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Android - SSL Pinning Bypass

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devwhatsapp

Hi

 

Can you guys help in bypassing ssl pinning in android app.

 

App - SnapChat

 

I have extracted apk and there were multi dex files. converted back to jar and got many ssl places. I am a noob so need help. I used bytecode viewer to see the code.

 

Please tell me you guys know how to do this and can help.

 

Thank you all.

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krypdon

can you elaborate a  little bit more so as to make clear what do we want to achieve. That way everyone will be on the same page.

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devwhatsapp

Hi

 

We want to intercept network communications between the app and its server.

 

Currently it has ssl pinning , so normal way of using xposed modules like ssl unpinning 2.0 or justtrustme dont work. It will require manual patching.

 

ref = hxxp://blog.dewhurstsecurity.com/2015/11/10/mobile-security-certificate-pining.html

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krypdon
2 minutes ago, devwhatsapp said:

Hi

 

We want to intercept network communications between the app and its server.

 

Currently it has ssl pinning , so normal way of using xposed modules like ssl unpinning 2.0 or justtrustme dont work. It will require manual patching.

 

ref = hxxp://blog.dewhurstsecurity.com/2015/11/10/mobile-security-certificate-pining.html

I'm don't know much about android applications but if i were you, I would use fiddler for this purpose. I'm just learning myself. I'm not really your guy in this regard. 

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devwhatsapp

Okay fiddler and all will try to work but because the ssl pinning is done inside the client fiddler will only go far as ssl connect 

 

 we need to edit the ssl pinning codes inside the dex file . I have theory knowledge , need someone who can execute it. 

 

@Jasi2169 can do it I believe.

 

 

  • Upvote 1

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krypdon
1 hour ago, devwhatsapp said:

@Jasi2169 can do it I believe.

Yeah! he has a solid knowledge of Android OS. He can do it, I suppose.

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krypdon
1 hour ago, devwhatsapp said:

 we need to edit the ssl pinning codes inside the dex file . I have theory knowledge , need someone who can execute it.

do you see public keys of server anywhere in the app? maybe you can simply replace them with fiddler's public keys.

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devwhatsapp
Spoiler

ByteArrayInputStream localByteArrayInputStream = new ByteArrayInputStream("-----BEGIN CERTIFICATE-----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\noJ2daZH9\n-----END 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CERTIFICATE-----\n-----BEGIN 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CERTIFICATE-----\n-----BEGIN CERTIFICATE-----\nMIIDZjCCAk6gAwIBAgIBATANBgkqhkiG9w0BAQUFADBEMQswCQYDVQQGEwJVUzEW\nMBQGA1UEChMNR2VvVHJ1c3QgSW5jLjEdMBsGA1UEAxMUR2VvVHJ1c3QgR2xvYmFs\nIENBIDIwHhcNMDQwMzA0MDUwMDAwWhcNMTkwMzA0MDUwMDAwWjBEMQswCQYDVQQG\nEwJVUzEWMBQGA1UEChMNR2VvVHJ1c3QgSW5jLjEdMBsGA1UEAxMUR2VvVHJ1c3Qg\nR2xvYmFsIENBIDIwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDvPE1A\nPRDfO1MA4Wf+lGAVPoWI8YkNkMgoI5kF6CsgncbzYEbYwbLVjDHZ3CB5JIG/NTL8\nY2nbsSpr7iFY8gjpeMtvy/wWUsiRxP89c96xPqfCfWbB9X5SJBri1WeR0IIQ13hL\nTytCOb1kLUCgsBDTOEhGiKEMuzozKmKY+wCdE1l/bztyqu6mD4b5BWHqZ38MN5aL\n5mkWRxHCJ1kDs6ZgwiFAVvqgx306E+PsV8ez1q6diYD3Aecs9pYrEw15LNnA5IZ7\nS4wMcoKK+xfNAGw6EzywhIdLFnopsk/bHdQL82Y3vdj2V7teJHq4PIu5+pIaGoSe\n2HSPqht/XvT+RSIhAgMBAAGjYzBhMA8GA1UdEwEB/wQFMAMBAf8wHQYDVR0OBBYE\nFHE4NvICMVNHK266ZUapEBVYIAUJMB8GA1UdIwQYMBaAFHE4NvICMVNHK266ZUap\nEBVYIAUJMA4GA1UdDwEB/wQEAwIBhjANBgkqhkiG9w0BAQUFAAOCAQEAA/e1K6td\nEPx7srJerJsOflN4WT5CBP51o62sgU7XAotexC3IUnbHLB/8gTKY0UvGkpMzNTEv\n/NgdRN3ggX+d6YvhZJFiCzkIjKx0nVnZellSlxG5FntvRdOW2TF9AjYPnDtuzywN\nA0ZF66D0f0hExghAzN4bcLUprbqLOzRldRtxIR0sFAqwlpW41uryZfspuk/qkZN0\nabby/+Ea0AzRdoXLiiW9l14sbxWZJue2Kf8i7MkCx1YAzUm5s2x7UwQa4qjJqhIF\nI8LO57sEAszAR6LkxCkvW0VXiVHuPOtSCP8HNR6fNWpHSlaY0VqFH4z1Ir+rzoPz\n4iIprn2DQKi6bA==\n-----END CERTIFICATE-----\n-----BEGIN 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CERTIFICATE-----\n-----BEGIN CERTIFICATE-----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\n3ItHuuG51WLQoqD0ZwV4KWMabwTW+MZMo5qxN7SN5ShLHZ4swrhovO0C7jE=\n-----END CERTIFICATE-----\n-----BEGIN CERTIFICATE-----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\nXZ3Krr0TKUQNJ1uo52icEvdYPy5yAlejj6EULg==\n-----END CERTIFICATE-----\n-----BEGIN CERTIFICATE-----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\njVaMaA==\n-----END CERTIFICATE-----\n-----BEGIN CERTIFICATE-----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\nXZ3Krr0TKUQNJ1uo52icEvdYPy5yAlejj6EULg==\n-----END CERTIFICATE-----\n-----BEGIN CERTIFICATE-----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\nW/POuZ6lcg5Ktz885hZo+L7tdEy8W9ViH0Pd\n-----END CERTIFICATE-----\n".getBytes("UTF-8"));
 

 

 

 

This is what I found , how can we read these certificates ? they are encoded in java ByteArrayInputStream

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devwhatsapp

Also if apk is edited to add android:debuggable:true in the manifes xml , the app loads , but does not allow sign in , so it has detection for that also

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krypdon
1 hour ago, devwhatsapp said:

This is what I found , how can we read these certificates ? they are encoded in java ByteArrayInputStream

that junk is just few certificates glued into one big block of junk.

copy all the stuff into sublime text and replace all the search for \n and then press enter key. You'll get actual certificates. just put each certificate into new file and rename it with extention .cer

here is an eg.

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

check the attachment. it's the same text but in a file with cer extention

cert1.cer

Edited by krypdon

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krypdon

i think you can replace replace them with fiddler's public certificates and see what happens. ssl pinning can be defeated by replacing server public key. in this case these certificates.

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devwhatsapp

Thanks on figuring out about the certificate format with /n added

 

Well thats unix formatting or something for new line right

 

now I willt try to add this into the apk and check.

 

Thank you for all this , will report back.

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krypdon
2 hours ago, devwhatsapp said:

Thanks on figuring out about the certificate format with /n added

 

Well thats unix formatting or something for new line right

 

now I willt try to add this into the apk and check.

 

Thank you for all this , will report back.

Hey! don't thank me for all this. In fact, your efforts made me learn about ssl pinning and how fiddler can be used for MITM attack.

We are learners. We help each other. Cheers !

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krypdon
2 hours ago, devwhatsapp said:

Well thats unix formatting or something for new line right

yes \n is new line in java and many other languages.

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devwhatsapp

I did the edit , recompiled the apk , signed , etc. but the app loads but does not login , it detects somethings changed. 

 

Even though it detects , the initial connection should have been intercepted , but it dint , its looked the same.

 

@Jasi2169  or someone with lot of experience can do this.

 

I have tried  , if anyother idea , I am ready to try.

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krypdon
5 minutes ago, devwhatsapp said:

I did the edit , recompiled the apk , signed , etc. but the app loads but does not login , it detects somethings changed. 

 

Even though it detects , the initial connection should have been intercepted , but it dint , its looked the same.

 

@Jasi2169  or someone with lot of experience can do this.

 

I have tried  , if anyother idea , I am ready to try.

I doubt it can detect it has changed. Unless it is running with root privileges.

Have you replaced original certificates with fiddler's public certificates? Are you using fiddler to intercept? I don't know java but from the looks of byte array stream you posted, there must be some code that will break them into individual certificates and check against server provided certificate. That is the whole idea of ssl pinning.  You should try to see what app does with these certificates.

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devwhatsapp

I have not replaced but added the fiddler certificate 

 

Below is the added code. /n is added at proper places.

 

Spoiler

-----BEGIN CERTIFICATE-----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\nrK1mLbpCFeDDIUNvUbRevhfY6bxzlSZ4z2sEeWGO5KDkgSbIg1A=\n-----END CERTIFICATE-----\n

 

 

Below is the original fiddler certificate.

 

Spoiler

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

 

 

Please check if I made a mistake above in placing the /n

 

I might have made mistakes in decompiling , compiling , signing etc,

 

If someone here who is very good at android can jump into this , it will help to correct where I went wrong.

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krypdon
9 hours ago, devwhatsapp said:

I have not replaced but added the fiddler certificate 

 

Below is the added code. /n is added at proper places.

 

Below is the original fiddler certificate.

 

Please check if I made a mistake above in placing the /n

 

I might have made mistakes in decompiling , compiling , signing etc,

 

If someone here who is very good at android can jump into this , it will help to correct where I went wrong.

Did you find solution to it?

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gillyjane

can you really sniff snapchat? I'm interested in it show me.

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devwhatsapp
On 6/18/2017 at 0:28 PM, krypdon said:

Did you find solution to it?

 

No

 

20 hours ago, gillyjane said:

can you really sniff snapchat? I'm interested in it show me.

 

We are trying

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gillyjane
28 minutes ago, devwhatsapp said:

We are trying

show me how you do it. a nice tutorial will be nice. :)

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krypdon
1 hour ago, devwhatsapp said:

No

I can't even signup this app. It gives me message that I can't create account this time. It just refuses to work on my phone. Must be detecting installed app and root.

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devwhatsapp
18 hours ago, krypdon said:

I can't even signup this app. It gives me message that I can't create account this time. It just refuses to work on my phone. Must be detecting installed app and root.

 

Yes google new thing called safetynet , use phh superuser and root  , also you can use magisk

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