Function at 0x643720
Capabilities:
Allocate or change rwx memory
Execute shellcode via indirect call

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x30
mov eax, dword [0x748068]
xor eax, ebp
mov dword [ebp - 4], eax
mov eax, dword [ebp + 8]
push ebx
push esi
push edi
mov ebx, ecx
mov dword [ebp - 0x2c], eax
xor edi, edi
call fcn.006436d0
cmp dword [0x7526f8], edi
je 0x643976
mov esi, dword [sym.imp.KERNEL32.dll_VirtualQuery]
lea eax, [ebp - 0x20]
push 0x1c
push eax
push ebx
call esi
cmp dword [ebp - 0x10], 0x1000
jne 0x64396f
test byte [ebp - 0xc], 0xf0
je 0x64396f
push 0x1c
lea eax, [ebp - 0x20]
push eax
push 0x5064c0
call esi
cmp dword [ebp - 0x10], 0x1000
jne 0x64396f
test byte [ebp - 0xc], 0xf0
je 0x64396f
mov ecx, ebx
call fcn.00643260
cmp eax, 0xffffffff
jne 0x643968
mov eax, dword [0x756af8]
test eax, eax
je 0x6437bc
cmp dword [eax + 4], edi
jne 0x643809
mov eax, dword [eax]
test eax, eax
jne 0x6437b1
push 0x40
push 0x3000
push 0x1000
push 0
call dword [sym.imp.KERNEL32.dll_VirtualAlloc]
test eax, eax
je 0x643961
lea edx, [eax + 0x20]
mov dword [eax + 4], edi
mov dword [eax + 8], edi
mov esi, 0x20
mov ecx, dword [eax + 4]
add esi, 0x20
mov dword [edx], ecx
mov dword [eax + 4], edx
add edx, 0x20
cmp esi, 0xfe0
jbe 0x6437e6
mov ecx, dword [0x756af8]
mov dword [eax], ecx
mov dword [0x756af8], eax
test eax, eax
je 0x643961
mov esi, dword [eax + 4]
mov dword [ebp - 0x30], esi
mov dword [ebp - 0x28], ebx
mov dword [ebp - 0x24], 0x5064c0
mov ecx, dword [esi]
inc dword [eax + 8]
mov dword [eax + 4], ecx
lea ecx, [ebp - 0x28]
mov dword [ebp - 0x20], esi
call fcn.00643a90
test eax, eax
je 0x643953
mov ecx, dword [0x756b00]
test ecx, ecx
jne 0x643874
push 0x580
push ecx
push dword [0x7526f8]
mov dword [0x756b04], 0x20
call dword [sym.imp.KERNEL32.dll_HeapAlloc]
mov ecx, eax
mov dword [0x756b00], ecx
test ecx, ecx
je 0x643945
jmp 0x6438b2
mov eax, dword [0x756b08]
mov edx, dword [0x756b04]
cmp eax, edx
jb 0x6438b7
imul eax, edx, 0x58
push eax
push ecx
push 0
push dword [0x7526f8]
call dword [sym.imp.KERNEL32.dll_HeapReAlloc]
mov ecx, eax
test ecx, ecx
je 0x643945
mov eax, dword [0x756b04]
add eax, eax
mov dword [0x756b00], ecx
mov dword [0x756b04], eax
mov eax, dword [0x756b08]
imul esi, eax, 0x2c
inc eax
mov dword [0x756b08], eax
add esi, ecx
je 0x643942
mov eax, dword [ebp - 0x28]
mov edx, dword [ebp - 0x1c]
mov cl, byte [esi + 0x14]
mov dword [esi], eax
and cl, 0xf8
mov eax, dword [ebp - 0x24]
mov dword [esi + 4], eax
mov eax, dword [ebp - 0x20]
mov dword [esi + 8], eax
mov al, dl
and al, 1
or cl, al
mov eax, dword [esi + 0x18]
xor eax, dword [ebp - 0x18]
and eax, 0xf
mov byte [esi + 0x14], cl
xor dword [esi + 0x18], eax
mov eax, dword [ebp - 0x14]
mov dword [esi + 0x1c], eax
mov eax, dword [ebp - 0x10]
mov dword [esi + 0x20], eax
mov eax, dword [ebp - 0xc]
mov dword [esi + 0x24], eax
mov eax, dword [ebp - 8]
mov dword [esi + 0x28], eax
test edx, edx
je 0x643929
mov eax, dword [ebx - 5]
mov dword [esi + 0xc], eax
mov ax, word [ebx - 1]
mov word [esi + 0x10], ax
mov al, byte [ebx + 1]
mov byte [esi + 0x12], al
jmp 0x643934
mov eax, dword [ebx]
mov dword [esi + 0xc], eax
mov al, byte [ebx + 4]
mov byte [esi + 0x10], al
mov eax, dword [ebp - 0x2c]
test eax, eax
je 0x64397b
mov ecx, dword [ebp - 0x20]
mov dword [eax], ecx
jmp 0x64397b
mov esi, dword [ebp - 0x30]
mov ecx, esi
mov edi, 9
call fcn.00643d90
jmp 0x64397b
mov ecx, esi
mov edi, 8
call fcn.00643d90
jmp 0x64397b
mov edi, 9
jmp 0x64397b
mov edi, 3
jmp 0x64397b
mov edi, 7
jmp 0x64397b
mov edi, 2
push 0
push 0x7526f4
call dword [sym.imp.KERNEL32.dll_InterlockedExchange]
mov ecx, dword [ebp - 4]
mov eax, edi
pop edi
pop esi
xor ecx, ebp
pop ebx
call fcn.0064fb08
mov esp, ebp
pop ebp
ret 4