Mac:
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pip install frida-tools # CLI tools pip install frida # Python bindings npm install frida # Node.js bindings |
iOS:
cydia: https://build.frida.re
作者：大蝉
Caddy无法启动报错：caddy.service: Main process exited, code=exited, status=1/FAILURE 解决方案
修改服务文件，取消以下注释：
;CapabilityBoundingSet=CAP_NET_BIND_SERVICE
;AmbientCapabilities=CAP_NET_BIND_SERVICE
;NoNewPrivileges=true
转：Caddy部署
转：编译可在苹果iOS设备上运行的Go语言程序
开启unicorn对NEON(STP SIMD)的支持
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CPACR_FPEN_MASK = (0x3 << 20) CPACR_FPEN_TRAP_NONE = (0x3 << 20) cpacr = mu.reg_read(UC_ARM64_REG_CPACR_EL1) cpacr = (cpacr & ~CPACR_FPEN_MASK) | CPACR_FPEN_TRAP_NONE mu.reg_write(UC_ARM64_REG_CPACR_EL1, cpacr) |
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var CPACR_FPEN_MASK uint64 = (0x3 << 20) var CPACR_FPEN_TRAP_NONE uint64= (0x3 << 20) cpacr, err := mu.RegRead(uc.ARM64_REG_CPACR_EL1) if err!=nil{ panic(err.Error()) } cpacr = (cpacr & ^CPACR_FPEN_MASK) | CPACR_FPEN_TRAP_NONE mu.RegWrite(uc.ARM64_REG_CPACR_EL1, cpacr) |
IDA切换ARM和THUMB指令
ARM AND THUMB MODE SWITCH INSTRUCTIONS
This processor has two instruction encodings: ARM and THUMB.
IDA allows to specify the encoding mode for every single instruction.
For this IDA uses a virtual register T. If its value is zero, then
the ARM mode is used, otherwise the THUMB mode is used.
You can change the value of the register T using
the ‘change segment register value’ command
(the canonical hotkey is Alt-G)
ollvm特征
我简单给你说ollvm的特征
ollvm的bcf的话
可以去找两个同级的sub
然后
算了不说了
两个同级的bb，不搞编译器的叫loc吧。不叫sub
有一个是循环自己
还有一个是往下走的
伪代码是一大串if true xxxx嵌套
这就是bcf，循环自己的那个就是假的控制流
ollvm的fla很明显。直接看控制流图就行了
splitbb就是一个函数里有一大段很短的loc
之间都是无条件跳转
substitution就是一堆看起来应该被简化的逻辑/数学运算连在一起
每家都说是自己写的
刘欣也说是自己写的我抄他的
谁知道的
不过有几个应该是有点干货
不知道哪家就是了
不说了
光在设计上就是为了解决问题
*解决这些问题
再加额外功能和现有的优化
谁知道他们
实际上汇编层不是if true
是一个恒量表达式
lldb报错”ImportError: cannot import name _remove_dead_weakref”的解决办法
export PATH=/usr/bin:$PATH 切回系统自带python
ida+debugserver真机调试ios app
1.xcode随便新建一个工程，在真机上跑一遍。这样/Developer/usr/bin 下就会有debugserver。
2.sftp把debugserver拉回本地，在同目录下新建plist文件entitlements.plist，内容如下：
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<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/ PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>com.apple.springboard.debugapplications</key> <true/> <key>run-unsigned-code</key> <true/> <key>get-task-allow</key> <true/> <key>task_for_pid-allow</key> <true/> </dict> </plist> |
3.然后给debugserver重签名
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codesign -s - --entitlements entitlements.plist -f debugserver |
4.传回真机/usr/bin/debugserver.
5.brew install usbmuxd，把iphone端口映射到本地 iproxy 1234 1234
6.在ida的debug设置里debugger -> debgger options ->set specific options去掉Launch debugserver automatically
7.启动/usr/bin/debugserver *:1234
8.ida里开始调试，输入ip和端口号1234
ios砸壳
1.sftp往手机里传以下文件：
cycript(解压)
dumpdecrypted.dylib（下回来源码直接make编译）
2.ps -e找到目标进程x
3.cycript -p x
4.[[NSFileManager defaultManager] URLsForDirectory:NSDocumentDirectory
inDomains:NSUserDomainMask][0]
获取目标app的附件目录，然后把dumpdecrypted.dylib 传到这个附件目录，然后ctrl+D退出cyc
5.su mobile切用户（重要）
6.进入附件目录，DYLD_INSERT_LIBRARIES=dumpdecrypted.dylib /var/mobile/Containers/Bundle/
Application/xxxx/xxxx(执行文件路径)
mach-o decryption dumper
DISCLAIMER: This tool is only meant for security research purposes, not for application crackers.
[+] detected 64bit ARM binary in memory.
[+] offset to cryptid found: @0x100028cf8(from 0x100028000) = cf8
[+] Found encrypted data at address 00004000 of length 59457536 bytes – type 1.
[+] Opening /private/var/containers/Bundle/Application/176519AE-E905-4E0F-A718-3C7B1B96A6E3/WeChat.app/WeChat for reading.
[+] Reading header
[+] Detecting header type
[+] Executable is a plain MACH-O image
[+] Opening WeChat.decrypted for writing.
[+] Copying the not encrypted start of the file
[+] Dumping the decrypted data into the file
[+] Copying the not encrypted remainder of the file
[+] Setting the LC_ENCRYPTION_INFO->cryptid to 0 at offset cf8
[+] Closing original file
[+] Closing dump file
导出文件名：xxxx.decrypted