Most probably it is an encrypted wallet, as you said "the private key looks like: long string /short string A==", Hence recovery of bitcoin is only possible with a password. If you don't remember that then try to remember, you can brute force the password if you remember some part of it. that is all what can you do. Don't forget to search your PC or Home for the recovery backup phrase as with that you can easily get access to your bitcoins.

Claiming BTG from Blockchain.info wallet is not simple as it was for Bitcoin Cash still, I can suggest you a simple but a bit lengthy method for it.

Download - https://iancoleman.github.io/bip39/

Go to your Blockchain.info wallet and get you Recovery Backup Phrase from there. Now put that 12 words Phrase into BIP39 Mnemonic.

Now, you can check the Bitcoin addresses with their private keys and copy all you need. In case you don't find then probably you are not using the default account of the blockchain, go to settings --> Address check how many accounts you have there and change the account's field to 1 or 2 or 3 depending upon the list. Always Start counting from 0 as default account is referred as 0.

After that Download a wallet that supports BTG and Import the private keys of addresses which had the balance at the time of fork. That's it
Now you can transfer BTG to an exchange and sell them for Bitcoins  

oh well, that is quite simple but Lengthy process as well.

Download - https://iancoleman.github.io/bip39/

Go to your Blockchain.info wallet and get you Recovery Backup Phrase from there. Now put that 12 words Phrase into BIP39 Mnemonic.

Now, you can check the Bitcoin addresses with their private keys and copy one of them you need. In case you don't find then probably you are not using the default account of the blockchain, go to settings --> Address check how many accounts you have there and change the account's field to 1 or 2 or 3 depending upon the list. Always Start counting from 0 as default account is referred as 0.

After that go to http://brainwalletx.github.io/#sign put your private key there and type your message to sign the bitcoin address. I know it is hosted on github.io still I would not recommend to use it. Better you download a copy from https://github.com/brainwalletX/brainwalletX.github.io and use it offline as it will be much safer for you.

I'm also Interested. Let me how we can do this and can we use escrow
thanks.

You can easily get rid of this problem, but after applying this to your blockchain wallet you won't able to recover your bitcoins using their Backup Phrase.

How to Do it?
1. Generate a bitcoin Private key. Use Brainwallet.org to do that as it's the best site to do that.
2. Copy the private key and go to your blockchain wallet.
3. Setting --> Addresses --> Import Address.
4. Paste your bitcoin private key there and you are done.

You can use that address for receiving and sending funds out of wallet without a change in your bitcoin address.

Yobit is the best site for that, as you can get all the shit coins there. I don't know much about their reviews please do your own search on it before using that site. Although I never had a problem with their exchange in past I'm not using it from a quite long time.

Looks like I'm not eligible for this as it is over 10 Hours now and I haven't received any reply regarding PM sent to you for this trade
or If Trade is already completed then please lock this thread.
thanks

Yes, it is hackable but for that person who is able to download the full list from directory.io and search for addresses in that list. Although, it is not yet feasible to download as it requires such a huge database that no one can have on this Earth. It means bitcoin is unhackable for a human at least, keeping aliens out of this as we don't know their limits.

Yupp
I need it this time.
thanks

Do you have BTC then I can do that for you, PayPal is not what I like to accept from you(Newbie)
Let me know if you even have even very less amount of BTC then also I can do it for you.

Get it from a bank they will not call you scammer or you can also ask help from your friends and buy bitcoins from that and return them 10% extra after a month. Why you need it from us because we can't force you to pay back but they know you and force you to payback in case of default. Right?

Lol,
I seriously got scared(Isn't the account get hacked and I sent payment to a hacker)

No, problem sent extra after seeing your Message here.
You can check now and confirm. The address will be PMed to you.
thanks

User 'The Pharmacist' has blocked your personal message.
Transaction ID
2SB739979W409433M
I'm not aware of the fee of PayPal hence, Let me know if it is less, will send more

Hi, I can do that let me know if still needed.
thanks

Better you sign a new message from that address to make clear you are the same person who made that request two months ago. Also Include profile link and the link where we can see the address posted by you.

Please read that thread again "Recovering hacked accounts or accounts with lost passwords" and understand what is required and try not skip even a single detail that is asked by them.

For that, you must have access to your private key. If you already have that key then you can easily sign the message using https://www.myetherwallet.com/signmsg.html
If you don't have the private key or have an account on an exchange than it's not possible for you to sign the message. Therefore, you can't recover your account.

Bitcoin address will be this - 1May3TVRzjg2cYut5Pn1uJzKFWk9MjyHNH and you can send any amount above than 0.0005 BTC with minimum fee(Must be above 5 Satoshi /byte ) and ask me to send ETH after that according to the current market rate.

If you want me to split that into two addresses than that is also possible you can tell me both the address here in this thread or PM after that so, you won't have a problem.

If you have even Dust amount of bitcoins then you can send them to me and will send the same amount of ether to your address. I know you have some token which have some value but seriously your account won't worth even that. Please let me know

First - How old the ethereum address is? If it is enough old than, yes it can be used to recover your account. There are cases when Cyrus helped members to recover their accounts with an ethereum address.

Please sign a message with the ethereum address, rest of the procedure will be same as described with bitcoin as an example.

Update - Address posted 18 June 2017, around 4 months old. Could be used to Verify Ownership.
https://bitcointalk.org/index.php?topic=1830895.msg19632469#msg19632469