Function at 0x50397e
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 0x5039ad
mov dword [ebp - 0x2c], ebx
mov byte [ebp - 1], 0x10
jmp 0x5039b7
mov dword [ebp - 0x2c], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.00506064
test eax, eax
pop ecx
je 0x5039d2
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004e889f
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.004ee137
test eax, eax
pop ecx
je 0x5039ed
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004e889f
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x503a0a
test ecx, 0x74000
jne 0x503a06
cmp dword [ebp - 0x24], eax
je 0x503a0a
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, Ordinal_4
je 0x503a64
dec eax
je 0x503a4e
dec eax
je 0x503a49
call fcn.004ea822
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004ea80f
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.004e899b
add esp, 0x14
jmp 0x504016
mov dword [ebp - 8], edx
jmp 0x503a67
test cl, 8
je 0x503a5b
test ecx, 0x70000
jne 0x503a49
mov dword [ebp - 8], 0x40000000
jmp 0x503a67
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x503aa8
sub eax, ecx
je 0x503a9f
sub eax, ecx
je 0x503a96
sub eax, ecx
je 0x503a8d
sub eax, 0x40
jne 0x503a23
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x503aab
mov dword [ebp - 0x10], 3
jmp 0x503aab
mov dword [ebp - 0x10], 2
jmp 0x503aab
mov dword [ebp - 0x10], 1
jmp 0x503aab
mov dword [ebp - 0x10], ebx
mov eax, dword [ebp + 0x10]
mov edx, 0x700
and eax, edx
mov ecx, 0x400
cmp eax, ecx
mov edi, 0x100
jg 0x503afe
je 0x503af5
cmp eax, ebx
je 0x503af5
cmp eax, edi
je 0x503aec
cmp eax, 0x200
je 0x503b71
cmp eax, 0x300
jne 0x503a23
mov dword [ebp - 0x14], 2
jmp 0x503b1b
mov dword [ebp - 0x14], 4
jmp 0x503b1b
mov dword [ebp - 0x14], 3
jmp 0x503b1b
cmp eax, 0x500
je 0x503b14
cmp eax, 0x600
je 0x503b71
cmp eax, edx
jne 0x503a23
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x503b3f
mov ecx, dword [0x54bde4]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x503b3f
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x503b5b
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x503b5b
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x503b64
or dword [ebp - 0xc], edi
test al, 0x20
je 0x503b7a
or dword [ebp - 0xc], 0x8000000
jmp 0x503b85
mov dword [ebp - 0x14], 5
jmp 0x503b1b
test al, 0x10
je 0x503b85
or dword [ebp - 0xc], 0x10000000
call fcn.0050172f
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x503bab
call fcn.004ea822
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004ea80f
mov dword [eax], 0x18
jmp 0x503c39
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 0x503c45
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x503c11
test byte [ebp + 0x10], 1
je 0x503c11
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 0x503c45
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x54d720]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004ea835
pop ecx
call fcn.004ea80f
mov eax, dword [eax]
jmp 0x5040d2
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x503c96
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x54d720]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.004ea835
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x503c39
call fcn.004ea80f
mov dword [eax], 0xd
jmp 0x503c39
cmp eax, 2
jne 0x503ca1
or byte [ebp - 1], 0x40
jmp 0x503caa
cmp eax, 3
jne 0x503caa
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.005014fe
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x54d720]
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 + 0x54d720]
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 0x503d7f
test cl, 0x80
je 0x503e4f
test byte [ebp + 0x10], 2
je 0x503d7f
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.004f44c9
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x503d3e
call fcn.004ea822
cmp dword [eax], 0x83
je 0x503d7f
push dword [esi]
call fcn.004f75fe
jmp 0x503c38
push 1
lea eax, [ebp - 4]
push eax
push dword [esi]
mov byte [ebp - 4], bl
call fcn.004fc0e0
add esp, 0xc
test eax, eax
jne 0x503d6f
cmp byte [ebp - 4], 0x1a
jne 0x503d6f
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.00505df4
add esp, 0xc
cmp eax, edi
je 0x503d32
push ebx
push ebx
push dword [esi]
call fcn.004f44c9
add esp, 0xc
cmp eax, edi
je 0x503d32
test byte [ebp - 1], 0x80
je 0x503e4f
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x503da7
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x503da4
or dword [ebp + 0x10], edi
jmp 0x503da7
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x503df4
cmp eax, 0x10000
je 0x503de0
cmp eax, 0x14000
je 0x503de0
cmp eax, 0x20000
je 0x503dee
cmp eax, 0x24000
je 0x503dee
cmp eax, 0x40000
je 0x503dda
cmp eax, 0x44000
jne 0x503df7
mov byte [ebp - 2], 1
jmp 0x503df7
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x503df7
mov byte [ebp - 2], 2
jmp 0x503df7
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x503e4f
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x503e4f
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x503fa9
cmp eax, 0x80000000
je 0x503f70
cmp eax, ecx
jne 0x503e4f
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x503e4f
cmp eax, 2
jbe 0x504051
cmp eax, 4
jbe 0x503f42
cmp eax, 5
je 0x504051
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x54d720]
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 + 0x54d720]
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 0x503ec1
test byte [ebp + 0x10], 8
je 0x503ec1
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x54d720]
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 0x5040d0
test byte [ebp + 0x10], 1
je 0x5040d0
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 0x5040b9
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004ea835
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x54d720]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.0050157b
pop ecx
jmp 0x503c38
push 2
push ebx
push ebx
push dword [esi]
call fcn.004fba2b
add esp, 0x10
or eax, edx
je 0x504051
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004fba2b
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x503d32
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.004fc0e0
add esp, 0xc
cmp eax, 0xffffffff
je 0x503d32
cmp eax, 2
je 0x503ff5
cmp eax, 3
jne 0x504043
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x503ff5
mov byte [ebp - 2], 1
jmp 0x503e4f
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x503e4f
cmp eax, 2
jbe 0x504051
cmp eax, 4
ja 0x503e46
push 2
push ebx
push ebx
push dword [esi]
call fcn.004fba2b
add esp, 0x10
or eax, edx
je 0x504051
push ebx
push ebx
push ebx
push dword [esi]
call fcn.004fba2b
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x503e4f
jmp 0x503d32
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x50401d
push dword [esi]
call fcn.004f75fe
pop ecx
call fcn.004ea80f
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x5040d2
cmp eax, 0xfeff
jne 0x504043
push ebx
push 2
push dword [esi]
call fcn.004f44c9
add esp, 0xc
cmp eax, 0xffffffff
je 0x503d32
mov byte [ebp - 2], 2
jmp 0x503e4f
push ebx
push ebx
push dword [esi]
call fcn.004f44c9
add esp, 0xc
jmp 0x503fe7
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x504071
dec eax
jne 0x503e4f
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x50407f
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.004f59ac
add esp, 0xc
cmp eax, 0xffffffff
je 0x5040a5
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x50407f
jmp 0x503e4f
push dword [esi]
call fcn.004f75fe
pop ecx
call fcn.004ea80f
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x5040d2
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x54d720]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret