Xcode如果不破解，无法真机调试, 也无法编译真机Release文件，只有付费开通Apple开发者账号，才能申请真机调试。而Xcode进行破解后，结合越狱的iPhone或iPad, 即可免官方证书开发调试了！
应用程序->其他->钥匙串访问
菜单：钥匙串访问->证书助理->创建证书, 然后按以下图片顺序操作即可：
Xcode 5免证书开发调试_打开创建证书菜单
Xcode 5免证书开发调试_输入证书名称iPhone Developer并选择覆盖默认值
Xcode
5免证书开发调试_确定继续
Xcode
5免证书开发调试_输入序列号有效期，有效期不要超过365天
Xcode
5免证书开发调试_输入电子邮件地址
Xcode
5免证书开发调试_输入密钥对信息
Xcode
5免证书开发调试_密钥使用扩展扩展选择：签名
Xcode
5免证书开发调试_已扩展的密钥使用扩展选择：代码签名
Xcode
5免证书开发调试_基本约束扩展不选择
Xcode
5免证书开发调试_主题备用名称扩展输入RFC822名称，填入邮箱名即可
Xcode 5免证书开发调试_用于该证书的位置选择钥匙串类型为登录
保证Xcode处于关闭状态，命令行终端，复制粘贴下面的代码：
cd /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/Xcode/PrivatePlugIns/iPhoneOS\ Build\ System\ Support.xcplugin/Contents/MacOS/ sudo dd if=iPhoneOS\ Build\ System\ Support of=~/working bs=500 count=255 sudo chown mac<span style="font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace; font-size: 13px; line-height: 26px; background-color: rgb(248, 248, 248);">(你登陆系统的用户名,我的用户名是mac)</span>:staff ~/working printf "\x8f\x2a\x00\x00" >> ~/working dd if=iPhoneOS\ Build\ System\ Support of=~/working bs=1 skip=127504 seek=127504 sudo /bin/mv -n iPhoneOS\ Build\ System\ Support iPhoneOS\ Build\ System\ Support.original sudo /bin/mv ~/working iPhoneOS\ Build\ System\ Support sudo chmod a+x iPhoneOS\ Build\ System\ Support sudo chown root:wheel iPhoneOS\ Build\ System\ Support
Xcode5免证书真机调试-修改SDKSettings.plist
修改保存后再将文件移回原处:
sudo mv ~/SDKSettings.plist /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.1.sdk/ sudo chown root:wheel /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.1.sdk/SDKSettings.plist
sudo mv /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Info.plist ~/ #文件移动到用户目录 sudo chown mac(你登陆系统的用户名,我的用户名是mac):staff ~/Info.plist
PROVISIONING_PROFILE_ALLOWED = NO PROVISIONING_PROFILE_REQUIRED = NO
Xcode5免证书真机调试-修改Info.plist
然后将该文件中所有的"XCiPhoneOSCodeSignContext"替换为"XCCodeSignContext"，即去掉中间的"iPhoneOS"
。如果不进行此步，编译Device Release版本时會报错：
Code Sign error: a valid provisioning profile matching the application's Identifier 'com.yourcompany.xxxx' could not be found
Xcode5免证书真机调试-修改Info.plist替换标识
sudo mv ~/Info.plist /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/ #文件移回原处 sudo chown root:wheel /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Info.plist
A. 点击项目图标，找到"BuildSettings"选项下的"Code Sign Identity"，将其值全部改为"Don‘t Code Sign"
Xcode5免证书真机调试-选择target
Xcode5免证书真机调试-修改Code Signing Identity
B. 切换到Build Phases选项，点击菜单Editor->Add Build Phase->Add Run Script Build Phase，然后单击Add Run Script，然后在Run Script中输入以下脚本：
export
CODESIGN_ALLOCATE=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/codesign_allocate
if [ "${PLATFORM_NAME}" =="iphoneos" ] || [ "${PLATFORM_NAME}" == "ipados"]; then
/Applications/Xcode.app/Contents/Developer/iphoneentitlements/gen_entitlements.py "my.company.${PROJECT_NAME}" "${BUILT_PRODUCTS_DIR}/${WRAPPER_NAME}/${PROJECT_NAME}.xcent";
codesign -f -s "iPhone Developer" --entitlements "${BUILT_PRODUCTS_DIR}/${WRAPPER_NAME}/${PROJECT_NAME}.xcent" "${BUILT_PRODUCTS_DIR}/${WRAPPER_NAME}/"
fi
Xcode5免证书真机调试-Add
Run Script Build Phase
Xcode5免证书真机调试-写入脚本
Xcode破解完成，或者更准确的讲，是配置完成！
将 iPhone接入电脑，在Xcode的Window->Organizer中会检测到你的iPhone.点击 restore using developer
查看iPhone和你的Xcode识别正常后退出Organizer，选择编译环境为"iPhone Device-我有一个姑娘我很爱她",点击"Build and Go"
期间会出现让我们选择签名证书，点选"允许"后，等待你的iPad/iPhone屏幕点亮就ok了。
你的程序会自动下载到你的iPhone中，可以进行真机调试了
如果是在原Xcode的版本上升级到5，并且之前已经破解过，那么只需要再做如下步骤即可：
在/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Info.plist中新增如下两项(告知项目编译无需证书)：
PROVISIONING_PROFILE_ALLOWED = NO PROVISIONING_PROFILE_REQUIRED = NO
Code Sign error: a valid provisioning profile matching the application's Identifier 'com.yourcompany.xxxx' could not be found
Xcode5.1.1+ios 7.1.2 免证书真机调试,布布扣,bubuko.com
原文地址：http://blog.csdn.net/anjon520/article/details/38270899
