OllyDbg v2.00 Alpha 7

最新推荐文章于 2025-08-07 09:33:59 发布

linhanshi

最新推荐文章于 2025-08-07 09:33:59 发布

阅读量788

点赞数

分类专栏： Crack Tools 文章标签： command loops application string less each

Crack Tools 专栏收录该内容

1311 篇文章

订阅专栏

OllyDbg通过内部模拟简单指令（如选项、运行跟踪等），使运行和命中跟踪速度提高了15倍。在Athlon 4000+上，标准运行跟踪每秒可执行35000条指令；启用模拟后，OllyDbg可以跟踪500000条指令。此外，还优化了运行跟踪条件的解析，显著提升了效率。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

2008-05-24

Changelog

Internal emulation of simple commands (Options|Run trace|Allow fast command emulation) has made run and hit trace 15 (fifteen!) times faster. On my Athlon 4000+, standard run trace executes 35000 commands per second. With the emulation on, OllyDbg traces 500000 commands! For simple programs, this may be close to the real-time execution - in the step-by-step mode, with the full protocolling.Emulation covers only the small subset of 80x86 commands - moves, PUSH/POP, arithmetical and boolean operations, comparisons, shifts, jumps, calls, returns and LEAs. No multiplications, prefixes, loops or string operations, no FPU or MMX; still, OllyDbg passes to the application less than two percents of commands.Frequently one uses run trace together with the run trace condition, like: "stop trace when EAX==0x123456". Up to now, the inetrpreter parsed conditional expression on each step. However, this was too slow for the accelerated trace. Now I compile expressions to the simple pseudocode and use a very quick interpreter to estimate the condition. As a result, the above comparison is processed in only 130 nanoseconds. Not bad!Oh yes, and command help now includes the string commands, too.

Download

Standalone: http://www.ollydbg.de/odbg200g.zip