
pop ebp
pop ebx
xor ecx, esp
call fcn.005635df
add esp, 0x32c
ret
xor eax, eax
test edi, edi
jbe 0x558c4d
jmp 0x558c40
xor byte [esp + eax + 0x1b8], 0x6a
inc eax
cmp eax, edi
jb 0x558c40
push edi
lea ecx, [esp + 0x1bc]
push ecx
lea edx, [esp + 0x80]
push edx
call fcn.004ab660
add esp, 0xc
test eax, eax
jle 0x558c08
mov eax, dword [esp + 0x18]
push eax
lea ecx, [esp + 0x17c]
push ecx
lea edx, [esp + 0x80]
push edx
call fcn.004ab660
add esp, 0xc
test eax, eax
jle 0x558c08
mov ecx, dword [esp + 0x60]
lea eax, [esp + 0x58]
push eax
push ecx
lea edx, [esp + 0x80]
push edx
call fcn.004ab7d0
mov eax, dword [esp + 0x5c]
add esp, 0xc
test eax, eax
je 0x558cb7
mov ecx, dword [esp + 0x58]
mov dword [eax], ecx
lea edx, [esp + 0x78]
push edx
call fcn.004ab6f0
add esp, 4
mov eax, 1
jmp 0x558c17