Use exec() to evaluate the Python code instead of eval() for Pyth…

…on 2.

* Under Python2 `eval()` does not support `print` statements, but
  `exec()` does.

lib/ronin/payloads/encoders/builtin/python/base64_encode.rb

@@ -28,10 +28,10 @@ module Encoders
       module Python
         #
         # A Python encoder that encodes the given Python code as a Base64
-        # string, then decodes it using `base64.b64decode()`, and then evaluates
-        # the decoded Python code using `eval()`.
+        # string, then decodes it using `base64.b64decode()`, and then execuates
+        # the decoded Python code using `exec()`.
         #
-        #    print('PWNED') -> import base64; eval(base64.b64decode("cHJpbnQoJ1BXTkVEJyk="))
+        #    print('PWNED') -> import base64; exec(base64.b64decode("cHJpbnQoJ1BXTkVEJyk="))
         #
         # @since 0.3.0
         #
@@ -43,10 +43,10 @@ class Base64Encode < PythonEncoder
 
           description <<~DESC
             Encodes the given Python code as a Base64 string, then decodes it
-            using `base64.b64decode()`, and then evaluates the decoded Python
-            code using `eval()`.
+            using `base64.b64decode()`, and then execuates the decoded Python
+            code using `exec()`.
 
-              print('PWNED') -> import base64; eval(base64.b64decode("cHJpbnQoJ1BXTkVEJyk="))
+              print('PWNED') -> import base64; exec(base64.b64decode("cHJpbnQoJ1BXTkVEJyk="))
 
           DESC
 
@@ -61,7 +61,7 @@ class Base64Encode < PythonEncoder
           def encode(python)
             base64 = Support::Encoding::Base64.encode(python, mode: :strict)
 
-            %{import base64; eval(base64.b64decode("#{base64}"))}
+            %{import base64; exec(base64.b64decode("#{base64}"))}
           end
 
         end

lib/ronin/payloads/encoders/builtin/python/hex_encode.rb

@@ -28,10 +28,10 @@ module Encoders
       module Python
         #
         # A Python encoder that encodes the given Python code as an hex string,
-        # then decodes it using `binascii.unhexlify()`, and then evaluates the
-        # decoded Python code using `eval()`.
+        # then decodes it using `binascii.unhexlify()`, and then execuates the
+        # decoded Python code using `exec()`.
         #
-        #     print('PWNED') -> import binascii; eval(binascii.unhexlify("7072696e74282750574e45442729"))
+        #     print('PWNED') -> import binascii; exec(binascii.unhexlify("7072696e74282750574e45442729"))
         #
         # @since 0.3.0
         #
@@ -43,10 +43,10 @@ class HexEncode < PythonEncoder
 
           description <<~DESC
             Encodes the given Python code as an hex string, then decodes it
-            using `binascii.unhexlify()`, and then evaluates the decoded Python
-            code using `eval()`.
+            using `binascii.unhexlify()`, and then execuates the decoded Python
+            code using `exec()`.
 
-              print('PWNED') -> import binascii; eval(binascii.unhexlify("7072696e74282750574e45442729"))
+              print('PWNED') -> import binascii; exec(binascii.unhexlify("7072696e74282750574e45442729"))
 
           DESC
 
@@ -61,7 +61,7 @@ class HexEncode < PythonEncoder
           def encode(python)
             hex = Support::Encoding::Hex.encode(python)
 
-            %{import binascii; eval(binascii.unhexlify("#{hex}"))}
+            %{import binascii; exec(binascii.unhexlify("#{hex}"))}
           end
 
         end

spec/encoders/builtin/python/base64_encode_spec.rb

@@ -16,9 +16,9 @@
 
   describe "#encode" do
     let(:python)  { "print('PWNED')" }
-    let(:encoded) { %{import base64; eval(base64.b64decode("cHJpbnQoJ1BXTkVEJyk="))} }
+    let(:encoded) { %{import base64; exec(base64.b64decode("cHJpbnQoJ1BXTkVEJyk="))} }
 
-    it "must encode the given Python code as a Base64 string and embed it into the 'import base64; eval(base64.b64decode(\"...\"))' string" do
+    it "must encode the given Python code as a Base64 string and embed it into the 'import base64; exec(base64.b64decode(\"...\"))' string" do
       expect(subject.encode(python)).to eq(encoded)
     end
   end

spec/encoders/builtin/python/hex_encode_spec.rb

@@ -16,9 +16,9 @@
 
   describe "#encode" do
     let(:python)  { "print('PWNED')" }
-    let(:encoded) { %{import binascii; eval(binascii.unhexlify("7072696e74282750574e45442729"))} }
+    let(:encoded) { %{import binascii; exec(binascii.unhexlify("7072696e74282750574e45442729"))} }
 
-    it "must encode the given Python code as a hex string and embed it into the 'import binascii; eval(binascii.unhexlify(\"...\"))' string" do
+    it "must encode the given Python code as a hex string and embed it into the 'import binascii; exec(binascii.unhexlify(\"...\"))' string" do
       expect(subject.encode(python)).to eq(encoded)
     end
   end