Designation of an iOS crash report without a dsym address - a character outside the addresses encountered in binary format

Question

I am trying to symbolize an iOS crash report for which I do not have a dsym file. I know that I can’t get a beautiful filename: a symbolic string of the number, but I’ll find out where the failure in the code assembly section will be good enough.

To begin, consider the stack trace of a broken stream:

Thread 3 name:  Dispatch queue: com.unity3d.WebOperationQueue :: NSOperation 0x1483250e0 (QOS: USER_INTERACTIVE)
Thread 3 Crashed:
0   myapp                       0x0000000100ec4738 0x100080000 + 14960440
1   myapp                       0x000000010120e0fc 0x100080000 + 18407676
2   myapp                       0x00000001011d7e00 0x100080000 + 18185728
3   myapp                       0x0000000100085cfc 0x100080000 + 23804
4   CFNetwork                   0x0000000185027780 __65-[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:]_block_invoke + 80
...

I have a decrypted binary and verified uuid from crash report and binary matches. To manually indicate the address of the stack, I do this

atos -arch arm64 -o myapp -l 0x100080000 0x0000000100ec4738

and I get the output from the above command as

0x0000000100e44738 (in myapp) + 544

This is partially expected because I do not have a dsym file.

Please note that 0x0000000100e44738you can also get if you calculate

symbol address as = (slide + stack - load address)

slide 0x0000000100000000(found as vmaddr from otool -arch arm64 -l myapp | grep -B 3 -A 8 -m 2 "__TEXT")

so 0x0000000100000000 + 0x0000000100ec4738 - 0x100080000 = 0x100e44738 , , , atos.

, 0x100e44738 TEXT , , otool

otool -tvV myapp

.

myapp:
(__TEXT,__text) section
__ZNK5physx14NpSceneQueries10multiQueryINS_12PxRaycastHitEEEbRKNS_15MultiQueryInputERNS_13PxHitCallbackIT_EENS_7PxFlagsINS_9PxHitFlag4EnumEtEEPKNS_12PxQueryCacheERKNS_17PxQueryFilterDataEPNS_21PxQueryFilterCallbackEPNS_20BatchQueryFilterDataE:
0000000101262f40    stp x28, x27, [sp, #-96]!
0000000101262f44    stp x26, x25, [sp, #16]
0000000101262f48    stp x24, x23, [sp, #32]
0000000101262f4c    stp x22, x21, [sp, #48]
0000000101262f50    stp x20, x19, [sp, #64]
0000000101262f54    stp x29, x30, [sp, #80]
...

, otool -tvV (0x101262f40) , symbol address (0x100e44738). , , .

SIGSEGV, , - . SIGABRT, , .

.

Answer 1

NSURLConnection. , , dealloc (NSURLConnection - , ). , NSURLConnection , . viewController, , , .