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process64_inject.cpp
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#include <stdio.h>
#include <stdlib.h>
#include <dirent.h>
#include <unistd.h>
#include <string.h>
#include <iostream>
#include <dlfcn.h>
#include <signal.h>
#include <memory>
#include <asm/ptrace.h>
#include <sys/ptrace.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <map>
#include "process64_inject.h"
#include "ptrace_arm64_utils.h"
#include "maps_helper.h"
#include "kernel_root_helper.h"
#include "so_symbol_parser.h"
int safe_load_libc64_run_cmd_func_addr(
const char* so_path,
size_t& p_mmap_offset,
size_t& p_munmap_offset,
size_t& p_chdir_offset,
size_t& p_clearenv_offset,
size_t& p_setenv_offset,
size_t& p_execve_offset,
size_t& p_fileno_offset,
size_t& p_popen_offset,
size_t& p_pclose_offset,
size_t& p_read_offset) {
void* p_so_addr = get_module_base(-1, so_path);
if (p_so_addr) {
TRACE("myself have this so.\n");
//自身有这个so
void* p_so = dlopen(so_path, RTLD_NOW | RTLD_GLOBAL);
if (p_so) {
void* p_mmap = dlsym(p_so, "mmap");
void* p_munmap = dlsym(p_so, "munmap");
void* p_chdir = dlsym(p_so, "chdir");
void* p_clearenv = dlsym(p_so, "clearenv");
void* p_setenv = dlsym(p_so, "setenv");
void* p_execve = dlsym(p_so, "execve");
void* p_fileno = dlsym(p_so, "fileno");
void* p_popen = dlsym(p_so, "popen");
void* p_pclose = dlsym(p_so, "pclose");
void* p_read = dlsym(p_so, "read");
dlclose(p_so);
p_chdir_offset = p_chdir ? ((size_t)p_chdir - (size_t)p_so_addr) : 0;
p_clearenv_offset = p_clearenv ? ((size_t)p_clearenv - (size_t)p_so_addr) : 0;
p_setenv_offset = p_setenv ? ((size_t)p_setenv - (size_t)p_so_addr) : 0;
if (p_mmap && p_munmap && p_execve && p_fileno && p_popen && p_pclose && p_read) {
p_mmap_offset = ((size_t)p_mmap - (size_t)p_so_addr);
p_munmap_offset = ((size_t)p_munmap - (size_t)p_so_addr);
p_execve_offset = ((size_t)p_execve - (size_t)p_so_addr);
p_fileno_offset = ((size_t)p_fileno - (size_t)p_so_addr);
p_popen_offset = ((size_t)p_popen - (size_t)p_so_addr);
p_pclose_offset = ((size_t)p_pclose - (size_t)p_so_addr);
p_read_offset = ((size_t)p_read - (size_t)p_so_addr);
return 0;
}
}
}
//自身没这个so
std::map<std::string, uint64_t> funcSymbolMap;
funcSymbolMap["mmap"] = 0;
funcSymbolMap["munmap"] = 0;
funcSymbolMap["chdir"] = 0;
funcSymbolMap["clearenv"] = 0;
funcSymbolMap["setenv"] = 0;
funcSymbolMap["execve"] = 0;
funcSymbolMap["fileno"] = 0;
funcSymbolMap["popen"] = 0;
funcSymbolMap["pclose"] = 0;
funcSymbolMap["read"] = 0;
int ret = get_so_symbol_addr(so_path, funcSymbolMap);
p_mmap_offset = funcSymbolMap["mmap"];
p_munmap_offset = funcSymbolMap["munmap"];
p_chdir_offset = funcSymbolMap["chdir"];
p_clearenv_offset = funcSymbolMap["clearenv"];
p_setenv_offset = funcSymbolMap["setenv"];
p_execve_offset = funcSymbolMap["execve"];
p_fileno_offset = funcSymbolMap["fileno"];
p_popen_offset = funcSymbolMap["popen"];
p_pclose_offset = funcSymbolMap["pclose"];
p_read_offset = funcSymbolMap["read"];
return ret;
}
int safe_load_libc64_so_inject_func_addr(
const char* so_path,
size_t& p_dlopen_offset,
size_t& p_dlsym_offset,
size_t& p_mmap_offset,
size_t& p_munmap_offset) {
void* p_so_addr = get_module_base(-1, so_path);
if (p_so_addr) {
//自身有这个so
void* p_so = dlopen(so_path, RTLD_NOW | RTLD_GLOBAL);
if (p_so) {
void* p_dlopen = dlsym(p_so, "dlopen");
void* p_dlsym = dlsym(p_so, "dlsym");
void* p_mmap = dlsym(p_so, "mmap");
void* p_munmap = dlsym(p_so, "munmap");
dlclose(p_so);
if (p_dlopen && p_dlsym && p_mmap && p_munmap) {
p_dlopen_offset = ((size_t)p_dlopen - (size_t)p_so_addr);
p_dlsym_offset = ((size_t)p_dlsym - (size_t)p_so_addr);
p_mmap_offset = ((size_t)p_mmap - (size_t)p_so_addr);
p_munmap_offset = ((size_t)p_munmap - (size_t)p_so_addr);
return 0;
}
}
}
std::map<std::string, uint64_t> funcSymbolMap;
funcSymbolMap["dlopen"] = 0;
funcSymbolMap["dlsym"] = 0;
funcSymbolMap["mmap"] = 0;
funcSymbolMap["munmap"] = 0;
int ret = get_so_symbol_addr(so_path, funcSymbolMap);
p_dlopen_offset = funcSymbolMap["dlopen"];
p_dlsym_offset = funcSymbolMap["dlsym"];
p_mmap_offset = funcSymbolMap["mmap"];
p_munmap_offset = funcSymbolMap["munmap"];
return ret;
}
int safe_load_libc64_modify_env_func_addr(
const char* str_root_key,
const char* so_path,
size_t& p_mmap_offset,
size_t& p_munmap_offset,
size_t& p_getenv_offset,
size_t& p_setenv_offset) {
void* p_so_addr = get_module_base(-1, so_path);
if (p_so_addr) {
//自身有这个so
void* p_so = dlopen(so_path, RTLD_NOW | RTLD_GLOBAL);
if (p_so) {
void* p_mmap = dlsym(p_so, "mmap");
void* p_munmap = dlsym(p_so, "munmap");
void* p_getenv = dlsym(p_so, "getenv");
void* p_setenv = dlsym(p_so, "setenv");
dlclose(p_so);
if (p_mmap && p_munmap && p_getenv && p_setenv) {
p_mmap_offset = ((size_t)p_mmap - (size_t)p_so_addr);
p_munmap_offset = ((size_t)p_munmap - (size_t)p_so_addr);
p_getenv_offset = ((size_t)p_getenv - (size_t)p_so_addr);
p_setenv_offset = ((size_t)p_setenv - (size_t)p_so_addr);
return 0;
}
}
}
std::map<std::string, uint64_t> funcSymbolMap;
funcSymbolMap["getenv"] = 0;
funcSymbolMap["setenv"] = 0;
funcSymbolMap["mmap"] = 0;
funcSymbolMap["munmap"] = 0;
int ret = get_so_symbol_addr(so_path, funcSymbolMap);
p_mmap_offset = funcSymbolMap["mmap"];
p_munmap_offset = funcSymbolMap["munmap"];
p_getenv_offset = funcSymbolMap["getenv"];
p_setenv_offset = funcSymbolMap["setenv"];
return ret;
}
int safe_load_libc64_exit_func_addr(
const char* str_root_key,
const char* so_path,
size_t& p_exit_offset) {
void* p_so_addr = get_module_base(-1, so_path);
if (p_so_addr) {
//自身有这个so
void* p_so = dlopen(so_path, RTLD_NOW | RTLD_GLOBAL);
if (p_so) {
void* p_exit = dlsym(p_so, "_exit");
dlclose(p_so);
if (p_exit) {
p_exit_offset = ((size_t)p_exit - (size_t)p_so_addr);
return 0;
}
}
}
std::map<std::string, uint64_t> funcSymbolMap;
funcSymbolMap["_exit"] = 0;
int ret = get_so_symbol_addr(so_path, funcSymbolMap);
p_exit_offset = funcSymbolMap["_exit"];
return ret;
}
//远程注入
std::string inject_process64_run_cmd(
const char* str_root_key,
pid_t target_pid,
const char* libc64_so_path,
size_t& p_mmap_offset,
size_t& p_munmap_offset,
size_t& p_chdir_offset,
size_t& p_clearenv_offset,
size_t& p_setenv_offset,
size_t& p_execve_offset,
size_t& p_fileno_offset,
size_t& p_popen_offset,
size_t& p_pclose_offset,
size_t& p_read_offset,
const char* cmd,
ssize_t &out_err,
bool user_root_auth = true,
const char* chdir_path = NULL,
bool clear_env = false,
std::vector<process64_env>* set_env = NULL) {
const char * str_r = "r";
size_t remote_alloc_buf_size = 0;
size_t remote_libc64_handle = 0;
size_t mmap_addr, munmap_addr, chdir_addr, clearenv_addr, setenv_addr, execve_addr, fileno_addr, popen_addr, pclose_addr, read_addr;
uint8_t* map_base;
struct pt_regs regs, original_regs, erron_regs;
unsigned long parameters[10];
ssize_t remote_really_read = 0;
FILE * fp_cmd;
int pip_fp;
std::string cmd_exec_result;
out_err = -230;
remote_alloc_buf_size = ((strlen(cmd) + 1 + strlen(str_r) + 1) / getpagesize()) * getpagesize();
if((strlen(cmd) + 1 + strlen(str_r) + 1) % getpagesize()) {
remote_alloc_buf_size += getpagesize();
}
if(remote_alloc_buf_size == 0) {
remote_alloc_buf_size = getpagesize();
}
std::shared_ptr<char> sp_out_shell_buf(new (std::nothrow) char[remote_alloc_buf_size], std::default_delete<char[]>());
if(!sp_out_shell_buf) {
goto _ret;
}
memset(sp_out_shell_buf.get(), 0, remote_alloc_buf_size);
TRACE("[+] Injecting process: %d\n", target_pid);
//①ATTATCH，指定目标进程，开始调试
if (ptrace_attach(target_pid) == -1) {
goto _ret;
}
//②GETREGS，获取目标进程的寄存器，保存现场
if (ptrace_getregs(target_pid, ®s) == -1) {
goto _deatch;
}
/* save original registers */
memcpy(&original_regs, ®s, sizeof(regs));
//③获取目的进程的mmap函数的地址，以便为libxxx.so分配内存
/*
需要对(void*)mmap进行说明：这是取得inject本身进程的mmap函数的地址，由于mmap函数在libc.so
库中，为了将libxxx.so加载到目的进程中，就需要使用目的进程的mmap函数，所以需要查找到libc.so库在目的进程的起始地址。
*/
//获取远程pid的某个模块的起始地址
remote_libc64_handle = (size_t)get_module_base(target_pid, libc64_so_path);
if (remote_libc64_handle == 0) {
TRACE("[+] get_module_base failed.\n");
goto _deatch;
}
mmap_addr = p_mmap_offset ? remote_libc64_handle + p_mmap_offset : 0;
munmap_addr = p_munmap_offset ? remote_libc64_handle + p_munmap_offset : 0;
chdir_addr = p_chdir_offset ? remote_libc64_handle + p_chdir_offset : 0;
clearenv_addr = p_clearenv_offset ? remote_libc64_handle + p_clearenv_offset : 0;
setenv_addr = p_setenv_offset ? remote_libc64_handle + p_setenv_offset : 0;
execve_addr = p_execve_offset ? remote_libc64_handle + p_execve_offset : 0;
fileno_addr = p_fileno_offset ? remote_libc64_handle + p_fileno_offset : 0;
popen_addr = p_popen_offset ? remote_libc64_handle + p_popen_offset : 0;
pclose_addr = p_pclose_offset ? remote_libc64_handle + p_pclose_offset : 0;
read_addr = p_read_offset ? remote_libc64_handle + p_read_offset : 0;
TRACE("[+] Remote mmap address: %p\n", (void*)mmap_addr);
TRACE("[+] Remote munmap address: %p\n", (void*)munmap_addr);
TRACE("[+] Remote chdir address: %p\n", (void*)p_chdir_offset);
TRACE("[+] Remote clearenv address: %p\n", (void*)p_clearenv_offset);
TRACE("[+] Remote setenv address: %p\n", (void*)p_setenv_offset);
TRACE("[+] Remote execve address: %p\n", (void*)execve_addr);
TRACE("[+] Remote fileno address: %p\n", (void*)fileno_addr);
TRACE("[+] Remote popen address: %p\n", (void*)popen_addr);
TRACE("[+] Remote pclose address: %p\n", (void*)pclose_addr);
TRACE("[+] Remote read address: %p\n", (void*)read_addr);
/* call mmap (null, 0x4000, PROT_READ | PROT_WRITE | PROT_EXEC,
MAP_ANONYMOUS | MAP_PRIVATE, 0, 0);
匿名申请一块0x4000大小的内存
*/
parameters[0] = 0; // addr
parameters[1] = (unsigned long)remote_alloc_buf_size; // size
parameters[2] = PROT_READ | PROT_WRITE | PROT_EXEC; // prot
parameters[3] = MAP_ANONYMOUS | MAP_PRIVATE; // flags
parameters[4] = 0; //fd
parameters[5] = 0; //offset
if (ptrace_call_wrapper(target_pid, "mmap", (void*)mmap_addr, parameters, 6, ®s) == -1) {
goto _recovery;
}
//⑤从寄存器中获取mmap函数的返回值，即申请的内存首地址：
map_base = (uint8_t*)ptrace_retval(®s);
//判断是否需要提权
if (user_root_auth) {
TRACE("[+] start get root:%s\n", str_root_key);
//提权ROOT
ptrace_writedata(target_pid, map_base, (uint8_t*)str_root_key, strlen(str_root_key) + 1);
parameters[0] = (unsigned long)map_base;
parameters[1] = 0;
parameters[2] = 0;
if (ptrace_call_wrapper(target_pid, "execve", (void*)execve_addr, parameters, 3, ®s) == -1) {
goto _recovery;
}
TRACE("[+] get root finished.\n");
}
//判断是否需要改变工作目录
if (chdir_path && chdir_addr) {
//写KEY标志进mmap出来的内存
ptrace_writedata(target_pid, map_base, (uint8_t*)chdir_path, strlen(chdir_path) + 1);
parameters[0] = (unsigned long)map_base;
if (ptrace_call_wrapper(target_pid, "chdir", (void*)chdir_addr, parameters, 1, ®s) == -1) {
goto _recovery;
}
}
//判断是否需要清除环境
if (clear_env && clearenv_addr) {
if (ptrace_call_wrapper(target_pid, "clearenv", (void*)clearenv_addr, parameters, 0, ®s) == -1) {
goto _recovery;
}
}
if (set_env) {
for (process64_env env_info : *set_env) {
//写KEY标志进mmap出来的内存
ptrace_writedata(target_pid, map_base, (uint8_t*)env_info.key, strlen(env_info.key) + 1);
uint8_t* val_mem_addr = map_base + strlen(env_info.key) + 1;
//写VAL标志进mmap出来的内存
ptrace_writedata(target_pid, val_mem_addr, (uint8_t*)env_info.value, strlen(env_info.value) + 1);
parameters[0] = (unsigned long)map_base;
parameters[1] = (unsigned long)(map_base + strlen(env_info.key) + 1);
parameters[2] = 1;
//执行setenv，等于setenv("XXX", "XXXXX", 1);
if (ptrace_call_wrapper(target_pid, "setenv", (void*)setenv_addr, parameters, 3, ®s) == -1) {
goto _recovery;
}
}
}
//将要注入的cmd命令写入前面mmap出来的内存
ptrace_writedata(target_pid, map_base, (uint8_t*)cmd, strlen(cmd) + 1);
ptrace_writedata(target_pid, map_base + strlen(cmd) + 1, (uint8_t*)str_r, strlen(str_r) + 1);
parameters[0] = (unsigned long)map_base;
parameters[1] = (unsigned long)(map_base + strlen(cmd) + 1);
//执行popen(cmd, "r");
if (ptrace_call_wrapper(target_pid, "popen", (void*)popen_addr, parameters, 2, ®s) == -1) {
goto _recovery;
}
fp_cmd = (FILE *)ptrace_retval(®s);
if (!fp_cmd || fp_cmd == (FILE *)-1) {
//popen error
TRACE("[+] popen error\n");
goto _recovery;
}
TRACE("[+] popen success: %p\n", fp_cmd);
parameters[0] = (unsigned long)fp_cmd;
if (ptrace_call_wrapper(target_pid, "fileno", (void*)fileno_addr, parameters, 1, ®s) == -1) {
goto _recovery;
}
pip_fp = (int)ptrace_retval(®s);
TRACE("[+] pip_fp:%d\n", pip_fp);
// 循环读取内容
while(true) {
parameters[0] = pip_fp;
parameters[1] = (unsigned long)map_base;
parameters[2] = (unsigned long)remote_alloc_buf_size;
//执行read(pip_fp, map_base, remote_alloc_buf_size);
if (ptrace_call_wrapper(target_pid, "read", (void*)read_addr, parameters, 3, ®s) == -1) {
goto _recovery;
}
remote_really_read = (ssize_t)ptrace_retval(®s);
TRACE("[+] remote_really_read: %zd, %p\n", remote_really_read, erron_regs.regs[0]);
//获取erron
if (ptrace_getregs(target_pid, &erron_regs) == -1) {
goto _recovery;
}
if (remote_really_read == -1 && erron_regs.regs[0] == EAGAIN) {
continue; //意味着现在没有可用的数据,以后再试一次
} else if(remote_really_read > 0) {
memset(sp_out_shell_buf.get(), 0, remote_alloc_buf_size);
ptrace_readdata(target_pid, (uint8_t*)parameters[1], (uint8_t*)sp_out_shell_buf.get(), remote_really_read);
std::string str_convert(sp_out_shell_buf.get(), remote_really_read);
cmd_exec_result += str_convert;
} else {
break;
}
}
TRACE("[+] popen result: %s\n", cmd_exec_result.c_str());
parameters[0] = (unsigned long)fp_cmd;
//执行pclose(fp_cmd);
if (ptrace_call_wrapper(target_pid, "pclose", (void*)pclose_addr, parameters, 1, ®s) == -1) {
goto _recovery;
}
//解除绑定内存
parameters[0] = (unsigned long)map_base;// addr
parameters[1] = (unsigned long)(remote_alloc_buf_size); // size
if (ptrace_call_wrapper(target_pid, "munmap", (void*)munmap_addr, parameters, 2, ®s) == -1) {
goto _recovery;
}
out_err = 0;
//TRACE("Press enter to detach\n");
//getchar();
/* restore */
//⑪恢复现场并退出ptrace:
_recovery: ptrace_setregs(target_pid, &original_regs);
_deatch:ptrace_detach(target_pid);
_ret: return cmd_exec_result;
}
ssize_t inject_process_env64_PATH(
int target_pid,
const char* libc64_so_path,
size_t& p_mmap_offset,
size_t& p_munmap_offset,
size_t& p_getenv_offset,
size_t& p_setenv_offset,
const char* add_path) {
size_t input_env_buf_size = 0;
ssize_t ret = -231;
size_t remote_libc64_handle = 0;
size_t mmap_addr, munmap_addr, getenv_addr, setenv_addr;
uint8_t* map_base;
struct pt_regs regs, original_regs;
unsigned long parameters[10];
const char* str_flag_path = "PATH";
char* ret_getenv = NULL;
size_t tmp_read_byte_index = 0;
char tmp_read_byte[2] = { 0 };
std::string str_cur_path;
//将要注入的cmd命令写入前面mmap出来的内存
input_env_buf_size = (strlen(add_path) + 1 / getpagesize()) * getpagesize();
if((strlen(add_path) + 1) % getpagesize()) {
input_env_buf_size += getpagesize();
}
if(input_env_buf_size == 0) {
input_env_buf_size = getpagesize();
}
TRACE("[+] Injecting process: %d\n", target_pid);
//①ATTATCH，指定目标进程，开始调试
if (ptrace_attach(target_pid) == -1) {
goto _ret;
}
//②GETREGS，获取目标进程的寄存器，保存现场
if (ptrace_getregs(target_pid, ®s) == -1) {
goto _deatch;
}
/* save original registers */
memcpy(&original_regs, ®s, sizeof(regs));
//③获取目的进程的mmap函数的地址，以便为libxxx.so分配内存
/*
需要对(void*)mmap进行说明：这是取得inject本身进程的mmap函数的地址，由于mmap函数在libc.so
库中，为了将libxxx.so加载到目的进程中，就需要使用目的进程的mmap函数，所以需要查找到libc.so库在目的进程的起始地址。
*/
//获取远程pid的某个模块的起始地址
remote_libc64_handle = (size_t)get_module_base(target_pid, libc64_so_path);
if (remote_libc64_handle == 0) {
TRACE("[+] get_module_base failed.\n");
goto _deatch;
}
mmap_addr = p_mmap_offset ? remote_libc64_handle + p_mmap_offset : 0;
munmap_addr = p_munmap_offset ? remote_libc64_handle + p_munmap_offset : 0;
getenv_addr = p_getenv_offset ? remote_libc64_handle + p_getenv_offset : 0;
setenv_addr = p_setenv_offset ? remote_libc64_handle + p_setenv_offset : 0;
TRACE("[+] Remote mmap address: %p\n", (void*)mmap_addr);
TRACE("[+] Remote munmap address: %p\n", (void*)munmap_addr);
TRACE("[+] Remote getenv address: %p\n", (void*)getenv_addr);
TRACE("[+] Remote setenv address: %p\n", (void*)setenv_addr);
/* call mmap (null, 0x4000, PROT_READ | PROT_WRITE | PROT_EXEC,
MAP_ANONYMOUS | MAP_PRIVATE, 0, 0);
匿名申请一块0x4000大小的内存
*/
parameters[0] = 0; // addr
parameters[1] = (unsigned long)(input_env_buf_size); // size
parameters[2] = PROT_READ | PROT_WRITE | PROT_EXEC; // prot
parameters[3] = MAP_ANONYMOUS | MAP_PRIVATE; // flags
parameters[4] = 0; //fd
parameters[5] = 0; //offset
if (ptrace_call_wrapper(target_pid, "mmap", (void*)mmap_addr, parameters, 6, ®s) == -1) {
goto _recovery;
}
//⑤从寄存器中获取mmap函数的返回值，即申请的内存首地址：
map_base = (uint8_t*)ptrace_retval(®s);
//写PATH标志进mmap出来的内存
ptrace_writedata(target_pid, map_base, (uint8_t*)str_flag_path, strlen(str_flag_path) + 1);
parameters[0] = (unsigned long)map_base;
//执行getenv，等于getenv("PATH");
if (ptrace_call_wrapper(target_pid, "getenv", (void*)getenv_addr, parameters, 1, ®s) == -1) {
goto _recovery;
}
ret_getenv = (char*)ptrace_retval(®s);
if (!ret_getenv) {
//getenv error
TRACE("getenv error\n");
goto _recovery;
}
str_cur_path += add_path;
str_cur_path += ":";
do {
tmp_read_byte[0] = '\x00';
ptrace_readdata(target_pid, (uint8_t*)((size_t)ret_getenv + tmp_read_byte_index), (uint8_t*)&tmp_read_byte, 1);
tmp_read_byte_index++;
str_cur_path += tmp_read_byte;
} while (tmp_read_byte[0] != '\x00');
TRACE("[+] Remote cur path: %s\n", str_cur_path.c_str());
//写PATH变量进mmap出来的内存
ptrace_writedata(target_pid, map_base + strlen(str_flag_path) + 1, (uint8_t*)str_cur_path.c_str(), str_cur_path.length() + 1);
parameters[0] = (unsigned long)map_base;
parameters[1] = (unsigned long)(map_base + strlen(str_flag_path) + 1);
parameters[2] = 1;
//执行setenv，等于setenv("PATH", "XXXXX", 1);
if (ptrace_call_wrapper(target_pid, "setenv", (void*)setenv_addr, parameters, 3, ®s) == -1) {
goto _recovery;
}
if (ptrace_retval(®s)) {
//setenv error
TRACE("setenv error\n");
goto _recovery;
}
//解除绑定内存（不知道为什么解除内存绑定会导致对方程序crash）
parameters[0] = (unsigned long)map_base;// addr
parameters[1] = (unsigned long)(input_env_buf_size); // size
if (ptrace_call_wrapper(target_pid, "munmap", (void*)munmap_addr, parameters, 2, ®s) == -1) {
goto _recovery;
}
ret = 0;
//TRACE("Press enter to detach\n");
//getchar();
/* restore */
//⑪恢复现场并退出ptrace:
_recovery: ptrace_setregs(target_pid, &original_regs);
_deatch:ptrace_detach(target_pid);
_ret: return ret;
}
//远程注入so
ssize_t inject_process64_so(
pid_t target_pid,
const char* libc64_so_path,
size_t& p_dlopen_offset,
size_t& p_dlsym_offset,
size_t& p_mmap_offset,
size_t& p_munmap_offset,
const char* target_so_path,
const char* target_so_fun_name) {
size_t target_so_path_len = strlen(target_so_path) + 1;
size_t target_so_fun_name_len = strlen(target_so_fun_name) + 1;
size_t input_shell_buf_size = getpagesize();
ssize_t ret = -232;
size_t remote_libc64_handle = 0;
size_t dlopen_addr, dlsym_addr, mmap_addr, munmap_addr;
uint8_t* map_base;
void* target_so_handle = NULL;
void* target_func_addr = NULL;
struct pt_regs regs, original_regs;
unsigned long parameters[10];
int flags;
if (target_so_path_len > input_shell_buf_size || target_so_fun_name_len > input_shell_buf_size) { //输入太长了
goto _ret;
}
TRACE("[+] Injecting process: %d\n", target_pid);
//①ATTATCH，指定目标进程，开始调试
if (ptrace_attach(target_pid) == -1) {
goto _ret;
}
//②GETREGS，获取目标进程的寄存器，保存现场
if (ptrace_getregs(target_pid, ®s) == -1) {
goto _deatch;
}
/* save original registers */
memcpy(&original_regs, ®s, sizeof(regs));
//③获取目的进程的mmap函数的地址，以便为libxxx.so分配内存
/*
需要对(void*)mmap进行说明：这是取得inject本身进程的mmap函数的地址，由于mmap函数在libc.so
库中，为了将libxxx.so加载到目的进程中，就需要使用目的进程的mmap函数，所以需要查找到libc.so库在目的进程的起始地址。
*/
//获取远程pid的某个模块的起始地址
remote_libc64_handle = (size_t)get_module_base(target_pid, libc64_so_path);
if (remote_libc64_handle == 0) {
TRACE("[+] get_module_base failed.\n");
goto _deatch;
}
dlopen_addr = p_dlopen_offset ? remote_libc64_handle + p_dlopen_offset : 0;
dlsym_addr = p_dlsym_offset ? remote_libc64_handle + p_dlsym_offset : 0;
mmap_addr = p_mmap_offset ? remote_libc64_handle + p_mmap_offset : 0;
munmap_addr = p_munmap_offset ? remote_libc64_handle + p_munmap_offset : 0;
TRACE("[+] Remote dlopen address: %p\n", (void*)p_dlopen_offset);
TRACE("[+] Remote dlsym address: %p\n", (void*)p_dlsym_offset);
TRACE("[+] Remote mmap address: %p\n", (void*)mmap_addr);
TRACE("[+] Remote munmap address: %p\n", (void*)munmap_addr);
/* call mmap (null, 0x4000, PROT_READ | PROT_WRITE | PROT_EXEC,
MAP_ANONYMOUS | MAP_PRIVATE, 0, 0);
匿名申请一块0x4000大小的内存
*/
parameters[0] = 0; // addr
parameters[1] = (unsigned long)(input_shell_buf_size); // size
parameters[2] = PROT_READ | PROT_WRITE | PROT_EXEC; // prot
parameters[3] = MAP_ANONYMOUS | MAP_PRIVATE; // flags
parameters[4] = 0; //fd
parameters[5] = 0; //offset
if (ptrace_call_wrapper(target_pid, "mmap", (void*)mmap_addr, parameters, 6, ®s) == -1) {
goto _recovery;
}
//⑤从寄存器中获取mmap函数的返回值，即申请的内存首地址：
map_base = (uint8_t*)ptrace_retval(®s);
//将要注入的so路径写入前面mmap出来的内存
ptrace_writedata(target_pid, map_base, (uint8_t*)target_so_path, target_so_path_len);
parameters[0] = (unsigned long)map_base;
parameters[1] = (unsigned long)(RTLD_NOW | RTLD_GLOBAL);
//执行dlopen，等于 target_so_handle = dlopen("xxxxxxx.so", RTLD_NOW | RTLD_GLOBAL);
if (ptrace_call_wrapper(target_pid, "dlopen", (void*)dlopen_addr, parameters, 2, ®s) == -1) {
goto _recovery;
}
target_so_handle = (void*)ptrace_retval(®s);
if (!target_so_handle) {
//dlopen error
TRACE("dlopen error\n");
goto _recovery;
}
//将要注入的func名字写入前面mmap出来的内存
ptrace_writedata(target_pid, map_base, (uint8_t*)target_so_fun_name, target_so_fun_name_len);
parameters[0] = (unsigned long)target_so_handle;
parameters[1] = (unsigned long)map_base;
//执行target_func_addr = dlsym(target_so_handle, "xxxxxxxx");
if (ptrace_call_wrapper(target_pid, "dlsym", (void*)dlsym_addr, parameters, 2, ®s) == -1) {
goto _recovery;
}
target_func_addr = (void*)ptrace_retval(®s);
if (!target_func_addr) {
//dlsym error
TRACE("dlsym error\n");
goto _recovery;
}
if (ptrace_call_wrapper(target_pid, "hook_init", target_func_addr, parameters, 0, ®s) == -1) {
goto _recovery;
}
////解除绑定内存
//parameters[0] = (unsigned long)map_base;// addr
//parameters[1] = (unsigned long)input_shell_buf_size; // size
//if (ptrace_call_wrapper(target_pid, "munmap", (void *)munmap_addr, parameters, 2, ®s) == -1)
//{
// goto _recovery;
//}
ret = 0;
//TRACE("Press enter to detach\n");
//getchar();
/* restore */
//⑪恢复现场并退出ptrace:
_recovery: ptrace_setregs(target_pid, &original_regs);
_deatch:ptrace_detach(target_pid);
_ret: return ret;
}
//远程执行exit
ssize_t inject_process64_run_exit(
pid_t target_pid,
const char* libc64_so_path,
size_t& p_exit_offset) {
ssize_t ret = -232;
size_t remote_libc64_handle = 0;
size_t exit_addr;
struct pt_regs regs, original_regs;
unsigned long parameters[1];
TRACE("[+] Injecting process: %d\n", target_pid);
//①ATTATCH，指定目标进程，开始调试
if (ptrace_attach(target_pid) == -1) {
goto _ret;
}
//②GETREGS，获取目标进程的寄存器，保存现场
if (ptrace_getregs(target_pid, ®s) == -1) {
goto _deatch;
}
/* save original registers */
memcpy(&original_regs, ®s, sizeof(regs));
//③获取目的进程的mmap函数的地址，以便为libxxx.so分配内存
/*
需要对(void*)mmap进行说明：这是取得inject本身进程的mmap函数的地址，由于mmap函数在libc.so
库中，为了将libxxx.so加载到目的进程中，就需要使用目的进程的mmap函数，所以需要查找到libc.so库在目的进程的起始地址。
*/
//获取远程pid的某个模块的起始地址
remote_libc64_handle = (size_t)get_module_base(target_pid, libc64_so_path);
if (remote_libc64_handle == 0) {
TRACE("[+] get_module_base failed.\n");
goto _deatch;
}
exit_addr = p_exit_offset ? remote_libc64_handle + p_exit_offset : 0;
TRACE("[+] Remote exit address: %p\n", (void*)p_exit_offset);
parameters[0] = 0;
if (ptrace_call_wrapper(target_pid, "_exit", (void*)exit_addr, parameters, 1, ®s) == -1) {
goto _recovery;
}
ret = 0;
//TRACE("Press enter to detach\n");
//getchar();
/* restore */
//⑪恢复现场并退出ptrace:
_recovery: ptrace_setregs(target_pid, &original_regs);
_deatch:ptrace_detach(target_pid);
_ret: return ret;
}
std::string inject_process64_run_cmd_wrapper(
const char* str_root_key,
pid_t target_pid,
const char* cmd,
ssize_t & out_err,
bool user_root_auth/* = true*/,
const char* chdir_path /*= NULL*/,
bool clear_env/* = false*/,
std::vector<process64_env>* set_env /* = NULL*/) {
out_err = 0;
if (target_pid <= 0) {
out_err = -240;
return {};
}
if (cmd == NULL || strlen(cmd) == 0) { return {}; }
if (kernel_root::get_root(str_root_key) != 0) {
out_err = -241;
return {};
}
std::string target_process_libc_so_path = find_process_libc_so_path(target_pid);
if (target_process_libc_so_path.empty()) {
out_err = -243;
return {};
}
TRACE("target_process_libc_so_path:%s\n", target_process_libc_so_path.c_str());
size_t p_mmap_offset;
size_t p_munmap_offset;
size_t p_chdir_offset;
size_t p_clearenv_offset;
size_t p_setenv_offset;
size_t p_execve_offset;
size_t p_fileno_offset;
size_t p_popen_offset;
size_t p_pclose_offset;
size_t p_read_offset;
int r = safe_load_libc64_run_cmd_func_addr(
target_process_libc_so_path.c_str(),
p_mmap_offset,
p_munmap_offset,
p_chdir_offset,
p_clearenv_offset,
p_setenv_offset,
p_execve_offset,
p_fileno_offset,
p_popen_offset,
p_pclose_offset,
p_read_offset);
if (r != 0) {
TRACE("safe_load_libc64_run_cmd_func_addr error:%d\n", r);
out_err = r;
return {};
}
TRACE("p_mmap_offset:%zu\n", p_mmap_offset);
TRACE("p_munmap_offset:%zu\n", p_munmap_offset);
TRACE("p_chdir_offset:%zu\n", p_chdir_offset);
TRACE("p_clearenv_offset:%zu\n", p_clearenv_offset);
TRACE("p_setenv_offset:%zu\n", p_setenv_offset);
TRACE("p_execve_offset:%zu\n", p_execve_offset);
TRACE("p_fileno_offset:%zu\n", p_fileno_offset);
TRACE("p_popen_offset:%zu\n", p_popen_offset);
TRACE("p_pclose_offset:%zu\n", p_pclose_offset);
TRACE("p_read_offset:%zu\n", p_read_offset);
return inject_process64_run_cmd(
str_root_key,
target_pid,
target_process_libc_so_path.c_str(),
p_mmap_offset,
p_munmap_offset,
p_chdir_offset,
p_clearenv_offset,
p_setenv_offset,
p_execve_offset,
p_fileno_offset,
p_popen_offset,
p_pclose_offset,
p_read_offset,
cmd, out_err,
user_root_auth,
chdir_path,
clear_env,
set_env);
}
std::string safe_inject_process64_run_cmd_wrapper(
const char* str_root_key,
pid_t target_pid,
const char* cmd,
ssize_t & out_err,
bool user_root_auth/* = true*/,
const char* chdir_path/* = NULL*/,
bool clear_env/* = false*/,
std::vector<process64_env>* set_env /* = NULL*/) {
std::string cmd_exec_result;
if (target_pid <= 0) {
out_err = -250;
return {};
}
if (cmd == NULL || strlen(cmd) == 0) { return {}; }
fork_pipe_info finfo;
if(fork_pipe_child_process(finfo)) {
out_err = 0;
cmd_exec_result = inject_process64_run_cmd_wrapper(
str_root_key,
target_pid,
cmd,
out_err,
user_root_auth,
chdir_path,
clear_env,
set_env);
write_errcode_to_father(finfo, out_err);
write_string_to_father(finfo, cmd_exec_result);
_exit(0);
return {};
}
out_err = 0;
if(!wait_fork_child_process(finfo)) {
out_err = -258;
} else {
if(!read_errcode_from_child(finfo, out_err)) {
out_err = -259;
} else if(!read_string_from_child(finfo, cmd_exec_result)) {
out_err = -260;
}
}
return cmd_exec_result;
}
ssize_t inject_process_env64_PATH_wrapper(const char* str_root_key, int target_pid, const char* add_path) {
if (kernel_root::get_root(str_root_key) != 0) {
return -271;
}
/*
安卓:
/apex/com.android.runtime/lib64/bionic/libc.so
/apex/com.android.runtime/bin/linker64
Linux进程:
/system/lib64/libc.so
/system/bin/linker64
init进程
/system/lib64/bootstrap/libc.so
/system/lib64/bootstrap/linker64
*/
std::string target_process_libc_so_path = find_process_libc_so_path(target_pid);
if (target_process_libc_so_path.empty()) {
return -273;
}
TRACE("target_process_libc_so_path:%s\n", target_process_libc_so_path.c_str());
size_t p_mmap_offset;
size_t p_munmap_offset;
size_t p_getenv_offset;
size_t p_setenv_offset;
int ret = safe_load_libc64_modify_env_func_addr(
str_root_key,
target_process_libc_so_path.c_str(),
p_mmap_offset,
p_munmap_offset,
p_getenv_offset,
p_setenv_offset);
if (ret != 0) {
TRACE("safe_load_libc64_modify_env_func_addr error:%d\n", ret);
return ret;
}