add source code

.gitignore

@@ -0,0 +1,110 @@
+app2dylib
+
+
+# svn
+*.svn*
+
+# mac
+__MACOSX
+*.DS_Store*
+*._*
+*.lock
+*.Spotlight-V100
+*.Trashes
+*ehthumbs.db
+*Thumbs.db
+
+# Python 
+*.pyc
+__pycache__/
+
+
+# Vim
+*.swp
+*.swo
+*.swn
+
+# Xcode
+*~.nib
+build/
+*.pbxuser
+!default.pbxuser
+*.mode1v3
+!default.mode1v3
+*.mode2v3
+!default.mode2v3
+*.perspectivev3
+!default.perspectivev3
+xcuserdata
+*.xccheckout
+*.xcscmblueprint
+*.moved-aside
+DerivedData
+*.hmap
+*.ipa
+*.xcuserstate
+
+# generated files
+bin/
+gen/
+
+# built application files
+*.apk
+*.ap_
+
+# files for the dex VM
+*.dex
+
+# Java class files
+*.class
+
+# Local configuration file (sdk path, etc)
+local.properties
+
+# Eclipse project files
+.classpath
+.project
+.settings/
+
+# Proguard folder generated by Eclipse
+proguard/
+
+# Intellij project files
+*.iml
+*.ipr
+*.iws
+.idea/
+
+#Pod
+Pods/
+!podfile
+!podfile.lock
+
+# Gradle files
+.gradle
+build/
+
+# Ignore Gradle GUI config
+gradle-app.setting
+
+# Avoid ignoring Gradle wrapper jar file (.jar files are usually ignored)
+!gradle-wrapper.jar
+
+#Android studio For eclipse
+#build.gradle
+#gradle/
+#gradlew
+#gradlew.bat
+#.gradle/
+#
+
+
+
+#tweak
+_/
+.theos/
+obj/
+*.deb
+
+
+

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "class-dump"]
+	path = class-dump
+	url = https://github.com/0xced/class-dump

README.md

@@ -1,2 +1,74 @@
 # app2dylib
 A reverse engineering tool to convert iOS app to dylib 
+
+
+# Usage
+
+```
+
+git clone --recursive https://github.com/tobefuturer/app2dylib.git
+cd app2dylib && make
+./app2dylib
+
+```
+
+example :
+
+```
+
+./app2dylib /tmp/AlipayWallet -o /tmp/libAlipayApp.dylib
+
+```
+
+You can use libAlipayApp.dylib as a normal dynamic library.
+
+Call OC method or call C function like this:
+
+```
+
+#import <UIKit/UIKit.h>
+#import <dlfcn.h>
+
+#import <mach/mach.h>
+#import <mach-o/loader.h>
+#import <mach-o/dyld.h>
+
+int main(int argc, char * argv[]) {
+    NSString * dylibName = @"libAlipayApp";
+    NSString * path = [[NSBundle mainBundle] pathForResource:dylibName ofType:@"dylib"];
+    if (dlopen(path.UTF8String, RTLD_NOW) == NULL){
+        NSLog(@"dlopen failed ，error %s", dlerror());
+        return 0;
+    };
+    
+    uint32_t dylib_count = _dyld_image_count();
+    uint64_t slide = 0;
+    for (int i = 0; i < dylib_count; i ++) {
+        const char * name = _dyld_get_image_name(i);
+        if ([[NSString stringWithUTF8String:name] isEqualToString:path]) {
+            slide = _dyld_get_image_vmaddr_slide(i);
+        }
+    }
+    assert(slide != 0);
+    
+    
+    Class c = NSClassFromString(@"aluSecurity");
+    NSString * plain = @"alipay";
+    NSString * pubkey = @"MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDZ6i9VNEGEaZaYE7XffA9XRj15cp/ZKhHYY43EEva8LIhCWi29EREaF4JjZVMwFpUAfrL+9gpA7NMQmaMRHbrz1KHe2Ho4HpUhEac8M9zUbNvaDKSlhx0lq/15TQP+57oQbfJ9oKKd+he4Yd6jpBI3UtGmwJyN/T1S0DQ0aXR8OQIDAQAB";
+    NSString * cipher = [c performSelector:NSSelectorFromString(@"rsaEncryptText:pubKey:") withObject:plain withObject:pubkey];
+    NSLog(@"ciphertext： %@", cipher);
+    
+    typedef int (*BASE64_ENCODE_FUNC_TYPE) (char * output, int * output_size , char * input, int input_length);
+    
+    /** get function pointer*/
+    BASE64_ENCODE_FUNC_TYPE base64_encode = (BASE64_ENCODE_FUNC_TYPE)(slide + 0xa798e4);
+    char output[1000] = {0};
+    int length = 1000;
+    char * input = "alipay";
+    base64_encode(output, & length,  input, (int)strlen(input));
+    NSLog(@"base64 length: %d , %s", length,  output);
+    
+}
+
+
+```