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Reverse engineer challenge3.exe on the target mach...

Créé le : 25 août 2026

Répondu en utilisant GPT-5.6 Thinking par Chat01

Question

challenge3.exe

Reverse engineer challenge3.exe on the target machine with the IP address 172.25.65.103 and identify the standard algorithm implemented by the membership validation function.(Answer Format: Xxxx Xxxxxxxxx)
it a typical ctf we have to find the answer

Réflexion

Inspected binary strings, cross-references, and Luhn validation assembly

Worked for 1m 21s

Réponse

Luhn Algorithm

Question

for the same exe Analyze the fiile challenge3.exe and determine the hexadecimal value used as the divisor in its final checksum validation on the machine with the IP address 172.25.65.103.(Answer Format: NxNX)

Réflexion

Inspected executable metadata, unpacked strings, and traced Luhn validation logic

Worked for 22s

Réponse

0x0A

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