Function at 0x4397e0
Capabilities:
Enumerate pe sections
Validate payment card number using luhn algorithm

Disassembly:
mov eax, dword [esp + 0x18]
push ebx
mov ebx, dword [esp + 0xc]
push ebp
mov ebp, dword [esp + 0x14]
mov dword [eax], 0
mov al, byte [ebx]
push esi
mov esi, dword [esp + 0x10]
push edi
cmp al, 0xa
je 0x439d33
cmp al, 0xd
je 0x439d33
mov ecx, dword [esi + 0xc4]
lea edx, [esi + 0xc4]
mov edi, 4
lea eax, [ecx + 1]
mov dword [edx], eax
test ecx, ecx
jne 0x439c61
mov dword [esi + 0xd0], ecx
mov eax, dword [esi + 0x18]
mov eax, dword [eax + 0x260]
mov eax, dword [eax + 0x48]
test al, 3
je 0x4399f0
mov al, byte [ebx]
mov edi, ebx
test al, al
je 0x439860
nop dword [eax]
cmp al, 0x20
je 0x439858
cmp al, 9
jne 0x439860
mov al, byte [edi + 1]
inc edi
test al, al
jne 0x439850
push 5
push str.HTTP_
push edi
call dword [sym.imp.api_ms_win_crt_string_l1_1_0.dll_strncmp]
add esp, 0xc
test eax, eax
jne 0x439921
movsx ecx, byte [edi + 5]
mov eax, ecx
sub eax, 0x31
je 0x43994e
sub eax, 1
je 0x4398aa
sub eax, 1
je 0x4398aa
push str.Unsupported_HTTP_version_in_response
push esi
call fcn.0042ae10
add esp, 8
mov eax, 1
pop edi
pop esi
pop ebp
pop ebx
ret
mov al, byte [edi + 6]
cmp al, 0x20
je 0x4398b5
cmp al, 9
jne 0x439921
lea eax, [ecx - 0x30]
lea eax, [eax + eax*4]
add eax, eax
mov dword [esi + 0xd0], eax
mov cl, byte [edi + 7]
lea eax, [ecx - 0x30]
cmp al, 9
ja 0x439921
mov dl, byte [edi + 8]
lea eax, [edx - 0x30]
cmp al, 9
ja 0x439921
mov dh, byte [edi + 9]
mov al, dh
sub al, 0x30
cmp al, 9
ja 0x439921
movsx eax, cl
lea ecx, [eax + eax*4]
movsx eax, dl
lea eax, [eax + ecx*2]
lea ecx, [eax + eax*4]
movsx eax, dh
lea eax, [eax + ecx*2]
add eax, 0xffffeb30
mov dword [esi + 0xd4], eax
mov al, byte [edi + 0xa]
cmp al, 0x20
je 0x439ac9
cmp al, 9
je 0x439ac9
cmp al, 0xa
jl 0x439921
cmp al, 0xd
jle 0x439ac9
push ebp
push ebx
push esi
call fcn.00438c50
add esp, 0xc
cmp eax, 1
jne 0x439c8a
mov dword [esi + 0xd4], 0xc8
mov dword [esi + 0xd0], 0xa
jmp 0x439ac9
cmp byte [edi + 6], 0x2e
jne 0x4399d8
mov al, byte [edi + 7]
cmp al, 0x30
je 0x439963
cmp al, 0x31
jne 0x4399d8
mov cl, byte [edi + 8]
cmp cl, 0x20
je 0x439970
cmp cl, 9
jne 0x4399d8
movsx eax, al
sub eax, 0x26
mov dword [esi + 0xd0], eax
mov cl, byte [edi + 9]
lea eax, [ecx - 0x30]
cmp al, 9
ja 0x4399d8
mov dl, byte [edi + 0xa]
lea eax, [edx - 0x30]
cmp al, 9
ja 0x4399d8
mov dh, byte [edi + 0xb]
mov al, dh
sub al, 0x30
cmp al, 9
ja 0x4399d8
movsx eax, cl
lea ecx, [eax + eax*4]
movsx eax, dl
lea eax, [eax + ecx*2]
lea ecx, [eax + eax*4]
movsx eax, dh
lea eax, [eax + ecx*2]
add eax, 0xffffeb30
mov dword [esi + 0xd4], eax
mov al, byte [edi + 0xc]
cmp al, 0x20
je 0x439ac9
cmp al, 9
je 0x439ac9
sub al, 0xa
cmp al, 3
jbe 0x439ac9
push str.Unsupported_HTTP_1_subversion_in_response
push esi
call fcn.0042ae10
add esp, 8
mov eax, 1
pop edi
pop esi
pop ebp
pop ebx
ret
test eax, 0x40000
je 0x439c8a
mov al, byte [ebx]
mov edi, ebx
test al, al
je 0x439a13
cmp al, 0x20
je 0x439a0b
cmp al, 9
jne 0x439a13
mov al, byte [edi + 1]
inc edi
test al, al
jne 0x439a03
push 5
push str.RTSP_
push edi
call dword [sym.imp.api_ms_win_crt_string_l1_1_0.dll_strncmp]
add esp, 0xc
test eax, eax
jne 0x439c8a
mov al, byte [edi + 5]
sub al, 0x30
cmp al, 9
ja 0x439c91
cmp byte [edi + 6], 0x2e
jne 0x439c91
mov al, byte [edi + 7]
sub al, 0x30
cmp al, 9
ja 0x439c91
mov al, byte [edi + 8]
cmp al, 0x20
je 0x439a5f
cmp al, 9
jne 0x439c91
mov cl, byte [edi + 9]
lea eax, [ecx - 0x30]
cmp al, 9
ja 0x439c91
mov dl, byte [edi + 0xa]
lea eax, [edx - 0x30]
cmp al, 9
ja 0x439c91
mov dh, byte [edi + 0xb]
mov al, dh
sub al, 0x30
cmp al, 9
ja 0x439c91
movsx eax, cl
lea ecx, [eax + eax*4]
movsx eax, dl
lea eax, [eax + ecx*2]
lea ecx, [eax + eax*4]
movsx eax, dh
lea eax, [eax + ecx*2]
add eax, 0xffffeb30
mov dword [esi + 0xd4], eax
mov al, byte [edi + 0xc]
cmp al, 0x20
je 0x439abf
cmp al, 9
je 0x439abf
sub al, 0xa
cmp al, 3
ja 0x439c91
mov dword [esi + 0xd0], 0xb
mov ecx, dword [esi + 0xd0]
mov eax, ecx
mov edi, dword [esi + 0x18]
sub eax, 0xa
je 0x439af3
sub eax, 1
je 0x439af3
mov eax, ecx
mov ecx, 0xa
cdq
idiv ecx
mov ecx, edx
mov edx, eax
mov eax, str.Unsupported_HTTP_version___u._d__in_response
jmp 0x439b30
mov al, byte [edi + 0x4d4]
test al, al
je 0x439b46
movzx ecx, al
mov eax, 0xcccccccd
mul ecx
mov eax, 0x66666667
shr edx, 3
mov dword [esp + 0x28], edx
imul dword [esi + 0xd0]
sar edx, 2
mov ecx, edx
shr ecx, 0x1f
add ecx, edx
mov edx, dword [esp + 0x28]
cmp ecx, edx
je 0x439b46
mov eax, str.Version_mismatch__from_HTTP__u_to_HTTP__u_
push ecx
push edx
push eax
push esi
call fcn.0042ae10
add esp, 0x10
mov eax, 1
pop edi
pop esi
pop ebp
pop ebx
ret
mov eax, dword [esi + 0xd4]
mov dword [esi + 0xd08], eax
mov eax, dword [esi + 0xd0]
mov dword [esi + 0xd10], eax
movzx eax, byte [esi + 0xd0]
mov byte [edi + 0x4d4], al
mov al, byte [esi + 0xce5]
test al, al
je 0x439b80
movzx eax, al
cmp eax, dword [esi + 0xd0]
jle 0x439b8c
mov al, byte [esi + 0xd0]
mov byte [esi + 0xce5], al
mov eax, dword [esi + 0xbc8]
or eax, dword [esi + 0xbcc]
je 0x439bb6
cmp byte [esi + 0xce6], 0
jne 0x439bb6
cmp dword [esi + 0xd4], 0x1a0
jne 0x439bb6
mov byte [esi + 0x136], 1
mov eax, dword [esi + 0xd0]
cmp eax, 0xa
jne 0x439bd9
push str.HTTP_1.0__assume_close_after_body
push esi
call fcn.0042aee0
push 1
push edi
call fcn.0042d1c0
add esp, 0x10
jmp 0x439bfc
cmp eax, 0x14
je 0x439bf0
cmp dword [esi + 0xdc], 2
jne 0x439bfc
cmp dword [esi + 0xd4], 0x65
jne 0x439bfc
mov eax, dword [edi + 0x4a8]
mov dword [eax], 2
mov ecx, dword [esi + 0xd4]
lea eax, [ecx - 0x64]
cmp eax, 0x63
setbe al
mov byte [esi + 0x137], al
sub ecx, 0xcc
je 0x439c2d
sub ecx, 0x64
jne 0x439c5c
cmp byte [esi + 0x3b0], cl
je 0x439c2d
mov byte [esi + 0xdc8], 1
mov dword [esi + 0x88], 0
mov dword [esi + 0x8c], 0
mov dword [esi + 0x90], 0
mov dword [esi + 0x94], 0
mov byte [esi + 0x137], 1
mov edi, 0xc
push ebp
push 0
push ebx
call sub.VCRUNTIME140.dll_memchr
add esp, 0xc
test eax, eax
je 0x439c9b
mov eax, str.Nul_byte_in_header
push eax
push esi
call fcn.0042ae10
add esp, 8
mov eax, 8
pop edi
pop esi
pop ebp
pop ebx
ret
mov byte [esi + 0x12d], 0
pop edi
pop esi
pop ebp
mov eax, 8
pop ebx
ret
mov ecx, dword [esi + 0xc4]
cmp ecx, 2
jl 0x439cde
mov al, byte [ebx]
cmp al, 0x20
je 0x439cb0
cmp al, 9
jne 0x439cb5
cmp ecx, 2
jg 0x439cde
push ebp
push 0x3a
push ebx
call sub.VCRUNTIME140.dll_memchr
add esp, 0xc
test eax, eax
jne 0x439cde
mov eax, str.Header_without_colon
push eax
push esi
call fcn.0042ae10
add esp, 8
mov eax, 8
pop edi
pop esi
pop ebp
pop ebx
ret
push ebp
push ebx
push esi
call fcn.00437390
add esp, 0xc
test eax, eax
jne 0x439e12
push ebp
push ebx
push 1
push esi
call fcn.0042ad60
mov eax, dword [esi + 0xd4]
add esp, 0x10
sub eax, 0x64
cmp eax, 0x64
jae 0x439d0f
or edi, 0x20
push ebp
push ebx
push edi
push esi
call fcn.0042bfc0
add esp, 0x10
test eax, eax
jne 0x439e12
push eax
push ebp
push esi
call fcn.004369f0
add esp, 0xc
pop edi
pop esi
pop ebp
pop ebx
ret
push ebp
push ebx
push 1
push esi
call fcn.0042ad60
mov eax, dword [esi + 0xd4]
sub eax, 0x64
cmp eax, 0x64
push ebp
sbb eax, eax
and eax, 0x20
add eax, 4
push ebx
push eax
push esi
call fcn.0042bfc0
add esp, 0x20
test eax, eax
jne 0x439e12
mov ecx, dword [esi + 0xbc]
mov edx, 0x4b000
add ecx, ebp
cmp ebp, edx
jae 0x439da4
mov eax, dword [esi + 0xd48]
add dword [esi + 0xb8], ebp
add eax, ebp
mov dword [esi + 0xd48], eax
mov dword [esi + 0xbc], ecx
cmp ecx, edx
ja 0x439da8
cmp eax, 0x5dc000
jbe 0x439dc2
mov ecx, eax
mov edx, 0x5dc000
jmp 0x439da8
test ecx, ecx
je 0x439dc2
push edx
push ecx
push str.Too_large_response_headers:__zu____u
push esi
call fcn.0042ae10
add esp, 0x10
mov eax, 0x38
pop edi
pop esi
pop ebp
pop ebx
ret
mov eax, dword [esi + 0xd4]
sub eax, 0x64
cmp eax, 0x63
ja 0x439dd8
mov eax, dword [esi + 0xb8]
jmp 0x439dda
xor eax, eax
mov dword [esi + 0xc0], eax
lea eax, [esi + 0x870]
push eax
call fcn.0041ecc0
lea eax, [esp + 0x18]
push eax
push dword [esp + 0x2c]
push dword [esp + 0x2c]
push esi
call fcn.00438da0
add esp, 0x14
test eax, eax
jne 0x439e12
mov ecx, dword [esp + 0x28]
mov eax, dword [esp + 0x14]
add dword [ecx], eax
xor eax, eax
pop edi
pop esi
pop ebp
pop ebx
ret