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[原创]分析IDA の "消失"的导出Jni静态函数
发表于: 2021-5-11 01:07 11492

[原创]分析IDA の "消失"的导出Jni静态函数

2021-5-11 01:07
11492

案例:某小说APP
参数:sign
作者:Lunction
时间:2021年5月10日


1、Findcrypt3 插件识别常见的加密算法(准确度仅供参考)

2、推荐龙哥的强大的FRIDA识别Hash脚本插件 地址:https://github.com/Pr0214/findhash

3、IDA按 G 跳转到_ZN22MessageDigestAlgorithm4initEPKhj

4、最终的结果都是指向这里



POST /api/v1/login/index HTTP/1.1
net-env: 1
channel: qm-huawei65_lf
is-white: 0
platform: android
app-version: 51115
reg:
AUTHORIZATION:
qm-params: cLGZ4CG-uloLp3U1paHWHT9wgI9wgI9wthfLpqfQAIo5gaUzpzpztqpzpzp5Nh-Y4zHY43HjHSRUmqF5A5HwgI9wgI9wgaMMAI4wth4E4T-QgI9wgaMwgI9wNI9MpTHL4qf5taG-pCp14lfQmqF5A5HLgIHngIfwAhHnNI4eghozgh-Y4TR5pT0wphOMgyFrghFwAIG2pqHMNe0lpTuTgI0MgefUgI0YNeFEAIFlgLHjHzUx4LHWHT0wA-4nA-4LATKUA-pyATKlH5w5OE2etCp2O5HWHTK7g3rwH5w5u_GUOEk2paU1paHWH-kUg0kFFERsR-kMqoZE3zkluooTufuFchpYulQekMQamC2zmlxYN0UqgMdMRfuIqCRzk0RY3o1H3eFMc5JDOR-rcqJxRUsROCOluCpaR0JWtlN_BMGmRCO5taG1BqR1HTZ5gefrgIglgIKwgh0wNh4MH5w5BqJ-pqw5A5GshUNFHyJ7H_kxmqU2B5HjHSuj45U1BqR1HTZ5gefrgIglgIKwgh0wNh4MH5w5uln5tCR1paHWHTgUAI9eNT9rgI0ngIflNaHjHzNjmqR7uaU1paHWHzflpIgwNI9lgzR5ghfUNqH5taG5Ozo7paHWH-o7p_GDmqF5taGD4q2-HTZ5HSM=
sign: 786226e3e984253bcf6d14a0cc4f3475
QM-it: 1620580746
QM-ii: 1969128767
no-permiss: 0
User-Agent: webviewversion/51115
Content-Type: application/x-www-form-urlencoded
Content-Length: 124
Connection: Keep-Alive
Accept-Encoding: gzip
 
cancell_check=1&encrypt_phone=ghgrgI9ngeKwgI9=&gender=2&open_push=1&type=1&verify=1111&sign=5288f921bd48c316222ec51305b3f628
POST /api/v1/login/index HTTP/1.1
net-env: 1
channel: qm-huawei65_lf
is-white: 0
platform: android
app-version: 51115
reg:
AUTHORIZATION:
qm-params: cLGZ4CG-uloLp3U1paHWHT9wgI9wgI9wthfLpqfQAIo5gaUzpzpztqpzpzp5Nh-Y4zHY43HjHSRUmqF5A5HwgI9wgI9wgaMMAI4wth4E4T-QgI9wgaMwgI9wNI9MpTHL4qf5taG-pCp14lfQmqF5A5HLgIHngIfwAhHnNI4eghozgh-Y4TR5pT0wphOMgyFrghFwAIG2pqHMNe0lpTuTgI0MgefUgI0YNeFEAIFlgLHjHzUx4LHWHT0wA-4nA-4LATKUA-pyATKlH5w5OE2etCp2O5HWHTK7g3rwH5w5u_GUOEk2paU1paHWH-kUg0kFFERsR-kMqoZE3zkluooTufuFchpYulQekMQamC2zmlxYN0UqgMdMRfuIqCRzk0RY3o1H3eFMc5JDOR-rcqJxRUsROCOluCpaR0JWtlN_BMGmRCO5taG1BqR1HTZ5gefrgIglgIKwgh0wNh4MH5w5BqJ-pqw5A5GshUNFHyJ7H_kxmqU2B5HjHSuj45U1BqR1HTZ5gefrgIglgIKwgh0wNh4MH5w5uln5tCR1paHWHTgUAI9eNT9rgI0ngIflNaHjHzNjmqR7uaU1paHWHzflpIgwNI9lgzR5ghfUNqH5taG5Ozo7paHWH-o7p_GDmqF5taGD4q2-HTZ5HSM=
sign: 786226e3e984253bcf6d14a0cc4f3475
QM-it: 1620580746
QM-ii: 1969128767
no-permiss: 0
User-Agent: webviewversion/51115
Content-Type: application/x-www-form-urlencoded
Content-Length: 124
Connection: Keep-Alive

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最后于 2021-5-11 01:28 被Lunction编辑 ,原因:
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一句话,龙哥威武
2021-5-11 16:32
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对呀 导出表为啥没有呢? 动态注册?
2021-5-11 19:09
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F:\360MoveData\Users\Administrator\Desktop\IDA_Pro_v7.0_Portable\plugins\findhash.py: invalid syntax (F:/360MoveData/Users/Administrator/Desktop/IDA_Pro_v7.0_Portable/plugins/findhash.py, line 106)
Traceback (most recent call last):
  File "F:\360MoveData\Users\Administrator\Desktop\IDA_Pro_v7.0_Portable\python\ida_idaapi.py", line 553, in IDAPython_ExecScript
    execfile(script, g)
  File "F:/360MoveData/Users/Administrator/Desktop/IDA_Pro_v7.0_Portable/plugins/findhash.py", line 106
    value["describe"] = f"函数{value['funcName']}疑似哈希函数主体,包含初始化常数以及运算部分。"
                                                                                                                        ^
SyntaxError: invalid syntax
findHash安装出错
2021-5-15 16:07
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py脚本里的那个f是啥意思呀 有他就报错
2021-5-15 16:20
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万里星河 py脚本里的那个f是啥意思呀 有他就报错
不支持7.0 还有推荐使用52破解的IDA7.5绿化版 
2021-5-16 01:07
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Mark一下
2021-6-26 11:20
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龙哥yyds!
2021-6-29 15:57
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我见过 不调用registerNatives得动态注册,老阴了!
2021-7-1 16:56
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Mark一下

最后于 2021-7-4 15:06 被燕幕自安编辑 ,原因:
2021-7-4 15:04
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