Function at 0x503190
Capabilities:
Reference http user-agent string
Resolve function by parsing pe exports

Disassembly:
mov ecx, dword [0x99504c]
mov ecx, dword fs:[ecx]
mov ecx, dword [ecx]
cmp esp, dword [ecx + 8]
jbe 0x50358b
sub esp, 0x60
lea edi, [esp + 0x6c]
xor eax, eax
call fcn.004690fb
mov dword [esp + 0xc], 0
mov ecx, dword [esp + 0x64]
mov edx, dword [esp + 0x68]
xor ebx, ebx
xor ebp, ebp
xor esi, esi
xor edi, edi
jmp 0x5031d1
inc ebx
mov edi, eax
xor eax, eax
cmp edx, ebx
jle 0x503490
movzx eax, byte [ecx + ebx]
cmp al, 0x30
jb 0x50320c
cmp al, 0x39
ja 0x50340a
cmp ebp, 1
jne 0x5031f4
test edi, edi
je 0x503258
lea edi, [edi + edi*4]
movzx eax, al
lea eax, [eax + edi*2 - 0x30]
cmp eax, 0xff
jg 0x5032bc
inc ebp
jmp 0x5031cc
cmp al, 0x2e
jne 0x50340a
test ebx, ebx
je 0x503384
lea ebp, [edx - 1]
cmp ebx, ebp
je 0x503384
lea ebp, [ebx + ecx - 1]
cmp byte [ebp], 0x2e
je 0x503384
cmp esi, 3
je 0x503320
cmp esi, 4
jae 0x50357e
xchg edi, eax
mov byte [esp + esi + 0xc], al
xchg edi, eax
inc esi
xor ebp, ebp
xor eax, eax
jmp 0x5031cc
lea edi, [esp + 0x48]
xor eax, eax
call fcn.004690fa
mov ecx, dword [esp + 0x64]
mov dword [esp + 0x48], ecx
mov dword [esp + 0x4c], edx
lea ecx, [0x7498ea]
mov dword [esp + 0x50], ecx
mov dword [esp + 0x54], 0x26
lea edi, [esp + 0x6c]
call fcn.004690fb
lea ecx, [0x71a160]
mov dword [esp], ecx
lea ecx, [esp + 0x48]
mov dword [esp + 4], ecx
call fcn.00409b00
mov ecx, dword [esp + 8]
lea edx, [0x7b0fd4]
mov dword [esp + 0x80], edx
mov dword [esp + 0x84], ecx
add esp, 0x60
ret
lea edi, [esp + 0x48]
xor eax, eax
call fcn.004690fa
mov ecx, dword [esp + 0x64]
mov dword [esp + 0x48], ecx
mov dword [esp + 0x4c], edx
lea ecx, [0x742ea4]
mov dword [esp + 0x50], ecx
mov dword [esp + 0x54], 0x19
lea edi, [esp + 0x6c]
call fcn.004690fb
lea ecx, [0x71a160]
mov dword [esp], ecx
lea ecx, [esp + 0x48]
mov dword [esp + 4], ecx
call fcn.00409b00
mov ecx, dword [esp + 8]
lea edx, [0x7b0fd4]
mov dword [esp + 0x80], edx
mov dword [esp + 0x84], ecx
add esp, 0x60
ret
lea edi, [esp + 0x48]
xor eax, eax
call fcn.004690fa
mov ecx, dword [esp + 0x64]
mov dword [esp + 0x48], ecx
mov dword [esp + 0x4c], edx
lea ecx, [0x740bc8]
mov dword [esp + 0x50], ecx
mov dword [esp + 0x54], 0x15
lea edi, [esp + 0x6c]
call fcn.004690fb
lea ecx, [0x71a160]
mov dword [esp], ecx
lea ecx, [esp + 0x48]
mov dword [esp + 4], ecx
call fcn.00409b00
mov ecx, dword [esp + 8]
lea edx, [0x7b0fd4]
mov dword [esp + 0x80], edx
mov dword [esp + 0x84], ecx
add esp, 0x60
ret
lea edi, [esp + 0x30]
xor eax, eax
call fcn.004690fa
mov ecx, dword [esp + 0x64]
mov dword [esp + 0x30], ecx
mov dword [esp + 0x34], edx
lea ebp, [0x74a12d]
mov dword [esp + 0x38], ebp
mov dword [esp + 0x3c], 0x27
sub edx, ebx
mov ebp, edx
neg edx
sar edx, 0x1f
and ebx, edx
add ecx, ebx
mov dword [esp + 0x40], ecx
mov dword [esp + 0x44], ebp
lea edi, [esp + 0x48]
lea esi, [esp + 0x30]
call fcn.004695d4
lea edi, [esp + 0x6c]
call fcn.004690fb
lea ecx, [0x71a160]
mov dword [esp], ecx
lea ecx, [esp + 0x48]
mov dword [esp + 4], ecx
call fcn.00409b00
mov ecx, dword [esp + 8]
lea edx, [0x7b0fd4]
mov dword [esp + 0x80], edx
mov dword [esp + 0x84], ecx
add esp, 0x60
ret
lea edi, [esp + 0x18]
xor eax, eax
call fcn.004690fa
mov ecx, dword [esp + 0x64]
mov dword [esp + 0x18], ecx
mov dword [esp + 0x1c], edx
lea ebp, [0x7403ee]
mov dword [esp + 0x20], ebp
mov dword [esp + 0x24], 0x14
sub edx, ebx
mov ebp, edx
neg edx
sar edx, 0x1f
and ebx, edx
add ecx, ebx
mov dword [esp + 0x28], ecx
mov dword [esp + 0x2c], ebp
lea edi, [esp + 0x48]
lea esi, [esp + 0x18]
call fcn.004695d4
lea edi, [esp + 0x6c]
call fcn.004690fb
lea ecx, [0x71a160]
mov dword [esp], ecx
lea ecx, [esp + 0x48]
mov dword [esp + 4], ecx
call fcn.00409b00
mov ecx, dword [esp + 8]
lea edx, [0x7b0fd4]
mov dword [esp + 0x80], edx
mov dword [esp + 0x84], ecx
add esp, 0x60
ret
cmp esi, 3
jge 0x5034f7
lea edi, [esp + 0x48]
call fcn.004690fa
mov ecx, dword [esp + 0x64]
mov dword [esp + 0x48], ecx
mov dword [esp + 0x4c], edx
lea ecx, [0x74144a]
mov dword [esp + 0x50], ecx
mov dword [esp + 0x54], 0x16
lea edi, [esp + 0x6c]
call fcn.004690fb
lea ecx, [0x71a160]
mov dword [esp], ecx
lea ecx, [esp + 0x48]
mov dword [esp + 4], ecx
call fcn.00409b00
mov ecx, dword [esp + 8]
lea edx, [0x7b0fd4]
mov dword [esp + 0x80], edx
mov dword [esp + 0x84], ecx
add esp, 0x60
ret
xchg edi, eax
mov byte [esp + 0xf], al
xchg edi, eax
mov ecx, dword [esp + 0xc]
mov dword [esp + 0x10], ecx
movzx ecx, byte [esp + 0x10]
mov edx, ecx
shr ecx, 8
shl edx, 0x18
movzx ebx, byte [esp + 0x11]
mov ebp, ebx
shl ebx, 0x10
or edx, ebx
shr ebp, 0x10
or ecx, ebp
movzx ebx, byte [esp + 0x12]
mov ebp, ebx
shl ebx, 8
or ebx, edx
shr ebp, 0x18
or ebp, ecx
or ebp, 0xffff
movzx ecx, byte [esp + 0x13]
or ecx, ebx
mov dword [esp + 0x14], ecx
mov edx, dword [0x96e8c4]
lea edi, [esp + 0x6c]
call fcn.004690fb
mov ecx, dword [esp + 0x14]
mov dword [esp + 0x74], ecx
mov dword [esp + 0x78], ebp
mov dword [esp + 0x7c], edx
mov dword [esp + 0x80], 0
mov dword [esp + 0x84], 0
add esp, 0x60
ret
mov eax, esi
mov ecx, 4
call fcn.00468ed0
nop
call fcn.00467a60
jmp fcn.00503190