Function at 0x100875af
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 0x100875de
mov dword [ebp - 0x2c], ebx
mov byte [ebp - 1], 0x10
jmp 0x100875e8
mov dword [ebp - 0x2c], 1
mov byte [ebp - 1], bl
lea eax, [ebp - 0x24]
push eax
call fcn.10088c47
test eax, eax
pop ecx
je 0x10087603
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.100769c4
add esp, 0x14
lea eax, [ebp - 0x28]
push eax
call fcn.10074fc1
test eax, eax
pop ecx
je 0x1008761e
push ebx
push ebx
push ebx
push ebx
push ebx
call fcn.100769c4
add esp, 0x14
mov ecx, dword [ebp + 0x10]
mov eax, 0x8000
test eax, ecx
jne 0x1008763b
test ecx, 0x74000
jne 0x10087637
cmp dword [ebp - 0x24], eax
je 0x1008763b
or byte [ebp - 1], 0x80
mov eax, ecx
and eax, 3
sub eax, ebx
mov edx, 0xc0000000
mov edi, SysReAllocString
je 0x10087695
dec eax
je 0x1008767f
dec eax
je 0x1008767a
call fcn.10076b42
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.10076b2f
push 0x16
pop esi
push ebx
push ebx
push ebx
push ebx
push ebx
mov dword [eax], esi
call fcn.10076ac0
add esp, 0x14
jmp 0x10087c47
mov dword [ebp - 8], edx
jmp 0x10087698
test cl, 8
je 0x1008768c
test ecx, 0x70000
jne 0x1008767a
mov dword [ebp - 8], 0x40000000
jmp 0x10087698
mov dword [ebp - 8], edi
mov eax, dword [ebp + 0x14]
push 0x10
pop ecx
sub eax, ecx
je 0x100876d9
sub eax, ecx
je 0x100876d0
sub eax, ecx
je 0x100876c7
sub eax, ecx
je 0x100876be
sub eax, 0x40
jne 0x10087654
cmp dword [ebp - 8], edi
sete al
mov dword [ebp - 0x10], eax
jmp 0x100876dc
mov dword [ebp - 0x10], 3
jmp 0x100876dc
mov dword [ebp - 0x10], 2
jmp 0x100876dc
mov dword [ebp - 0x10], 1
jmp 0x100876dc
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 0x1008772f
je 0x10087726
cmp eax, ebx
je 0x10087726
cmp eax, edi
je 0x1008771d
cmp eax, 0x200
je 0x100877a2
cmp eax, 0x300
jne 0x10087654
mov dword [ebp - 0x14], 2
jmp 0x1008774c
mov dword [ebp - 0x14], 4
jmp 0x1008774c
mov dword [ebp - 0x14], 3
jmp 0x1008774c
cmp eax, 0x500
je 0x10087745
cmp eax, 0x600
je 0x100877a2
cmp eax, edx
jne 0x10087654
mov dword [ebp - 0x14], 1
mov eax, dword [ebp + 0x10]
test edi, eax
mov dword [ebp - 0xc], 0x80
je 0x10087770
mov ecx, dword [0x100cdcf4]
not ecx
and ecx, dword [ebp + 0x18]
test cl, cl
js 0x10087770
mov dword [ebp - 0xc], 1
test al, 0x40
je 0x1008778c
or dword [ebp - 0xc], 0x4000000
or dword [ebp - 8], 0x10000
cmp dword [ebp - 0x28], 2
jne 0x1008778c
or dword [ebp - 0x10], 4
test ax, 0x1000
je 0x10087795
or dword [ebp - 0xc], edi
test al, 0x20
je 0x100877ab
or dword [ebp - 0xc], 0x8000000
jmp 0x100877b6
mov dword [ebp - 0x14], 5
jmp 0x1008774c
test al, 0x10
je 0x100877b6
or dword [ebp - 0xc], 0x10000000
call fcn.10086d52
cmp eax, 0xffffffff
mov dword [esi], eax
jne 0x100877dc
call fcn.10076b42
mov dword [eax], ebx
or dword [esi], 0xffffffff
call fcn.10076b2f
mov dword [eax], 0x18
jmp 0x1008786a
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 0x10087876
mov ecx, dword [ebp - 8]
mov eax, 0xc0000000
and ecx, eax
cmp ecx, eax
jne 0x10087842
test byte [ebp + 0x10], 1
je 0x10087842
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 0x10087876
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x100cfc20]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.10076b55
pop ecx
call fcn.10076b2f
mov eax, dword [eax]
jmp 0x10087d03
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_GetFileType]
cmp eax, ebx
jne 0x100878c7
mov esi, dword [esi]
mov eax, esi
and esi, 0x1f
imul esi, esi, 0x38
sar eax, 5
mov eax, dword [eax*4 + 0x100cfc20]
lea eax, [eax + esi + 4]
and byte [eax], 0xfe
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
push esi
call fcn.10076b55
pop ecx
push dword [ebp - 0x1c]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
cmp esi, ebx
jne 0x1008786a
call fcn.10076b2f
mov dword [eax], 0xd
jmp 0x1008786a
cmp eax, 2
jne 0x100878d2
or byte [ebp - 1], 0x40
jmp 0x100878db
cmp eax, 3
jne 0x100878db
or byte [ebp - 1], 8
push dword [ebp - 0x1c]
push dword [esi]
call fcn.10086b21
mov eax, dword [esi]
mov edx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar edx, 5
mov edx, dword [edx*4 + 0x100cfc20]
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 + 0x100cfc20]
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 0x100879b0
test cl, 0x80
je 0x10087a80
test byte [ebp + 0x10], 2
je 0x100879b0
push 2
or edi, 0xffffffff
push edi
push dword [esi]
call fcn.100849f9
add esp, 0xc
cmp eax, edi
mov dword [ebp - 0x18], eax
jne 0x1008796f
call fcn.10076b42
cmp dword [eax], 0x83
je 0x100879b0
push dword [esi]
call fcn.100851fa
jmp 0x10087869
push 1
lea eax, [ebp - 4]
push eax
push dword [esi]
mov byte [ebp - 4], bl
call fcn.10086ef1
add esp, 0xc
test eax, eax
jne 0x100879a0
cmp byte [ebp - 4], 0x1a
jne 0x100879a0
mov eax, dword [ebp - 0x18]
cdq
push edx
push eax
push dword [esi]
call fcn.100889d7
add esp, 0xc
cmp eax, edi
je 0x10087963
push ebx
push ebx
push dword [esi]
call fcn.100849f9
add esp, 0xc
cmp eax, edi
je 0x10087963
test byte [ebp - 1], 0x80
je 0x10087a80
mov ecx, 0x74000
test dword [ebp + 0x10], ecx
mov edi, 0x4000
jne 0x100879d8
mov eax, dword [ebp - 0x24]
and eax, ecx
jne 0x100879d5
or dword [ebp + 0x10], edi
jmp 0x100879d8
or dword [ebp + 0x10], eax
mov eax, dword [ebp + 0x10]
and eax, ecx
cmp eax, edi
je 0x10087a25
cmp eax, 0x10000
je 0x10087a11
cmp eax, 0x14000
je 0x10087a11
cmp eax, 0x20000
je 0x10087a1f
cmp eax, 0x24000
je 0x10087a1f
cmp eax, 0x40000
je 0x10087a0b
cmp eax, 0x44000
jne 0x10087a28
mov byte [ebp - 2], 1
jmp 0x10087a28
mov ecx, dword [ebp + 0x10]
mov eax, 0x301
and ecx, eax
cmp ecx, eax
jne 0x10087a28
mov byte [ebp - 2], 2
jmp 0x10087a28
mov byte [ebp - 2], bl
test dword [ebp + 0x10], 0x70000
je 0x10087a80
test byte [ebp - 1], 0x40
mov dword [ebp - 0x18], ebx
jne 0x10087a80
mov eax, dword [ebp - 8]
mov ecx, 0xc0000000
and eax, ecx
cmp eax, 0x40000000
je 0x10087bda
cmp eax, 0x80000000
je 0x10087ba1
cmp eax, ecx
jne 0x10087a80
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x10087a80
cmp eax, 2
jbe 0x10087c82
cmp eax, 4
jbe 0x10087b73
cmp eax, 5
je 0x10087c82
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x100cfc20]
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 + 0x100cfc20]
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 0x10087af2
test byte [ebp + 0x10], 8
je 0x10087af2
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x100cfc20]
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 0x10087d01
test byte [ebp + 0x10], 1
je 0x10087d01
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 0x10087cea
call dword [sym.imp.KERNEL32.dll_GetLastError]
push eax
call fcn.10076b55
mov eax, dword [esi]
mov ecx, eax
and eax, 0x1f
imul eax, eax, 0x38
sar ecx, 5
mov ecx, dword [ecx*4 + 0x100cfc20]
lea eax, [ecx + eax + 4]
and byte [eax], 0xfe
push dword [esi]
call fcn.10086b9e
pop ecx
jmp 0x10087869
push 2
push ebx
push ebx
push dword [esi]
call fcn.10085abb
add esp, 0x10
or eax, edx
je 0x10087c82
push ebx
push ebx
push ebx
push dword [esi]
call fcn.10085abb
and eax, edx
add esp, 0x10
cmp eax, 0xffffffff
je 0x10087963
push 3
lea eax, [ebp - 0x18]
push eax
push dword [esi]
call fcn.10086ef1
add esp, 0xc
cmp eax, 0xffffffff
je 0x10087963
cmp eax, 2
je 0x10087c26
cmp eax, 3
jne 0x10087c74
cmp dword [ebp - 0x18], 0xbfbbef
jne 0x10087c26
mov byte [ebp - 2], 1
jmp 0x10087a80
mov eax, dword [ebp - 0x14]
cmp eax, ebx
jbe 0x10087a80
cmp eax, 2
jbe 0x10087c82
cmp eax, 4
ja 0x10087a77
push 2
push ebx
push ebx
push dword [esi]
call fcn.10085abb
add esp, 0x10
or eax, edx
je 0x10087c82
push ebx
push ebx
push ebx
push dword [esi]
call fcn.10085abb
add esp, 0x10
and eax, edx
cmp eax, 0xffffffff
jne 0x10087a80
jmp 0x10087963
mov eax, dword [ebp - 0x18]
and eax, 0xffff
cmp eax, 0xfffe
jne 0x10087c4e
push dword [esi]
call fcn.100851fa
pop ecx
call fcn.10076b2f
push 0x16
pop esi
mov dword [eax], esi
mov eax, esi
jmp 0x10087d03
cmp eax, 0xfeff
jne 0x10087c74
push ebx
push 2
push dword [esi]
call fcn.100849f9
add esp, 0xc
cmp eax, 0xffffffff
je 0x10087963
mov byte [ebp - 2], 2
jmp 0x10087a80
push ebx
push ebx
push dword [esi]
call fcn.100849f9
add esp, 0xc
jmp 0x10087c18
movsx eax, byte [ebp - 2]
xor edi, edi
dec eax
je 0x10087ca2
dec eax
jne 0x10087a80
mov dword [ebp - 0x18], 0xfeff
mov dword [ebp - 0x14], 2
jmp 0x10087cb0
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.100847b9
add esp, 0xc
cmp eax, 0xffffffff
je 0x10087cd6
add edi, eax
cmp dword [ebp - 0x14], edi
jg 0x10087cb0
jmp 0x10087a80
push dword [esi]
call fcn.100851fa
pop ecx
call fcn.10076b2f
mov eax, dword [eax]
mov dword [ebp - 0x20], eax
jmp 0x10087d03
mov esi, dword [esi]
mov ecx, esi
sar ecx, 5
mov ecx, dword [ecx*4 + 0x100cfc20]
and esi, 0x1f
imul esi, esi, 0x38
mov dword [esi + ecx], eax
mov eax, ebx
pop edi
pop esi
pop ebx
leave
ret