Substrate-SoHook步驟彙總

0x00 jni目錄

構建一個新jni目錄，包含以下文件:

hook.cpp
SubstrateHook.h
nativelog.h
Android.mk
libsubstrate.a

0x01 編寫hook.cpp

#include <netinet/in.h>
#include <sys/types.h>
#include <arpa/inet.h>
#include <dlfcn.h>
#include <unistd.h>
#include <jni.h>
#include <stdio.h>
#include <dirent.h>
#include "nativelog.h"
#include "SubstrateHook.h"

unsigned long get_module_base( pid_t pid, const char*  module_name)
{
	FILE *fp;
	unsigned long addr = 0;
	char *pch;
	char filename[32];
	char line[1024];

	if ( pid < 0 )
	{
		/* self process */
		snprintf( filename, sizeof(filename), "/proc/self/maps", pid );
	}
	else
	{
		snprintf( filename, sizeof(filename), "/proc/%d/maps", pid );
	}

	fp = fopen( filename, "r" );

	if ( fp != NULL )
	{
		while ( fgets( line, sizeof(line), fp ) )
		{
			if ( strstr( line, module_name ) )
			{