HTTP C2 URI lowercased, messing up proxy password

[akmalhisyam]

Password became lowercased, causing authentication to fail

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Generate
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sliver > generate --http http://192.168.10.10/?proxy=http://098789:HehEhEyyyYyy@192.168.38.1:8080 --debug --name test002-linux --os linux

[*] Generating new linux/amd64 implant binary
[*] Build completed in 44s
[*] Implant saved to /root/test002-linux

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Run implant
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[user@pc ~]$ ./test002-linux
2023/03/02 21:44:51 sliver.go:87: Hello my name is test002-linux
2023/03/02 21:44:51 limits.go:58: Limit checks completed
2023/03/02 21:44:51 sliver.go:105: Running in session mode
2023/03/02 21:44:51 session.go:67: Starting interactive session connection loop ...
2023/03/02 21:44:51 transports.go:41: Starting c2 url generator () ...
2023/03/02 21:44:51 transports.go:95: Return generator: (chan *url.URL)(0xc0000287e0)
2023/03/02 21:44:51 transports.go:83: Yield c2 uri = 'http://192.168.10.10?proxy=http://098789:heheheyyyyyy@192.168.38.1:8080'
2023/03/02 21:44:51 transports.go:83: Yield c2 uri = 'http://192.168.10.10?proxy=http://098789:heheheyyyyyy@192.168.38.1:8080'
2023/03/02 21:44:51 session.go:84: Next CC = http://192.168.10.10?proxy=http://098789:heheheyyyyyy@192.168.38.1:8080
2023/03/02 21:44:51 session.go:84: Next CC = http://192.168.10.10?proxy=http://098789:heheheyyyyyy@192.168.38.1:8080
2023/03/02 21:44:51 transports.go:83: Yield c2 uri = 'http://192.168.10.10?proxy=http://098789:heheheyyyyyy@192.168.38.1:8080'
2023/03/02 21:44:51 session.go:172: Connecting -> http(s)://192.168.10.10
2023/03/02 21:44:51 gohttp.go:97: Force proxy "http://098789:heheheyyyyyy@192.168.38.1:8080"
2023/03/02 21:44:51 gohttp.go:107: Proxy URL = 'http://098789:heheheyyyyyy@192.168.38.1:8080'
2023/03/02 21:44:51 httpclient.go:672: [http] segments = [], filename = sign-up, ext = php
2023/03/02 21:44:51 crypto.go:189: TOTP Code (2023-03-02 13:44:51.694866088 +0000 UTC): 72621053
2023/03/02 21:44:51 httpclient.go:339: [http] POST -> https://192.168.10.10/sign-up.html?cn=7l2621053&m=18h740664 (106 bytes)

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"Proxy"
======================

[user@pc ~]$ sudo nc -lvp 8080
Listening on 0.0.0.0 8080
Connection received on hehe 57280
CONNECT 192.168.10.10:443 HTTP/1.1
Host: 192.168.10.10:443
User-Agent: Go-http-client/1.1
Proxy-Authorization: Basic MDk4Nzg5OmhlaGVoZXl5eXl5eQ==

[user@pc ~]$ echo MDk4Nzg5OmhlaGVoZXl5eXl5eQ== | base64 -d
098789:heheheyyyyyy