solved new crackme
This commit is contained in:
parent
b0660021d3
commit
96997d019d
BIN
blacksabbath#1/129727589-2683725810.lic
Normal file
BIN
blacksabbath#1/129727589-2683725810.lic
Normal file
Binary file not shown.
BIN
blacksabbath#1/blacksabbath#1.exe
Normal file
BIN
blacksabbath#1/blacksabbath#1.exe
Normal file
Binary file not shown.
BIN
blacksabbath#1/blacksabbath#1_dump_.exe
Normal file
BIN
blacksabbath#1/blacksabbath#1_dump_.exe
Normal file
Binary file not shown.
42
blacksabbath#1/solve.md
Normal file
42
blacksabbath#1/solve.md
Normal file
@ -0,0 +1,42 @@
|
||||
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
|
||||
|
||||
|
||||
|
||||
这里决定的密钥文件的内容为:`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
|
Loading…
Reference in New Issue
Block a user