Function at 0x4d9b87
Capabilities:
Encrypt data using speck

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x38
push ebx
xor ebx, ebx
test byte [ebp + 0x10], 0x80
push esi
push edi
mov esi, eax
mov dword [ebp - 0x24], ebx
mov dword [ebp - 0x28], ebx
mov byte [ebp - 2], bl
mov dword [ebp - 0x38], 0xc
mov dword [ebp - 0x34], ebx
je 0x4d9bb6
mov dword [ebp - 0x30], ebx
mov byte [ebp - 1], 0x10
jmp 0x4d9bc0
mov dword [ebp - 0x30], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.004dbcc6
test eax, eax
pop ecx
je 0x4d9bdb
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004be932
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.004bd709
test eax, eax
pop ecx
je 0x4d9bf6
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004be932
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x4d9c13
test ecx, 0x74000
jne 0x4d9c0f
cmp dword [ebp - 0x24], eax
je 0x4d9c13
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, SysReAllocString
je 0x4d9c6d
dec eax
je 0x4d9c57
dec eax
je 0x4d9c52
call fcn.004c0921
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004c090e
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.004bea2e
add esp, 0x14
jmp 0x4da220
mov dword [ebp - 8], edx
jmp 0x4d9c70
test cl, 8
je 0x4d9c64
test ecx, 0x70000
jne 0x4d9c52
mov dword [ebp - 8], 0x40000000
jmp 0x4d9c70
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x4d9cb1
sub eax, ecx
je 0x4d9ca8
sub eax, ecx
je 0x4d9c9f
sub eax, ecx
je 0x4d9c96
sub eax, 0x40
jne 0x4d9c2c
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x4d9cb4
mov dword [ebp - 0x10], 3
jmp 0x4d9cb4
mov dword [ebp - 0x10], 2
jmp 0x4d9cb4
mov dword [ebp - 0x10], 1
jmp 0x4d9cb4
mov dword [ebp - 0x10], ebx
mov eax, dword [ebp + 0x10]
mov edx, 0x700
and eax, edx
mov ecx, 0x400
cmp eax, ecx
mov edi, pe_nt_image_headers32
jg 0x4d9d07
je 0x4d9cfe
cmp eax, ebx
je 0x4d9cfe
cmp eax, edi
je 0x4d9cf5
cmp eax, 0x200
je 0x4d9d7a
cmp eax, 0x300
jne 0x4d9c2c
mov dword [ebp - 0x14], 2
jmp 0x4d9d24
mov dword [ebp - 0x14], 4
jmp 0x4d9d24
mov dword [ebp - 0x14], 3
jmp 0x4d9d24
cmp eax, 0x500
je 0x4d9d1d
cmp eax, 0x600
je 0x4d9d7a
cmp eax, edx
jne 0x4d9c2c
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x4d9d48
mov ecx, dword [0x50cfbc]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x4d9d48
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x4d9d64
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x4d9d64
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x4d9d6d
or dword [ebp - 0xc], edi
test al, 0x20
je 0x4d9d83
or dword [ebp - 0xc], 0x8000000
jmp 0x4d9d8e
mov dword [ebp - 0x14], 5
jmp 0x4d9d24
test al, 0x10
je 0x4d9d8e
or dword [ebp - 0xc], 0x10000000
call fcn.004d8bde
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x4d9db4
call fcn.004c0921
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004c090e
mov dword [eax], 0x18
jmp 0x4d9e42
mov eax, dword [ebp + 8]
mov edi, dword [sym.imp.KERNEL32.DLL_CreateFileW]
push ebx
push dword [ebp - 0xc]
mov dword [eax], 1
push dword [ebp - 0x14]
lea eax, [ebp - 0x38]
push eax
push dword [ebp - 0x10]
push dword [ebp - 8]
push dword [ebp + 0xc]
call edi
cmp eax, 0xffffffff
mov dword [ebp - 0x1c], eax
jne 0x4d9e4e
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x4d9e1a
test byte [ebp + 0x10], 1
je 0x4d9e1a
and dword [ebp - 8], 0x7fffffff
push ebx
push dword [ebp - 0xc]
lea eax, [ebp - 0x38]
push dword [ebp - 0x14]
push eax
push dword [ebp - 0x10]
push dword [ebp - 8]
push dword [ebp + 0xc]
call edi
cmp eax, 0xffffffff
mov dword [ebp - 0x1c], eax
jne 0x4d9e4e
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x50e8e0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.DLL_GetLastError]
push eax
call fcn.004c0934
pop ecx
call fcn.004c090e
mov eax, dword [eax]
jmp 0x4da2dc
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.DLL_GetFileType]
cmp eax, ebx
jne 0x4d9e9f
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x50e8e0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.DLL_GetLastError]
mov esi, eax
push esi
call fcn.004c0934
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.DLL_CloseHandle]
cmp esi, ebx
jne 0x4d9e42
call fcn.004c090e
mov dword [eax], 0xd
jmp 0x4d9e42
cmp eax, 2
jne 0x4d9eaa
or byte [ebp - 1], 0x40
jmp 0x4d9eb3
cmp eax, 3
jne 0x4d9eb3
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.004d89ad
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x50e8e0]
pop ecx
pop ecx
mov cl, byte [ebp - 1]
or cl, 1
mov byte [edx + eax + 4], cl
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x50e8e0]
lea eax, [edx + eax + 0x24]
and byte [eax], 0x80
mov byte [ebp - 3], cl
and byte [ebp - 3], 0x48
mov byte [ebp - 1], cl
jne 0x4d9f89
test cl, 0x80
je 0x4da059
test byte [ebp + 0x10], 2
je 0x4d9f89
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.004d3263
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x4d9f47
call fcn.004c0921
cmp dword [eax], 0x83
je 0x4d9f89
push dword [esi]
call fcn.004d2a2a
jmp 0x4d9e41
push 1
lea eax, [ebp - 0x2c]
push eax
push dword [esi]
mov dword [ebp - 0x2c], ebx
call fcn.004d34d1
add esp, 0xc
test eax, eax
jne 0x4d9f79
cmp word [ebp - 0x2c], 0x1a
jne 0x4d9f79
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.004dba56
add esp, 0xc
cmp eax, edi
je 0x4d9f3b
push ebx
push ebx
push dword [esi]
call fcn.004d3263
add esp, 0xc
cmp eax, edi
je 0x4d9f3b
test byte [ebp - 1], 0x80
je 0x4da059
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x4d9fb1
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x4d9fae
or dword [ebp + 0x10], edi
jmp 0x4d9fb1
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x4d9ffe
cmp eax, 0x10000
je 0x4d9fea
cmp eax, 0x14000
je 0x4d9fea
cmp eax, 0x20000
je 0x4d9ff8
cmp eax, 0x24000
je 0x4d9ff8
cmp eax, 0x40000
je 0x4d9fe4
cmp eax, 0x44000
jne 0x4da001
mov byte [ebp - 2], 1
jmp 0x4da001
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x4da001
mov byte [ebp - 2], 2
jmp 0x4da001
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x4da059
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x4da059
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x4da1b3
cmp eax, 0x80000000
je 0x4da17a
cmp eax, ecx
jne 0x4da059
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4da059
cmp eax, 2
jbe 0x4da25b
cmp eax, 4
jbe 0x4da14c
cmp eax, 5
je 0x4da25b
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x50e8e0]
lea eax, [ecx + eax + 0x24]
mov cl, byte [eax]
xor cl, byte [ebp - 2]
and cl, 0x7f
xor byte [eax], cl
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x50e8e0]
lea eax, [ecx + eax + 0x24]
mov ecx, dword [ebp + 0x10]
mov dl, byte [eax]
shr ecx, 0x10
shl cl, 7
and dl, 0x7f
or cl, dl
cmp byte [ebp - 3], bl
mov byte [eax], cl
jne 0x4da0cb
test byte [ebp + 0x10], 8
je 0x4da0cb
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x50e8e0]
lea eax, [ecx + eax + 4]
or byte [eax], 0x20
mov edi, dword [ebp - 8]
mov eax, 0xc0000000
mov ecx, edi
and ecx, eax
cmp ecx, eax
jne 0x4da2da
test byte [ebp + 0x10], 1
je 0x4da2da
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.DLL_CloseHandle]
push ebx
push dword [ebp - 0xc]
lea eax, [ebp - 0x38]
push 3
push eax
push dword [ebp - 0x10]
and edi, 0x7fffffff
push edi
push dword [ebp + 0xc]
call dword [sym.imp.KERNEL32.DLL_CreateFileW]
cmp eax, 0xffffffff
jne 0x4da2c3
call dword [sym.imp.KERNEL32.DLL_GetLastError]
push eax
call fcn.004c0934
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x50e8e0]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.004d8a2a
pop ecx
jmp 0x4d9e41
push 2
push ebx
push ebx
push dword [esi]
call fcn.004d699d
add esp, 0x10
or eax, edx
je 0x4da25b
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004d699d
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x4d9f3b
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.004d34d1
add esp, 0xc
cmp eax, 0xffffffff
je 0x4d9f3b
cmp eax, 2
je 0x4da1ff
cmp eax, 3
jne 0x4da24d
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x4da1ff
mov byte [ebp - 2], 1
jmp 0x4da059
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x4da059
cmp eax, 2
jbe 0x4da25b
cmp eax, 4
ja 0x4da050
push 2
push ebx
push ebx
push dword [esi]
call fcn.004d699d
add esp, 0x10
or eax, edx
je 0x4da25b
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004d699d
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x4da059
jmp 0x4d9f3b
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x4da227
push dword [esi]
call fcn.004d2a2a
pop ecx
call fcn.004c090e
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x4da2dc
cmp eax, 0xfeff
jne 0x4da24d
push ebx
push 2
push dword [esi]
call fcn.004d3263
add esp, 0xc
cmp eax, 0xffffffff
je 0x4d9f3b
mov byte [ebp - 2], 2
jmp 0x4da059
push ebx
push ebx
push dword [esi]
call fcn.004d3263
add esp, 0xc
jmp 0x4da1f1
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x4da27b
dec eax
jne 0x4da059
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x4da289
mov dword [ebp - 0x18], 0xbfbbef
mov dword [ebp - 0x14], 3
mov eax, dword [ebp - 0x14]
sub eax, edi
push eax
lea eax, [ebp + edi - 0x18]
push eax
push dword [esi]
call fcn.004d4b46
add esp, 0xc
cmp eax, 0xffffffff
je 0x4da2af
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x4da289
jmp 0x4da059
push dword [esi]
call fcn.004d2a2a
pop ecx
call fcn.004c090e
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x4da2dc
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x50e8e0]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret