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https://github.com/F8LEFT/SoFixer
https://github.com/F8LEFT/SoFixer
Last synced: 13 days ago
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- Host: GitHub
- URL: https://github.com/F8LEFT/SoFixer
- Owner: F8LEFT
- License: bsd-3-clause
- Created: 2017-06-05T09:25:26.000Z (over 7 years ago)
- Default Branch: master
- Last Pushed: 2021-05-07T07:56:37.000Z (over 3 years ago)
- Last Synced: 2024-07-31T14:07:42.025Z (3 months ago)
- Language: C
- Size: 120 KB
- Stars: 701
- Watchers: 18
- Forks: 236
- Open Issues: 5
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# SoFixer
用于修复从内存中 dump 下来的So文件。
## Build
```shell
mkdir build
# 参数 -DSO_64=ON 用于修复64位so文件，不添加则为修复32位so文件
cmake -DSO_64=ON ..
make
```
## 使用方法
* 從so中dump內存， ida腳本
```$cpp
import idaapi
start_address = 0x0000007DB078B000
end_address = 0x0000007DB08DE000
data_length = end_address - start_address
fp = open('E:\path.so', 'wb')
cur = 0
towrite = 0x100000
while cur < data_length:
if data_length - cur < 0x100000:
towrite = data_length - cur
data = idaapi.dbg_read_memory(start_address + cur, towrite)
fp.write(data)
cur = cur + towrite
fp.close()
```
* 执行修复
```$cpp
sofixer -s soruce.so -o fix.so -m 0x0 -d
-s 待修復的so路徑
-o 修復後的so路徑
-m 內存dump的基地址(16位) 0xABC
-d 輸出debug信息
```
## 原理
原理参考下面的文章
TK so修复参考[http://bbs.pediy.com/thread-191649.htm]
* 修复shdr
* 修复phdr
* 修复重定位
## 已知问题
在解析重定位表的时候有几个地方写错了，暂时懒得改，估计够用了，等出现新的修复so的
理论的时候再一并更新吧