Reverse/blacksabbath#1/solve.md
2024-10-09 22:54:55 +08:00

42 lines
1.1 KiB
Markdown
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

打包工具: UPX[modified]
感觉又不像是upx
脱壳:
在这里设置断点
```
004129C3 | 68 C87D4000 | push blacksabbath#1.407DC8 |
```
F7两下就到OEP了
剩下重复的工作就不提了
程序检查序列号文件,错误或不存在就会直接退出
先公布一下答案:
密钥文件文件名是根据系统目录的写入时间进行生成的,我也懒得看具体实现了,直接断点断在
```
00407EBA | 8D05 98A74000 | lea eax,dword ptr ds:[40A798] |
```
这行然后看实际eax值就行了
密钥文件的内容:`00 00 06 66 00 00 02 9A`
```
00407F95 | 813D B0A84000 00000 | cmp dword ptr ds:[40A8B0],66060000 |
00407F9F | 75 15 | jne blacksabbath#1_dump_.407FB6 |
00407FA1 | 833D 98924000 08 | cmp dword ptr ds:[409298],8 |
00407FA8 | 75 0C | jne blacksabbath#1_dump_.407FB6 |
00407FAA | 813D B4A84000 00000 | cmp dword ptr ds:[40A8B4],9A020000 |
00407FB4 | 74 18 | je blacksabbath#1_dump_.407FCE |
```
最后在程序同目录下建立对应密钥文件即可