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I lost a flag inside this binary, please help me to find it. If you trigger certain anti-debugging techniques, you might get false flags…. flag format: FLAG-(str) https://mega.nz/#!ifgzQQCC!E1W0cSOFRvi7bE_v419rzwQB2jAHF0IsIRAWL6H1RNE
First 10 Solvers
| Rank | Username |
|---|---|
| 1 | vidar |
| 2 | blakeks4711 |
| 3 | kronos |
| 4 | voidmercy |
| 5 | Yeraisci |
| Rank | Username |
|---|---|
| 6 | getbackmazafaka |
| 7 | lunatic |
| 8 | slowr |
| 9 | lonelyboyz |
| 10 | kerrodali |
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You are very close !!! I passed the same way as you. You have the condition of "(rdp-34h), 4?" and as you know you need to pass 4 arguments. Now try to see in IDA where the flow goes if you passed 4 arguments. You will be see 4 if conditions that will helps you to generate 4 equation with 4 variable and by that you will find the correct arguments.
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Ichild
flag format: FLAG-something, with no brackets. I was misled, founded two other false flags after I had found the right flag.
IT_Oracle
Whew, I confused myself a lot on that one hahahaha. Thanks for the super fun challenge, it taught be a ton of new things!
sharkmagic07
hard!
mavleop
I liked the challenge, was annoying that I I had to have a specific version of openssl installed. Was quicker just to manually recover.
domin568
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mavleop
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Rivit
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EdbR
Excellent ctf !!!
sheng855174
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EdbR
Look on disassembler you will find some conditions that will help you find the correct parameters. And the parameters are not in md5.
sheng855174
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EdbR
You are very close !!! I passed the same way as you. You have the condition of "(rdp-34h), 4?" and as you know you need to pass 4 arguments. Now try to see in IDA where the flow goes if you passed 4 arguments. You will be see 4 if conditions that will helps you to generate 4 equation with 4 variable and by that you will find the correct arguments.
sheng855174
I succeed!!! I am freshman, interested in information security. Thank you!
EdbR
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b4el7d
Hello I had found another fake flag easy_f14g and using the if condition compose of 4 strtol and 4 equation i had found 4 value : 248.84050000000002 112.77770000000001 200.6176 309.4615
but its so wrong. Can u help me to understand the method? TY
EdbR
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b4el7d
i cant read your comment
b4el7d
SOLVED wrong linear equation. Ty for support!
EdbR
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