create readable hex dump of a bitcoin, litecoin, etc wallet.dat

dumpwallet.py

from bsddb.db import *
import sys
import struct

# by Willem Hengeveld <itsme@xs4all.nl>
# usage:  python dumpwallet  path_to_your/wallet.dat
# note: you need to have the bsddb package installed

def getcompact(k, i):
    b= ord(k[i]) ; i+=1
    if b<0xfd:
        pass
    elif b==0xfd:
        b= struct.unpack("<h", k[i:i+2])[0] ; i+=2
    elif b==0xfe:
        b= struct.unpack("<l", k[i:i+4])[0] ; i+=4
    elif b==0xff:
        b= struct.unpack("<q", k[i:i+8])[0] ; i+=8
    return (b, i)
        
def decodekey(k):
    i=0
    key=[]

    (l,i)=getcompact(k,i)
    key.append(k[i:i+l]) ; i += l
    if key[0] in ['tx', 'pool', 'version', 'minversion']:
        key.append(k[i:])
    elif i<len(k):
        (l,i)=getcompact(k,i)
        key.append(k[i:i+l]) ; i += l
    return key


def decodevalue(k):
    i=0
    key=[]

    while i<len(k):
        (l,i)=getcompact(k,i)
        key.append(k[i:i+l]) ; i += l

    return key

# bestblock -> int32, byte, blockhash[len]
# key -> asn1:[01, privkey, =0:[01, [secp256k1, p], [a,b], g,  n, 01], =1:pubkey]
def decodekv(k,v):
    key=decodekey(k)
    if key[0] in ['name']:
        return "'%s':%s -> %s" % (key[0], key[1],  ",".join(map(lambda x:"'%s'"%x, decodevalue(v))))
    elif key[0] in ['key', 'ckey', 'defaultkey']:
        return "'%s':%s -> %s" % (key[0], ",".join(map(lambda x:x.encode("hex"), key[1:])),  ",".join(map(lambda x:x.encode("hex"), decodevalue(v))))
    elif key[0] in ['setting']:
        return "'%s':%s -> %s" % (key[0], key[1],  ",".join(map(lambda x:x.encode("hex"), decodevalue(v))))
    else:
        return "'%s':%s -> %s" % (key[0], ",".join(map(lambda x:x.encode("hex"), key[1:])),  v.encode("hex"))

db = DB()
r= db.open(sys.argv[1], "main", DB_BTREE, DB_RDONLY)

for (k,v) in db.items():
    print decodekv(k,v)