Function at 0x4b1870
Capabilities:
Compress data via zlib inflate or deflate

Disassembly:
push ebp
mov ebp, esp
sub esp, 0xc
push edi
mov dword [ebp - 4], edx
mov edi, ecx
call fcn.004b1790
test eax, eax
jne 0x4b20c3
push ebx
push esi
mov esi, dword [edi + 0x1c]
cmp dword [edi + 0xc], eax
je 0x4b20af
cmp dword [edi + 4], eax
je 0x4b18a4
cmp dword [edi], eax
je 0x4b20af
mov ebx, dword [esi + 4]
cmp ebx, 0x29a
jne 0x4b18b8
cmp edx, 4
jne 0x4b20af
cmp dword [edi + 0x10], 0
je 0x4b209b
cmp dword [esi + 0x14], 0
mov ecx, dword [esi + 0x28]
mov dword [esi + 0x28], edx
je 0x4b18e4
mov ecx, edi
call fcn.004b1820
cmp dword [edi + 0x10], 0
je 0x4b208b
mov edx, dword [esi + 4]
jmp 0x4b1913
cmp dword [edi + 4], 0
mov edx, ebx
jne 0x4b1913
xor eax, eax
mov dword [ebp - 0xc], 9
cmp ecx, 4
cmovg eax, dword [ebp - 0xc]
add ecx, ecx
sub ecx, eax
mov eax, dword [ebp - 4]
add eax, eax
cmp eax, ecx
jg 0x4b1913
cmp dword [ebp - 4], 4
jne 0x4b209b
cmp edx, 0x29a
jne 0x4b1925
cmp dword [edi + 4], 0
jne 0x4b209b
cmp edx, 0x2a
jne 0x4b19e8
mov ecx, dword [esi + 0x30]
shl ecx, 0xc
sub ecx, 0x7800
cmp dword [esi + 0x88], 2
mov ebx, ecx
jge 0x4b1973
mov eax, dword [esi + 0x84]
cmp eax, 2
jl 0x4b1973
cmp eax, 6
jge 0x4b195d
lea eax, [edx + 0x16]
lea edx, [eax + 0x20]
jmp 0x4b1978
jne 0x4b1969
mov eax, 0x80
lea edx, [eax + 0x20]
jmp 0x4b1978
mov eax, 0xc0
lea edx, [eax + 0x20]
jmp 0x4b1978
xor eax, eax
lea edx, [eax + 0x20]
or ecx, eax
cmp dword [esi + 0x6c], 0
je 0x4b1984
mov ecx, ebx
or ecx, edx
mov eax, 0x8421085
mul ecx
sub ecx, edx
shr ecx, 1
add ecx, edx
shr ecx, 4
inc ecx
mov edx, ecx
shl edx, 5
sub edx, ecx
mov ecx, esi
call fcn.004b17f0
cmp dword [esi + 0x6c], 0
je 0x4b19bf
movzx edx, word [edi + 0x32]
mov ecx, esi
call fcn.004b17f0
movzx edx, word [edi + 0x30]
mov ecx, esi
call fcn.004b17f0
push 0
xor edx, edx
xor ecx, ecx
call fcn.004b37b0
add esp, 4
mov dword [edi + 0x30], eax
mov ecx, edi
mov dword [esi + 4], 0x71
call fcn.004b1820
cmp dword [esi + 0x14], 0
jne 0x4b208b
mov eax, dword [esi + 4]
cmp eax, 0x39
jne 0x4b1bf3
mov dword [edi + 0x30], 0
mov ecx, dword [esi + 0x14]
mov eax, dword [esi + 8]
mov byte [ecx + eax], 0x1f
inc dword [esi + 0x14]
mov ecx, dword [esi + 0x14]
mov eax, dword [esi + 8]
mov byte [ecx + eax], 0x8b
inc dword [esi + 0x14]
mov ecx, dword [esi + 0x14]
mov eax, dword [esi + 8]
mov byte [ecx + eax], 8
inc dword [esi + 0x14]
mov edx, dword [esi + 0x1c]
mov ebx, dword [esi + 0x14]
test edx, edx
jne 0x4b1ac5
mov eax, dword [esi + 8]
mov byte [ebx + eax], dl
inc dword [esi + 0x14]
mov ecx, dword [esi + 0x14]
mov eax, dword [esi + 8]
mov byte [ecx + eax], dl
inc dword [esi + 0x14]
mov ecx, dword [esi + 0x14]
mov eax, dword [esi + 8]
mov byte [ecx + eax], dl
inc dword [esi + 0x14]
mov ecx, dword [esi + 0x14]
mov eax, dword [esi + 8]
mov byte [ecx + eax], dl
inc dword [esi + 0x14]
mov ecx, dword [esi + 0x14]
mov eax, dword [esi + 8]
mov byte [ecx + eax], dl
inc dword [esi + 0x14]
mov eax, dword [esi + 0x84]
mov edx, dword [esi + 0x14]
cmp eax, 9
jne 0x4b1a7b
mov cl, 2
jmp 0x4b1a8f
cmp dword [esi + 0x88], 2
jge 0x4b1a8d
cmp eax, 2
jl 0x4b1a8d
xor cl, cl
jmp 0x4b1a8f
mov cl, 4
mov eax, dword [esi + 8]
mov byte [edx + eax], cl
inc dword [esi + 0x14]
mov ecx, dword [esi + 0x14]
mov eax, dword [esi + 8]
mov byte [ecx + eax], 0xa
mov ecx, edi
inc dword [esi + 0x14]
mov dword [esi + 4], 0x71
call fcn.004b1820
cmp dword [esi + 0x14], 0
jne 0x4b208b
mov eax, dword [esi + 4]
jmp 0x4b1bf3
mov ecx, dword [edx + 0x24]
mov eax, dword [edx + 0x2c]
neg ecx
sbb cl, cl
and cl, 0x10
neg eax
sbb al, al
and al, 2
add cl, al
mov eax, dword [edx + 0x1c]
neg eax
sbb al, al
and al, 8
add cl, al
mov eax, dword [edx + 0x10]
neg eax
sbb al, al
and al, 4
add cl, al
cmp dword [edx], 0
setne al
add cl, al
mov eax, dword [esi + 8]
mov byte [ebx + eax], cl
inc dword [esi + 0x14]
mov edx, dword [esi + 0x14]
mov eax, dword [esi + 0x1c]
mov ecx, dword [esi + 8]
movzx eax, byte [eax + 4]
mov byte [edx + ecx], al
inc dword [esi + 0x14]
mov edx, dword [esi + 0x14]
mov eax, dword [esi + 0x1c]
mov ecx, dword [esi + 8]
movzx eax, byte [eax + 5]
mov byte [edx + ecx], al
inc dword [esi + 0x14]
mov edx, dword [esi + 0x14]
mov eax, dword [esi + 0x1c]
mov ecx, dword [esi + 8]
movzx eax, byte [eax + 6]
mov byte [edx + ecx], al
inc dword [esi + 0x14]
mov eax, dword [esi + 0x1c]
mov edx, dword [esi + 0x14]
mov ecx, dword [esi + 8]
movzx eax, byte [eax + 7]
mov byte [edx + ecx], al
inc dword [esi + 0x14]
mov eax, dword [esi + 0x84]
mov edx, dword [esi + 0x14]
cmp eax, 9
jne 0x4b1b5f
mov cl, 2
jmp 0x4b1b73
cmp dword [esi + 0x88], 2
jge 0x4b1b71
cmp eax, 2
jl 0x4b1b71
xor cl, cl
jmp 0x4b1b73
mov cl, 4
mov eax, dword [esi + 8]
mov byte [edx + eax], cl
inc dword [esi + 0x14]
mov eax, dword [esi + 0x1c]
mov edx, dword [esi + 0x14]
mov ecx, dword [esi + 8]
mov al, byte [eax + 0xc]
mov byte [edx + ecx], al
mov eax, dword [esi + 0x1c]
inc dword [esi + 0x14]
mov ebx, dword [esi + 0x14]
cmp dword [eax + 0x10], 0
je 0x4b1bc0
movzx eax, byte [eax + 0x14]
mov ecx, dword [esi + 8]
mov byte [ebx + ecx], al
inc dword [esi + 0x14]
mov eax, dword [esi + 0x1c]
mov edx, dword [esi + 0x14]
mov ecx, dword [esi + 8]
movzx eax, byte [eax + 0x15]
mov byte [edx + ecx], al
inc dword [esi + 0x14]
mov ebx, dword [esi + 0x14]
mov eax, dword [esi + 0x1c]
cmp dword [eax + 0x2c], 0
je 0x4b1be0
mov edx, dword [esi + 8]
test edx, edx
jne 0x4b1bd1
xor eax, eax
jmp 0x4b1bdd
mov ecx, dword [edi + 0x30]
push ebx
call fcn.004b42b0
add esp, 4
mov dword [edi + 0x30], eax
mov dword [esi + 0x20], 0
mov eax, 0x45
mov dword [esi + 4], 0x45
cmp eax, 0x45
jne 0x4b1cfd
mov eax, dword [esi + 0x1c]
cmp dword [eax + 0x10], 0
je 0x4b1cf1
movzx eax, word [eax + 0x14]
sub eax, dword [esi + 0x20]
mov edx, dword [esi + 0x14]
mov ecx, edx
mov ebx, dword [esi + 0xc]
mov dword [ebp - 8], eax
add eax, edx
mov dword [ebp - 0xc], edx
cmp eax, ebx
jbe 0x4b1c9a
mov eax, dword [esi + 0x1c]
sub ebx, ecx
push ebx
mov eax, dword [eax + 0x10]
add eax, dword [esi + 0x20]
push eax
mov eax, dword [esi + 8]
add eax, ecx
push eax
call sub.VCRUNTIME140.dll_memcpy
mov eax, dword [esi + 0x1c]
add esp, 0xc
mov ecx, dword [esi + 0xc]
mov dword [esi + 0x14], ecx
cmp dword [eax + 0x2c], 0
je 0x4b1c71
mov eax, dword [ebp - 0xc]
cmp ecx, eax
jbe 0x4b1c71
mov edx, dword [esi + 8]
sub ecx, eax
add edx, eax
jne 0x4b1c62
xor eax, eax
jmp 0x4b1c6e
push ecx
mov ecx, dword [edi + 0x30]
call fcn.004b42b0
add esp, 4
mov dword [edi + 0x30], eax
add dword [esi + 0x20], ebx
mov ecx, edi
call fcn.004b1820
mov ecx, dword [esi + 0x14]
test ecx, ecx
jne 0x4b208b
mov eax, dword [ebp - 8]
sub eax, ebx
mov dword [ebp - 0xc], ecx
mov ebx, dword [esi + 0xc]
mov dword [ebp - 8], eax
add eax, ecx
cmp eax, ebx
ja 0x4b1c24
mov eax, dword [esi + 0x1c]
mov edx, dword [esi + 0x20]
mov ebx, dword [ebp - 8]
push ebx
mov eax, dword [eax + 0x10]
add eax, edx
push eax
mov eax, dword [esi + 8]
add eax, ecx
push eax
call sub.VCRUNTIME140.dll_memcpy
mov eax, dword [esi + 0x1c]
add esp, 0xc
add dword [esi + 0x14], ebx
mov ecx, dword [esi + 0x14]
cmp dword [eax + 0x2c], 0
je 0x4b1cea
mov eax, dword [ebp - 0xc]
cmp ecx, eax
jbe 0x4b1cea
mov edx, dword [esi + 8]
sub ecx, eax
add edx, eax
jne 0x4b1cdb
xor eax, eax
jmp 0x4b1ce7
push ecx
mov ecx, dword [edi + 0x30]
call fcn.004b42b0
add esp, 4
mov dword [edi + 0x30], eax
mov dword [esi + 0x20], 0
mov dword [esi + 4], 0x49
mov eax, 0x49
cmp eax, 0x49
jne 0x4b1dca
mov eax, dword [esi + 0x1c]
cmp dword [eax + 0x1c], 0
je 0x4b1dbe
mov ecx, dword [esi + 0x14]
mov ebx, ecx
mov dword [ebp - 0xc], ecx
nop dword [eax + eax]
cmp ebx, dword [esi + 0xc]
jne 0x4b1d63
mov eax, dword [esi + 0x1c]
cmp dword [eax + 0x2c], 0
je 0x4b1d4e
cmp ebx, ecx
jbe 0x4b1d4e
mov edx, dword [esi + 8]
sub ebx, ecx
add edx, ecx
jne 0x4b1d3f
xor eax, eax
jmp 0x4b1d4b
mov ecx, dword [edi + 0x30]
push ebx
call fcn.004b42b0
add esp, 4
mov dword [edi + 0x30], eax
mov ecx, edi
call fcn.004b1820
mov ebx, dword [esi + 0x14]
test ebx, ebx
jne 0x4b208b
mov dword [ebp - 0xc], ebx
mov eax, dword [esi + 0x1c]
mov ecx, dword [esi + 0x20]
mov eax, dword [eax + 0x1c]
mov dl, byte [ecx + eax]
lea eax, [ecx + 1]
mov dword [esi + 0x20], eax
mov eax, dword [esi + 8]
mov byte [ebx + eax], dl
mov ebx, dword [esi + 0x14]
inc ebx
mov dword [esi + 0x14], ebx
test dl, dl
je 0x4b1d8b
mov ecx, dword [ebp - 0xc]
jmp 0x4b1d20
mov eax, dword [esi + 0x1c]
cmp dword [eax + 0x2c], 0
je 0x4b1db7
mov eax, dword [ebp - 0xc]
cmp ebx, eax
jbe 0x4b1db7
mov edx, dword [esi + 8]
sub ebx, eax
add edx, eax
jne 0x4b1da8
xor eax, eax
jmp 0x4b1db4
mov ecx, dword [edi + 0x30]
push ebx
call fcn.004b42b0
add esp, 4
mov dword [edi + 0x30], eax
mov dword [esi + 0x20], 0
mov dword [esi + 4], 0x5b
mov eax, 0x5b
cmp eax, 0x5b
jne 0x4b1e8b
mov eax, dword [esi + 0x1c]
cmp dword [eax + 0x24], 0
je 0x4b1e7f
mov ecx, dword [esi + 0x14]
mov ebx, ecx
mov dword [ebp - 0xc], ecx
cmp ebx, dword [esi + 0xc]
jne 0x4b1e2b
mov eax, dword [esi + 0x1c]
cmp dword [eax + 0x2c], 0
je 0x4b1e16
cmp ebx, ecx
jbe 0x4b1e16
mov edx, dword [esi + 8]
sub ebx, ecx
add edx, ecx
jne 0x4b1e07
xor eax, eax
jmp 0x4b1e13
mov ecx, dword [edi + 0x30]
push ebx
call fcn.004b42b0
add esp, 4
mov dword [edi + 0x30], eax
mov ecx, edi
call fcn.004b1820
mov ebx, dword [esi + 0x14]
test ebx, ebx
jne 0x4b208b
mov dword [ebp - 0xc], ebx
mov eax, dword [esi + 0x1c]
mov ecx, dword [esi + 0x20]
mov eax, dword [eax + 0x24]
mov dl, byte [ecx + eax]
lea eax, [ecx + 1]
mov dword [esi + 0x20], eax
mov eax, dword [esi + 8]
mov byte [ebx + eax], dl
mov ebx, dword [esi + 0x14]
inc ebx
mov dword [esi + 0x14], ebx
test dl, dl
je 0x4b1e53
mov ecx, dword [ebp - 0xc]
jmp 0x4b1de8
mov eax, dword [esi + 0x1c]
cmp dword [eax + 0x2c], 0
je 0x4b1e7f
mov eax, dword [ebp - 0xc]
cmp ebx, eax
jbe 0x4b1e7f
mov edx, dword [esi + 8]
sub ebx, eax
add edx, eax
jne 0x4b1e70
xor eax, eax
jmp 0x4b1e7c
mov ecx, dword [edi + 0x30]
push ebx
call fcn.004b42b0
add esp, 4
mov dword [edi + 0x30], eax
mov dword [esi + 4], 0x67
mov eax, 0x67
cmp eax, 0x67
jne 0x4b1ef2
mov eax, dword [esi + 0x1c]
cmp dword [eax + 0x2c], 0
je 0x4b1eda
mov edx, dword [esi + 0x14]
lea eax, [edx + 2]
cmp eax, dword [esi + 0xc]
jbe 0x4b1eb6
mov ecx, edi
call fcn.004b1820
mov edx, dword [esi + 0x14]
test edx, edx
jne 0x4b208b
mov ecx, dword [esi + 8]
movzx eax, byte [edi + 0x30]
mov byte [edx + ecx], al
inc dword [esi + 0x14]
mov edx, dword [esi + 0x14]
mov ecx, dword [esi + 8]
movzx eax, byte [edi + 0x31]
mov byte [edx + ecx], al
inc dword [esi + 0x14]
mov dword [edi + 0x30], 0
mov ecx, edi
mov dword [esi + 4], 0x71
call fcn.004b1820
cmp dword [esi + 0x14], 0
jne 0x4b208b
cmp dword [edi + 4], 0
mov ebx, dword [ebp - 4]
jne 0x4b1f16
cmp dword [esi + 0x74], 0
jne 0x4b1f16
test ebx, ebx
je 0x4b1fa8
cmp dword [esi + 4], 0x29a
je 0x4b1fa8
mov eax, dword [esi + 0x84]
test eax, eax
jne 0x4b1f29
push ebx
push esi
call fcn.004b2540
jmp 0x4b1f5d
mov ecx, dword [esi + 0x88]
cmp ecx, 2
jne 0x4b1f3f
mov edx, ebx
mov ecx, esi
call fcn.004b3580
jmp 0x4b1f60
cmp ecx, 3
jne 0x4b1f4f
mov edx, ebx
mov ecx, esi
call fcn.004b3230
jmp 0x4b1f60
lea eax, [eax + eax*2]
mov eax, dword [eax*4 + 0x4e2d10]
push ebx
push esi
call eax
add esp, 8
cmp eax, 2
je 0x4b1f6a
cmp eax, 3
jne 0x4b1f71
mov dword [esi + 4], 0x29a
test eax, eax
je 0x4b2085
cmp eax, 2
je 0x4b2085
cmp eax, 1
jne 0x4b1fa8
push 0
push 0
xor edx, edx
mov ecx, esi
call fcn.004b53b0
add esp, 8
mov ecx, edi
call fcn.004b1820
cmp dword [edi + 0x10], 0
je 0x4b208b
cmp ebx, 4
jne 0x4b2092
mov eax, dword [esi + 0x18]
test eax, eax
jg 0x4b1fc2
pop esi
lea eax, [ebx - 3]
pop ebx
pop edi
mov esp, ebp
pop ebp
ret
cmp eax, 2
jne 0x4b204d
mov edx, dword [esi + 0x14]
movzx eax, byte [edi + 0x30]
mov ecx, dword [esi + 8]
mov byte [edx + ecx], al
inc dword [esi + 0x14]
mov edx, dword [esi + 0x14]
movzx eax, byte [edi + 0x31]
mov ecx, dword [esi + 8]
mov byte [edx + ecx], al
inc dword [esi + 0x14]
mov edx, dword [esi + 0x14]
movzx eax, byte [edi + 0x32]
mov ecx, dword [esi + 8]
mov byte [edx + ecx], al
inc dword [esi + 0x14]
mov edx, dword [esi + 0x14]
movzx eax, byte [edi + 0x33]
mov ecx, dword [esi + 8]
mov byte [edx + ecx], al
inc dword [esi + 0x14]
mov edx, dword [esi + 0x14]
movzx eax, byte [edi + 8]
mov ecx, dword [esi + 8]
mov byte [edx + ecx], al
inc dword [esi + 0x14]
mov edx, dword [esi + 0x14]
mov ecx, dword [esi + 8]
movzx eax, byte [edi + 9]
mov byte [edx + ecx], al
inc dword [esi + 0x14]
mov edx, dword [esi + 0x14]
mov ecx, dword [esi + 8]
movzx eax, byte [edi + 0xa]
mov byte [edx + ecx], al
inc dword [esi + 0x14]
mov edx, dword [esi + 0x14]
mov ecx, dword [esi + 8]
movzx eax, byte [edi + 0xb]
mov byte [edx + ecx], al
inc dword [esi + 0x14]
jmp 0x4b2063
movzx edx, word [edi + 0x32]
mov ecx, esi
call fcn.004b17f0
movzx edx, word [edi + 0x30]
mov ecx, esi
call fcn.004b17f0
mov ecx, edi
call fcn.004b1820
mov eax, dword [esi + 0x18]
test eax, eax
jle 0x4b2076
neg eax
mov dword [esi + 0x18], eax
xor eax, eax
cmp dword [esi + 0x14], eax
pop esi
pop ebx
sete al
pop edi
mov esp, ebp
pop ebp
ret
cmp dword [edi + 0x10], 0
jne 0x4b2092
mov dword [esi + 0x28], 0xffffffff
pop esi
pop ebx
xor eax, eax
pop edi
mov esp, ebp
pop ebp
ret
mov eax, dword [str.buffer_error]
pop esi
mov dword [edi + 0x18], eax
mov eax, 0xfffffffb
pop ebx
pop edi
mov esp, ebp
pop ebp
ret
mov eax, dword [str.stream_error]
pop esi
mov dword [edi + 0x18], eax
mov eax, 0xfffffffe
pop ebx
pop edi
mov esp, ebp
pop ebp
ret
mov eax, 0xfffffffe
pop edi
mov esp, ebp
pop ebp
ret