iOS代码混淆-基础篇

1.脚本如下

脚本文件为sh类型,创建好之后导入工程目录下。 

#!/usr/bin/env bash

TABLENAME=symbols
SYMBOL_DB_FILE="symbols"
STRING_SYMBOL_FILE="func.list.plist"
HEAD_FILE="$PROJECT_DIR/$PROJECT_NAME/codeObfuscation.h"
export LC_CTYPE=C

#维护数据库方便日后作排重
createTable()
{
echo "create table $TABLENAME(src text, des text);" | sqlite3 $SYMBOL_DB_FILE
}

insertValue()
{
echo "insert into $TABLENAME values('$1' ,'$2');" | sqlite3 $SYMBOL_DB_FILE
}

query()
{
echo "select * from $TABLENAME where src='$1';" | sqlite3 $SYMBOL_DB_FILE
}

ramdomString()
{
openssl rand -base64 64 | tr -cd 'a-zA-Z' |head -c 16
}

rm -f $SYMBOL_DB_FILE
rm -f $HEAD_FILE
createTable

touch $HEAD_FILE
echo '#ifndef Demo_codeObfuscation_h
#define Demo_codeObfuscation_h' >> $HEAD_FILE
echo "//confuse string at `date`" >> $HEAD_FILE
cat "$STRING_SYMBOL_FILE" | while read -ra line; do
if [[ ! -z "$line" ]]; then
ramdom=`ramdomString`
echo $line $ramdom
insertValue $line $ramdom
echo "#define $line $ramdom" >> $HEAD_FILE
fi
done
echo "#endif" >> $HEAD_FILE


sqlite3 $SYMBOL_DB_FILE .dump

2.创建pch文件导入脚本内HEAD_FILE所定义的.h文件名 

#ifndef Prefix_pch
#define Prefix_pch
#import "codeObfuscation.h"
// Include any system framework and library headers here that should be included in all compilation units.
// You will also need to set the Prefix Header build setting of one or more of your targets to reference this file.

#endif /* Prefix_pch */

3.创建pist写入方法名关键字 

4.配置Build Phase，在工程Build Phase中添加执行脚本路径进行操作，执行confuse.sh脚本，如图： 

4.方法名中关键字写入上述所说的plist中

5.编译查看结果，直接build，混淆脚本会在编译前运行，进行字符随机替换，并且每次build的随机字符不同，如图：