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NAME rasign2 -- radare2 signature management tool SYNOPSIS rasign2 [-afjhqrvSm] [-A [AAA]] [-i script.r2] [-o sigs.sdb] [-s signspace] [-c] [file] DESCRIPTION Generates, dumps, and manages zignature scripts for function identification and cataloging. Zignatures are Radare2 scripts that capture metadata asso- ciated with function signatures. Supports interpretation of FLIRT '.sig' files, execution of zignature scripts, and exporting signatures in various formats. OPTIONS -a Make signatures from all .o files in the provided .a file -A [AAA] Same as r2 -A, the more 'A's the more analysis is performed -f Interpret the file as a FLIRT .sig file and dump signatures -h Show help menu -j Show signatures in json -i script.r2 Execute this script in the r2 instance -o sigs.sdb Add signatures to file, create if it does not exist -q Quiet mode -r Show output in radare commands -S Perform operation on sdb signature file ('-o -' to save to same file) -s signspace Save all signatures under this signspace -c Add collision signatures before writing file -v Show version information -m Merge/overwrite signatures with same name ENVIRONMENT rasign2 does not use any environment variables. EXAMPLES Generate signatures from a library file: $ rasign2 -o libc.sdb libc.so.6 Perform deep analysis before generating signatures: $ rasign2 -AA -o enhanced_libc.sdb libc.so.6 Output signatures in JSON format: $ rasign2 -j input_file Show signatures as radare2 commands: $ rasign2 -r input_file Merge new signatures into an existing file: $ rasign2 -m -o existing.sdb new_binary Extract signatures from a FLIRT .sig file: $ rasign2 -f flirt_signatures.sig THE Z COMMAND IN RADARE2 The 'z' command in radare2 is dedicated to the management of binary signa- tures, known as zignatures. Here are the key subcommands: z Show zignatures z. Find matching zignatures in current offset zb Search for best match zd Diff current function and signature z* Show zignatures in radare format zo Manage zignature files zf Manage FLIRT signatures z/ Search zignatures zc Compare current zignspace zignatures zs Manage zignspaces zi Show zignatures matching information These commands facilitate a robust workflow for binary analysis, enabling the identification of known functions and comparing binary similarities. SUPPORTED ZIGNATURE METRICS Zignatures in radare2 can be created with various metrics: a Bytes pattern (masked) b Raw bytes pattern c Base64 comment n Real function name g Graph metrics (complexity, edges, basic blocks) o Original offset r References x Cross references h Basic block hashes v Variables and arguments SEE ALSO radare2(1) AUTHORS pancake <pancake@nopcode.org> Jul 10, 2025 RASIGN2(1)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | ENVIRONMENT | EXAMPLES | THE Z COMMAND IN RADARE2 | SUPPORTED ZIGNATURE METRICS | SEE ALSO | AUTHORS
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