Function at 0x518190
Capabilities:
Encrypt data using speck

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x34
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 - 0x34], 0xc
mov dword [ebp - 0x30], ebx
je 0x5181bf
mov dword [ebp - 0x2c], ebx
mov byte [ebp - 1], 0x10
jmp 0x5181c9
mov dword [ebp - 0x2c], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.0051b656
test eax, eax
pop ecx
je 0x5181e4
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004fec61
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.005089b0
test eax, eax
pop ecx
je 0x5181ff
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004fec61
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x51821c
test ecx, 0x74000
jne 0x518218
cmp dword [ebp - 0x24], eax
je 0x51821c
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, 0x80000000
je 0x518276
dec eax
je 0x518260
dec eax
je 0x51825b
call fcn.00505ab7
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.00505aa4
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.004fed5d
add esp, 0x14
jmp 0x518828
mov dword [ebp - 8], edx
jmp 0x518279
test cl, 8
je 0x51826d
test ecx, 0x70000
jne 0x51825b
mov dword [ebp - 8], 0x40000000
jmp 0x518279
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x5182ba
sub eax, ecx
je 0x5182b1
sub eax, ecx
je 0x5182a8
sub eax, ecx
je 0x51829f
sub eax, 0x40
jne 0x518235
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x5182bd
mov dword [ebp - 0x10], 3
jmp 0x5182bd
mov dword [ebp - 0x10], 2
jmp 0x5182bd
mov dword [ebp - 0x10], 1
jmp 0x5182bd
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 0x518310
je 0x518307
cmp eax, ebx
je 0x518307
cmp eax, edi
je 0x5182fe
cmp eax, 0x200
je 0x518383
cmp eax, 0x300
jne 0x518235
mov dword [ebp - 0x14], 2
jmp 0x51832d
mov dword [ebp - 0x14], 4
jmp 0x51832d
mov dword [ebp - 0x14], 3
jmp 0x51832d
cmp eax, 0x500
je 0x518326
cmp eax, 0x600
je 0x518383
cmp eax, edx
jne 0x518235
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x518351
mov ecx, dword [0x5b9520]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x518351
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x51836d
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x51836d
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x518376
or dword [ebp - 0xc], edi
test al, 0x20
je 0x51838c
or dword [ebp - 0xc], 0x8000000
jmp 0x518397
mov dword [ebp - 0x14], 5
jmp 0x51832d
test al, 0x10
je 0x518397
or dword [ebp - 0xc], 0x10000000
call fcn.00516472
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x5183bd
call fcn.00505ab7
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.00505aa4
mov dword [eax], 0x18
jmp 0x51844b
mov eax, dword [ebp + 8]
mov edi, dword [sym.imp.KERNEL32.dll_CreateFileA]
push ebx
push dword [ebp - 0xc]
mov dword [eax], 1
push dword [ebp - 0x14]
lea eax, [ebp - 0x34]
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 0x518457
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x518423
test byte [ebp + 0x10], 1
je 0x518423
and dword [ebp - 8], 0x7fffffff
push ebx
push dword [ebp - 0xc]
lea eax, [ebp - 0x34]
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 0x518457
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x5bebc0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.00505aca
pop ecx
call fcn.00505aa4
mov eax, dword [eax]
jmp 0x5188e4
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x5184a8
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x5bebc0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.00505aca
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x51844b
call fcn.00505aa4
mov dword [eax], 0xd
jmp 0x51844b
cmp eax, 2
jne 0x5184b3
or byte [ebp - 1], 0x40
jmp 0x5184bc
cmp eax, 3
jne 0x5184bc
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.00516241
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x5bebc0]
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 + 0x5bebc0]
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 0x518591
test cl, 0x80
je 0x518661
test byte [ebp + 0x10], 2
je 0x518591
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.0050fe7c
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x518550
call fcn.00505ab7
cmp dword [eax], 0x83
je 0x518591
push dword [esi]
call fcn.0050bfb3
jmp 0x51844a
push 1
lea eax, [ebp - 4]
push eax
push dword [esi]
mov byte [ebp - 4], bl
call fcn.0050c414
add esp, 0xc
test eax, eax
jne 0x518581
cmp byte [ebp - 4], 0x1a
jne 0x518581
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.0051b3e6
add esp, 0xc
cmp eax, edi
je 0x518544
push ebx
push ebx
push dword [esi]
call fcn.0050fe7c
add esp, 0xc
cmp eax, edi
je 0x518544
test byte [ebp - 1], 0x80
je 0x518661
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x5185b9
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x5185b6
or dword [ebp + 0x10], edi
jmp 0x5185b9
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x518606
cmp eax, 0x10000
je 0x5185f2
cmp eax, 0x14000
je 0x5185f2
cmp eax, 0x20000
je 0x518600
cmp eax, 0x24000
je 0x518600
cmp eax, 0x40000
je 0x5185ec
cmp eax, 0x44000
jne 0x518609
mov byte [ebp - 2], 1
jmp 0x518609
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x518609
mov byte [ebp - 2], 2
jmp 0x518609
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x518661
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x518661
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x5187bb
cmp eax, 0x80000000
je 0x518782
cmp eax, ecx
jne 0x518661
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x518661
cmp eax, 2
jbe 0x518863
cmp eax, 4
jbe 0x518754
cmp eax, 5
je 0x518863
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x5bebc0]
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 + 0x5bebc0]
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 0x5186d3
test byte [ebp + 0x10], 8
je 0x5186d3
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x5bebc0]
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 0x5188e2
test byte [ebp + 0x10], 1
je 0x5188e2
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
push ebx
push dword [ebp - 0xc]
lea eax, [ebp - 0x34]
push 3
push eax
push dword [ebp - 0x10]
and edi, 0x7fffffff
push edi
push dword [ebp + 0xc]
call dword [sym.imp.KERNEL32.dll_CreateFileA]
cmp eax, 0xffffffff
jne 0x5188cb
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.00505aca
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x5bebc0]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.005162be
pop ecx
jmp 0x51844a
push 2
push ebx
push ebx
push dword [esi]
call fcn.00513aa6
add esp, 0x10
or eax, edx
je 0x518863
push ebx
push ebx
push ebx
push dword [esi]
call fcn.00513aa6
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x518544
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.0050c414
add esp, 0xc
cmp eax, 0xffffffff
je 0x518544
cmp eax, 2
je 0x518807
cmp eax, 3
jne 0x518855
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x518807
mov byte [ebp - 2], 1
jmp 0x518661
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x518661
cmp eax, 2
jbe 0x518863
cmp eax, 4
ja 0x518658
push 2
push ebx
push ebx
push dword [esi]
call fcn.00513aa6
add esp, 0x10
or eax, edx
je 0x518863
push ebx
push ebx
push ebx
push dword [esi]
call fcn.00513aa6
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x518661
jmp 0x518544
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x51882f
push dword [esi]
call fcn.0050bfb3
pop ecx
call fcn.00505aa4
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x5188e4
cmp eax, 0xfeff
jne 0x518855
push ebx
push 2
push dword [esi]
call fcn.0050fe7c
add esp, 0xc
cmp eax, 0xffffffff
je 0x518544
mov byte [ebp - 2], 2
jmp 0x518661
push ebx
push ebx
push dword [esi]
call fcn.0050fe7c
add esp, 0xc
jmp 0x5187f9
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x518883
dec eax
jne 0x518661
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x518891
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.00514208
add esp, 0xc
cmp eax, 0xffffffff
je 0x5188b7
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x518891
jmp 0x518661
push dword [esi]
call fcn.0050bfb3
pop ecx
call fcn.00505aa4
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x5188e4
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x5bebc0]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret