Function at 0x507b2b
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 0x507b5a
mov dword [ebp - 0x2c], ebx
mov byte [ebp - 1], 0x10
jmp 0x507b64
mov dword [ebp - 0x2c], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.004f6d21
test eax, eax
pop ecx
je 0x507b7f
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004ee7ae
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.004f45dc
test eax, eax
pop ecx
je 0x507b9a
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004ee7ae
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x507bb7
test ecx, 0x74000
jne 0x507bb3
cmp dword [ebp - 0x24], eax
je 0x507bb7
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, SysReAllocString
je 0x507c11
dec eax
je 0x507bfb
dec eax
je 0x507bf6
call fcn.004f5c03
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004f5bf0
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.004ee8aa
add esp, 0x14
jmp 0x5081c3
mov dword [ebp - 8], edx
jmp 0x507c14
test cl, 8
je 0x507c08
test ecx, 0x70000
jne 0x507bf6
mov dword [ebp - 8], 0x40000000
jmp 0x507c14
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x507c55
sub eax, ecx
je 0x507c4c
sub eax, ecx
je 0x507c43
sub eax, ecx
je 0x507c3a
sub eax, 0x40
jne 0x507bd0
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x507c58
mov dword [ebp - 0x10], 3
jmp 0x507c58
mov dword [ebp - 0x10], 2
jmp 0x507c58
mov dword [ebp - 0x10], 1
jmp 0x507c58
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 0x507cab
je 0x507ca2
cmp eax, ebx
je 0x507ca2
cmp eax, edi
je 0x507c99
cmp eax, 0x200
je 0x507d1e
cmp eax, 0x300
jne 0x507bd0
mov dword [ebp - 0x14], 2
jmp 0x507cc8
mov dword [ebp - 0x14], 4
jmp 0x507cc8
mov dword [ebp - 0x14], 3
jmp 0x507cc8
cmp eax, 0x500
je 0x507cc1
cmp eax, 0x600
je 0x507d1e
cmp eax, edx
jne 0x507bd0
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x507cec
mov ecx, dword [0x55db74]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x507cec
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x507d08
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x507d08
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x507d11
or dword [ebp - 0xc], edi
test al, 0x20
je 0x507d27
or dword [ebp - 0xc], 0x8000000
jmp 0x507d32
mov dword [ebp - 0x14], 5
jmp 0x507cc8
test al, 0x10
je 0x507d32
or dword [ebp - 0xc], 0x10000000
call fcn.004f1afb
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x507d58
call fcn.004f5c03
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004f5bf0
mov dword [eax], 0x18
jmp 0x507de6
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 0x507df2
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x507dbe
test byte [ebp + 0x10], 1
je 0x507dbe
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 0x507df2
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.004f5c16
pop ecx
call fcn.004f5bf0
mov eax, dword [eax]
jmp 0x50827f
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x507e43
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.004f5c16
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x507de6
call fcn.004f5bf0
mov dword [eax], 0xd
jmp 0x507de6
cmp eax, 2
jne 0x507e4e
or byte [ebp - 1], 0x40
jmp 0x507e57
cmp eax, 3
jne 0x507e57
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.004f18ca
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 0x507f2c
test cl, 0x80
je 0x507ffc
test byte [ebp + 0x10], 2
je 0x507f2c
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.004fc0ac
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x507eeb
call fcn.004f5c03
cmp dword [eax], 0x83
je 0x507f2c
push dword [esi]
call fcn.004fbc8b
jmp 0x507de5
push 1
lea eax, [ebp - 4]
push eax
push dword [esi]
mov byte [ebp - 4], bl
call fcn.004fd075
add esp, 0xc
test eax, eax
jne 0x507f1c
cmp byte [ebp - 4], 0x1a
jne 0x507f1c
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.004f11a4
add esp, 0xc
cmp eax, edi
je 0x507edf
push ebx
push ebx
push dword [esi]
call fcn.004fc0ac
add esp, 0xc
cmp eax, edi
je 0x507edf
test byte [ebp - 1], 0x80
je 0x507ffc
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x507f54
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x507f51
or dword [ebp + 0x10], edi
jmp 0x507f54
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x507fa1
cmp eax, 0x10000
je 0x507f8d
cmp eax, 0x14000
je 0x507f8d
cmp eax, 0x20000
je 0x507f9b
cmp eax, 0x24000
je 0x507f9b
cmp eax, 0x40000
je 0x507f87
cmp eax, 0x44000
jne 0x507fa4
mov byte [ebp - 2], 1
jmp 0x507fa4
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x507fa4
mov byte [ebp - 2], 2
jmp 0x507fa4
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x507ffc
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x507ffc
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x508156
cmp eax, 0x80000000
je 0x50811d
cmp eax, ecx
jne 0x507ffc
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x507ffc
cmp eax, 2
jbe 0x5081fe
cmp eax, 4
jbe 0x5080ef
cmp eax, 5
je 0x5081fe
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 0x50806e
test byte [ebp + 0x10], 8
je 0x50806e
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 0x50827d
test byte [ebp + 0x10], 1
je 0x50827d
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 0x508266
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004f5c16
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.004f1947
pop ecx
jmp 0x507de5
push 2
push ebx
push ebx
push dword [esi]
call fcn.0050239e
add esp, 0x10
or eax, edx
je 0x5081fe
push ebx
push ebx
push ebx
push dword [esi]
call fcn.0050239e
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x507edf
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.004fd075
add esp, 0xc
cmp eax, 0xffffffff
je 0x507edf
cmp eax, 2
je 0x5081a2
cmp eax, 3
jne 0x5081f0
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x5081a2
mov byte [ebp - 2], 1
jmp 0x507ffc
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x507ffc
cmp eax, 2
jbe 0x5081fe
cmp eax, 4
ja 0x507ff3
push 2
push ebx
push ebx
push dword [esi]
call fcn.0050239e
add esp, 0x10
or eax, edx
je 0x5081fe
push ebx
push ebx
push ebx
push dword [esi]
call fcn.0050239e
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x507ffc
jmp 0x507edf
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x5081ca
push dword [esi]
call fcn.004fbc8b
pop ecx
call fcn.004f5bf0
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x50827f
cmp eax, 0xfeff
jne 0x5081f0
push ebx
push 2
push dword [esi]
call fcn.004fc0ac
add esp, 0xc
cmp eax, 0xffffffff
je 0x507edf
mov byte [ebp - 2], 2
jmp 0x507ffc
push ebx
push ebx
push dword [esi]
call fcn.004fc0ac
add esp, 0xc
jmp 0x508194
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x50821e
dec eax
jne 0x507ffc
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x50822c
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.005022c2
add esp, 0xc
cmp eax, 0xffffffff
je 0x508252
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x50822c
jmp 0x507ffc
push dword [esi]
call fcn.004fbc8b
pop ecx
call fcn.004f5bf0
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x50827f
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