Add unit tests

spec/lib/ruby_smb/dcerpc/samr/encrypted_nt_owf_password.rb

@@ -0,0 +1,10 @@
+RSpec.describe RubySMB::Dcerpc::Samr::EncryptedNtOwfPassword do
+  it 'Creates output key' do
+    expect(described_class.to_output_key('ABCDEFG')).to eq ["40a09068442A188E"].pack('H*')
+    expect(described_class.to_output_key('AAAAAAA')).to eq ["40A05028140A0482"].pack('H*')
+  end
+
+  it 'Encrypts a hash' do
+    expect(described_class.encrypt_hash(hash: 'AAAAAAAAAAAAAAAA', key: 'BBBBBBBBBBBBBB')).to eq ["8cd90c3de08ecda2f27ee6c7206e6eeb8cd90c3de08ecda2f27ee6c7206e6eeb"].pack('H*')
+  end
+end

spec/lib/ruby_smb/dcerpc/samr/sampr_encrypted_user_password_spec.rb

@@ -0,0 +1,9 @@
+RSpec.describe RubySMB::Dcerpc::Samr::SamprEncryptedUserPassword do
+
+  it 'Encrypts correctly' do
+    password = 'newPassword1!'
+    old_password_nt = 'AAAAAAAAAAAAAAAA'
+    expected = ['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'].pack('H*')
+    expect(described_class.encrypt_password(password, old_password_nt)).to eq expected
+  end
+end

spec/lib/ruby_smb/dcerpc/samr/samr_change_password_user_request_spec.rb

@@ -0,0 +1,28 @@
+RSpec.describe RubySMB::Dcerpc::Samr::SamrChangePasswordUserRequest do
+  subject(:packet) { described_class.new }
+
+  describe '#initialize_instance' do
+    it 'sets #opnum to SAMR_CHANGE_PASSWORD_USER constant' do
+      expect(packet.opnum).to eq(RubySMB::Dcerpc::Samr::SAMR_CHANGE_PASSWORD_USER)
+    end
+  end
+
+  it 'reads itself' do
+    uuid = RubySMB::Dcerpc::Uuid.new
+    uuid.set(SecureRandom.uuid)
+    new_packet = described_class.new({
+      user_handle: RubySMB::Dcerpc::Samr::SamprHandle.new(context_handle_attributes: 42, :context_handle_uuid => uuid),
+      lm_present: 1,
+      old_lm_encrypted_with_new_lm: RubySMB::Dcerpc::Samr::PencryptedNtOwfPassword.new(buffer: SecureRandom::bytes(16)),
+      new_lm_encrypted_with_old_lm: RubySMB::Dcerpc::Samr::PencryptedNtOwfPassword.new(buffer: SecureRandom::bytes(16)),
+      nt_present: 1,
+      old_nt_encrypted_with_new_nt: RubySMB::Dcerpc::Samr::PencryptedNtOwfPassword.new(buffer: SecureRandom::bytes(16)),
+      new_nt_encrypted_with_old_nt: RubySMB::Dcerpc::Samr::PencryptedNtOwfPassword.new(buffer: SecureRandom::bytes(16)),
+      nt_cross_encryption_present: 1,
+      new_nt_encrypted_with_new_nt: RubySMB::Dcerpc::Samr::PencryptedNtOwfPassword.new(buffer: SecureRandom::bytes(16)),
+      lm_cross_encryption_present: 1,
+      new_lm_encrypted_with_new_nt: RubySMB::Dcerpc::Samr::PencryptedNtOwfPassword.new(buffer: SecureRandom::bytes(16))
+    })
+    expect(packet.read(new_packet.to_binary_s)).to eq(new_packet)
+  end
+end

spec/lib/ruby_smb/dcerpc/samr/samr_change_password_user_response_spec.rb

@@ -0,0 +1,16 @@
+RSpec.describe RubySMB::Dcerpc::Samr::SamrChangePasswordUserResponse do
+  subject(:packet) { described_class.new }
+
+  describe '#initialize_instance' do
+    it 'sets #opnum to SAMR_CHANGE_PASSWORD_USER constant' do
+      expect(packet.opnum).to eq(RubySMB::Dcerpc::Samr::SAMR_CHANGE_PASSWORD_USER)
+    end
+  end
+
+  it 'reads itself' do
+    new_packet = described_class.new({
+      error_status: 4
+    })
+    expect(packet.read(new_packet.to_binary_s)).to eq(new_packet)
+  end
+end

spec/lib/ruby_smb/dcerpc/samr/samr_unicode_change_password_user2_request_spec.rb

@@ -0,0 +1,22 @@
+RSpec.describe RubySMB::Dcerpc::Samr::SamrUnicodeChangePasswordUser2Request do
+  subject(:packet) { described_class.new }
+
+  describe '#initialize_instance' do
+    it 'sets #opnum to SAMR_UNICODE_CHANGE_PASSWORD_USER2 constant' do
+      expect(packet.opnum).to eq(RubySMB::Dcerpc::Samr::SAMR_UNICODE_CHANGE_PASSWORD_USER2)
+    end
+  end
+
+  it 'reads itself' do
+    new_packet = described_class.new({
+      server_name: 'my-server',
+      user_name: 'user.person',
+      new_password_encrypted_with_old_nt: RubySMB::Dcerpc::Samr::PsamprEncryptedUserPassword.new(buffer: SecureRandom::bytes(516)),
+      pencrypted_nt_owf_password: RubySMB::Dcerpc::Samr::PencryptedNtOwfPassword.new(buffer: SecureRandom::bytes(16)),
+      lm_present: 1,
+      new_password_encrypted_with_old_lm: RubySMB::Dcerpc::Samr::PsamprEncryptedUserPassword.new(buffer: SecureRandom::bytes(516)),
+      old_lm_owf_password_encrypted_with_new_nt: RubySMB::Dcerpc::Samr::PencryptedNtOwfPassword.new(buffer: SecureRandom::bytes(16)),
+    })
+    expect(packet.read(new_packet.to_binary_s)).to eq(new_packet)
+  end
+end

spec/lib/ruby_smb/dcerpc/samr/samr_unicode_change_password_user2_response_spec.rb

@@ -0,0 +1,16 @@
+RSpec.describe RubySMB::Dcerpc::Samr::SamrUnicodeChangePasswordUser2Response do
+  subject(:packet) { described_class.new }
+
+  describe '#initialize_instance' do
+    it 'sets #opnum to SAMR_UNICODE_CHANGE_PASSWORD_USER2 constant' do
+      expect(packet.opnum).to eq(RubySMB::Dcerpc::Samr::SAMR_UNICODE_CHANGE_PASSWORD_USER2)
+    end
+  end
+
+  it 'reads itself' do
+    new_packet = described_class.new({
+      error_status: 4
+    })
+    expect(packet.read(new_packet.to_binary_s)).to eq(new_packet)
+  end
+end