# \[HELP NEEDED\] Dehashing SHA-1

**URL:** <https://onehack.st/t/help-needed-dehashing-sha-1/91963>\
**Category:** Discussion & Solutions\
**Tags:** solved\
**Created:** [June 14, 2020, 12:45pm UTC](https://onehack.st/t/help-needed-dehashing-sha-1/91963 "2020-06-14T12:45:03Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![suraj\_bahadur](https://onehack.st/user_avatar/onehack.st/suraj_bahadur/32/20309_2.png) [@suraj\_bahadur](https://onehack.st/u/suraj_bahadur)\
**Post date:** [June 14, 2020, 12:45pm UTC](https://onehack.st/t/help-needed-dehashing-sha-1/91963/1 "2020-06-14T12:45:03Z")

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I have started cracking account, I learned this thanks to onehack community, All my combos generated are in hashed format like SHA-1 and i cannot dehash them using any tool. Help is needed

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**Author:** ![XEN](https://onehack.st/user_avatar/onehack.st/xen/32/47131_2.png) [@XEN](https://onehack.st/u/XEN)\
**Post date:** [September 20, 2020, 8:30pm UTC](https://onehack.st/t/help-needed-dehashing-sha-1/91963/2 "2020-09-20T20:30:30Z")

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`SHA1` is a cryptographic hash function, so the intention of the design was to avoid what you are trying to do.

However, breaking a `SHA1` hash is technically possible. You can do so by just trying to guess what was hashed. This brute-force approach is of course not efficient, but that’s pretty much the only way.

So to answer your question: yes, it is possible, but you need significant computing power. Some researchers estimate that [it costs $70k - $120k].

As far as we can tell today, there is also no other way but to guess the hashed input.