| Título | PCMan FTP Server 2.0.7 Buffer Overflow |
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| Descrição | This technique works well against Windows XP Professional Service Pack 2 and 3.
For this exploit, I tried several strategies to increase the reliability of the Poc - Proof Of Concept.
Sending an excessive amount of data through the "RNTO" command, the application crashes, indicating the Buffer Overflow condition.
Then, the offset amount was identified by using msf-pattern_create -l 3000
And then by using msf-pattern_offset -q to discover the offset amount.
After discovering the offset amount, it was necessary to adjust the data in the stack.
To advance in the exploit , mona was used, together with the command !mona jmp -r esp -n to discover a JMP ESP address, in this case it was 0x74e32fd9.
Then I used the removal of the main badchars: 0x00\0x0a\0x0d I did not perform a search for badchars through bytearray, because I already knew the environment I was working in.
Finally, I added 20 nops and generated the shellcode with msfvenom
Successful exploitation of these issues could allow attackers to obtain a remote shell on the system. |
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| Fonte | ⚠️ https://fitoxs.com/exploit/exploit-0c70a8b6f3e2d1312bbfa8fcb8e44c802394c3adfb7c1f860a18e9fdc88d8e9c3.txt |
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| Utilizador | Fernando Mengali (UID 83791) |
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| Submissão | 17/04/2025 23h23 (há 12 meses) |
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| Moderação | 05/05/2025 13h56 (18 days later) |
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| Estado | Aceite |
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| Entrada VulDB | 307396 [PCMan FTP Server 2.0.7 RNTO Command Excesso de tampão] |
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| Pontos | 20 |
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