Function at 0x6157c6
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 0x6157f5
mov dword [ebp - 0x2c], ebx
mov byte [ebp - 1], 0x10
jmp 0x6157ff
mov dword [ebp - 0x2c], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.006187ca
test eax, eax
pop ecx
je 0x61581a
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.0060b1ef
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.00608e06
test eax, eax
pop ecx
je 0x615835
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.0060b1ef
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x615852
test ecx, 0x74000
jne 0x61584e
cmp dword [ebp - 0x24], eax
je 0x615852
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, SysReAllocString
je 0x6158ac
dec eax
je 0x615896
dec eax
je 0x615891
call fcn.0060b013
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.0060b000
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.0060b30d
add esp, 0x14
jmp 0x615e5e
mov dword [ebp - 8], edx
jmp 0x6158af
test cl, 8
je 0x6158a3
test ecx, 0x70000
jne 0x615891
mov dword [ebp - 8], 0x40000000
jmp 0x6158af
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x6158f0
sub eax, ecx
je 0x6158e7
sub eax, ecx
je 0x6158de
sub eax, ecx
je 0x6158d5
sub eax, 0x40
jne 0x61586b
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x6158f3
mov dword [ebp - 0x10], 3
jmp 0x6158f3
mov dword [ebp - 0x10], 2
jmp 0x6158f3
mov dword [ebp - 0x10], 1
jmp 0x6158f3
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 0x615946
je 0x61593d
cmp eax, ebx
je 0x61593d
cmp eax, edi
je 0x615934
cmp eax, 0x200
je 0x6159b9
cmp eax, 0x300
jne 0x61586b
mov dword [ebp - 0x14], 2
jmp 0x615963
mov dword [ebp - 0x14], 4
jmp 0x615963
mov dword [ebp - 0x14], 3
jmp 0x615963
cmp eax, 0x500
je 0x61595c
cmp eax, 0x600
je 0x6159b9
cmp eax, edx
jne 0x61586b
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x615987
mov ecx, dword [0x6eb5f0]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x615987
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x6159a3
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x6159a3
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x6159ac
or dword [ebp - 0xc], edi
test al, 0x20
je 0x6159c2
or dword [ebp - 0xc], 0x8000000
jmp 0x6159cd
mov dword [ebp - 0x14], 5
jmp 0x615963
test al, 0x10
je 0x6159cd
or dword [ebp - 0xc], 0x10000000
call fcn.006118e4
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x6159f3
call fcn.0060b013
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.0060b000
mov dword [eax], 0x18
jmp 0x615a81
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 0x615a8d
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x615a59
test byte [ebp + 0x10], 1
je 0x615a59
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 0x615a8d
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x6fdfe0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.0060b026
pop ecx
call fcn.0060b000
mov eax, dword [eax]
jmp 0x615f1a
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x615ade
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x6fdfe0]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.0060b026
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x615a81
call fcn.0060b000
mov dword [eax], 0xd
jmp 0x615a81
cmp eax, 2
jne 0x615ae9
or byte [ebp - 1], 0x40
jmp 0x615af2
cmp eax, 3
jne 0x615af2
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.006116b3
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x6fdfe0]
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 + 0x6fdfe0]
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 0x615bc7
test cl, 0x80
je 0x615c97
test byte [ebp + 0x10], 2
je 0x615bc7
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.0060ac70
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x615b86
call fcn.0060b013
cmp dword [eax], 0x83
je 0x615bc7
push dword [esi]
call fcn.006185ad
jmp 0x615a80
push 1
lea eax, [ebp - 4]
push eax
push dword [esi]
mov byte [ebp - 4], bl
call fcn.0060c1e8
add esp, 0xc
test eax, eax
jne 0x615bb7
cmp byte [ebp - 4], 0x1a
jne 0x615bb7
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.006183f9
add esp, 0xc
cmp eax, edi
je 0x615b7a
push ebx
push ebx
push dword [esi]
call fcn.0060ac70
add esp, 0xc
cmp eax, edi
je 0x615b7a
test byte [ebp - 1], 0x80
je 0x615c97
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x615bef
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x615bec
or dword [ebp + 0x10], edi
jmp 0x615bef
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x615c3c
cmp eax, 0x10000
je 0x615c28
cmp eax, 0x14000
je 0x615c28
cmp eax, 0x20000
je 0x615c36
cmp eax, 0x24000
je 0x615c36
cmp eax, 0x40000
je 0x615c22
cmp eax, 0x44000
jne 0x615c3f
mov byte [ebp - 2], 1
jmp 0x615c3f
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x615c3f
mov byte [ebp - 2], 2
jmp 0x615c3f
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x615c97
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x615c97
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x615df1
cmp eax, 0x80000000
je 0x615db8
cmp eax, ecx
jne 0x615c97
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x615c97
cmp eax, 2
jbe 0x615e99
cmp eax, 4
jbe 0x615d8a
cmp eax, 5
je 0x615e99
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x6fdfe0]
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 + 0x6fdfe0]
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 0x615d09
test byte [ebp + 0x10], 8
je 0x615d09
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x6fdfe0]
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 0x615f18
test byte [ebp + 0x10], 1
je 0x615f18
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 0x615f01
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.0060b026
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x6fdfe0]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.00611730
pop ecx
jmp 0x615a80
push 2
push ebx
push ebx
push dword [esi]
call fcn.00611fb9
add esp, 0x10
or eax, edx
je 0x615e99
push ebx
push ebx
push ebx
push dword [esi]
call fcn.00611fb9
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x615b7a
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.0060c1e8
add esp, 0xc
cmp eax, 0xffffffff
je 0x615b7a
cmp eax, 2
je 0x615e3d
cmp eax, 3
jne 0x615e8b
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x615e3d
mov byte [ebp - 2], 1
jmp 0x615c97
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x615c97
cmp eax, 2
jbe 0x615e99
cmp eax, 4
ja 0x615c8e
push 2
push ebx
push ebx
push dword [esi]
call fcn.00611fb9
add esp, 0x10
or eax, edx
je 0x615e99
push ebx
push ebx
push ebx
push dword [esi]
call fcn.00611fb9
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x615c97
jmp 0x615b7a
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x615e65
push dword [esi]
call fcn.006185ad
pop ecx
call fcn.0060b000
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x615f1a
cmp eax, 0xfeff
jne 0x615e8b
push ebx
push 2
push dword [esi]
call fcn.0060ac70
add esp, 0xc
cmp eax, 0xffffffff
je 0x615b7a
mov byte [ebp - 2], 2
jmp 0x615c97
push ebx
push ebx
push dword [esi]
call fcn.0060ac70
add esp, 0xc
jmp 0x615e2f
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x615eb9
dec eax
jne 0x615c97
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x615ec7
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.0060d0d0
add esp, 0xc
cmp eax, 0xffffffff
je 0x615eed
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x615ec7
jmp 0x615c97
push dword [esi]
call fcn.006185ad
pop ecx
call fcn.0060b000
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x615f1a
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x6fdfe0]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret