CODEWITHSUNDEEP
windowsassemblyx86disassembly
Thomas
Thomas

Reputation: 6196

Several int3 in a row

I'm using x64dbg to inspect the disassembly of a .DLL.

At several points in the assembly I see several Int3 instructions in a row.

00007FFA24BF1638 | CC                       | int3                                    |
00007FFA24BF1639 | CC                       | int3                                    |
00007FFA24BF163A | CC                       | int3                                    |
00007FFA24BF163B | CC                       | int3                                    |
00007FFA24BF163C | CC                       | int3                                    |
00007FFA24BF163D | CC                       | int3                                    |
00007FFA24BF163E | CC                       | int3                                    |
00007FFA24BF163F | CC                       | int3                                    |

This instruction is used for debugging / break points right? So then why are there so many in a row, and why is there any at all considering this DLL was compiled with a release configuration VC++.

Upvotes: 2

Views: 859

Answers (1)

Jester
Jester

Reputation: 58802

It's probably just padding, they won't ever be executed. I assume the next function begins at 00007FFA24BF1640 which is 16 byte aligned, and the preceding function presumably ends before these instructions.

Upvotes: 9

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