Function at 0x507c27
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 0x507c56
mov dword [ebp - 0x30], ebx
mov byte [ebp - 1], 0x10
jmp 0x507c60
mov dword [ebp - 0x30], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.004f6391
test eax, eax
pop ecx
je 0x507c7b
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004ede2e
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.004f3c50
test eax, eax
pop ecx
je 0x507c96
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.004ede2e
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x507cb3
test ecx, 0x74000
jne 0x507caf
cmp dword [ebp - 0x24], eax
je 0x507cb3
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, SysReAllocString
je 0x507d0d
dec eax
je 0x507cf7
dec eax
je 0x507cf2
call fcn.004f5273
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004f5260
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.004edf2a
add esp, 0x14
jmp 0x5082c0
mov dword [ebp - 8], edx
jmp 0x507d10
test cl, 8
je 0x507d04
test ecx, 0x70000
jne 0x507cf2
mov dword [ebp - 8], 0x40000000
jmp 0x507d10
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x507d51
sub eax, ecx
je 0x507d48
sub eax, ecx
je 0x507d3f
sub eax, ecx
je 0x507d36
sub eax, 0x40
jne 0x507ccc
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x507d54
mov dword [ebp - 0x10], 3
jmp 0x507d54
mov dword [ebp - 0x10], 2
jmp 0x507d54
mov dword [ebp - 0x10], 1
jmp 0x507d54
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 0x507da7
je 0x507d9e
cmp eax, ebx
je 0x507d9e
cmp eax, edi
je 0x507d95
cmp eax, 0x200
je 0x507e1a
cmp eax, 0x300
jne 0x507ccc
mov dword [ebp - 0x14], 2
jmp 0x507dc4
mov dword [ebp - 0x14], 4
jmp 0x507dc4
mov dword [ebp - 0x14], 3
jmp 0x507dc4
cmp eax, 0x500
je 0x507dbd
cmp eax, 0x600
je 0x507e1a
cmp eax, edx
jne 0x507ccc
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x507de8
mov ecx, dword [0x55bb34]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x507de8
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x507e04
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x507e04
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x507e0d
or dword [ebp - 0xc], edi
test al, 0x20
je 0x507e23
or dword [ebp - 0xc], 0x8000000
jmp 0x507e2e
mov dword [ebp - 0x14], 5
jmp 0x507dc4
test al, 0x10
je 0x507e2e
or dword [ebp - 0xc], 0x10000000
call fcn.004f111b
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x507e54
call fcn.004f5273
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.004f5260
mov dword [eax], 0x18
jmp 0x507ee2
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 0x507eee
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x507eba
test byte [ebp + 0x10], 1
je 0x507eba
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 0x507eee
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x55ce80]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004f5286
pop ecx
call fcn.004f5260
mov eax, dword [eax]
jmp 0x50837c
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x507f3f
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x55ce80]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.004f5286
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x507ee2
call fcn.004f5260
mov dword [eax], 0xd
jmp 0x507ee2
cmp eax, 2
jne 0x507f4a
or byte [ebp - 1], 0x40
jmp 0x507f53
cmp eax, 3
jne 0x507f53
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.004f0eea
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x55ce80]
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 + 0x55ce80]
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 0x508029
test cl, 0x80
je 0x5080f9
test byte [ebp + 0x10], 2
je 0x508029
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.004fb71c
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x507fe7
call fcn.004f5273
cmp dword [eax], 0x83
je 0x508029
push dword [esi]
call fcn.004fb2fb
jmp 0x507ee1
push 1
lea eax, [ebp - 0x2c]
push eax
push dword [esi]
mov dword [ebp - 0x2c], ebx
call fcn.004fc6e5
add esp, 0xc
test eax, eax
jne 0x508019
cmp word [ebp - 0x2c], 0x1a
jne 0x508019
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.004f09cb
add esp, 0xc
cmp eax, edi
je 0x507fdb
push ebx
push ebx
push dword [esi]
call fcn.004fb71c
add esp, 0xc
cmp eax, edi
je 0x507fdb
test byte [ebp - 1], 0x80
je 0x5080f9
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x508051
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x50804e
or dword [ebp + 0x10], edi
jmp 0x508051
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x50809e
cmp eax, 0x10000
je 0x50808a
cmp eax, 0x14000
je 0x50808a
cmp eax, 0x20000
je 0x508098
cmp eax, 0x24000
je 0x508098
cmp eax, 0x40000
je 0x508084
cmp eax, 0x44000
jne 0x5080a1
mov byte [ebp - 2], 1
jmp 0x5080a1
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x5080a1
mov byte [ebp - 2], 2
jmp 0x5080a1
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x5080f9
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x5080f9
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x508253
cmp eax, 0x80000000
je 0x50821a
cmp eax, ecx
jne 0x5080f9
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x5080f9
cmp eax, 2
jbe 0x5082fb
cmp eax, 4
jbe 0x5081ec
cmp eax, 5
je 0x5082fb
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55ce80]
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 + 0x55ce80]
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 0x50816b
test byte [ebp + 0x10], 8
je 0x50816b
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55ce80]
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 0x50837a
test byte [ebp + 0x10], 1
je 0x50837a
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 0x508363
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.004f5286
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55ce80]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.004f0f67
pop ecx
jmp 0x507ee1
push 2
push ebx
push ebx
push dword [esi]
call fcn.00501a81
add esp, 0x10
or eax, edx
je 0x5082fb
push ebx
push ebx
push ebx
push dword [esi]
call fcn.00501a81
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x507fdb
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.004fc6e5
add esp, 0xc
cmp eax, 0xffffffff
je 0x507fdb
cmp eax, 2
je 0x50829f
cmp eax, 3
jne 0x5082ed
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x50829f
mov byte [ebp - 2], 1
jmp 0x5080f9
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x5080f9
cmp eax, 2
jbe 0x5082fb
cmp eax, 4
ja 0x5080f0
push 2
push ebx
push ebx
push dword [esi]
call fcn.00501a81
add esp, 0x10
or eax, edx
je 0x5082fb
push ebx
push ebx
push ebx
push dword [esi]
call fcn.00501a81
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x5080f9
jmp 0x507fdb
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x5082c7
push dword [esi]
call fcn.004fb2fb
pop ecx
call fcn.004f5260
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x50837c
cmp eax, 0xfeff
jne 0x5082ed
push ebx
push 2
push dword [esi]
call fcn.004fb71c
add esp, 0xc
cmp eax, 0xffffffff
je 0x507fdb
mov byte [ebp - 2], 2
jmp 0x5080f9
push ebx
push ebx
push dword [esi]
call fcn.004fb71c
add esp, 0xc
jmp 0x508291
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x50831b
dec eax
jne 0x5080f9
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x508329
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.005018c4
add esp, 0xc
cmp eax, 0xffffffff
je 0x50834f
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x508329
jmp 0x5080f9
push dword [esi]
call fcn.004fb2fb
pop ecx
call fcn.004f5260
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x50837c
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x55ce80]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret