modifyELF

修改Android lib***.so(ELF)文件的函数名和hash

文件说明

modify.c 修改so文件(ELF文件)方法对应的hash

readsymbol.c   取并打印so文件内的symbol

libtest/modify     modify.c编译后的文件(编译环境OS X，需要在其他环境执行的可以用源码重新编译)

libtest/readsymbol readsymbol.c编译后的文件(编译环境OS X，需要在其他环境执行的可以用源码重新编译)

libtest/libxlog.so  用于测试的so文件

使用方式

先使用readsymbol打印so文件内所有的函数名：

readsymbol libxlog.so

打印结果：

Java_com_tendk01_mm_xlog_LogLogicJni_initLogInfo

Java_com_tendk01_mm_xlog_LogLogicJni_setIsAlphaVersion

Java_com_tendk01_mm_xlog_LogLogicJni_getLogLevelFromCfg

Java_com_tendk01_mm_xlog_LogLogicJni_getIPxxLogLevel

Java_com_tendk01_mm_xlog_LogLogicJni_getAppenderModeFromCfg

Java_com_tendk01_mm_xlog_LogLogicJni_setIPxxLogML

Java_com_tendk01_mm_xlog_LogLogicJni_setConsoleLogOpen

Java_com_tendk01_mm_xlog_LogLogicJni_setErrLogOpen

Java_com_tendk01_mm_xlog_Xlog_onCreate

Java_com_tendk01_mm_xlog_Xlog_appenderOpen

Java_com_tendk01_mm_xlog_Xlog_appenderClose

Java_com_tendk01_mm_xlog_Xlog_appenderFlush

Java_com_tendk01_mm_xlog_Xlog_logWrite

Java_com_tendk01_mm_xlog_Xlog_logWrite2

Java_com_tendk01_mm_xlog_Xlog_getLogLevel

Java_com_tendk01_mm_xlog_Xlog_setLogLevel

Java_com_tendk01_mm_xlog_Xlog_setAppenderMode

然后使用modify修改函数名的hash

./modify libxlog.so Java_com_tencent_mm_xlog_LogLogicJni_initLogInfo Java_com_tendk01_mm_xlog_LogLogicJni_initLogInfo

./modify libxlog.so Java_com_tencent_mm_xlog_LogLogicJni_setIsAlphaVersion Java_com_tendk01_mm_xlog_LogLogicJni_setIsAlphaVersion

./modify libxlog.so Java_com_tencent_mm_xlog_LogLogicJni_getLogLevelFromCfg Java_com_tendk01_mm_xlog_LogLogicJni_getLogLevelFromCfg

./modify libxlog.so Java_com_tencent_mm_xlog_LogLogicJni_getIPxxLogLevel Java_com_tendk01_mm_xlog_LogLogicJni_getIPxxLogLevel

./modify libxlog.so Java_com_tencent_mm_xlog_LogLogicJni_getAppenderModeFromCfg Java_com_tendk01_mm_xlog_LogLogicJni_getAppenderModeFromCfg

./modify libxlog.so Java_com_tencent_mm_xlog_LogLogicJni_setIPxxLogML Java_com_tendk01_mm_xlog_LogLogicJni_setIPxxLogML

./modify libxlog.so Java_com_tencent_mm_xlog_LogLogicJni_setConsoleLogOpen Java_com_tendk01_mm_xlog_LogLogicJni_setConsoleLogOpen

./modify libxlog.so Java_com_tencent_mm_xlog_LogLogicJni_setErrLogOpen Java_com_tendk01_mm_xlog_LogLogicJni_setErrLogOpen

./modify libxlog.so Java_com_tencent_mm_xlog_Xlog_onCreate Java_com_tendk01_mm_xlog_Xlog_onCreate

./modify libxlog.so Java_com_tencent_mm_xlog_Xlog_appenderOpen Java_com_tendk01_mm_xlog_Xlog_appenderOpen

./modify libxlog.so Java_com_tencent_mm_xlog_Xlog_appenderClose Java_com_tendk01_mm_xlog_Xlog_appenderClose

./modify libxlog.so Java_com_tencent_mm_xlog_Xlog_appenderFlush Java_com_tendk01_mm_xlog_Xlog_appenderFlush

./modify libxlog.so Java_com_tencent_mm_xlog_Xlog_logWrite Java_com_tendk01_mm_xlog_Xlog_logWrite

./modify libxlog.so Java_com_tencent_mm_xlog_Xlog_logWrite2 Java_com_tendk01_mm_xlog_Xlog_logWrite2

./modify libxlog.so Java_com_tencent_mm_xlog_Xlog_getLogLevel Java_com_tendk01_mm_xlog_Xlog_getLogLevel

./modify libxlog.so Java_com_tencent_mm_xlog_Xlog_setLogLevel Java_com_tendk01_mm_xlog_Xlog_setLogLevel

./modify libxlog.so Java_com_tencent_mm_xlog_Xlog_setAppenderMode Java_com_tendk01_mm_xlog_Xlog_setAppenderMode

完成。