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Results tagged with ida
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user 26204
Interactive Disassembler Professional (formerly IDA Pro), a proprietary multi-platform disassembler by Hex-Rays.
6
votes
1
answer
2k
views
Reversing an RSA function throws pkcs decoding error
I'm working my way through reversing a toy challenge, and I find myself stuck. The app is pretty simple, it spits out a blob of text (e.g. "3b880a90e476d66569d9d5dfb5cd755af3f..."). Dumping the code, …
- 215
5
votes
3
answers
1k
views
Nested Structures in IDA
I'm trying to figure out how to explore structs in IDA, and getting stuck on the basics. … kBits = 1024;
const int kExp = 3;
RSA *rsa = RSA_generate_key(kBits, kExp, 0, 0);
RSA_print_fp(stdout, rsa, 0);
RSA_free(rsa);
return 0;
}
Then I imported the OpenSSL headers, so IDA …
- 215
4
votes
2
answers
165
views
Reversing rodata
I'm playing with an ELF binary to learn IDA, and I'm not sure how to interpret what I'm seeing.. …
- 215
2
votes
1
answer
110
views
IDA mov dword ptr with non-existent addresses
I opened a random .so library to poke around and learn IDA a bit better, and I hit something I've never seen. … IDA has these instructions:
mov eax, [esp+4Ch+ptr]
mov dword ptr [eax], 665F6165h
mov dword ptr [eax+4], 6C615F66h
mov dword ptr [eax+8], 3A776F6Ch
mov dword ptr [eax+0Ch], 61736964h …
- 215
2
votes
0
answers
88
views
Tracing odd variant of call analysis failed
Weirdly that same call happens multiple times before the line causing the error, and it seems IDA is ok with those invokes. … text:00033AFA mov dword ptr [esp], 3
.text:00033B01 call log_dispatch
.text:00033B06 jmp loc_339EC
Seems obvious it's doing some logging, and IDA …
- 215
1
vote
0
answers
930
views
IDA 7 handling strings in debugger pseudocode
When running a remote debugger to a linux server, is there a way to get IDA (7.0) to properly handle strings? … When I go to the pseudocode view, I get things like this;
v7 = sub_804AD60((std::string *)&v16);
char *v5;
So clearly IDA has some handling of string types, and it's able to infer that one of these …
- 215
1
vote
Accepted
Reversing an RSA function throws pkcs decoding error
Turns out if you're gonna get hex strings printed to console, you have to convert them back to a binary char array before decrypting..
- 215