Function at 0x507c9b
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 0x507cca
mov dword [ebp - 0x2c], ebx
mov byte [ebp - 1], 0x10
jmp 0x507cd4
mov dword [ebp - 0x2c], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.004f6f11
test eax, eax
pop ecx
je 0x507cef
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004ee9ae
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.004f47d0
test eax, eax
pop ecx
je 0x507d0a
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004ee9ae
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x507d27
test ecx, 0x74000
jne 0x507d23
cmp dword [ebp - 0x24], eax
je 0x507d27
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, SysReAllocString
je 0x507d81
dec eax
je 0x507d6b
dec eax
je 0x507d66
call fcn.004f5df3
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004f5de0
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.004eeaaa
add esp, 0x14
jmp 0x508333
mov dword [ebp - 8], edx
jmp 0x507d84
test cl, 8
je 0x507d78
test ecx, 0x70000
jne 0x507d66
mov dword [ebp - 8], 0x40000000
jmp 0x507d84
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x507dc5
sub eax, ecx
je 0x507dbc
sub eax, ecx
je 0x507db3
sub eax, ecx
je 0x507daa
sub eax, 0x40
jne 0x507d40
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x507dc8
mov dword [ebp - 0x10], 3
jmp 0x507dc8
mov dword [ebp - 0x10], 2
jmp 0x507dc8
mov dword [ebp - 0x10], 1
jmp 0x507dc8
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 0x507e1b
je 0x507e12
cmp eax, ebx
je 0x507e12
cmp eax, edi
je 0x507e09
cmp eax, 0x200
je 0x507e8e
cmp eax, 0x300
jne 0x507d40
mov dword [ebp - 0x14], 2
jmp 0x507e38
mov dword [ebp - 0x14], 4
jmp 0x507e38
mov dword [ebp - 0x14], 3
jmp 0x507e38
cmp eax, 0x500
je 0x507e31
cmp eax, 0x600
je 0x507e8e
cmp eax, edx
jne 0x507d40
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x507e5c
mov ecx, dword [0x55db74]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x507e5c
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x507e78
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x507e78
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x507e81
or dword [ebp - 0xc], edi
test al, 0x20
je 0x507e97
or dword [ebp - 0xc], 0x8000000
jmp 0x507ea2
mov dword [ebp - 0x14], 5
jmp 0x507e38
test al, 0x10
je 0x507ea2
or dword [ebp - 0xc], 0x10000000
call fcn.004f1c9b
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x507ec8
call fcn.004f5df3
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004f5de0
mov dword [eax], 0x18
jmp 0x507f56
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 0x507f62
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x507f2e
test byte [ebp + 0x10], 1
je 0x507f2e
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 0x507f62
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x55eec0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004f5e06
pop ecx
call fcn.004f5de0
mov eax, dword [eax]
jmp 0x5083ef
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x507fb3
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x55eec0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.004f5e06
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x507f56
call fcn.004f5de0
mov dword [eax], 0xd
jmp 0x507f56
cmp eax, 2
jne 0x507fbe
or byte [ebp - 1], 0x40
jmp 0x507fc7
cmp eax, 3
jne 0x507fc7
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.004f1a6a
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x55eec0]
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 + 0x55eec0]
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 0x50809c
test cl, 0x80
je 0x50816c
test byte [ebp + 0x10], 2
je 0x50809c
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.004fc29c
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x50805b
call fcn.004f5df3
cmp dword [eax], 0x83
je 0x50809c
push dword [esi]
call fcn.004fbe7b
jmp 0x507f55
push 1
lea eax, [ebp - 4]
push eax
push dword [esi]
mov byte [ebp - 4], bl
call fcn.004fd265
add esp, 0xc
test eax, eax
jne 0x50808c
cmp byte [ebp - 4], 0x1a
jne 0x50808c
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.004f1344
add esp, 0xc
cmp eax, edi
je 0x50804f
push ebx
push ebx
push dword [esi]
call fcn.004fc29c
add esp, 0xc
cmp eax, edi
je 0x50804f
test byte [ebp - 1], 0x80
je 0x50816c
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x5080c4
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x5080c1
or dword [ebp + 0x10], edi
jmp 0x5080c4
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x508111
cmp eax, 0x10000
je 0x5080fd
cmp eax, 0x14000
je 0x5080fd
cmp eax, 0x20000
je 0x50810b
cmp eax, 0x24000
je 0x50810b
cmp eax, 0x40000
je 0x5080f7
cmp eax, 0x44000
jne 0x508114
mov byte [ebp - 2], 1
jmp 0x508114
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x508114
mov byte [ebp - 2], 2
jmp 0x508114
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x50816c
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x50816c
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x5082c6
cmp eax, 0x80000000
je 0x50828d
cmp eax, ecx
jne 0x50816c
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x50816c
cmp eax, 2
jbe 0x50836e
cmp eax, 4
jbe 0x50825f
cmp eax, 5
je 0x50836e
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55eec0]
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 + 0x55eec0]
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 0x5081de
test byte [ebp + 0x10], 8
je 0x5081de
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55eec0]
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 0x5083ed
test byte [ebp + 0x10], 1
je 0x5083ed
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 0x5083d6
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004f5e06
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55eec0]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.004f1ae7
pop ecx
jmp 0x507f55
push 2
push ebx
push ebx
push dword [esi]
call fcn.00502520
add esp, 0x10
or eax, edx
je 0x50836e
push ebx
push ebx
push ebx
push dword [esi]
call fcn.00502520
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x50804f
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.004fd265
add esp, 0xc
cmp eax, 0xffffffff
je 0x50804f
cmp eax, 2
je 0x508312
cmp eax, 3
jne 0x508360
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x508312
mov byte [ebp - 2], 1
jmp 0x50816c
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x50816c
cmp eax, 2
jbe 0x50836e
cmp eax, 4
ja 0x508163
push 2
push ebx
push ebx
push dword [esi]
call fcn.00502520
add esp, 0x10
or eax, edx
je 0x50836e
push ebx
push ebx
push ebx
push dword [esi]
call fcn.00502520
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x50816c
jmp 0x50804f
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x50833a
push dword [esi]
call fcn.004fbe7b
pop ecx
call fcn.004f5de0
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x5083ef
cmp eax, 0xfeff
jne 0x508360
push ebx
push 2
push dword [esi]
call fcn.004fc29c
add esp, 0xc
cmp eax, 0xffffffff
je 0x50804f
mov byte [ebp - 2], 2
jmp 0x50816c
push ebx
push ebx
push dword [esi]
call fcn.004fc29c
add esp, 0xc
jmp 0x508304
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x50838e
dec eax
jne 0x50816c
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x50839c
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.00502444
add esp, 0xc
cmp eax, 0xffffffff
je 0x5083c2
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x50839c
jmp 0x50816c
push dword [esi]
call fcn.004fbe7b
pop ecx
call fcn.004f5de0
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x5083ef
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55eec0]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret